cache/tests/cache_test.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * PHPunit tests for the cache API
  19  *
  20  * This file is part of Moodle's cache API, affectionately called MUC.
  21  * It contains the components that are requried in order to use caching.
  22  *
  23  * @package    core
  24  * @category   cache
  25  * @copyright  2012 Sam Hemelryk
  26  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  27  */
  28
  29 defined('MOODLE_INTERNAL') || die();
  30
  31 // Include the necessary evils.
  32 global $CFG;
  33 require_once($CFG->dirroot.'/cache/locallib.php');
  34 require_once($CFG->dirroot.'/cache/tests/fixtures/lib.php');
  35
  36 /**
  37  * PHPunit tests for the cache API
  38  *
  39  * @copyright  2012 Sam Hemelryk
  40  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  41  */
  42 class core_cache_testcase extends advanced_testcase {
  43
  44     /**
  45      * Set things back to the default before each test.
  46      */
  47     public function setUp() {
  48         parent::setUp();
  49         cache_factory::reset();
  50         cache_config_testing::create_default_configuration();
  51     }
  52
  53     /**
  54      * Final task is to reset the cache system
  55      */
  56     public static function tearDownAfterClass() {
  57         parent::tearDownAfterClass();
  58         cache_factory::reset();
  59     }
  60
  61     /**
  62      * Returns the expected application cache store.
  63      * @return string
  64      */
  65     protected function get_expected_application_cache_store() {
  66         global $CFG;
  67         $expected = 'cachestore_file';
  68
  69         // Verify if we are using any of the available ways to use a different application store within tests.
  70         if (defined('TEST_CACHE_USING_APPLICATION_STORE') && preg_match('#[a-zA-Z][a-zA-Z0-9_]*#', TEST_CACHE_USING_APPLICATION_STORE)) {
  71             // 1st way. Using some of the testing servers.
  72             $expected = 'cachestore_'.(string)TEST_CACHE_USING_APPLICATION_STORE;
  73
  74         } else if (defined('TEST_CACHE_USING_ALT_CACHE_CONFIG_PATH') && TEST_CACHE_USING_ALT_CACHE_CONFIG_PATH && !empty($CFG->altcacheconfigpath)) {
  75             // 2nd way. Using an alternative configuration.
  76             $defaultstores = cache_helper::get_stores_suitable_for_mode_default();
  77             $instance = cache_config::instance();
  78             // Iterate over defined mode mappings until we get an application one not being the default.
  79             foreach ($instance->get_mode_mappings() as $mapping) {
  80                 // If the store is not for application mode, ignore.
  81                 if ($mapping['mode'] !== cache_store::MODE_APPLICATION) {
  82                     continue;
  83                 }
  84                 // If the store matches some default mapping store name, ignore.
  85                 if (array_key_exists($mapping['store'], $defaultstores) && !empty($defaultstores[$mapping['store']]['default'])) {
  86                     continue;
  87                 }
  88                 // Arrived here, have found an application mode store not being the default mapped one (file),
  89                 // that's the one we are using in the configuration for sure.
  90                 $expected = 'cachestore_'.$mapping['store'];
  91             }
  92         }
  93
  94         return $expected;
  95     }
  96
  97     /**
  98      * Tests cache configuration
  99      */
 100     public function test_cache_config() {
 101         global $CFG;
 102
 103         if (defined('TEST_CACHE_USING_ALT_CACHE_CONFIG_PATH') && TEST_CACHE_USING_ALT_CACHE_CONFIG_PATH &&
 104             !empty($CFG->altcacheconfigpath)) {
 105             // We need to skip this test - it checks the default config structure, but very likely we arn't using the
 106             // default config structure here so theres no point in running the test.
 107             $this->markTestSkipped('Skipped testing default cache config structure as alt cache path is being used.');
 108         }
 109
 110         if (defined('TEST_CACHE_USING_APPLICATION_STORE')) {
 111             // We need to skip this test - it checks the default config structure, but very likely we arn't using the
 112             // default config structure here because we are testing against an alternative application store.
 113             $this->markTestSkipped('Skipped testing default cache config structure as alt application store is being used.');
 114         }
 115
 116         $instance = cache_config::instance();
 117         $this->assertInstanceOf('cache_config_testing', $instance);
 118
 119         $this->assertTrue(cache_config_testing::config_file_exists());
 120
 121         $stores = $instance->get_all_stores();
 122         $this->assertCount(3, $stores);
 123         foreach ($stores as $name => $store) {
 124             // Check its an array.
 125             $this->assertInternalType('array', $store);
 126             // Check the name is the key.
 127             $this->assertEquals($name, $store['name']);
 128             // Check that it has been declared default.
 129             $this->assertTrue($store['default']);
 130             // Required attributes = name + plugin + configuration + modes + features.
 131             $this->assertArrayHasKey('name', $store);
 132             $this->assertArrayHasKey('plugin', $store);
 133             $this->assertArrayHasKey('configuration', $store);
 134             $this->assertArrayHasKey('modes', $store);
 135             $this->assertArrayHasKey('features', $store);
 136         }
 137
 138         $modemappings = $instance->get_mode_mappings();
 139         $this->assertCount(3, $modemappings);
 140         $modes = array(
 141             cache_store::MODE_APPLICATION => false,
 142             cache_store::MODE_SESSION => false,
 143             cache_store::MODE_REQUEST => false,
 144         );
 145         foreach ($modemappings as $mapping) {
 146             // We expect 3 properties.
 147             $this->assertCount(3, $mapping);
 148             // Required attributes = mode + store.
 149             $this->assertArrayHasKey('mode', $mapping);
 150             $this->assertArrayHasKey('store', $mapping);
 151             // Record the mode.
 152             $modes[$mapping['mode']] = true;
 153         }
 154
 155         // Must have the default 3 modes and no more.
 156         $this->assertCount(3, $mapping);
 157         foreach ($modes as $mode) {
 158             $this->assertTrue($mode);
 159         }
 160
 161         $definitions = $instance->get_definitions();
 162         // The event invalidation definition is required for the cache API and must be there.
 163         $this->assertArrayHasKey('core/eventinvalidation', $definitions);
 164
 165         $definitionmappings = $instance->get_definition_mappings();
 166         foreach ($definitionmappings as $mapping) {
 167             // Required attributes = definition + store.
 168             $this->assertArrayHasKey('definition', $mapping);
 169             $this->assertArrayHasKey('store', $mapping);
 170         }
 171     }
 172
 173     /**
 174      * Tests for cache keys that would break on windows.
 175      */
 176     public function test_windows_nasty_keys() {
 177         $instance = cache_config_testing::instance();
 178         $instance->phpunit_add_definition('phpunit/windowskeytest', array(
 179             'mode' => cache_store::MODE_APPLICATION,
 180             'component' => 'phpunit',
 181             'area' => 'windowskeytest',
 182             'simplekeys' => true,
 183             'simpledata' => true
 184         ));
 185         $cache = cache::make('phpunit', 'windowskeytest');
 186         $this->assertTrue($cache->set('contest', 'test data 1'));
 187         $this->assertEquals('test data 1', $cache->get('contest'));
 188     }
 189
 190     /**
 191      * Tests set_identifiers fails post cache creation.
 192      *
 193      * set_identifiers cannot be called after initial cache instantiation, as you need to create a difference cache.
 194      */
 195     public function test_set_identifiers() {
 196         $instance = cache_config_testing::instance();
 197         $instance->phpunit_add_definition('phpunit/identifier', array(
 198             'mode' => cache_store::MODE_APPLICATION,
 199             'component' => 'phpunit',
 200             'area' => 'identifier',
 201             'simplekeys' => true,
 202             'simpledata' => true,
 203             'staticacceleration' => true
 204         ));
 205         $cache = cache::make('phpunit', 'identifier', array('area'));
 206         $this->assertTrue($cache->set('contest', 'test data 1'));
 207         $this->assertEquals('test data 1', $cache->get('contest'));
 208
 209         $this->expectException('coding_exception');
 210         $cache->set_identifiers(array());
 211     }
 212
 213     /**
 214      * Tests the default application cache
 215      */
 216     public function test_default_application_cache() {
 217         $cache = cache::make_from_params(cache_store::MODE_APPLICATION, 'phpunit', 'applicationtest');
 218         $this->assertInstanceOf('cache_application', $cache);
 219         $this->run_on_cache($cache);
 220
 221         $instance = cache_config_testing::instance(true);
 222         $instance->phpunit_add_definition('phpunit/test_default_application_cache', array(
 223             'mode' => cache_store::MODE_APPLICATION,
 224             'component' => 'phpunit',
 225             'area' => 'test_default_application_cache',
 226             'staticacceleration' => true,
 227             'staticaccelerationsize' => 1
 228         ));
 229         $cache = cache::make('phpunit', 'test_default_application_cache');
 230         $this->assertInstanceOf('cache_application', $cache);
 231         $this->run_on_cache($cache);
 232     }
 233
 234     /**
 235      * Tests the default session cache
 236      */
 237     public function test_default_session_cache() {
 238         $cache = cache::make_from_params(cache_store::MODE_SESSION, 'phpunit', 'applicationtest');
 239         $this->assertInstanceOf('cache_session', $cache);
 240         $this->run_on_cache($cache);
 241     }
 242
 243     /**
 244      * Tests the default request cache
 245      */
 246     public function test_default_request_cache() {
 247         $cache = cache::make_from_params(cache_store::MODE_REQUEST, 'phpunit', 'applicationtest');
 248         $this->assertInstanceOf('cache_request', $cache);
 249         $this->run_on_cache($cache);
 250     }
 251
 252     /**
 253      * Tests using a cache system when there are no stores available (who knows what the admin did to achieve this).
 254      */
 255     public function test_on_cache_without_store() {
 256         $instance = cache_config_testing::instance(true);
 257         $instance->phpunit_add_definition('phpunit/nostoretest1', array(
 258             'mode' => cache_store::MODE_APPLICATION,
 259             'component' => 'phpunit',
 260             'area' => 'nostoretest1',
 261         ));
 262         $instance->phpunit_add_definition('phpunit/nostoretest2', array(
 263             'mode' => cache_store::MODE_APPLICATION,
 264             'component' => 'phpunit',
 265             'area' => 'nostoretest2',
 266             'staticacceleration' => true
 267         ));
 268         $instance->phpunit_remove_stores();
 269
 270         $cache = cache::make('phpunit', 'nostoretest1');
 271         $this->run_on_cache($cache);
 272
 273         $cache = cache::make('phpunit', 'nostoretest2');
 274         $this->run_on_cache($cache);
 275     }
 276
 277     /**
 278      * Runs a standard series of access and use tests on a cache instance.
 279      *
 280      * This function is great because we can use it to ensure all of the loaders perform exactly the same way.
 281      *
 282      * @param cache_loader $cache
 283      */
 284     protected function run_on_cache(cache_loader $cache) {
 285         $key = 'contestkey';
 286         $datascalars = array('test data', null);
 287         $dataarray = array('contest' => 'data', 'part' => 'two');
 288         $dataobject = (object)$dataarray;
 289
 290         foreach ($datascalars as $datascalar) {
 291             $this->assertTrue($cache->purge());
 292
 293             // Check all read methods.
 294             $this->assertFalse($cache->get($key));
 295             $this->assertFalse($cache->has($key));
 296             $result = $cache->get_many(array($key));
 297             $this->assertCount(1, $result);
 298             $this->assertFalse(reset($result));
 299             $this->assertFalse($cache->has_any(array($key)));
 300             $this->assertFalse($cache->has_all(array($key)));
 301
 302             // Set the data.
 303             $this->assertTrue($cache->set($key, $datascalar));
 304             // Setting it more than once should be permitted.
 305             $this->assertTrue($cache->set($key, $datascalar));
 306
 307             // Recheck the read methods.
 308             $this->assertEquals($datascalar, $cache->get($key));
 309             $this->assertTrue($cache->has($key));
 310             $result = $cache->get_many(array($key));
 311             $this->assertCount(1, $result);
 312             $this->assertEquals($datascalar, reset($result));
 313             $this->assertTrue($cache->has_any(array($key)));
 314             $this->assertTrue($cache->has_all(array($key)));
 315
 316             // Delete it.
 317             $this->assertTrue($cache->delete($key));
 318
 319             // Check its gone.
 320             $this->assertFalse($cache->get($key));
 321             $this->assertFalse($cache->has($key));
 322         }
 323
 324         // Test arrays.
 325         $this->assertTrue($cache->set($key, $dataarray));
 326         $this->assertEquals($dataarray, $cache->get($key));
 327
 328         // Test objects.
 329         $this->assertTrue($cache->set($key, $dataobject));
 330         $this->assertEquals($dataobject, $cache->get($key));
 331
 332         $starttime = microtime(true);
 333         $specobject = new cache_phpunit_dummy_object('red', 'blue', $starttime);
 334         $this->assertTrue($cache->set($key, $specobject));
 335         $result = $cache->get($key);
 336         $this->assertInstanceOf('cache_phpunit_dummy_object', $result);
 337         $this->assertEquals('red_ptc_wfc', $result->property1);
 338         $this->assertEquals('blue_ptc_wfc', $result->property2);
 339         $this->assertGreaterThan($starttime, $result->propertytime);
 340
 341         // Test array of objects.
 342         $specobject = new cache_phpunit_dummy_object('red', 'blue', $starttime);
 343         $data = new cacheable_object_array(array(
 344             clone($specobject),
 345             clone($specobject),
 346             clone($specobject))
 347         );
 348         $this->assertTrue($cache->set($key, $data));
 349         $result = $cache->get($key);
 350         $this->assertInstanceOf('cacheable_object_array', $result);
 351         $this->assertCount(3, $data);
 352         foreach ($result as $item) {
 353             $this->assertInstanceOf('cache_phpunit_dummy_object', $item);
 354             $this->assertEquals('red_ptc_wfc', $item->property1);
 355             $this->assertEquals('blue_ptc_wfc', $item->property2);
 356             // Ensure that wake from cache is called in all cases.
 357             $this->assertGreaterThan($starttime, $item->propertytime);
 358         }
 359
 360         // Test set many.
 361         $cache->set_many(array('key1' => 'data1', 'key2' => 'data2', 'key3' => null));
 362         $this->assertEquals('data1', $cache->get('key1'));
 363         $this->assertEquals('data2', $cache->get('key2'));
 364         $this->assertEquals(null, $cache->get('key3'));
 365         $this->assertTrue($cache->delete('key1'));
 366         $this->assertTrue($cache->delete('key2'));
 367         $this->assertTrue($cache->delete('key3'));
 368
 369         $cache->set_many(array(
 370             'key1' => array(1, 2, 3),
 371             'key2' => array(3, 2, 1),
 372         ));
 373         $this->assertInternalType('array', $cache->get('key1'));
 374         $this->assertInternalType('array', $cache->get('key2'));
 375         $this->assertCount(3, $cache->get('key1'));
 376         $this->assertCount(3, $cache->get('key2'));
 377         $this->assertInternalType('array', $cache->get_many(array('key1', 'key2')));
 378         $this->assertCount(2, $cache->get_many(array('key1', 'key2')));
 379         $this->assertEquals(2, $cache->delete_many(array('key1', 'key2')));
 380
 381         // Test delete many.
 382         $this->assertTrue($cache->set('key1', 'data1'));
 383         $this->assertTrue($cache->set('key2', 'data2'));
 384         $this->assertTrue($cache->set('key3', null));
 385
 386         $this->assertEquals('data1', $cache->get('key1'));
 387         $this->assertEquals('data2', $cache->get('key2'));
 388         $this->assertEquals(null, $cache->get('key3'));
 389
 390         $this->assertEquals(3, $cache->delete_many(array('key1', 'key2', 'key3')));
 391
 392         $this->assertFalse($cache->get('key1'));
 393         $this->assertFalse($cache->get('key2'));
 394         $this->assertFalse($cache->get('key3'));
 395
 396         // Quick reference test.
 397         $obj = new stdClass;
 398         $obj->key = 'value';
 399         $ref =& $obj;
 400         $this->assertTrue($cache->set('obj', $obj));
 401
 402         $obj->key = 'eulav';
 403         $var = $cache->get('obj');
 404         $this->assertInstanceOf('stdClass', $var);
 405         $this->assertEquals('value', $var->key);
 406
 407         $ref->key = 'eulav';
 408         $var = $cache->get('obj');
 409         $this->assertInstanceOf('stdClass', $var);
 410         $this->assertEquals('value', $var->key);
 411
 412         $this->assertTrue($cache->delete('obj'));
 413
 414         // Deep reference test.
 415         $obj1 = new stdClass;
 416         $obj1->key = 'value';
 417         $obj2 = new stdClass;
 418         $obj2->key = 'test';
 419         $obj3 = new stdClass;
 420         $obj3->key = 'pork';
 421         $obj1->subobj =& $obj2;
 422         $obj2->subobj =& $obj3;
 423         $this->assertTrue($cache->set('obj', $obj1));
 424
 425         $obj1->key = 'eulav';
 426         $obj2->key = 'tset';
 427         $obj3->key = 'krop';
 428         $var = $cache->get('obj');
 429         $this->assertInstanceOf('stdClass', $var);
 430         $this->assertEquals('value', $var->key);
 431         $this->assertInstanceOf('stdClass', $var->subobj);
 432         $this->assertEquals('test', $var->subobj->key);
 433         $this->assertInstanceOf('stdClass', $var->subobj->subobj);
 434         $this->assertEquals('pork', $var->subobj->subobj->key);
 435         $this->assertTrue($cache->delete('obj'));
 436
 437         // Death reference test... basically we don't want this to die.
 438         $obj = new stdClass;
 439         $obj->key = 'value';
 440         $obj->self =& $obj;
 441         $this->assertTrue($cache->set('obj', $obj));
 442         $var = $cache->get('obj');
 443         $this->assertInstanceOf('stdClass', $var);
 444         $this->assertEquals('value', $var->key);
 445
 446         // Reference test after retrieve.
 447         $obj = new stdClass;
 448         $obj->key = 'value';
 449         $this->assertTrue($cache->set('obj', $obj));
 450
 451         $var1 = $cache->get('obj');
 452         $this->assertInstanceOf('stdClass', $var1);
 453         $this->assertEquals('value', $var1->key);
 454         $var1->key = 'eulav';
 455         $this->assertEquals('eulav', $var1->key);
 456
 457         $var2 = $cache->get('obj');
 458         $this->assertInstanceOf('stdClass', $var2);
 459         $this->assertEquals('value', $var2->key);
 460
 461         $this->assertTrue($cache->delete('obj'));
 462
 463         // Death reference test on get_many... basically we don't want this to die.
 464         $obj = new stdClass;
 465         $obj->key = 'value';
 466         $obj->self =& $obj;
 467         $this->assertEquals(1, $cache->set_many(array('obj' => $obj)));
 468         $var = $cache->get_many(array('obj'));
 469         $this->assertInstanceOf('stdClass', $var['obj']);
 470         $this->assertEquals('value', $var['obj']->key);
 471
 472         // Reference test after retrieve.
 473         $obj = new stdClass;
 474         $obj->key = 'value';
 475         $this->assertEquals(1, $cache->set_many(array('obj' => $obj)));
 476
 477         $var1 = $cache->get_many(array('obj'));
 478         $this->assertInstanceOf('stdClass', $var1['obj']);
 479         $this->assertEquals('value', $var1['obj']->key);
 480         $var1['obj']->key = 'eulav';
 481         $this->assertEquals('eulav', $var1['obj']->key);
 482
 483         $var2 = $cache->get_many(array('obj'));
 484         $this->assertInstanceOf('stdClass', $var2['obj']);
 485         $this->assertEquals('value', $var2['obj']->key);
 486
 487         $this->assertTrue($cache->delete('obj'));
 488
 489         // Test strictness exceptions.
 490         try {
 491             $cache->get('exception', MUST_EXIST);
 492             $this->fail('Exception expected from cache::get using MUST_EXIST');
 493         } catch (Exception $e) {
 494             $this->assertTrue(true);
 495         }
 496         try {
 497             $cache->get_many(array('exception1', 'exception2'), MUST_EXIST);
 498             $this->fail('Exception expected from cache::get_many using MUST_EXIST');
 499         } catch (Exception $e) {
 500             $this->assertTrue(true);
 501         }
 502         $cache->set('test', 'test');
 503         try {
 504             $cache->get_many(array('test', 'exception'), MUST_EXIST);
 505             $this->fail('Exception expected from cache::get_many using MUST_EXIST');
 506         } catch (Exception $e) {
 507             $this->assertTrue(true);
 508         }
 509     }
 510
 511     /**
 512      * Tests a definition using a data loader
 513      */
 514     public function test_definition_data_loader() {
 515         $instance = cache_config_testing::instance(true);
 516         $instance->phpunit_add_definition('phpunit/datasourcetest', array(
 517             'mode' => cache_store::MODE_APPLICATION,
 518             'component' => 'phpunit',
 519             'area' => 'datasourcetest',
 520             'datasource' => 'cache_phpunit_dummy_datasource',
 521             'datasourcefile' => 'cache/tests/fixtures/lib.php'
 522         ));
 523
 524         $cache = cache::make('phpunit', 'datasourcetest');
 525         $this->assertInstanceOf('cache_application', $cache);
 526
 527         // Purge it to be sure.
 528         $this->assertTrue($cache->purge());
 529         // It won't be there yet.
 530         $this->assertFalse($cache->has('Test'));
 531         // It should load it ;).
 532         $this->assertTrue($cache->has('Test', true));
 533
 534         // Purge it to be sure.
 535         $this->assertTrue($cache->purge());
 536         $this->assertEquals('Test has no value really.', $cache->get('Test'));
 537
 538         // Test multiple values.
 539         $this->assertTrue($cache->purge());
 540         $this->assertTrue($cache->set('b', 'B'));
 541         $result = $cache->get_many(array('a', 'b', 'c'));
 542         $this->assertInternalType('array', $result);
 543         $this->assertCount(3, $result);
 544         $this->assertArrayHasKey('a', $result);
 545         $this->assertArrayHasKey('b', $result);
 546         $this->assertArrayHasKey('c', $result);
 547         $this->assertEquals('a has no value really.', $result['a']);
 548         $this->assertEquals('B', $result['b']);
 549         $this->assertEquals('c has no value really.', $result['c']);
 550     }
 551
 552     /**
 553      * Tests a definition using an overridden loader
 554      */
 555     public function test_definition_overridden_loader() {
 556         $instance = cache_config_testing::instance(true);
 557         $instance->phpunit_add_definition('phpunit/overridetest', array(
 558             'mode' => cache_store::MODE_APPLICATION,
 559             'component' => 'phpunit',
 560             'area' => 'overridetest',
 561             'overrideclass' => 'cache_phpunit_dummy_overrideclass',
 562             'overrideclassfile' => 'cache/tests/fixtures/lib.php'
 563         ));
 564         $cache = cache::make('phpunit', 'overridetest');
 565         $this->assertInstanceOf('cache_phpunit_dummy_overrideclass', $cache);
 566         $this->assertInstanceOf('cache_application', $cache);
 567         // Purge it to be sure.
 568         $this->assertTrue($cache->purge());
 569         // It won't be there yet.
 570         $this->assertFalse($cache->has('Test'));
 571         // Add it.
 572         $this->assertTrue($cache->set('Test', 'Test has no value really.'));
 573         // Check its there.
 574         $this->assertEquals('Test has no value really.', $cache->get('Test'));
 575     }
 576
 577     /**
 578      * Test the mappingsonly setting.
 579      */
 580     public function test_definition_mappings_only() {
 581         /** @var cache_config_testing $instance */
 582         $instance = cache_config_testing::instance(true);
 583         $instance->phpunit_add_definition('phpunit/mappingsonly', array(
 584             'mode' => cache_store::MODE_APPLICATION,
 585             'component' => 'phpunit',
 586             'area' => 'mappingsonly',
 587             'mappingsonly' => true
 588         ), false);
 589         $instance->phpunit_add_definition('phpunit/nonmappingsonly', array(
 590             'mode' => cache_store::MODE_APPLICATION,
 591             'component' => 'phpunit',
 592             'area' => 'nonmappingsonly',
 593             'mappingsonly' => false
 594         ), false);
 595
 596         $cacheonly = cache::make('phpunit', 'mappingsonly');
 597         $this->assertInstanceOf('cache_application', $cacheonly);
 598         $this->assertEquals('cachestore_dummy', $cacheonly->phpunit_get_store_class());
 599
 600         $expected = $this->get_expected_application_cache_store();
 601         $cachenon = cache::make('phpunit', 'nonmappingsonly');
 602         $this->assertInstanceOf('cache_application', $cachenon);
 603         $this->assertEquals($expected, $cachenon->phpunit_get_store_class());
 604     }
 605
 606     /**
 607      * Test a very basic definition.
 608      */
 609     public function test_definition() {
 610         $instance = cache_config_testing::instance();
 611         $instance->phpunit_add_definition('phpunit/test', array(
 612             'mode' => cache_store::MODE_APPLICATION,
 613             'component' => 'phpunit',
 614             'area' => 'test',
 615         ));
 616         $cache = cache::make('phpunit', 'test');
 617
 618         $this->assertTrue($cache->set('testkey1', 'test data 1'));
 619         $this->assertEquals('test data 1', $cache->get('testkey1'));
 620         $this->assertTrue($cache->set('testkey2', 'test data 2'));
 621         $this->assertEquals('test data 2', $cache->get('testkey2'));
 622     }
 623
 624     /**
 625      * Test a definition using the simple keys.
 626      */
 627     public function test_definition_simplekeys() {
 628         $instance = cache_config_testing::instance();
 629         $instance->phpunit_add_definition('phpunit/simplekeytest', array(
 630             'mode' => cache_store::MODE_APPLICATION,
 631             'component' => 'phpunit',
 632             'area' => 'simplekeytest',
 633             'simplekeys' => true
 634         ));
 635         $cache = cache::make('phpunit', 'simplekeytest');
 636
 637         $this->assertTrue($cache->set('testkey1', 'test data 1'));
 638         $this->assertEquals('test data 1', $cache->get('testkey1'));
 639         $this->assertTrue($cache->set('testkey2', 'test data 2'));
 640         $this->assertEquals('test data 2', $cache->get('testkey2'));
 641
 642         $cache->purge();
 643
 644         $this->assertTrue($cache->set('1', 'test data 1'));
 645         $this->assertEquals('test data 1', $cache->get('1'));
 646         $this->assertTrue($cache->set('2', 'test data 2'));
 647         $this->assertEquals('test data 2', $cache->get('2'));
 648     }
 649
 650     /**
 651      * Test a negative TTL on an application cache.
 652      */
 653     public function test_application_ttl_negative() {
 654         $instance = cache_config_testing::instance(true);
 655         $instance->phpunit_add_definition('phpunit/ttltest', array(
 656             'mode' => cache_store::MODE_APPLICATION,
 657             'component' => 'phpunit',
 658             'area' => 'ttltest',
 659             'ttl' => -86400 // Set to a day in the past to be extra sure.
 660         ));
 661         $cache = cache::make('phpunit', 'ttltest');
 662         $this->assertInstanceOf('cache_application', $cache);
 663
 664         // Purge it to be sure.
 665         $this->assertTrue($cache->purge());
 666         // It won't be there yet.
 667         $this->assertFalse($cache->has('Test'));
 668         // Set it now.
 669         $this->assertTrue($cache->set('Test', 'Test'));
 670         // Check its not there.
 671         $this->assertFalse($cache->has('Test'));
 672         // Double check by trying to get it.
 673         $this->assertFalse($cache->get('Test'));
 674
 675         // Test with multiple keys.
 676         $this->assertEquals(3, $cache->set_many(array('a' => 'A', 'b' => 'B', 'c' => 'C')));
 677         $result = $cache->get_many(array('a', 'b', 'c'));
 678         $this->assertInternalType('array', $result);
 679         $this->assertCount(3, $result);
 680         $this->assertArrayHasKey('a', $result);
 681         $this->assertArrayHasKey('b', $result);
 682         $this->assertArrayHasKey('c', $result);
 683         $this->assertFalse($result['a']);
 684         $this->assertFalse($result['b']);
 685         $this->assertFalse($result['c']);
 686
 687         // Test with multiple keys including missing ones.
 688         $result = $cache->get_many(array('a', 'c', 'e'));
 689         $this->assertInternalType('array', $result);
 690         $this->assertCount(3, $result);
 691         $this->assertArrayHasKey('a', $result);
 692         $this->assertArrayHasKey('c', $result);
 693         $this->assertArrayHasKey('e', $result);
 694         $this->assertFalse($result['a']);
 695         $this->assertFalse($result['c']);
 696         $this->assertFalse($result['e']);
 697     }
 698
 699     /**
 700      * Test a positive TTL on an application cache.
 701      */
 702     public function test_application_ttl_positive() {
 703         $instance = cache_config_testing::instance(true);
 704         $instance->phpunit_add_definition('phpunit/ttltest', array(
 705             'mode' => cache_store::MODE_APPLICATION,
 706             'component' => 'phpunit',
 707             'area' => 'ttltest',
 708             'ttl' => 86400 // Set to a day in the future to be extra sure.
 709         ));
 710         $cache = cache::make('phpunit', 'ttltest');
 711         $this->assertInstanceOf('cache_application', $cache);
 712
 713         // Purge it to be sure.
 714         $this->assertTrue($cache->purge());
 715         // It won't be there yet.
 716         $this->assertFalse($cache->has('Test'));
 717         // Set it now.
 718         $this->assertTrue($cache->set('Test', 'Test'));
 719         // Check its there.
 720         $this->assertTrue($cache->has('Test'));
 721         // Double check by trying to get it.
 722         $this->assertEquals('Test', $cache->get('Test'));
 723
 724         // Test with multiple keys.
 725         $this->assertEquals(3, $cache->set_many(array('a' => 'A', 'b' => 'B', 'c' => 'C')));
 726         $result = $cache->get_many(array('a', 'b', 'c'));
 727         $this->assertInternalType('array', $result);
 728         $this->assertCount(3, $result);
 729         $this->assertArrayHasKey('a', $result);
 730         $this->assertArrayHasKey('b', $result);
 731         $this->assertArrayHasKey('c', $result);
 732         $this->assertEquals('A', $result['a']);
 733         $this->assertEquals('B', $result['b']);
 734         $this->assertEquals('C', $result['c']);
 735
 736         // Test with multiple keys including missing ones.
 737         $result = $cache->get_many(array('a', 'c', 'e'));
 738         $this->assertInternalType('array', $result);
 739         $this->assertCount(3, $result);
 740         $this->assertArrayHasKey('a', $result);
 741         $this->assertArrayHasKey('c', $result);
 742         $this->assertArrayHasKey('e', $result);
 743         $this->assertEquals('A', $result['a']);
 744         $this->assertEquals('C', $result['c']);
 745         $this->assertEquals(false, $result['e']);
 746     }
 747
 748     /**
 749      * Test a negative TTL on an session cache.
 750      */
 751     public function test_session_ttl_positive() {
 752         $instance = cache_config_testing::instance(true);
 753         $instance->phpunit_add_definition('phpunit/ttltest', array(
 754             'mode' => cache_store::MODE_SESSION,
 755             'component' => 'phpunit',
 756             'area' => 'ttltest',
 757             'ttl' => 86400 // Set to a day in the future to be extra sure.
 758         ));
 759         $cache = cache::make('phpunit', 'ttltest');
 760         $this->assertInstanceOf('cache_session', $cache);
 761
 762         // Purge it to be sure.
 763         $this->assertTrue($cache->purge());
 764         // It won't be there yet.
 765         $this->assertFalse($cache->has('Test'));
 766         // Set it now.
 767         $this->assertTrue($cache->set('Test', 'Test'));
 768         // Check its there.
 769         $this->assertTrue($cache->has('Test'));
 770         // Double check by trying to get it.
 771         $this->assertEquals('Test', $cache->get('Test'));
 772
 773         // Test with multiple keys.
 774         $this->assertEquals(3, $cache->set_many(array('a' => 'A', 'b' => 'B', 'c' => 'C')));
 775         $result = $cache->get_many(array('a', 'b', 'c'));
 776         $this->assertInternalType('array', $result);
 777         $this->assertCount(3, $result);
 778         $this->assertArrayHasKey('a', $result);
 779         $this->assertArrayHasKey('b', $result);
 780         $this->assertArrayHasKey('c', $result);
 781         $this->assertEquals('A', $result['a']);
 782         $this->assertEquals('B', $result['b']);
 783         $this->assertEquals('C', $result['c']);
 784
 785         // Test with multiple keys including missing ones.
 786         $result = $cache->get_many(array('a', 'c', 'e'));
 787         $this->assertInternalType('array', $result);
 788         $this->assertCount(3, $result);
 789         $this->assertArrayHasKey('a', $result);
 790         $this->assertArrayHasKey('c', $result);
 791         $this->assertArrayHasKey('e', $result);
 792         $this->assertEquals('A', $result['a']);
 793         $this->assertEquals('C', $result['c']);
 794         $this->assertEquals(false, $result['e']);
 795     }
 796
 797     /**
 798      * Tests manual locking operations on an application cache
 799      */
 800     public function test_application_manual_locking() {
 801         $instance = cache_config_testing::instance();
 802         $instance->phpunit_add_definition('phpunit/lockingtest', array(
 803             'mode' => cache_store::MODE_APPLICATION,
 804             'component' => 'phpunit',
 805             'area' => 'lockingtest'
 806         ));
 807         $cache1 = cache::make('phpunit', 'lockingtest');
 808         $cache2 = clone($cache1);
 809
 810         $this->assertTrue($cache1->set('testkey', 'test data'));
 811         $this->assertTrue($cache2->set('testkey', 'test data'));
 812
 813         $this->assertTrue($cache1->acquire_lock('testkey'));
 814         $this->assertFalse($cache2->acquire_lock('testkey'));
 815
 816         $this->assertTrue($cache1->check_lock_state('testkey'));
 817         $this->assertFalse($cache2->check_lock_state('testkey'));
 818
 819         $this->assertTrue($cache1->release_lock('testkey'));
 820         $this->assertFalse($cache2->release_lock('testkey'));
 821
 822         $this->assertTrue($cache1->set('testkey', 'test data'));
 823         $this->assertTrue($cache2->set('testkey', 'test data'));
 824     }
 825
 826     /**
 827      * Tests application cache event invalidation
 828      */
 829     public function test_application_event_invalidation() {
 830         $instance = cache_config_testing::instance();
 831         $instance->phpunit_add_definition('phpunit/eventinvalidationtest', array(
 832             'mode' => cache_store::MODE_APPLICATION,
 833             'component' => 'phpunit',
 834             'area' => 'eventinvalidationtest',
 835             'invalidationevents' => array(
 836                 'crazyevent'
 837             )
 838         ));
 839         $cache = cache::make('phpunit', 'eventinvalidationtest');
 840
 841         $this->assertTrue($cache->set('testkey1', 'test data 1'));
 842         $this->assertEquals('test data 1', $cache->get('testkey1'));
 843         $this->assertTrue($cache->set('testkey2', 'test data 2'));
 844         $this->assertEquals('test data 2', $cache->get('testkey2'));
 845
 846         // Test invalidating a single entry.
 847         cache_helper::invalidate_by_event('crazyevent', array('testkey1'));
 848
 849         $this->assertFalse($cache->get('testkey1'));
 850         $this->assertEquals('test data 2', $cache->get('testkey2'));
 851
 852         $this->assertTrue($cache->set('testkey1', 'test data 1'));
 853
 854         // Test invalidating both entries.
 855         cache_helper::invalidate_by_event('crazyevent', array('testkey1', 'testkey2'));
 856
 857         $this->assertFalse($cache->get('testkey1'));
 858         $this->assertFalse($cache->get('testkey2'));
 859     }
 860
 861     /**
 862      * Tests session cache event invalidation
 863      */
 864     public function test_session_event_invalidation() {
 865         $instance = cache_config_testing::instance();
 866         $instance->phpunit_add_definition('phpunit/test_session_event_invalidation', array(
 867             'mode' => cache_store::MODE_SESSION,
 868             'component' => 'phpunit',
 869             'area' => 'test_session_event_invalidation',
 870             'invalidationevents' => array(
 871                 'crazyevent'
 872             )
 873         ));
 874         $cache = cache::make('phpunit', 'test_session_event_invalidation');
 875         $this->assertInstanceOf('cache_session', $cache);
 876
 877         $this->assertTrue($cache->set('testkey1', 'test data 1'));
 878         $this->assertEquals('test data 1', $cache->get('testkey1'));
 879         $this->assertTrue($cache->set('testkey2', 'test data 2'));
 880         $this->assertEquals('test data 2', $cache->get('testkey2'));
 881
 882         // Test invalidating a single entry.
 883         cache_helper::invalidate_by_event('crazyevent', array('testkey1'));
 884
 885         $this->assertFalse($cache->get('testkey1'));
 886         $this->assertEquals('test data 2', $cache->get('testkey2'));
 887
 888         $this->assertTrue($cache->set('testkey1', 'test data 1'));
 889
 890         // Test invalidating both entries.
 891         cache_helper::invalidate_by_event('crazyevent', array('testkey1', 'testkey2'));
 892
 893         $this->assertFalse($cache->get('testkey1'));
 894         $this->assertFalse($cache->get('testkey2'));
 895     }
 896
 897     /**
 898      * Tests application cache definition invalidation
 899      */
 900     public function test_application_definition_invalidation() {
 901         $instance = cache_config_testing::instance();
 902         $instance->phpunit_add_definition('phpunit/definitioninvalidation', array(
 903             'mode' => cache_store::MODE_APPLICATION,
 904             'component' => 'phpunit',
 905             'area' => 'definitioninvalidation'
 906         ));
 907         $cache = cache::make('phpunit', 'definitioninvalidation');
 908         $this->assertTrue($cache->set('testkey1', 'test data 1'));
 909         $this->assertEquals('test data 1', $cache->get('testkey1'));
 910         $this->assertTrue($cache->set('testkey2', 'test data 2'));
 911         $this->assertEquals('test data 2', $cache->get('testkey2'));
 912
 913         cache_helper::invalidate_by_definition('phpunit', 'definitioninvalidation', array(), 'testkey1');
 914
 915         $this->assertFalse($cache->get('testkey1'));
 916         $this->assertEquals('test data 2', $cache->get('testkey2'));
 917
 918         $this->assertTrue($cache->set('testkey1', 'test data 1'));
 919
 920         cache_helper::invalidate_by_definition('phpunit', 'definitioninvalidation', array(), array('testkey1'));
 921
 922         $this->assertFalse($cache->get('testkey1'));
 923         $this->assertEquals('test data 2', $cache->get('testkey2'));
 924
 925         $this->assertTrue($cache->set('testkey1', 'test data 1'));
 926
 927         cache_helper::invalidate_by_definition('phpunit', 'definitioninvalidation', array(), array('testkey1', 'testkey2'));
 928
 929         $this->assertFalse($cache->get('testkey1'));
 930         $this->assertFalse($cache->get('testkey2'));
 931     }
 932
 933     /**
 934      * Tests session cache definition invalidation
 935      */
 936     public function test_session_definition_invalidation() {
 937         $instance = cache_config_testing::instance();
 938         $instance->phpunit_add_definition('phpunit/test_session_definition_invalidation', array(
 939             'mode' => cache_store::MODE_SESSION,
 940             'component' => 'phpunit',
 941             'area' => 'test_session_definition_invalidation'
 942         ));
 943         $cache = cache::make('phpunit', 'test_session_definition_invalidation');
 944         $this->assertInstanceOf('cache_session', $cache);
 945         $this->assertTrue($cache->set('testkey1', 'test data 1'));
 946         $this->assertEquals('test data 1', $cache->get('testkey1'));
 947         $this->assertTrue($cache->set('testkey2', 'test data 2'));
 948         $this->assertEquals('test data 2', $cache->get('testkey2'));
 949
 950         cache_helper::invalidate_by_definition('phpunit', 'test_session_definition_invalidation', array(), 'testkey1');
 951
 952         $this->assertFalse($cache->get('testkey1'));
 953         $this->assertEquals('test data 2', $cache->get('testkey2'));
 954
 955         $this->assertTrue($cache->set('testkey1', 'test data 1'));
 956
 957         cache_helper::invalidate_by_definition('phpunit', 'test_session_definition_invalidation', array(),
 958                 array('testkey1'));
 959
 960         $this->assertFalse($cache->get('testkey1'));
 961         $this->assertEquals('test data 2', $cache->get('testkey2'));
 962
 963         $this->assertTrue($cache->set('testkey1', 'test data 1'));
 964
 965         cache_helper::invalidate_by_definition('phpunit', 'test_session_definition_invalidation', array(),
 966                 array('testkey1', 'testkey2'));
 967
 968         $this->assertFalse($cache->get('testkey1'));
 969         $this->assertFalse($cache->get('testkey2'));
 970     }
 971
 972     /**
 973      * Tests application cache event invalidation over a distributed setup.
 974      */
 975     public function test_distributed_application_event_invalidation() {
 976         global $CFG;
 977         // This is going to be an intense wee test.
 978         // We need to add data the to cache, invalidate it by event, manually force it back without MUC knowing to simulate a
 979         // disconnected/distributed setup (think load balanced server using local cache), instantiate the cache again and finally
 980         // check that it is not picked up.
 981         $instance = cache_config_testing::instance();
 982         $instance->phpunit_add_definition('phpunit/eventinvalidationtest', array(
 983             'mode' => cache_store::MODE_APPLICATION,
 984             'component' => 'phpunit',
 985             'area' => 'eventinvalidationtest',
 986             'simplekeys' => true,
 987             'simpledata' => true,
 988             'invalidationevents' => array(
 989                 'crazyevent'
 990             )
 991         ));
 992         $cache = cache::make('phpunit', 'eventinvalidationtest');
 993         $this->assertTrue($cache->set('testkey1', 'test data 1'));
 994         $this->assertEquals('test data 1', $cache->get('testkey1'));
 995
 996         cache_helper::invalidate_by_event('crazyevent', array('testkey1'));
 997
 998         $this->assertFalse($cache->get('testkey1'));
 999
1000         // OK data added, data invalidated, and invalidation time has been set.
1001         // Now we need to manually add back the data and adjust the invalidation time.
1002         $hash = md5(cache_store::MODE_APPLICATION.'/phpunit/eventinvalidationtest/'.$CFG->wwwroot.'phpunit');
1003         $timefile = $CFG->dataroot."/cache/cachestore_file/default_application/phpunit_eventinvalidationtest/las-cache/lastinvalidation-$hash.cache";
1004         // Make sure the file is correct.
1005         $this->assertTrue(file_exists($timefile));
1006         $timecont = serialize(cache::now(true) - 60); // Back 60sec in the past to force it to re-invalidate.
1007         make_writable_directory(dirname($timefile));
1008         file_put_contents($timefile, $timecont);
1009         $this->assertTrue(file_exists($timefile));
1010
1011         $datafile = $CFG->dataroot."/cache/cachestore_file/default_application/phpunit_eventinvalidationtest/tes-cache/testkey1-$hash.cache";
1012         $datacont = serialize("test data 1");
1013         make_writable_directory(dirname($datafile));
1014         file_put_contents($datafile, $datacont);
1015         $this->assertTrue(file_exists($datafile));
1016
1017         // Test 1: Rebuild without the event and test its there.
1018         cache_factory::reset();
1019         $instance = cache_config_testing::instance();
1020         $instance->phpunit_add_definition('phpunit/eventinvalidationtest', array(
1021             'mode' => cache_store::MODE_APPLICATION,
1022             'component' => 'phpunit',
1023             'area' => 'eventinvalidationtest',
1024             'simplekeys' => true,
1025             'simpledata' => true,
1026         ));
1027         $cache = cache::make('phpunit', 'eventinvalidationtest');
1028         $this->assertEquals('test data 1', $cache->get('testkey1'));
1029
1030         // Test 2: Rebuild and test the invalidation of the event via the invalidation cache.
1031         cache_factory::reset();
1032
1033         $instance = cache_config_testing::instance();
1034         $instance->phpunit_add_definition('phpunit/eventinvalidationtest', array(
1035             'mode' => cache_store::MODE_APPLICATION,
1036             'component' => 'phpunit',
1037             'area' => 'eventinvalidationtest',
1038             'simplekeys' => true,
1039             'simpledata' => true,
1040             'invalidationevents' => array(
1041                 'crazyevent'
1042             )
1043         ));
1044
1045         $cache = cache::make('phpunit', 'eventinvalidationtest');
1046         $this->assertFalse($cache->get('testkey1'));
1047
1048         // Test 3: Verify that an existing lastinvalidation cache file is updated when needed.
1049
1050         // Make a new cache class.  This should should invalidate testkey2.
1051         $cache = cache::make('phpunit', 'eventinvalidationtest');
1052
1053         // Invalidation token should have been reset.
1054         $this->assertEquals(cache::get_purge_token(), $cache->get('lastinvalidation'));
1055
1056         // Set testkey2 data.
1057         $cache->set('testkey2', 'test data 2');
1058
1059         // Backdate the event invalidation time by 30 seconds.
1060         $invalidationcache = cache::make('core', 'eventinvalidation');
1061         $invalidationcache->set('crazyevent', array('testkey2' => cache::now() - 30));
1062
1063         // Lastinvalidation should already be cache::now().
1064         $this->assertEquals(cache::get_purge_token(), $cache->get('lastinvalidation'));
1065
1066         // Set it to 15 seconds ago so that we know if it changes.
1067         $pasttime = cache::now(true) - 15;
1068         $cache->set('lastinvalidation', $pasttime);
1069
1070         // Make a new cache class.  This should not invalidate anything.
1071         cache_factory::instance()->reset_cache_instances();
1072         $cache = cache::make('phpunit', 'eventinvalidationtest');
1073
1074         // Lastinvalidation shouldn't change since it was already newer than invalidation event.
1075         $this->assertEquals($pasttime, $cache->get('lastinvalidation'));
1076
1077         // Now set the event invalidation to newer than the lastinvalidation time.
1078         $invalidationcache->set('crazyevent', array('testkey2' => cache::now() - 5));
1079         // Make a new cache class.  This should should invalidate testkey2.
1080         cache_factory::instance()->reset_cache_instances();
1081         $cache = cache::make('phpunit', 'eventinvalidationtest');
1082         // Lastinvalidation timestamp should have updated to cache::now().
1083         $this->assertEquals(cache::get_purge_token(), $cache->get('lastinvalidation'));
1084
1085         // Now simulate a purge_by_event 5 seconds ago.
1086         $invalidationcache = cache::make('core', 'eventinvalidation');
1087         $invalidationcache->set('crazyevent', array('purged' => cache::now(true) - 5));
1088         // Set our lastinvalidation timestamp to 15 seconds ago.
1089         $cache->set('lastinvalidation', cache::now(true) - 15);
1090         // Make a new cache class.  This should invalidate the cache.
1091         cache_factory::instance()->reset_cache_instances();
1092         $cache = cache::make('phpunit', 'eventinvalidationtest');
1093         // Lastinvalidation timestamp should have updated to cache::now().
1094         $this->assertEquals(cache::get_purge_token(), $cache->get('lastinvalidation'));
1095
1096     }
1097
1098     /**
1099      * Tests application cache event purge
1100      */
1101     public function test_application_event_purge() {
1102         $instance = cache_config_testing::instance();
1103         $instance->phpunit_add_definition('phpunit/eventpurgetest', array(
1104             'mode' => cache_store::MODE_APPLICATION,
1105             'component' => 'phpunit',
1106             'area' => 'eventpurgetest',
1107             'invalidationevents' => array(
1108                 'crazyevent'
1109             )
1110         ));
1111         $instance->phpunit_add_definition('phpunit/eventpurgetestaccelerated', array(
1112             'mode' => cache_store::MODE_APPLICATION,
1113             'component' => 'phpunit',
1114             'area' => 'eventpurgetestaccelerated',
1115             'staticacceleration' => true,
1116             'invalidationevents' => array(
1117                 'crazyevent'
1118             )
1119         ));
1120         $cache = cache::make('phpunit', 'eventpurgetest');
1121
1122         $this->assertTrue($cache->set('testkey1', 'test data 1'));
1123         $this->assertEquals('test data 1', $cache->get('testkey1'));
1124         $this->assertTrue($cache->set('testkey2', 'test data 2'));
1125         $this->assertEquals('test data 2', $cache->get('testkey2'));
1126
1127         // Purge the event.
1128         cache_helper::purge_by_event('crazyevent');
1129
1130         // Check things have been removed.
1131         $this->assertFalse($cache->get('testkey1'));
1132         $this->assertFalse($cache->get('testkey2'));
1133
1134         // Now test the static acceleration array.
1135         $cache = cache::make('phpunit', 'eventpurgetestaccelerated');
1136         $this->assertTrue($cache->set('testkey1', 'test data 1'));
1137         $this->assertEquals('test data 1', $cache->get('testkey1'));
1138         $this->assertTrue($cache->set('testkey2', 'test data 2'));
1139         $this->assertEquals('test data 2', $cache->get('testkey2'));
1140
1141         // Purge the event.
1142         cache_helper::purge_by_event('crazyevent');
1143
1144         // Check things have been removed.
1145         $this->assertFalse($cache->get('testkey1'));
1146         $this->assertFalse($cache->get('testkey2'));
1147     }
1148
1149     /**
1150      * Tests session cache event purge
1151      */
1152     public function test_session_event_purge() {
1153         $instance = cache_config_testing::instance();
1154         $instance->phpunit_add_definition('phpunit/eventpurgetest', array(
1155             'mode' => cache_store::MODE_SESSION,
1156             'component' => 'phpunit',
1157             'area' => 'eventpurgetest',
1158             'invalidationevents' => array(
1159                 'crazyevent'
1160             )
1161         ));
1162         $instance->phpunit_add_definition('phpunit/eventpurgetestaccelerated', array(
1163             'mode' => cache_store::MODE_SESSION,
1164             'component' => 'phpunit',
1165             'area' => 'eventpurgetestaccelerated',
1166             'staticacceleration' => true,
1167             'invalidationevents' => array(
1168                 'crazyevent'
1169             )
1170         ));
1171         $cache = cache::make('phpunit', 'eventpurgetest');
1172
1173         $this->assertTrue($cache->set('testkey1', 'test data 1'));
1174         $this->assertEquals('test data 1', $cache->get('testkey1'));
1175         $this->assertTrue($cache->set('testkey2', 'test data 2'));
1176         $this->assertEquals('test data 2', $cache->get('testkey2'));
1177
1178         // Purge the event.
1179         cache_helper::purge_by_event('crazyevent');
1180
1181         // Check things have been removed.
1182         $this->assertFalse($cache->get('testkey1'));
1183         $this->assertFalse($cache->get('testkey2'));
1184
1185         // Now test the static acceleration array.
1186         $cache = cache::make('phpunit', 'eventpurgetestaccelerated');
1187         $this->assertTrue($cache->set('testkey1', 'test data 1'));
1188         $this->assertEquals('test data 1', $cache->get('testkey1'));
1189         $this->assertTrue($cache->set('testkey2', 'test data 2'));
1190         $this->assertEquals('test data 2', $cache->get('testkey2'));
1191
1192         // Purge the event.
1193         cache_helper::purge_by_event('crazyevent');
1194
1195         // Check things have been removed.
1196         $this->assertFalse($cache->get('testkey1'));
1197         $this->assertFalse($cache->get('testkey2'));
1198     }
1199
1200     /**
1201      * Tests application cache definition purge
1202      */
1203     public function test_application_definition_purge() {
1204         $instance = cache_config_testing::instance();
1205         $instance->phpunit_add_definition('phpunit/definitionpurgetest', array(
1206             'mode' => cache_store::MODE_APPLICATION,
1207             'component' => 'phpunit',
1208             'area' => 'definitionpurgetest',
1209             'invalidationevents' => array(
1210                 'crazyevent'
1211             )
1212         ));
1213         $cache = cache::make('phpunit', 'definitionpurgetest');
1214
1215         $this->assertTrue($cache->set('testkey1', 'test data 1'));
1216         $this->assertEquals('test data 1', $cache->get('testkey1'));
1217         $this->assertTrue($cache->set('testkey2', 'test data 2'));
1218         $this->assertEquals('test data 2', $cache->get('testkey2'));
1219
1220         // Purge the event.
1221         cache_helper::purge_by_definition('phpunit', 'definitionpurgetest');
1222
1223         // Check things have been removed.
1224         $this->assertFalse($cache->get('testkey1'));
1225         $this->assertFalse($cache->get('testkey2'));
1226     }
1227
1228     /**
1229      * Test the use of an alt path.
1230      * If we can generate a config instance we are done :)
1231      */
1232     public function test_alt_cache_path() {
1233         global $CFG;
1234         if ((defined('TEST_CACHE_USING_ALT_CACHE_CONFIG_PATH') && TEST_CACHE_USING_ALT_CACHE_CONFIG_PATH) || !empty($CFG->altcacheconfigpath)) {
1235             $this->markTestSkipped('Skipped testing alt cache path as it is already being used.');
1236         }
1237         $this->resetAfterTest();
1238         $CFG->altcacheconfigpath = $CFG->dataroot.'/cache/altcacheconfigpath';
1239         $instance = cache_config_testing::instance();
1240         $this->assertInstanceOf('cache_config', $instance);
1241     }
1242
1243     /**
1244      * Test disabling the cache stores.
1245      */
1246     public function test_disable_stores() {
1247         $instance = cache_config_testing::instance();
1248         $instance->phpunit_add_definition('phpunit/disabletest1', array(
1249             'mode' => cache_store::MODE_APPLICATION,
1250             'component' => 'phpunit',
1251             'area' => 'disabletest1'
1252         ));
1253         $instance->phpunit_add_definition('phpunit/disabletest2', array(
1254             'mode' => cache_store::MODE_SESSION,
1255             'component' => 'phpunit',
1256             'area' => 'disabletest2'
1257         ));
1258         $instance->phpunit_add_definition('phpunit/disabletest3', array(
1259             'mode' => cache_store::MODE_REQUEST,
1260             'component' => 'phpunit',
1261             'area' => 'disabletest3'
1262         ));
1263
1264         $caches = array(
1265             'disabletest1' => cache::make('phpunit', 'disabletest1'),
1266             'disabletest2' => cache::make('phpunit', 'disabletest2'),
1267             'disabletest3' => cache::make('phpunit', 'disabletest3')
1268         );
1269
1270         $this->assertInstanceOf('cache_phpunit_application', $caches['disabletest1']);
1271         $this->assertInstanceOf('cache_phpunit_session', $caches['disabletest2']);
1272         $this->assertInstanceOf('cache_phpunit_request', $caches['disabletest3']);
1273
1274         $this->assertEquals('cachestore_file', $caches['disabletest1']->phpunit_get_store_class());
1275         $this->assertEquals('cachestore_session', $caches['disabletest2']->phpunit_get_store_class());
1276         $this->assertEquals('cachestore_static', $caches['disabletest3']->phpunit_get_store_class());
1277
1278         foreach ($caches as $cache) {
1279             $this->assertFalse($cache->get('test'));
1280             $this->assertTrue($cache->set('test', 'test'));
1281             $this->assertEquals('test', $cache->get('test'));
1282         }
1283
1284         cache_factory::disable_stores();
1285
1286         $caches = array(
1287             'disabletest1' => cache::make('phpunit', 'disabletest1'),
1288             'disabletest2' => cache::make('phpunit', 'disabletest2'),
1289             'disabletest3' => cache::make('phpunit', 'disabletest3')
1290         );
1291
1292         $this->assertInstanceOf('cache_phpunit_application', $caches['disabletest1']);
1293         $this->assertInstanceOf('cache_phpunit_session', $caches['disabletest2']);
1294         $this->assertInstanceOf('cache_phpunit_request', $caches['disabletest3']);
1295
1296         $this->assertEquals('cachestore_dummy', $caches['disabletest1']->phpunit_get_store_class());
1297         $this->assertEquals('cachestore_dummy', $caches['disabletest2']->phpunit_get_store_class());
1298         $this->assertEquals('cachestore_dummy', $caches['disabletest3']->phpunit_get_store_class());
1299
1300         foreach ($caches as $cache) {
1301             $this->assertFalse($cache->get('test'));
1302             $this->assertTrue($cache->set('test', 'test'));
1303             $this->assertEquals('test', $cache->get('test'));
1304         }
1305     }
1306
1307     /**
1308      * Test disabling the cache.
1309      */
1310     public function test_disable() {
1311         global $CFG;
1312
1313         if ((defined('TEST_CACHE_USING_ALT_CACHE_CONFIG_PATH') && TEST_CACHE_USING_ALT_CACHE_CONFIG_PATH) || !empty($CFG->altcacheconfigpath)) {
1314             // We can't run this test as it requires us to delete the cache configuration script which we just
1315             // cant do with a custom path in play.
1316             $this->markTestSkipped('Skipped testing cache disable functionality as alt cache path is being used.');
1317         }
1318
1319         $configfile = $CFG->dataroot.'/muc/config.php';
1320
1321         // The config file will not exist yet as we've not done anything with the cache.
1322         // reset_all_data removes the file and without a call to create a configuration it doesn't exist
1323         // as yet.
1324         $this->assertFileNotExists($configfile);
1325
1326         // Disable the cache
1327         cache_phpunit_factory::phpunit_disable();
1328
1329         // Check we get the expected disabled factory.
1330         $factory = cache_factory::instance();
1331         $this->assertInstanceOf('cache_factory_disabled', $factory);
1332
1333         // Check we get the expected disabled config.
1334         $config = $factory->create_config_instance();
1335         $this->assertInstanceOf('cache_config_disabled', $config);
1336
1337         // Check we get the expected disabled caches.
1338         $cache = cache::make('phpunit', 'disable');
1339         $this->assertInstanceOf('cache_disabled', $cache);
1340
1341         // Test an application cache.
1342         $cache = cache::make_from_params(cache_store::MODE_APPLICATION, 'phpunit', 'disable');
1343         $this->assertInstanceOf('cache_disabled', $cache);
1344
1345         $this->assertFalse(file_exists($configfile));
1346
1347         $this->assertFalse($cache->get('test'));
1348         $this->assertFalse($cache->set('test', 'test'));
1349         $this->assertFalse($cache->delete('test'));
1350         $this->assertTrue($cache->purge());
1351
1352         // Test a session cache.
1353         $cache = cache::make_from_params(cache_store::MODE_SESSION, 'phpunit', 'disable');
1354         $this->assertInstanceOf('cache_disabled', $cache);
1355
1356         $this->assertFalse(file_exists($configfile));
1357
1358         $this->assertFalse($cache->get('test'));
1359         $this->assertFalse($cache->set('test', 'test'));
1360         $this->assertFalse($cache->delete('test'));
1361         $this->assertTrue($cache->purge());
1362
1363         // Finally test a request cache.
1364         $cache = cache::make_from_params(cache_store::MODE_REQUEST, 'phpunit', 'disable');
1365         $this->assertInstanceOf('cache_disabled', $cache);
1366
1367         $this->assertFalse(file_exists($configfile));
1368
1369         $this->assertFalse($cache->get('test'));
1370         $this->assertFalse($cache->set('test', 'test'));
1371         $this->assertFalse($cache->delete('test'));
1372         $this->assertTrue($cache->purge());
1373
1374         cache_factory::reset();
1375
1376         $factory = cache_factory::instance(true);
1377         $config = $factory->create_config_instance();
1378         $this->assertEquals('cache_config_testing', get_class($config));
1379     }
1380
1381     /**
1382      * Test that multiple application loaders work ok.
1383      */
1384     public function test_multiple_application_loaders() {
1385         $instance = cache_config_testing::instance(true);
1386         $instance->phpunit_add_file_store('phpunittest1');
1387         $instance->phpunit_add_file_store('phpunittest2');
1388         $instance->phpunit_add_definition('phpunit/multi_loader', array(
1389             'mode' => cache_store::MODE_APPLICATION,
1390             'component' => 'phpunit',
1391             'area' => 'multi_loader'
1392         ));
1393         $instance->phpunit_add_definition_mapping('phpunit/multi_loader', 'phpunittest1', 3);
1394         $instance->phpunit_add_definition_mapping('phpunit/multi_loader', 'phpunittest2', 2);
1395
1396         $cache = cache::make('phpunit', 'multi_loader');
1397         $this->assertInstanceOf('cache_application', $cache);
1398         $this->assertFalse($cache->get('test'));
1399         $this->assertTrue($cache->set('test', 'test'));
1400         $this->assertEquals('test', $cache->get('test'));
1401         $this->assertTrue($cache->delete('test'));
1402         $this->assertFalse($cache->get('test'));
1403         $this->assertTrue($cache->set('test', 'test'));
1404         $this->assertTrue($cache->purge());
1405         $this->assertFalse($cache->get('test'));
1406
1407         // Test the many commands.
1408         $this->assertEquals(3, $cache->set_many(array('a' => 'A', 'b' => 'B', 'c' => 'C')));
1409         $result = $cache->get_many(array('a', 'b', 'c'));
1410         $this->assertInternalType('array', $result);
1411         $this->assertCount(3, $result);
1412         $this->assertArrayHasKey('a', $result);
1413         $this->assertArrayHasKey('b', $result);
1414         $this->assertArrayHasKey('c', $result);
1415         $this->assertEquals('A', $result['a']);
1416         $this->assertEquals('B', $result['b']);
1417         $this->assertEquals('C', $result['c']);
1418         $this->assertEquals($result, $cache->get_many(array('a', 'b', 'c')));
1419         $this->assertEquals(2, $cache->delete_many(array('a', 'c')));
1420         $result = $cache->get_many(array('a', 'b', 'c'));
1421         $this->assertInternalType('array', $result);
1422         $this->assertCount(3, $result);
1423         $this->assertArrayHasKey('a', $result);
1424         $this->assertArrayHasKey('b', $result);
1425         $this->assertArrayHasKey('c', $result);
1426         $this->assertFalse($result['a']);
1427         $this->assertEquals('B', $result['b']);
1428         $this->assertFalse($result['c']);
1429
1430         // Test non-recursive deletes.
1431         $this->assertTrue($cache->set('test', 'test'));
1432         $this->assertSame('test', $cache->get('test'));
1433         $this->assertTrue($cache->delete('test', false));
1434         // We should still have it on a deeper loader.
1435         $this->assertSame('test', $cache->get('test'));
1436         // Test non-recusive with many functions.
1437         $this->assertSame(3, $cache->set_many(array(
1438             'one' => 'one',
1439             'two' => 'two',
1440             'three' => 'three'
1441         )));
1442         $this->assertSame('one', $cache->get('one'));
1443         $this->assertSame(array('two' => 'two', 'three' => 'three'), $cache->get_many(array('two', 'three')));
1444         $this->assertSame(3, $cache->delete_many(array('one', 'two', 'three'), false));
1445         $this->assertSame('one', $cache->get('one'));
1446         $this->assertSame(array('two' => 'two', 'three' => 'three'), $cache->get_many(array('two', 'three')));
1447     }
1448
1449     /**
1450      * Test that multiple application loaders work ok.
1451      */
1452     public function test_multiple_session_loaders() {
1453         /* @var cache_config_testing $instance */
1454         $instance = cache_config_testing::instance(true);
1455         $instance->phpunit_add_session_store('phpunittest1');
1456         $instance->phpunit_add_session_store('phpunittest2');
1457         $instance->phpunit_add_definition('phpunit/multi_loader', array(
1458             'mode' => cache_store::MODE_SESSION,
1459             'component' => 'phpunit',
1460             'area' => 'multi_loader'
1461         ));
1462         $instance->phpunit_add_definition_mapping('phpunit/multi_loader', 'phpunittest1', 3);
1463         $instance->phpunit_add_definition_mapping('phpunit/multi_loader', 'phpunittest2', 2);
1464
1465         $cache = cache::make('phpunit', 'multi_loader');
1466         $this->assertInstanceOf('cache_session', $cache);
1467         $this->assertFalse($cache->get('test'));
1468         $this->assertTrue($cache->set('test', 'test'));
1469         $this->assertEquals('test', $cache->get('test'));
1470         $this->assertTrue($cache->delete('test'));
1471         $this->assertFalse($cache->get('test'));
1472         $this->assertTrue($cache->set('test', 'test'));
1473         $this->assertTrue($cache->purge());
1474         $this->assertFalse($cache->get('test'));
1475
1476         // Test the many commands.
1477         $this->assertEquals(3, $cache->set_many(array('a' => 'A', 'b' => 'B', 'c' => 'C')));
1478         $result = $cache->get_many(array('a', 'b', 'c'));
1479         $this->assertInternalType('array', $result);
1480         $this->assertCount(3, $result);
1481         $this->assertArrayHasKey('a', $result);
1482         $this->assertArrayHasKey('b', $result);
1483         $this->assertArrayHasKey('c', $result);
1484         $this->assertEquals('A', $result['a']);
1485         $this->assertEquals('B', $result['b']);
1486         $this->assertEquals('C', $result['c']);
1487         $this->assertEquals($result, $cache->get_many(array('a', 'b', 'c')));
1488         $this->assertEquals(2, $cache->delete_many(array('a', 'c')));
1489         $result = $cache->get_many(array('a', 'b', 'c'));
1490         $this->assertInternalType('array', $result);
1491         $this->assertCount(3, $result);
1492         $this->assertArrayHasKey('a', $result);
1493         $this->assertArrayHasKey('b', $result);
1494         $this->assertArrayHasKey('c', $result);
1495         $this->assertFalse($result['a']);
1496         $this->assertEquals('B', $result['b']);
1497         $this->assertFalse($result['c']);
1498
1499         // Test non-recursive deletes.
1500         $this->assertTrue($cache->set('test', 'test'));
1501         $this->assertSame('test', $cache->get('test'));
1502         $this->assertTrue($cache->delete('test', false));
1503         // We should still have it on a deeper loader.
1504         $this->assertSame('test', $cache->get('test'));
1505         // Test non-recusive with many functions.
1506         $this->assertSame(3, $cache->set_many(array(
1507             'one' => 'one',
1508             'two' => 'two',
1509             'three' => 'three'
1510         )));
1511         $this->assertSame('one', $cache->get('one'));
1512         $this->assertSame(array('two' => 'two', 'three' => 'three'), $cache->get_many(array('two', 'three')));
1513         $this->assertSame(3, $cache->delete_many(array('one', 'two', 'three'), false));
1514         $this->assertSame('one', $cache->get('one'));
1515         $this->assertSame(array('two' => 'two', 'three' => 'three'), $cache->get_many(array('two', 'three')));
1516     }
1517
1518     /**
1519      * Test switching users with session caches.
1520      */
1521     public function test_session_cache_switch_user() {
1522         $this->resetAfterTest(true);
1523         $cache = cache::make_from_params(cache_store::MODE_SESSION, 'phpunit', 'sessioncache');
1524         $user1 = $this->getDataGenerator()->create_user();
1525         $user2 = $this->getDataGenerator()->create_user();
1526
1527         // Log in as the first user.
1528         $this->setUser($user1);
1529         $sesskey1 = sesskey();
1530
1531         // Set a basic value in the cache.
1532         $cache->set('var', 1);
1533         $this->assertTrue($cache->has('var'));
1534         $this->assertEquals(1, $cache->get('var'));
1535
1536         // Change to the second user.
1537         $this->setUser($user2);
1538         $sesskey2 = sesskey();
1539
1540         // Make sure the cache doesn't give us the data for the last user.
1541         $this->assertNotEquals($sesskey1, $sesskey2);
1542         $this->assertFalse($cache->has('var'));
1543         $this->assertEquals(false, $cache->get('var'));
1544     }
1545
1546     /**
1547      * Test switching users with session caches.
1548      */
1549     public function test_session_cache_switch_user_application_mapping() {
1550         $this->resetAfterTest(true);
1551         $instance = cache_config_testing::instance(true);
1552         $instance->phpunit_add_file_store('testfilestore');
1553         $instance->phpunit_add_definition('phpunit/testappsession', array(
1554             'mode' => cache_store::MODE_SESSION,
1555             'component' => 'phpunit',
1556             'area' => 'testappsession'
1557         ));
1558         $instance->phpunit_add_definition_mapping('phpunit/testappsession', 'testfilestore', 3);
1559         $cache = cache::make('phpunit', 'testappsession');
1560         $user1 = $this->getDataGenerator()->create_user();
1561         $user2 = $this->getDataGenerator()->create_user();
1562
1563         // Log in as the first user.
1564         $this->setUser($user1);
1565         $sesskey1 = sesskey();
1566
1567         // Set a basic value in the cache.
1568         $cache->set('var', 1);
1569         $this->assertTrue($cache->has('var'));
1570         $this->assertEquals(1, $cache->get('var'));
1571
1572         // Change to the second user.
1573         $this->setUser($user2);
1574         $sesskey2 = sesskey();
1575
1576         // Make sure the cache doesn't give us the data for the last user.
1577         $this->assertNotEquals($sesskey1, $sesskey2);
1578         $this->assertFalse($cache->has('var'));
1579         $this->assertEquals(false, $cache->get('var'));
1580     }
1581
1582     /**
1583      * Test two session caches being used at once to confirm collisions don't occur.
1584      */
1585     public function test_dual_session_caches() {
1586         $instance = cache_config_testing::instance(true);
1587         $instance->phpunit_add_definition('phpunit/testsess1', array(
1588             'mode' => cache_store::MODE_SESSION,
1589             'component' => 'phpunit',
1590             'area' => 'testsess1'
1591         ));
1592         $instance->phpunit_add_definition('phpunit/testsess2', array(
1593             'mode' => cache_store::MODE_SESSION,
1594             'component' => 'phpunit',
1595             'area' => 'testsess2'
1596         ));
1597         $cache1 = cache::make('phpunit', 'testsess1');
1598         $cache2 = cache::make('phpunit', 'testsess2');
1599
1600         $this->assertFalse($cache1->has('test'));
1601         $this->assertFalse($cache2->has('test'));
1602
1603         $this->assertTrue($cache1->set('test', '1'));
1604
1605         $this->assertTrue($cache1->has('test'));
1606         $this->assertFalse($cache2->has('test'));
1607
1608         $this->assertTrue($cache2->set('test', '2'));
1609
1610         $this->assertEquals(1, $cache1->get('test'));
1611         $this->assertEquals(2, $cache2->get('test'));
1612
1613         $this->assertTrue($cache1->delete('test'));
1614     }
1615
1616     /**
1617      * Test multiple session caches when switching user.
1618      */
1619     public function test_session_cache_switch_user_multiple() {
1620         $this->resetAfterTest(true);
1621         $cache1 = cache::make_from_params(cache_store::MODE_SESSION, 'phpunit', 'sessioncache1');
1622         $cache2 = cache::make_from_params(cache_store::MODE_SESSION, 'phpunit', 'sessioncache2');
1623         $user1 = $this->getDataGenerator()->create_user();
1624         $user2 = $this->getDataGenerator()->create_user();
1625
1626         // Log in as the first user.
1627         $this->setUser($user1);
1628         $sesskey1 = sesskey();
1629
1630         // Set a basic value in the caches.
1631         $cache1->set('var', 1);
1632         $cache2->set('var', 2);
1633         $this->assertEquals(1, $cache1->get('var'));
1634         $this->assertEquals(2, $cache2->get('var'));
1635
1636         // Change to the second user.
1637         $this->setUser($user2);
1638         $sesskey2 = sesskey();
1639
1640         // Make sure the cache doesn't give us the data for the last user.
1641         // Also make sure that switching the user has lead to both caches being purged.
1642         $this->assertNotEquals($sesskey1, $sesskey2);
1643         $this->assertEquals(false, $cache1->get('var'));
1644         $this->assertEquals(false, $cache2->get('var'));
1645     }
1646
1647     /**
1648      * Test application locking.
1649      */
1650     public function test_application_locking() {
1651         $instance = cache_config_testing::instance(true);
1652         $instance->phpunit_add_definition('phpunit/test_application_locking', array(
1653             'mode' => cache_store::MODE_APPLICATION,
1654             'component' => 'phpunit',
1655             'area' => 'test_application_locking',
1656             'staticacceleration' => true,
1657             'staticaccelerationsize' => 1,
1658             'requirelockingread' => true,
1659             'requirelockingwrite' => true
1660         ));
1661         $cache = cache::make('phpunit', 'test_application_locking');
1662         $this->assertInstanceOf('cache_application', $cache);
1663
1664         $this->assertTrue($cache->set('a', 'A'));
1665         $this->assertTrue($cache->set('b', 'B'));
1666         $this->assertTrue($cache->set('c', 'C'));
1667         $this->assertEquals('A', $cache->get('a'));
1668         $this->assertEquals(array('b' => 'B', 'c' => 'C'), $cache->get_many(array('b', 'c')));
1669         $this->assertTrue($cache->delete('a'));
1670         $this->assertFalse($cache->has('a'));
1671     }
1672
1673     /**
1674      * Test the static cache_helper method purge_stores_used_by_definition.
1675      */
1676     public function test_purge_stores_used_by_definition() {
1677         $instance = cache_config_testing::instance(true);
1678         $instance->phpunit_add_definition('phpunit/test_purge_stores_used_by_definition', array(
1679             'mode' => cache_store::MODE_APPLICATION,
1680             'component' => 'phpunit',
1681             'area' => 'test_purge_stores_used_by_definition'
1682         ));
1683         $cache = cache::make('phpunit', 'test_purge_stores_used_by_definition');
1684         $this->assertInstanceOf('cache_application', $cache);
1685         $this->assertTrue($cache->set('test', 'test'));
1686         unset($cache);
1687
1688         cache_helper::purge_stores_used_by_definition('phpunit', 'test_purge_stores_used_by_definition');
1689
1690         $cache = cache::make('phpunit', 'test_purge_stores_used_by_definition');
1691         $this->assertInstanceOf('cache_application', $cache);
1692         $this->assertFalse($cache->get('test'));
1693     }
1694
1695     /**
1696      * Test purge routines.
1697      */
1698     public function test_purge_routines() {
1699         $instance = cache_config_testing::instance(true);
1700         $instance->phpunit_add_definition('phpunit/purge1', array(
1701             'mode' => cache_store::MODE_APPLICATION,
1702             'component' => 'phpunit',
1703             'area' => 'purge1'
1704         ));
1705         $instance->phpunit_add_definition('phpunit/purge2', array(
1706             'mode' => cache_store::MODE_APPLICATION,
1707             'component' => 'phpunit',
1708             'area' => 'purge2',
1709             'requireidentifiers' => array(
1710                 'id'
1711             )
1712         ));
1713
1714         $factory = cache_factory::instance();
1715         $definition = $factory->create_definition('phpunit', 'purge1');
1716         $this->assertFalse($definition->has_required_identifiers());
1717         $cache = $factory->create_cache($definition);
1718         $this->assertInstanceOf('cache_application', $cache);
1719         $this->assertTrue($cache->set('test', 'test'));
1720         $this->assertTrue($cache->has('test'));
1721         cache_helper::purge_by_definition('phpunit', 'purge1');
1722         $this->assertFalse($cache->has('test'));
1723
1724         $factory = cache_factory::instance();
1725         $definition = $factory->create_definition('phpunit', 'purge2');
1726         $this->assertTrue($definition->has_required_identifiers());
1727         $cache = $factory->create_cache($definition);
1728         $this->assertInstanceOf('cache_application', $cache);
1729         $this->assertTrue($cache->set('test', 'test'));
1730         $this->assertTrue($cache->has('test'));
1731         cache_helper::purge_stores_used_by_definition('phpunit', 'purge2');
1732         $this->assertFalse($cache->has('test'));
1733
1734         try {
1735             cache_helper::purge_by_definition('phpunit', 'purge2');
1736             $this->fail('Should not be able to purge a definition required identifiers without providing them.');
1737         } catch (coding_exception $ex) {
1738             $this->assertContains('Identifier required for cache has not been provided', $ex->getMessage());
1739         }
1740     }
1741
1742     /**
1743      * Test that the default stores all support searching.
1744      */
1745     public function test_defaults_support_searching() {
1746         $instance = cache_config_testing::instance(true);
1747         $instance->phpunit_add_definition('phpunit/search1', array(
1748             'mode' => cache_store::MODE_APPLICATION,
1749             'component' => 'phpunit',
1750             'area' => 'search1',
1751             'requiresearchable' => true
1752         ));
1753         $instance->phpunit_add_definition('phpunit/search2', array(
1754             'mode' => cache_store::MODE_SESSION,
1755             'component' => 'phpunit',
1756             'area' => 'search2',
1757             'requiresearchable' => true
1758         ));
1759         $instance->phpunit_add_definition('phpunit/search3', array(
1760             'mode' => cache_store::MODE_REQUEST,
1761             'component' => 'phpunit',
1762             'area' => 'search3',
1763             'requiresearchable' => true
1764         ));
1765         $factory = cache_factory::instance();
1766
1767         // Test application cache is searchable.
1768         $definition = $factory->create_definition('phpunit', 'search1');
1769         $this->assertInstanceOf('cache_definition', $definition);
1770         $this->assertEquals(cache_store::IS_SEARCHABLE, $definition->get_requirements_bin() & cache_store::IS_SEARCHABLE);
1771         $cache = $factory->create_cache($definition);
1772         $this->assertInstanceOf('cache_application', $cache);
1773         $this->assertArrayHasKey('cache_is_searchable', $cache->phpunit_get_store_implements());
1774
1775         // Test session cache is searchable.
1776         $definition = $factory->create_definition('phpunit', 'search2');
1777         $this->assertInstanceOf('cache_definition', $definition);
1778         $this->assertEquals(cache_store::IS_SEARCHABLE, $definition->get_requirements_bin() & cache_store::IS_SEARCHABLE);
1779         $cache = $factory->create_cache($definition);
1780         $this->assertInstanceOf('cache_session', $cache);
1781         $this->assertArrayHasKey('cache_is_searchable', $cache->phpunit_get_store_implements());
1782
1783         // Test request cache is searchable.
1784         $definition = $factory->create_definition('phpunit', 'search3');
1785         $this->assertInstanceOf('cache_definition', $definition);
1786         $this->assertEquals(cache_store::IS_SEARCHABLE, $definition->get_requirements_bin() & cache_store::IS_SEARCHABLE);
1787         $cache = $factory->create_cache($definition);
1788         $this->assertInstanceOf('cache_request', $cache);
1789         $this->assertArrayHasKey('cache_is_searchable', $cache->phpunit_get_store_implements());
1790     }
1791
1792     /**
1793      * Test static acceleration
1794      *
1795      * Note: All the assertGreaterThanOrEqual() in this test should be assertGreaterThan() be because of some microtime()
1796      * resolution problems under some OSs / PHP versions, we are accepting equal as valid outcome. For more info see MDL-57147.
1797      */
1798     public function test_static_acceleration() {
1799         $instance = cache_config_testing::instance();
1800         $instance->phpunit_add_definition('phpunit/accelerated', array(
1801             'mode' => cache_store::MODE_APPLICATION,
1802             'component' => 'phpunit',
1803             'area' => 'accelerated',
1804             'staticacceleration' => true,
1805             'staticaccelerationsize' => 3,
1806         ));
1807         $instance->phpunit_add_definition('phpunit/accelerated2', array(
1808             'mode' => cache_store::MODE_APPLICATION,
1809             'component' => 'phpunit',
1810             'area' => 'accelerated2',
1811             'staticacceleration' => true,
1812             'staticaccelerationsize' => 3,
1813         ));
1814         $instance->phpunit_add_definition('phpunit/accelerated3', array(
1815             'mode' => cache_store::MODE_APPLICATION,
1816             'component' => 'phpunit',
1817             'area' => 'accelerated3',
1818             'staticacceleration' => true,
1819             'staticaccelerationsize' => 3,
1820         ));
1821         $instance->phpunit_add_definition('phpunit/accelerated4', array(
1822             'mode' => cache_store::MODE_APPLICATION,
1823             'component' => 'phpunit',
1824             'area' => 'accelerated4',
1825             'staticacceleration' => true,
1826             'staticaccelerationsize' => 4,
1827         ));
1828         $instance->phpunit_add_definition('phpunit/simpledataarea1', array(
1829             'mode' => cache_store::MODE_APPLICATION,
1830             'component' => 'phpunit',
1831             'area' => 'simpledataarea1',
1832             'staticacceleration' => true,
1833             'simpledata' => false
1834         ));
1835         $instance->phpunit_add_definition('phpunit/simpledataarea2', array(
1836             'mode' => cache_store::MODE_APPLICATION,
1837             'component' => 'phpunit',
1838             'area' => 'simpledataarea2',
1839             'staticacceleration' => true,
1840             'simpledata' => true
1841         ));
1842
1843         $cache = cache::make('phpunit', 'accelerated');
1844         $this->assertInstanceOf('cache_phpunit_application', $cache);
1845
1846         // Set and get three elements.
1847         $this->assertTrue($cache->set('a', 'A'));
1848         $this->assertTrue($cache->set('b', 'B'));
1849         $this->assertTrue($cache->set('c', 'C'));
1850         $this->assertEquals('A', $cache->get('a'));
1851         $this->assertEquals(array('b' => 'B', 'c' => 'C'), $cache->get_many(array('b', 'c')));
1852
1853         // Make sure all items are in static acceleration array.
1854         $this->assertEquals('A', $cache->phpunit_static_acceleration_get('a'));
1855         $this->assertEquals('B', $cache->phpunit_static_acceleration_get('b'));
1856         $this->assertEquals('C', $cache->phpunit_static_acceleration_get('c'));
1857
1858         // Add new value and make sure it is in cache and it is in array.
1859         $this->assertTrue($cache->set('d', 'D'));
1860         $this->assertEquals('D', $cache->phpunit_static_acceleration_get('d'));
1861         $this->assertEquals('D', $cache->get('d'));
1862
1863         // Now the least recent accessed item (a) is no longer in acceleration array.
1864         $this->assertFalse($cache->phpunit_static_acceleration_get('a'));
1865         $this->assertEquals('B', $cache->phpunit_static_acceleration_get('b'));
1866         $this->assertEquals('C', $cache->phpunit_static_acceleration_get('c'));
1867
1868         // Adding and deleting element.
1869         $this->assertTrue($cache->set('a', 'A'));
1870         $this->assertTrue($cache->delete('a'));
1871         $this->assertFalse($cache->phpunit_static_acceleration_get('a'));
1872         $this->assertFalse($cache->has('a'));
1873
1874         // Make sure "purge" deletes from the array as well.
1875         $cache->purge();
1876         $this->assertFalse($cache->phpunit_static_acceleration_get('a'));
1877         $this->assertFalse($cache->phpunit_static_acceleration_get('b'));
1878         $this->assertFalse($cache->phpunit_static_acceleration_get('c'));
1879         $this->assertFalse($cache->phpunit_static_acceleration_get('d'));
1880         $this->assertFalse($cache->phpunit_static_acceleration_get('e'));
1881
1882         // Check that the array holds the last accessed items by get/set.
1883         $this->assertTrue($cache->set('a', 'A'));
1884         $this->assertTrue($cache->set('b', 'B'));
1885         $this->assertTrue($cache->set('c', 'C'));
1886         $this->assertTrue($cache->set('d', 'D'));
1887         $this->assertTrue($cache->set('e', 'E'));
1888         $this->assertFalse($cache->phpunit_static_acceleration_get('a'));
1889         $this->assertFalse($cache->phpunit_static_acceleration_get('b'));
1890         $this->assertEquals('C', $cache->phpunit_static_acceleration_get('c'));
1891         $this->assertEquals('D', $cache->phpunit_static_acceleration_get('d'));
1892         $this->assertEquals('E', $cache->phpunit_static_acceleration_get('e'));
1893
1894         // Store a cacheable_object, get many times and ensure each time wake_for_cache is used.
1895         // Both get and get_many are tested.  Two cache entries are used to ensure the times aren't
1896         // confused with multiple calls to get()/get_many().
1897         $startmicrotime = microtime(true);
1898         $cacheableobject = new cache_phpunit_dummy_object(1, 1, $startmicrotime);
1899         $cacheableobject2 = new cache_phpunit_dummy_object(2, 2, $startmicrotime);
1900         $this->assertTrue($cache->set('a', $cacheableobject));
1901         $this->assertTrue($cache->set('b', $cacheableobject2));
1902         $staticaccelerationreturntime = $cache->phpunit_static_acceleration_get('a')->propertytime;
1903         $staticaccelerationreturntimeb = $cache->phpunit_static_acceleration_get('b')->propertytime;
1904         $this->assertGreaterThanOrEqual($startmicrotime, $staticaccelerationreturntime, 'Restore time of static must be newer.');
1905
1906         // Reset the static cache without resetting backing store.
1907         $cache->phpunit_static_acceleration_purge();
1908
1909         // Get the value from the backend store, populating the static cache.
1910         $cachevalue = $cache->get('a');
1911         $this->assertInstanceOf('cache_phpunit_dummy_object', $cachevalue);
1912         $this->assertGreaterThanOrEqual($staticaccelerationreturntime, $cachevalue->propertytime);
1913         $backingstorereturntime = $cachevalue->propertytime;
1914
1915         $results = $cache->get_many(array('b'));
1916         $this->assertInstanceOf('cache_phpunit_dummy_object', $results['b']);
1917         $this->assertGreaterThanOrEqual($staticaccelerationreturntimeb, $results['b']->propertytime);
1918         $backingstorereturntimeb = $results['b']->propertytime;
1919
1920         // Obtain the value again and confirm that static cache is using wake_from_cache.
1921         // Upon failure, the times are not adjusted as wake_from_cache is skipped as the
1922         // value is stored serialized in the static acceleration cache.
1923         $cachevalue = $cache->phpunit_static_acceleration_get('a');
1924         $this->assertInstanceOf('cache_phpunit_dummy_object', $cachevalue);
1925         $this->assertGreaterThanOrEqual($backingstorereturntime, $cachevalue->propertytime);
1926
1927         $results = $cache->get_many(array('b'));
1928         $this->assertInstanceOf('cache_phpunit_dummy_object', $results['b']);
1929         $this->assertGreaterThanOrEqual($backingstorereturntimeb, $results['b']->propertytime);
1930
1931         /** @var cache_phpunit_application $cache */
1932         $cache = cache::make('phpunit', 'accelerated2');
1933         $this->assertInstanceOf('cache_phpunit_application', $cache);
1934
1935         // Check that the array holds the last accessed items by get/set.
1936         $this->assertTrue($cache->set('a', 'A'));
1937         $this->assertTrue($cache->set('b', 'B'));
1938         $this->assertTrue($cache->set('c', 'C'));
1939         $this->assertTrue($cache->set('d', 'D'));
1940         $this->assertTrue($cache->set('e', 'E'));
1941         // Current keys in the array: c, d, e.
1942         $this->assertEquals('C', $cache->phpunit_static_acceleration_get('c'));
1943         $this->assertEquals('D', $cache->phpunit_static_acceleration_get('d'));
1944         $this->assertEquals('E', $cache->phpunit_static_acceleration_get('e'));
1945         $this->assertFalse($cache->phpunit_static_acceleration_get('a'));
1946         $this->assertFalse($cache->phpunit_static_acceleration_get('b'));
1947
1948         $this->assertEquals('A', $cache->get('a'));
1949         // Current keys in the array: d, e, a.
1950         $this->assertEquals('D', $cache->phpunit_static_acceleration_get('d'));
1951         $this->assertEquals('E', $cache->phpunit_static_acceleration_get('e'));
1952         $this->assertEquals('A', $cache->phpunit_static_acceleration_get('a'));
1953         $this->assertFalse($cache->phpunit_static_acceleration_get('b'));
1954         $this->assertFalse($cache->phpunit_static_acceleration_get('c'));
1955
1956         // Current keys in the array: d, e, a.
1957         $this->assertEquals(array('c' => 'C'), $cache->get_many(array('c')));
1958         // Current keys in the array: e, a, c.
1959         $this->assertEquals('E', $cache->phpunit_static_acceleration_get('e'));
1960         $this->assertEquals('A', $cache->phpunit_static_acceleration_get('a'));
1961         $this->assertEquals('C', $cache->phpunit_static_acceleration_get('c'));
1962         $this->assertFalse($cache->phpunit_static_acceleration_get('b'));
1963         $this->assertFalse($cache->phpunit_static_acceleration_get('d'));
1964
1965
1966         $cache = cache::make('phpunit', 'accelerated3');
1967         $this->assertInstanceOf('cache_phpunit_application', $cache);
1968
1969         // Check that the array holds the last accessed items by get/set.
1970         $this->assertTrue($cache->set('a', 'A'));
1971         $this->assertTrue($cache->set('b', 'B'));
1972         $this->assertTrue($cache->set('c', 'C'));
1973         $this->assertTrue($cache->set('d', 'D'));
1974         $this->assertTrue($cache->set('e', 'E'));
1975         $this->assertFalse($cache->phpunit_static_acceleration_get('a'));
1976         $this->assertFalse($cache->phpunit_static_acceleration_get('b'));
1977         $this->assertEquals('C', $cache->phpunit_static_acceleration_get('c'));
1978         $this->assertEquals('D', $cache->phpunit_static_acceleration_get('d'));
1979         $this->assertEquals('E', $cache->phpunit_static_acceleration_get('e'));
1980
1981         $this->assertTrue($cache->set('b', 'B2'));
1982         $this->assertFalse($cache->phpunit_static_acceleration_get('a'));
1983         $this->assertEquals('B2', $cache->phpunit_static_acceleration_get('b'));
1984         $this->assertFalse($cache->phpunit_static_acceleration_get('c'));
1985         $this->assertEquals('D', $cache->phpunit_static_acceleration_get('d'));
1986         $this->assertEquals('E', $cache->phpunit_static_acceleration_get('e'));
1987
1988         $this->assertEquals(2, $cache->set_many(array('b' => 'B3', 'c' => 'C3')));
1989         $this->assertFalse($cache->phpunit_static_acceleration_get('a'));
1990         $this->assertEquals('B3', $cache->phpunit_static_acceleration_get('b'));
1991         $this->assertEquals('C3', $cache->phpunit_static_acceleration_get('c'));
1992         $this->assertFalse($cache->phpunit_static_acceleration_get('d'));
1993         $this->assertEquals('E', $cache->phpunit_static_acceleration_get('e'));
1994
1995         $cache = cache::make('phpunit', 'accelerated4');
1996         $this->assertInstanceOf('cache_phpunit_application', $cache);
1997         $this->assertTrue($cache->set('a', 'A'));
1998         $this->assertTrue($cache->set('a', 'A'));
1999         $this->assertTrue($cache->set('a', 'A'));
2000         $this->assertTrue($cache->set('a', 'A'));
2001         $this->assertTrue($cache->set('a', 'A'));
2002         $this->assertTrue($cache->set('a', 'A'));
2003         $this->assertTrue($cache->set('a', 'A'));
2004         $this->assertEquals('A', $cache->phpunit_static_acceleration_get('a'));
2005         $this->assertEquals('A', $cache->get('a'));
2006
2007         // Setting simpledata to false objects are cloned when retrieving data.
2008         $cache = cache::make('phpunit', 'simpledataarea1');
2009         $notreallysimple = new stdClass();
2010         $notreallysimple->name = 'a';
2011         $cache->set('a', $notreallysimple);
2012         $returnedinstance1 = $cache->get('a');
2013         $returnedinstance2 = $cache->get('a');
2014         $returnedinstance1->name = 'b';
2015         $this->assertEquals('a', $returnedinstance2->name);
2016
2017         // Setting simpledata to true we assume that data does not contain references.
2018         $cache = cache::make('phpunit', 'simpledataarea2');
2019         $notreallysimple = new stdClass();
2020         $notreallysimple->name = 'a';
2021         $cache->set('a', $notreallysimple);
2022         $returnedinstance1 = $cache->get('a');
2023         $returnedinstance2 = $cache->get('a');
2024         $returnedinstance1->name = 'b';
2025         $this->assertEquals('b', $returnedinstance2->name);
2026     }
2027
2028     public function test_identifiers_have_separate_caches() {
2029         $cachepg = cache::make('core', 'databasemeta', array('dbfamily' => 'pgsql'));
2030         $cachepg->set(1, 'here');
2031         $cachemy = cache::make('core', 'databasemeta', array('dbfamily' => 'mysql'));
2032         $cachemy->set(2, 'there');
2033         $this->assertEquals('here', $cachepg->get(1));
2034         $this->assertEquals('there', $cachemy->get(2));
2035         $this->assertFalse($cachemy->get(1));
2036     }
2037
2038     public function test_performance_debug() {
2039         global $CFG;
2040         $this->resetAfterTest(true);
2041         $CFG->perfdebug = 15;
2042
2043         $instance = cache_config_testing::instance();
2044         $applicationid = 'phpunit/applicationperf';
2045         $instance->phpunit_add_definition($applicationid, array(
2046             'mode' => cache_store::MODE_APPLICATION,
2047             'component' => 'phpunit',
2048             'area' => 'applicationperf'
2049         ));
2050         $sessionid = 'phpunit/sessionperf';
2051         $instance->phpunit_add_definition($sessionid, array(
2052             'mode' => cache_store::MODE_SESSION,
2053             'component' => 'phpunit',
2054             'area' => 'sessionperf'
2055         ));
2056         $requestid = 'phpunit/requestperf';
2057         $instance->phpunit_add_definition($requestid, array(
2058             'mode' => cache_store::MODE_REQUEST,
2059             'component' => 'phpunit',
2060             'area' => 'requestperf'
2061         ));
2062
2063         $application = cache::make('phpunit', 'applicationperf');
2064         $session = cache::make('phpunit', 'sessionperf');
2065         $request = cache::make('phpunit', 'requestperf');
2066
2067         // Check that no stats are recorded for these definitions yet.
2068         $stats = cache_helper::get_stats();
2069         $this->assertArrayNotHasKey($applicationid, $stats);
2070         $this->assertArrayHasKey($sessionid, $stats);       // Session cache sets a key on construct.
2071         $this->assertArrayNotHasKey($requestid, $stats);
2072
2073         // Check that stores register misses.
2074         $this->assertFalse($application->get('missMe'));
2075         $this->assertFalse($application->get('missMe'));
2076         $this->assertFalse($session->get('missMe'));
2077         $this->assertFalse($session->get('missMe'));
2078         $this->assertFalse($session->get('missMe'));
2079         $this->assertFalse($request->get('missMe'));
2080         $this->assertFalse($request->get('missMe'));
2081         $this->assertFalse($request->get('missMe'));
2082         $this->assertFalse($request->get('missMe'));
2083
2084         $endstats = cache_helper::get_stats();
2085         $this->assertEquals(2, $endstats[$applicationid]['stores']['cachestore_file']['misses']);
2086         $this->assertEquals(0, $endstats[$applicationid]['stores']['cachestore_file']['hits']);
2087         $this->assertEquals(0, $endstats[$applicationid]['stores']['cachestore_file']['sets']);
2088         $this->assertEquals(3, $endstats[$sessionid]['stores']['cachestore_session']['misses']);
2089         $this->assertEquals(0, $endstats[$sessionid]['stores']['cachestore_session']['hits']);
2090         $this->assertEquals(1, $endstats[$sessionid]['stores']['cachestore_session']['sets']);
2091         $this->assertEquals(4, $endstats[$requestid]['stores']['cachestore_static']['misses']);
2092         $this->assertEquals(0, $endstats[$requestid]['stores']['cachestore_static']['hits']);
2093         $this->assertEquals(0, $endstats[$requestid]['stores']['cachestore_static']['sets']);
2094
2095         $startstats = cache_helper::get_stats();
2096
2097         // Check that stores register sets.
2098         $this->assertTrue($application->set('setMe1', 1));
2099         $this->assertTrue($application->set('setMe2', 2));
2100         $this->assertTrue($session->set('setMe1', 1));
2101         $this->assertTrue($session->set('setMe2', 2));
2102         $this->assertTrue($session->set('setMe3', 3));
2103         $this->assertTrue($request->set('setMe1', 1));
2104         $this->assertTrue($request->set('setMe2', 2));
2105         $this->assertTrue($request->set('setMe3', 3));
2106         $this->assertTrue($request->set('setMe4', 4));
2107
2108         $endstats = cache_helper::get_stats();
2109         $this->assertEquals(0, $endstats[$applicationid]['stores']['cachestore_file']['misses'] -
2110             $startstats[$applicationid]['stores']['cachestore_file']['misses']);
2111         $this->assertEquals(0, $endstats[$applicationid]['stores']['cachestore_file']['hits'] -
2112             $startstats[$applicationid]['stores']['cachestore_file']['hits']);
2113         $this->assertEquals(2, $endstats[$applicationid]['stores']['cachestore_file']['sets'] -
2114             $startstats[$applicationid]['stores']['cachestore_file']['sets']);
2115         $this->assertEquals(0, $endstats[$sessionid]['stores']['cachestore_session']['misses'] -
2116             $startstats[$sessionid]['stores']['cachestore_session']['misses']);
2117         $this->assertEquals(0, $endstats[$sessionid]['stores']['cachestore_session']['hits'] -
2118             $startstats[$sessionid]['stores']['cachestore_session']['hits']);
2119         $this->assertEquals(3, $endstats[$sessionid]['stores']['cachestore_session']['sets'] -
2120             $startstats[$sessionid]['stores']['cachestore_session']['sets']);
2121         $this->assertEquals(0, $endstats[$requestid]['stores']['cachestore_static']['misses'] -
2122             $startstats[$requestid]['stores']['cachestore_static']['misses']);
2123         $this->assertEquals(0, $endstats[$requestid]['stores']['cachestore_static']['hits'] -
2124             $startstats[$requestid]['stores']['cachestore_static']['hits']);
2125         $this->assertEquals(4, $endstats[$requestid]['stores']['cachestore_static']['sets'] -
2126             $startstats[$requestid]['stores']['cachestore_static']['sets']);
2127
2128         $startstats = cache_helper::get_stats();
2129
2130         // Check that stores register hits.
2131         $this->assertEquals($application->get('setMe1'), 1);
2132         $this->assertEquals($application->get('setMe2'), 2);
2133         $this->assertEquals($session->get('setMe1'), 1);
2134         $this->assertEquals($session->get('setMe2'), 2);
2135         $this->assertEquals($session->get('setMe3'), 3);
2136         $this->assertEquals($request->get('setMe1'), 1);
2137         $this->assertEquals($request->get('setMe2'), 2);
2138         $this->assertEquals($request->get('setMe3'), 3);
2139         $this->assertEquals($request->get('setMe4'), 4);
2140
2141         $endstats = cache_helper::get_stats();
2142         $this->assertEquals(0, $endstats[$applicationid]['stores']['cachestore_file']['misses'] -
2143             $startstats[$applicationid]['stores']['cachestore_file']['misses']);
2144         $this->assertEquals(2, $endstats[$applicationid]['stores']['cachestore_file']['hits'] -
2145             $startstats[$applicationid]['stores']['cachestore_file']['hits']);
2146         $this->assertEquals(0, $endstats[$applicationid]['stores']['cachestore_file']['sets'] -
2147             $startstats[$applicationid]['stores']['cachestore_file']['sets']);
2148         $this->assertEquals(0, $endstats[$sessionid]['stores']['cachestore_session']['misses'] -
2149             $startstats[$sessionid]['stores']['cachestore_session']['misses']);
2150         $this->assertEquals(3, $endstats[$sessionid]['stores']['cachestore_session']['hits'] -
2151             $startstats[$sessionid]['stores']['cachestore_session']['hits']);
2152         $this->assertEquals(0, $endstats[$sessionid]['stores']['cachestore_session']['sets'] -
2153             $startstats[$sessionid]['stores']['cachestore_session']['sets']);
2154         $this->assertEquals(0, $endstats[$requestid]['stores']['cachestore_static']['misses'] -
2155             $startstats[$requestid]['stores']['cachestore_static']['misses']);
2156         $this->assertEquals(4, $endstats[$requestid]['stores']['cachestore_static']['hits'] -
2157             $startstats[$requestid]['stores']['cachestore_static']['hits']);
2158         $this->assertEquals(0, $endstats[$requestid]['stores']['cachestore_static']['sets'] -
2159             $startstats[$requestid]['stores']['cachestore_static']['sets']);
2160
2161         $startstats = cache_helper::get_stats();
2162
2163         // Check that stores register through get_many.
2164         $application->get_many(array('setMe1', 'setMe2'));
2165         $session->get_many(array('setMe1', 'setMe2', 'setMe3'));
2166         $request->get_many(array('setMe1', 'setMe2', 'setMe3', 'setMe4'));
2167
2168         $endstats = cache_helper::get_stats();
2169         $this->assertEquals(0, $endstats[$applicationid]['stores']['cachestore_file']['misses'] -
2170             $startstats[$applicationid]['stores']['cachestore_file']['misses']);
2171         $this->assertEquals(2, $endstats[$applicationid]['stores']['cachestore_file']['hits'] -
2172             $startstats[$applicationid]['stores']['cachestore_file']['hits']);
2173         $this->assertEquals(0, $endstats[$applicationid]['stores']['cachestore_file']['sets'] -
2174             $startstats[$applicationid]['stores']['cachestore_file']['sets']);
2175         $this->assertEquals(0, $endstats[$sessionid]['stores']['cachestore_session']['misses'] -
2176             $startstats[$sessionid]['stores']['cachestore_session']['misses']);
2177         $this->assertEquals(3, $endstats[$sessionid]['stores']['cachestore_session']['hits'] -
2178             $startstats[$sessionid]['stores']['cachestore_session']['hits']);
2179         $this->assertEquals(0, $endstats[$sessionid]['stores']['cachestore_session']['sets'] -
2180             $startstats[$sessionid]['stores']['cachestore_session']['sets']);
2181         $this->assertEquals(0, $endstats[$requestid]['stores']['cachestore_static']['misses'] -
2182             $startstats[$requestid]['stores']['cachestore_static']['misses']);
2183         $this->assertEquals(4, $endstats[$requestid]['stores']['cachestore_static']['hits'] -
2184             $startstats[$requestid]['stores']['cachestore_static']['hits']);
2185         $this->assertEquals(0, $endstats[$requestid]['stores']['cachestore_static']['sets'] -
2186             $startstats[$requestid]['stores']['cachestore_static']['sets']);
2187     }
2188
2189     public function test_static_cache() {
2190         global $CFG;
2191         $this->resetAfterTest(true);
2192         $CFG->perfdebug = 15;
2193
2194         // Create cache store with static acceleration.
2195         $instance = cache_config_testing::instance();
2196         $applicationid = 'phpunit/applicationperf';
2197         $instance->phpunit_add_definition($applicationid, array(
2198             'mode' => cache_store::MODE_APPLICATION,
2199             'component' => 'phpunit',
2200             'area' => 'applicationperf',
2201             'simplekeys' => true,
2202             'staticacceleration' => true,
2203             'staticaccelerationsize' => 3
2204         ));
2205
2206         $application = cache::make('phpunit', 'applicationperf');
2207
2208         // Check that stores register sets.
2209         $this->assertTrue($application->set('setMe1', 1));
2210         $this->assertTrue($application->set('setMe2', 0));
2211         $this->assertTrue($application->set('setMe3', array()));
2212         $this->assertTrue($application->get('setMe1') !== false);
2213         $this->assertTrue($application->get('setMe2') !== false);
2214         $this->assertTrue($application->get('setMe3') !== false);
2215
2216         // Check that the static acceleration worked, even on empty arrays and the number 0.
2217         $endstats = cache_helper::get_stats();
2218         $this->assertEquals(0, $endstats[$applicationid]['stores']['** static acceleration **']['misses']);
2219         $this->assertEquals(3, $endstats[$applicationid]['stores']['** static acceleration **']['hits']);
2220     }
2221
2222     public function test_performance_debug_off() {
2223         global $CFG;
2224         $this->resetAfterTest(true);
2225         $CFG->perfdebug = 7;
2226
2227         $instance = cache_config_testing::instance();
2228         $applicationid = 'phpunit/applicationperfoff';
2229         $instance->phpunit_add_definition($applicationid, array(
2230             'mode' => cache_store::MODE_APPLICATION,
2231             'component' => 'phpunit',
2232             'area' => 'applicationperfoff'
2233         ));
2234         $sessionid = 'phpunit/sessionperfoff';
2235         $instance->phpunit_add_definition($sessionid, array(
2236             'mode' => cache_store::MODE_SESSION,
2237             'component' => 'phpunit',
2238             'area' => 'sessionperfoff'
2239         ));
2240         $requestid = 'phpunit/requestperfoff';
2241         $instance->phpunit_add_definition($requestid, array(
2242             'mode' => cache_store::MODE_REQUEST,
2243             'component' => 'phpunit',
2244             'area' => 'requestperfoff'
2245         ));
2246
2247         $application = cache::make('phpunit', 'applicationperfoff');
2248         $session = cache::make('phpunit', 'sessionperfoff');
2249         $request = cache::make('phpunit', 'requestperfoff');
2250
2251         // Check that no stats are recorded for these definitions yet.
2252         $stats = cache_helper::get_stats();
2253         $this->assertArrayNotHasKey($applicationid, $stats);
2254         $this->assertArrayNotHasKey($sessionid, $stats);
2255         $this->assertArrayNotHasKey($requestid, $stats);
2256
2257         // Trigger cache misses, cache sets and cache hits.
2258         $this->assertFalse($application->get('missMe'));
2259         $this->assertTrue($application->set('setMe', 1));
2260         $this->assertEquals(1, $application->get('setMe'));
2261         $this->assertFalse($session->get('missMe'));
2262         $this->assertTrue($session->set('setMe', 3));
2263         $this->assertEquals(3, $session->get('setMe'));
2264         $this->assertFalse($request->get('missMe'));
2265         $this->assertTrue($request->set('setMe', 4));
2266         $this->assertEquals(4, $request->get('setMe'));
2267
2268         // Check that no stats are being recorded for these definitions.
2269         $endstats = cache_helper::get_stats();
2270         $this->assertArrayNotHasKey($applicationid, $endstats);
2271         $this->assertArrayNotHasKey($sessionid, $endstats);
2272         $this->assertArrayNotHasKey($requestid, $endstats);
2273     }
2274
2275     /**
2276      * Tests session cache event purge and subsequent visit in the same request.
2277      *
2278      * This test simulates a cache being created, a value being set, then the value being purged.
2279      * A subsequent use of the same cache is started in the same request which fills the cache.
2280      * A new request is started a short time later.
2281      * The cache should be filled.
2282      */
2283     public function test_session_event_purge_same_second() {
2284         $instance = cache_config_testing::instance();
2285         $instance->phpunit_add_definition('phpunit/eventpurgetest', array(
2286             'mode' => cache_store::MODE_SESSION,
2287             'component' => 'phpunit',
2288             'area' => 'eventpurgetest',
2289             'invalidationevents' => array(
2290                 'crazyevent',
2291             )
2292         ));
2293
2294         // Create the cache, set a value, and immediately purge it by event.
2295         $cache = cache::make('phpunit', 'eventpurgetest');
2296         $cache->set('testkey1', 'test data 1');
2297         $this->assertEquals('test data 1', $cache->get('testkey1'));
2298         cache_helper::purge_by_event('crazyevent');
2299         $this->assertFalse($cache->get('testkey1'));
2300
2301         // Set up the cache again in the same request and add a new value back in.
2302         $factory = \cache_factory::instance();
2303         $factory->reset_cache_instances();
2304         $cache = cache::make('phpunit', 'eventpurgetest');
2305         $cache->set('testkey1', 'test data 2');
2306         $this->assertEquals('test data 2', $cache->get('testkey1'));
2307
2308         // Trick the cache into thinking that this is a new request.
2309         cache_phpunit_cache::simulate_new_request();
2310         $factory = \cache_factory::instance();
2311         $factory->reset_cache_instances();
2312
2313         // Set up the cache again.
2314         // This is a subsequent request at a new time, so we instead the invalidation time will be checked.
2315         // The invalidation time should match the last purged time and the cache will not be re-purged.
2316         $cache = cache::make('phpunit', 'eventpurgetest');
2317         $this->assertEquals('test data 2', $cache->get('testkey1'));
2318     }
2319
2320 }