repository/tests/repositorylib_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  * Repository API unit tests
  19  *
  20  * @package   repository
  21  * @category  phpunit
  22  * @copyright 2012 Dongsheng Cai {@link http://dongsheng.org}
  23  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  */
  25
  26 defined('MOODLE_INTERNAL') || die();
  27
  28 global $CFG;
  29 require_once("$CFG->dirroot/repository/lib.php");
  30
  31 class core_repositorylib_testcase extends advanced_testcase {
  32
  33     /**
  34      * Installing repository tests
  35      *
  36      * @copyright 2012 Dongsheng Cai {@link http://dongsheng.org}
  37      */
  38     public function test_install_repository() {
  39         global $CFG, $DB;
  40
  41         $this->resetAfterTest(true);
  42
  43         $syscontext = context_system::instance();
  44         $repositorypluginname = 'boxnet';
  45         // override repository permission
  46         $capability = 'repository/' . $repositorypluginname . ':view';
  47         $guestroleid = $DB->get_field('role', 'id', array('shortname' => 'guest'));
  48         assign_capability($capability, CAP_ALLOW, $guestroleid, $syscontext->id, true);
  49
  50         $plugintype = new repository_type($repositorypluginname);
  51         $pluginid = $plugintype->create(false);
  52         $this->assertInternalType('int', $pluginid);
  53         $args = array();
  54         $args['type'] = $repositorypluginname;
  55         $repos = repository::get_instances($args);
  56         $repository = reset($repos);
  57         $this->assertInstanceOf('repository', $repository);
  58         $info = $repository->get_meta();
  59         $this->assertEquals($repositorypluginname, $info->type);
  60     }
  61
  62     public function test_get_unused_filename() {
  63         global $USER;
  64
  65         $this->resetAfterTest(true);
  66
  67         $this->setAdminUser();
  68         $fs = get_file_storage();
  69
  70         $draftitemid = null;
  71         $context = context_user::instance($USER->id);
  72         file_prepare_draft_area($draftitemid, $context->id, 'phpunit', 'test_get_unused_filename', 1);
  73
  74         $dummy = array(
  75             'contextid' => $context->id,
  76             'component' => 'user',
  77             'filearea' => 'draft',
  78             'itemid' => $draftitemid,
  79             'filepath' => '/',
  80             'filename' => ''
  81         );
  82
  83         // Create some files.
  84         $existingfiles = array(
  85             'test',
  86             'test.txt',
  87             'test (1).txt',
  88             'test1.txt',
  89             'test1 (1).txt',
  90             'test1 (2).txt',
  91             'test1 (3).txt',
  92             'test1 (My name is Bob).txt',
  93             'test2 (555).txt',
  94             'test3 (1000).txt',
  95             'test3 (1000MB).txt',
  96         );
  97         foreach ($existingfiles as $filename) {
  98             $dummy['filename'] = $filename;
  99             $file = $fs->create_file_from_string($dummy, 'blah! ' . $filename);
 100             $this->assertTrue(repository::draftfile_exists($draftitemid, '/', $filename));
 101         }
 102
 103         // Actual testing.
 104         $this->assertEquals('free.txt', repository::get_unused_filename($draftitemid, '/', 'free.txt'));
 105         $this->assertEquals('test (1)', repository::get_unused_filename($draftitemid, '/', 'test'));
 106         $this->assertEquals('test (2).txt', repository::get_unused_filename($draftitemid, '/', 'test.txt'));
 107         $this->assertEquals('test1 (4).txt', repository::get_unused_filename($draftitemid, '/', 'test1.txt'));
 108         $this->assertEquals('test1 (8).txt', repository::get_unused_filename($draftitemid, '/', 'test1 (8).txt'));
 109         $this->assertEquals('test1 ().txt', repository::get_unused_filename($draftitemid, '/', 'test1 ().txt'));
 110         $this->assertEquals('test2 (556).txt', repository::get_unused_filename($draftitemid, '/', 'test2 (555).txt'));
 111         $this->assertEquals('test3 (1001).txt', repository::get_unused_filename($draftitemid, '/', 'test3 (1000).txt'));
 112         $this->assertEquals('test3 (1000MB) (1).txt', repository::get_unused_filename($draftitemid, '/', 'test3 (1000MB).txt'));
 113         $this->assertEquals('test4 (1).txt', repository::get_unused_filename($draftitemid, '/', 'test4 (1).txt'));
 114     }
 115
 116     public function test_draftfile_exists() {
 117         global $USER;
 118
 119         $this->resetAfterTest(true);
 120
 121         $this->setAdminUser();
 122         $fs = get_file_storage();
 123
 124         $draftitemid = file_get_unused_draft_itemid();
 125         $context = context_user::instance($USER->id);
 126
 127         $dummy = array(
 128             'contextid' => $context->id,
 129             'component' => 'user',
 130             'filearea' => 'draft',
 131             'itemid' => $draftitemid,
 132             'filepath' => '/',
 133             'filename' => ''
 134         );
 135
 136         // Create some files.
 137         $existingfiles = array(
 138             'The Matrix.movie',
 139             'Astalavista.txt',
 140             'foobar',
 141         );
 142         foreach ($existingfiles as $filename) {
 143             $dummy['filename'] = $filename;
 144             $file = $fs->create_file_from_string($dummy, 'Content of ' . $filename);
 145             $this->assertInstanceOf('stored_file', $file);
 146         }
 147
 148         // Doing the text.
 149         foreach ($existingfiles as $filename) {
 150             $this->assertTrue(repository::draftfile_exists($draftitemid, '/', $filename));
 151         }
 152         foreach (array('Terminator.movie', 'Where is Wally?', 'barfoo') as $filename) {
 153             $this->assertFalse(repository::draftfile_exists($draftitemid, '/', $filename));
 154         }
 155     }
 156
 157     public function test_delete_selected_files() {
 158         global $USER;
 159
 160         $this->resetAfterTest(true);
 161
 162         $this->setAdminUser();
 163         $fs = get_file_storage();
 164
 165         $draftitemid = file_get_unused_draft_itemid();
 166         $context = context_user::instance($USER->id);
 167
 168         $dummy = [
 169             'contextid' => $context->id,
 170             'component' => 'user',
 171             'filearea' => 'draft',
 172             'itemid' => $draftitemid,
 173             'filepath' => '/',
 174             'filename' => ''
 175         ];
 176
 177         // Create some files.
 178         $existingfiles = [
 179             'The Matrix.movie',
 180             'Astalavista.txt',
 181             'foobar',
 182         ];
 183
 184         $selectedfiles = [
 185             'The Matrix.movie' => [],
 186             'Astalavista.txt' => []
 187         ];
 188         foreach ($existingfiles as $filename) {
 189             $dummy['filename'] = $filename;
 190             $file = $fs->create_file_from_string($dummy, 'Content of ' . $filename);
 191             if (array_key_exists($filename, $selectedfiles)) {
 192                 $selectedfiles[$filename] = (object)[
 193                     'filename' => $filename,
 194                     'filepath' => $file->get_filepath()
 195                 ];
 196             }
 197         }
 198
 199         // Get area files with default options.
 200         $areafiles = $fs->get_area_files($context->id, 'user', 'draft', $draftitemid);
 201         // Should be the 3 files we added plus the folder.
 202         $this->assertEquals(4, count($areafiles));
 203
 204         repository_delete_selected_files($context, 'user', 'draft', $draftitemid, $selectedfiles);
 205
 206         $areafiles = $fs->get_area_files($context->id, 'user', 'draft', $draftitemid);
 207         // Should be the 1 file left plus the folder.
 208         $this->assertEquals(2, count($areafiles));
 209     }
 210
 211     public function test_can_be_edited_by_user() {
 212         $this->resetAfterTest(true);
 213
 214         $syscontext = context_system::instance();
 215         $course = $this->getDataGenerator()->create_course();
 216         $coursecontext = context_course::instance($course->id);
 217         $roleid = create_role('A role', 'arole', 'A role', '');
 218         $user = $this->getDataGenerator()->create_user();
 219         $this->setUser($user);
 220
 221         // Instance on a site level.
 222         $this->getDataGenerator()->create_repository_type('flickr_public');
 223         $repoid = $this->getDataGenerator()->create_repository('flickr_public')->id;
 224         $systemrepo = repository::get_repository_by_id($repoid, $syscontext);
 225
 226         role_assign($roleid, $user->id, $syscontext->id);
 227         assign_capability('moodle/site:config', CAP_ALLOW, $roleid, $syscontext, true);
 228         assign_capability('repository/flickr_public:view', CAP_ALLOW, $roleid, $syscontext, true);
 229         accesslib_clear_all_caches_for_unit_testing();
 230         $this->assertTrue($systemrepo->can_be_edited_by_user());
 231
 232         assign_capability('repository/flickr_public:view', CAP_PROHIBIT, $roleid, $syscontext, true);
 233         assign_capability('moodle/site:config', CAP_PROHIBIT, $roleid, $syscontext, true);
 234         accesslib_clear_all_caches_for_unit_testing();
 235         $this->assertFalse($systemrepo->can_be_edited_by_user());
 236
 237         assign_capability('repository/flickr_public:view', CAP_ALLOW, $roleid, $syscontext, true);
 238         assign_capability('moodle/site:config', CAP_PROHIBIT, $roleid, $syscontext, true);
 239         accesslib_clear_all_caches_for_unit_testing();
 240         $this->assertFalse($systemrepo->can_be_edited_by_user());
 241
 242         role_unassign($roleid, $user->id, $syscontext->id);
 243         accesslib_clear_all_caches_for_unit_testing();
 244
 245         // Instance on a course level.
 246         $this->getDataGenerator()->enrol_user($user->id, $course->id, $roleid);
 247
 248         $params = array('contextid' => $coursecontext->id);
 249         $repoid = $this->getDataGenerator()->create_repository('flickr_public', $params)->id;
 250         $courserepo = repository::get_repository_by_id($repoid, $coursecontext);
 251
 252         assign_capability('moodle/course:update', CAP_ALLOW, $roleid, $coursecontext, true);
 253         assign_capability('repository/flickr_public:view', CAP_ALLOW, $roleid, $coursecontext, true);
 254         accesslib_clear_all_caches_for_unit_testing();
 255         $this->assertTrue($courserepo->can_be_edited_by_user());
 256
 257         assign_capability('repository/flickr_public:view', CAP_PROHIBIT, $roleid, $coursecontext, true);
 258         accesslib_clear_all_caches_for_unit_testing();
 259         $this->assertFalse($courserepo->can_be_edited_by_user());
 260
 261         assign_capability('moodle/course:update', CAP_ALLOW, $roleid, $coursecontext, true);
 262         assign_capability('repository/flickr_public:view', CAP_PROHIBIT, $roleid, $coursecontext, true);
 263         accesslib_clear_all_caches_for_unit_testing();
 264         $this->assertFalse($courserepo->can_be_edited_by_user());
 265
 266         role_unassign($roleid, $user->id, $coursecontext->id);
 267         accesslib_clear_all_caches_for_unit_testing();
 268
 269         // Instance on a user level.
 270         $otheruser = $this->getDataGenerator()->create_user();
 271         $otherusercontext = context_user::instance($otheruser->id);
 272         role_assign($roleid, $user->id, $syscontext->id);
 273         assign_capability('repository/flickr_public:view', CAP_ALLOW, $roleid, $syscontext, true);
 274         accesslib_clear_all_caches_for_unit_testing();
 275
 276         // Editing someone else's instance.
 277         $record = array('contextid' => $otherusercontext->id);
 278         $repoid = $this->getDataGenerator()->create_repository('flickr_public', $record)->id;
 279         $userrepo = repository::get_repository_by_id($repoid, $syscontext);
 280         $this->assertFalse($userrepo->can_be_edited_by_user());
 281
 282         // Editing my own instance.
 283         $usercontext = context_user::instance($user->id);
 284         $record = array('contextid' => $usercontext->id);
 285         $repoid = $this->getDataGenerator()->create_repository('flickr_public', $record)->id;
 286         $userrepo = repository::get_repository_by_id($repoid, $syscontext);
 287         $this->assertTrue($userrepo->can_be_edited_by_user());
 288
 289     }
 290
 291     public function test_check_capability() {
 292         $this->resetAfterTest(true);
 293
 294         $syscontext = context_system::instance();
 295         $course1 = $this->getDataGenerator()->create_course();
 296         $course1context = context_course::instance($course1->id);
 297         $course2 = $this->getDataGenerator()->create_course();
 298         $course2context = context_course::instance($course2->id);
 299
 300         $forumdata = new stdClass();
 301         $forumdata->course = $course1->id;
 302         $forumc1 = $this->getDataGenerator()->create_module('forum', $forumdata);
 303         $forumc1context = context_module::instance($forumc1->cmid);
 304         $forumdata->course = $course2->id;
 305         $forumc2 = $this->getDataGenerator()->create_module('forum', $forumdata);
 306         $forumc2context = context_module::instance($forumc2->cmid);
 307
 308         $blockdata = new stdClass();
 309         $blockdata->parentcontextid = $course1context->id;
 310         $blockc1 = $this->getDataGenerator()->create_block('online_users', $blockdata);
 311         $blockc1context = context_block::instance($blockc1->id);
 312         $blockdata->parentcontextid = $course2context->id;
 313         $blockc2 = $this->getDataGenerator()->create_block('online_users', $blockdata);
 314         $blockc2context = context_block::instance($blockc2->id);
 315
 316         $user1 = $this->getDataGenerator()->create_user();
 317         $user1context = context_user::instance($user1->id);
 318         $user2 = $this->getDataGenerator()->create_user();
 319         $user2context = context_user::instance($user2->id);
 320
 321         // New role prohibiting Flickr Public access.
 322         $roleid = create_role('No Flickr Public', 'noflickrpublic', 'No Flickr Public', '');
 323         assign_capability('repository/flickr_public:view', CAP_PROHIBIT, $roleid, $syscontext, true);
 324
 325         // Disallow system access to Flickr Public to user 2.
 326         role_assign($roleid, $user2->id, $syscontext->id);
 327         accesslib_clear_all_caches_for_unit_testing();
 328
 329         // Enable repositories.
 330         $this->getDataGenerator()->create_repository_type('flickr_public');
 331         $this->getDataGenerator()->create_repository_type('dropbox');
 332
 333         // Instance on a site level.
 334         $repoid = $this->getDataGenerator()->create_repository('flickr_public')->id;
 335         $systemrepo = repository::get_repository_by_id($repoid, $syscontext);
 336
 337         // Check that everyone with right capability can view a site-wide repository.
 338         $this->setUser($user1);
 339         $this->assertTrue($systemrepo->check_capability());
 340
 341         // Without the capability, we cannot view a site-wide repository.
 342         $this->setUser($user2);
 343         $caughtexception = false;
 344         try {
 345             $systemrepo->check_capability();
 346         } catch (repository_exception $e) {
 347             $caughtexception = true;
 348         }
 349         $this->assertTrue($caughtexception);
 350
 351         // Instance on a course level.
 352         $record = new stdClass();
 353         $record->contextid = $course1context->id;
 354         $courserepoid = $this->getDataGenerator()->create_repository('flickr_public', $record)->id;
 355
 356         // Within the course, I can view the repository.
 357         $courserepo = repository::get_repository_by_id($courserepoid, $course1context);
 358         $this->setUser($user1);
 359         $this->assertTrue($courserepo->check_capability());
 360         // But not without the capability.
 361         $this->setUser($user2);
 362         $caughtexception = false;
 363         try {
 364             $courserepo->check_capability();
 365         } catch (repository_exception $e) {
 366             $caughtexception = true;
 367         }
 368         $this->assertTrue($caughtexception);
 369
 370         // From another course I cannot, with or without the capability.
 371         $courserepo = repository::get_repository_by_id($courserepoid, $course2context);
 372         $this->setUser($user1);
 373         $caughtexception = false;
 374         try {
 375             $courserepo->check_capability();
 376         } catch (repository_exception $e) {
 377             $caughtexception = true;
 378         }
 379         $this->assertTrue($caughtexception);
 380         $this->setUser($user2);
 381         $caughtexception = false;
 382         try {
 383             $courserepo->check_capability();
 384         } catch (repository_exception $e) {
 385             $caughtexception = true;
 386         }
 387         $this->assertTrue($caughtexception);
 388
 389         // From a module within the course, I can view the repository.
 390         $courserepo = repository::get_repository_by_id($courserepoid, $forumc1context);
 391         $this->setUser($user1);
 392         $this->assertTrue($courserepo->check_capability());
 393         // But not without the capability.
 394         $this->setUser($user2);
 395         $caughtexception = false;
 396         try {
 397             $courserepo->check_capability();
 398         } catch (repository_exception $e) {
 399             $caughtexception = true;
 400         }
 401         $this->assertTrue($caughtexception);
 402
 403         // From a module in the wrong course, I cannot view the repository.
 404         $courserepo = repository::get_repository_by_id($courserepoid, $forumc2context);
 405         $this->setUser($user1);
 406         $caughtexception = false;
 407         try {
 408             $courserepo->check_capability();
 409         } catch (repository_exception $e) {
 410             $caughtexception = true;
 411         }
 412         $this->assertTrue($caughtexception);
 413
 414         // From a block within the course, I can view the repository.
 415         $courserepo = repository::get_repository_by_id($courserepoid, $blockc1context);
 416         $this->setUser($user1);
 417         $this->assertTrue($courserepo->check_capability());
 418         // But not without the capability.
 419         $this->setUser($user2);
 420         $caughtexception = false;
 421         try {
 422             $courserepo->check_capability();
 423         } catch (repository_exception $e) {
 424             $caughtexception = true;
 425         }
 426         $this->assertTrue($caughtexception);
 427
 428         // From a block in the wrong course, I cannot view the repository.
 429         $courserepo = repository::get_repository_by_id($courserepoid, $blockc2context);
 430         $this->setUser($user1);
 431         $caughtexception = false;
 432         try {
 433             $courserepo->check_capability();
 434         } catch (repository_exception $e) {
 435             $caughtexception = true;
 436         }
 437         $this->assertTrue($caughtexception);
 438
 439         // Instance on a user level.
 440         // Instance on a course level.
 441         $record = new stdClass();
 442         $record->contextid = $user1context->id;
 443         $user1repoid = $this->getDataGenerator()->create_repository('flickr_public', $record)->id;
 444         $record->contextid = $user2context->id;
 445         $user2repoid = $this->getDataGenerator()->create_repository('flickr_public', $record)->id;
 446
 447         // Check that a user can see its own repository.
 448         $userrepo = repository::get_repository_by_id($user1repoid, $syscontext);
 449         $this->setUser($user1);
 450         $this->assertTrue($userrepo->check_capability());
 451         // But not without the capability.
 452         $userrepo = repository::get_repository_by_id($user2repoid, $syscontext);
 453         $this->setUser($user2);
 454         $caughtexception = false;
 455         try {
 456             $userrepo->check_capability();
 457         } catch (repository_exception $e) {
 458             $caughtexception = true;
 459         }
 460         $this->assertTrue($caughtexception);
 461
 462         // Check that a user cannot see someone's repository.
 463         $userrepo = repository::get_repository_by_id($user2repoid, $syscontext);
 464         $this->setUser($user1);
 465         $caughtexception = false;
 466         try {
 467             $userrepo->check_capability();
 468         } catch (repository_exception $e) {
 469             $caughtexception = true;
 470         }
 471         $this->assertTrue($caughtexception);
 472         // Make sure the repo from user 2 was accessible.
 473         role_unassign($roleid, $user2->id, $syscontext->id);
 474         accesslib_clear_all_caches_for_unit_testing();
 475         $this->setUser($user2);
 476         $this->assertTrue($userrepo->check_capability());
 477         role_assign($roleid, $user2->id, $syscontext->id);
 478         accesslib_clear_all_caches_for_unit_testing();
 479
 480         // Check that a user can view SOME repositories when logged in as someone else.
 481         $params = new stdClass();
 482         $params->name = 'Dropbox';
 483         $params->dropbox_key = 'key';
 484         $params->dropbox_secret = 'secret';
 485         $privaterepoid = $this->getDataGenerator()->create_repository('dropbox')->id;
 486         $notprivaterepoid = $this->getDataGenerator()->create_repository('upload')->id;
 487
 488         $privaterepo = repository::get_repository_by_id($privaterepoid, $syscontext);
 489         $notprivaterepo = repository::get_repository_by_id($notprivaterepoid, $syscontext);
 490         $userrepo = repository::get_repository_by_id($user1repoid, $syscontext);
 491
 492         $this->setAdminUser();
 493         \core\session\manager::loginas($user1->id, $syscontext);
 494
 495         // Logged in as, I cannot view a user instance.
 496         $caughtexception = false;
 497         try {
 498             $userrepo->check_capability();
 499         } catch (repository_exception $e) {
 500             $caughtexception = true;
 501         }
 502         $this->assertTrue($caughtexception);
 503
 504         // Logged in as, I cannot view a private instance.
 505         $caughtexception = false;
 506         try {
 507             $privaterepo->check_capability();
 508         } catch (repository_exception $e) {
 509             $caughtexception = true;
 510         }
 511         $this->assertTrue($caughtexception);
 512
 513         // Logged in as, I can view a non-private instance.
 514         $this->assertTrue($notprivaterepo->check_capability());
 515     }
 516
 517     function test_delete_all_for_context() {
 518         global $DB;
 519         $this->resetAfterTest(true);
 520
 521         $this->setAdminUser();
 522         $course = $this->getDataGenerator()->create_course();
 523         $user = $this->getDataGenerator()->create_user();
 524         $this->getDataGenerator()->create_repository_type('flickr_public');
 525         $this->getDataGenerator()->create_repository_type('filesystem');
 526         $coursecontext = context_course::instance($course->id);
 527         $usercontext = context_user::instance($user->id);
 528
 529         // Creating course instances.
 530         $repo = $this->getDataGenerator()->create_repository('flickr_public', array('contextid' => $coursecontext->id));
 531         $courserepo1 = repository::get_repository_by_id($repo->id, $coursecontext);
 532         $this->assertEquals(1, $DB->count_records('repository_instances', array('contextid' => $coursecontext->id)));
 533
 534         $repo = $this->getDataGenerator()->create_repository('filesystem', array('contextid' => $coursecontext->id));
 535         $courserepo2 = repository::get_repository_by_id($repo->id, $coursecontext);
 536         $this->assertEquals(2, $DB->count_records('repository_instances', array('contextid' => $coursecontext->id)));
 537
 538         // Creating user instances.
 539         $repo = $this->getDataGenerator()->create_repository('flickr_public', array('contextid' => $usercontext->id));
 540         $userrepo1 = repository::get_repository_by_id($repo->id, $usercontext);
 541         $this->assertEquals(1, $DB->count_records('repository_instances', array('contextid' => $usercontext->id)));
 542
 543         $repo = $this->getDataGenerator()->create_repository('filesystem', array('contextid' => $usercontext->id));
 544         $userrepo2 = repository::get_repository_by_id($repo->id, $usercontext);
 545         $this->assertEquals(2, $DB->count_records('repository_instances', array('contextid' => $usercontext->id)));
 546
 547         // Simulation of course deletion.
 548         repository::delete_all_for_context($coursecontext->id);
 549         $this->assertEquals(0, $DB->count_records('repository_instances', array('contextid' => $coursecontext->id)));
 550         $this->assertEquals(0, $DB->count_records('repository_instances', array('id' => $courserepo1->id)));
 551         $this->assertEquals(0, $DB->count_records('repository_instances', array('id' => $courserepo2->id)));
 552         $this->assertEquals(0, $DB->count_records('repository_instance_config', array('instanceid' => $courserepo1->id)));
 553         $this->assertEquals(0, $DB->count_records('repository_instance_config', array('instanceid' => $courserepo2->id)));
 554
 555         // Simulation of user deletion.
 556         repository::delete_all_for_context($usercontext->id);
 557         $this->assertEquals(0, $DB->count_records('repository_instances', array('contextid' => $usercontext->id)));
 558         $this->assertEquals(0, $DB->count_records('repository_instances', array('id' => $userrepo1->id)));
 559         $this->assertEquals(0, $DB->count_records('repository_instances', array('id' => $userrepo2->id)));
 560         $this->assertEquals(0, $DB->count_records('repository_instance_config', array('instanceid' => $userrepo1->id)));
 561         $this->assertEquals(0, $DB->count_records('repository_instance_config', array('instanceid' => $userrepo2->id)));
 562
 563         // Checking deletion upon course context deletion.
 564         $course = $this->getDataGenerator()->create_course();
 565         $coursecontext = context_course::instance($course->id);
 566         $repo = $this->getDataGenerator()->create_repository('flickr_public', array('contextid' => $coursecontext->id));
 567         $courserepo = repository::get_repository_by_id($repo->id, $coursecontext);
 568         $this->assertEquals(1, $DB->count_records('repository_instances', array('contextid' => $coursecontext->id)));
 569         $coursecontext->delete();
 570         $this->assertEquals(0, $DB->count_records('repository_instances', array('contextid' => $coursecontext->id)));
 571
 572         // Checking deletion upon user context deletion.
 573         $user = $this->getDataGenerator()->create_user();
 574         $usercontext = context_user::instance($user->id);
 575         $repo = $this->getDataGenerator()->create_repository('flickr_public', array('contextid' => $usercontext->id));
 576         $userrepo = repository::get_repository_by_id($repo->id, $usercontext);
 577         $this->assertEquals(1, $DB->count_records('repository_instances', array('contextid' => $usercontext->id)));
 578         $usercontext->delete();
 579         $this->assertEquals(0, $DB->count_records('repository_instances', array('contextid' => $usercontext->id)));
 580
 581         // Checking deletion upon course deletion.
 582         $course = $this->getDataGenerator()->create_course();
 583         $coursecontext = context_course::instance($course->id);
 584         $repo = $this->getDataGenerator()->create_repository('flickr_public', array('contextid' => $coursecontext->id));
 585         $courserepo = repository::get_repository_by_id($repo->id, $coursecontext);
 586         $this->assertEquals(1, $DB->count_records('repository_instances', array('contextid' => $coursecontext->id)));
 587         delete_course($course, false);
 588         $this->assertEquals(0, $DB->count_records('repository_instances', array('contextid' => $coursecontext->id)));
 589
 590         // Checking deletion upon user deletion.
 591         $user = $this->getDataGenerator()->create_user();
 592         $usercontext = context_user::instance($user->id);
 593         $repo = $this->getDataGenerator()->create_repository('flickr_public', array('contextid' => $usercontext->id));
 594         $userrepo = repository::get_repository_by_id($repo->id, $usercontext);
 595         $this->assertEquals(1, $DB->count_records('repository_instances', array('contextid' => $usercontext->id)));
 596         delete_user($user);
 597         $this->assertEquals(0, $DB->count_records('repository_instances', array('contextid' => $usercontext->id)));
 598     }
 599 }