lib/tests/navigationlib_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  * Unit tests for lib/navigationlib.php
  19  *
  20  * @package   core
  21  * @category  phpunit
  22  * @copyright 2009 Sam Hemelryk
  23  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later (5)
  24  */
  25
  26 defined('MOODLE_INTERNAL') || die();
  27
  28 global $CFG;
  29 require_once($CFG->libdir . '/navigationlib.php');
  30
  31
  32 class core_navigationlib_testcase extends advanced_testcase {
  33     /**
  34      * @var navigation_node
  35      */
  36     public $node;
  37
  38     protected function setup_node() {
  39         global $PAGE, $SITE;
  40
  41         $PAGE->set_url('/');
  42         $PAGE->set_course($SITE);
  43
  44         $activeurl = $PAGE->url;
  45         $inactiveurl = new moodle_url('http://www.moodle.com/');
  46
  47         navigation_node::override_active_url($PAGE->url);
  48
  49         $this->node = new navigation_node('Test Node');
  50         $this->node->type = navigation_node::TYPE_SYSTEM;
  51         // We add the first child without key. This way we make sure all keys search by comparison is performed using ===.
  52         $this->node->add('first child without key', null, navigation_node::TYPE_CUSTOM);
  53         $demo1 = $this->node->add('demo1', $inactiveurl, navigation_node::TYPE_COURSE, null, 'demo1', new pix_icon('i/course', ''));
  54         $demo2 = $this->node->add('demo2', $inactiveurl, navigation_node::TYPE_COURSE, null, 'demo2', new pix_icon('i/course', ''));
  55         $demo3 = $this->node->add('demo3', $inactiveurl, navigation_node::TYPE_CATEGORY, null, 'demo3', new pix_icon('i/course', ''));
  56         $demo4 = $demo3->add('demo4', $inactiveurl, navigation_node::TYPE_COURSE,  null, 'demo4', new pix_icon('i/course', ''));
  57         $demo5 = $demo3->add('demo5', $activeurl, navigation_node::TYPE_COURSE, null, 'demo5', new pix_icon('i/course', ''));
  58         $demo5->add('activity1', null, navigation_node::TYPE_ACTIVITY, null, 'activity1')->make_active();
  59         $hiddendemo1 = $this->node->add('hiddendemo1', $inactiveurl, navigation_node::TYPE_CATEGORY, null, 'hiddendemo1', new pix_icon('i/course', ''));
  60         $hiddendemo1->hidden = true;
  61         $hiddendemo1->add('hiddendemo2', $inactiveurl, navigation_node::TYPE_COURSE, null, 'hiddendemo2', new pix_icon('i/course', ''))->helpbutton = 'Here is a help button';
  62         $hiddendemo1->add('hiddendemo3', $inactiveurl, navigation_node::TYPE_COURSE, null, 'hiddendemo3', new pix_icon('i/course', ''))->display = false;
  63     }
  64
  65     public function test_node__construct() {
  66         $this->setup_node();
  67
  68         $fakeproperties = array(
  69             'text' => 'text',
  70             'shorttext' => 'A very silly extra long short text string, more than 25 characters',
  71             'key' => 'key',
  72             'type' => 'navigation_node::TYPE_COURSE',
  73             'action' => new moodle_url('http://www.moodle.org/'));
  74
  75         $node = new navigation_node($fakeproperties);
  76         $this->assertSame($fakeproperties['text'], $node->text);
  77         $this->assertTrue(strpos($fakeproperties['shorttext'], substr($node->shorttext, 0, -3)) === 0);
  78         $this->assertSame($fakeproperties['key'], $node->key);
  79         $this->assertSame($fakeproperties['type'], $node->type);
  80         $this->assertSame($fakeproperties['action'], $node->action);
  81     }
  82
  83     public function test_node_add() {
  84         $this->setup_node();
  85
  86         // Add a node with all args set.
  87         $node1 = $this->node->add('test_add_1', 'http://www.moodle.org/', navigation_node::TYPE_COURSE, 'testadd1', 'key', new pix_icon('i/course', ''));
  88         // Add a node with the minimum args required.
  89         $node2 = $this->node->add('test_add_2', null, navigation_node::TYPE_CUSTOM, 'testadd2');
  90         $node3 = $this->node->add(str_repeat('moodle ', 15), str_repeat('moodle', 15));
  91
  92         $this->assertInstanceOf('navigation_node', $node1);
  93         $this->assertInstanceOf('navigation_node', $node2);
  94         $this->assertInstanceOf('navigation_node', $node3);
  95
  96         $ref = $this->node->get('key');
  97         $this->assertSame($node1, $ref);
  98
  99         $ref = $this->node->get($node2->key);
 100         $this->assertSame($node2, $ref);
 101
 102         $ref = $this->node->get($node2->key, $node2->type);
 103         $this->assertSame($node2, $ref);
 104
 105         $ref = $this->node->get($node3->key, $node3->type);
 106         $this->assertSame($node3, $ref);
 107     }
 108
 109     public function test_node_add_before() {
 110         $this->setup_node();
 111
 112         // Create 3 nodes.
 113         $node1 = navigation_node::create('test_add_1', null, navigation_node::TYPE_CUSTOM,
 114             'test 1', 'testadd1');
 115         $node2 = navigation_node::create('test_add_2', null, navigation_node::TYPE_CUSTOM,
 116             'test 2', 'testadd2');
 117         $node3 = navigation_node::create('test_add_3', null, navigation_node::TYPE_CUSTOM,
 118             'test 3', 'testadd3');
 119         // Add node 2, then node 1 before 2, then node 3 at end.
 120         $this->node->add_node($node2);
 121         $this->node->add_node($node1, 'testadd2');
 122         $this->node->add_node($node3);
 123         // Check the last 3 nodes are in 1, 2, 3 order and have those indexes.
 124         foreach ($this->node->children as $child) {
 125             $keys[] = $child->key;
 126         }
 127         $this->assertSame('testadd1', $keys[count($keys)-3]);
 128         $this->assertSame('testadd2', $keys[count($keys)-2]);
 129         $this->assertSame('testadd3', $keys[count($keys)-1]);
 130     }
 131
 132     public function test_node_add_class() {
 133         $this->setup_node();
 134
 135         $node = $this->node->get('demo1');
 136         $this->assertInstanceOf('navigation_node', $node);
 137         if ($node !== false) {
 138             $node->add_class('myclass');
 139             $classes = $node->classes;
 140             $this->assertContains('myclass', $classes);
 141         }
 142     }
 143
 144     public function test_node_check_if_active() {
 145         $this->setup_node();
 146
 147         // First test the string urls
 148         // Demo1 -> action is http://www.moodle.org/, thus should be true.
 149         $demo5 = $this->node->find('demo5', navigation_node::TYPE_COURSE);
 150         if ($this->assertInstanceOf('navigation_node', $demo5)) {
 151             $this->assertTrue($demo5->check_if_active());
 152         }
 153
 154         // Demo2 -> action is http://www.moodle.com/, thus should be false.
 155         $demo2 = $this->node->get('demo2');
 156         if ($this->assertInstanceOf('navigation_node', $demo2)) {
 157             $this->assertFalse($demo2->check_if_active());
 158         }
 159     }
 160
 161     public function test_node_contains_active_node() {
 162         $this->setup_node();
 163
 164         // Demo5, and activity1 were set to active during setup.
 165         // Should be true as it contains all nodes.
 166         $this->assertTrue($this->node->contains_active_node());
 167         // Should be true as demo5 is a child of demo3.
 168         $this->assertTrue($this->node->get('demo3')->contains_active_node());
 169         // Obviously duff.
 170         $this->assertFalse($this->node->get('demo1')->contains_active_node());
 171         // Should be true as demo5 contains activity1.
 172         $this->assertTrue($this->node->get('demo3')->get('demo5')->contains_active_node());
 173         // Should be true activity1 is the active node.
 174         $this->assertTrue($this->node->get('demo3')->get('demo5')->get('activity1')->contains_active_node());
 175         // Obviously duff.
 176         $this->assertFalse($this->node->get('demo3')->get('demo4')->contains_active_node());
 177     }
 178
 179     public function test_node_find_active_node() {
 180         $this->setup_node();
 181
 182         $activenode1 = $this->node->find_active_node();
 183         $activenode2 = $this->node->get('demo1')->find_active_node();
 184
 185         if ($this->assertInstanceOf('navigation_node', $activenode1)) {
 186             $ref = $this->node->get('demo3')->get('demo5')->get('activity1');
 187             $this->assertSame($activenode1, $ref);
 188         }
 189
 190         $this->assertNotInstanceOf('navigation_node', $activenode2);
 191     }
 192
 193     public function test_node_find() {
 194         $this->setup_node();
 195
 196         $node1 = $this->node->find('demo1', navigation_node::TYPE_COURSE);
 197         $node2 = $this->node->find('demo5', navigation_node::TYPE_COURSE);
 198         $node3 = $this->node->find('demo5', navigation_node::TYPE_CATEGORY);
 199         $node4 = $this->node->find('demo0', navigation_node::TYPE_COURSE);
 200         $this->assertInstanceOf('navigation_node', $node1);
 201         $this->assertInstanceOf('navigation_node', $node2);
 202         $this->assertNotInstanceOf('navigation_node', $node3);
 203         $this->assertNotInstanceOf('navigation_node', $node4);
 204     }
 205
 206     public function test_node_find_expandable() {
 207         $this->setup_node();
 208
 209         $expandable = array();
 210         $this->node->find_expandable($expandable);
 211
 212         $this->assertCount(0, $expandable);
 213         if (count($expandable) === 4) {
 214             $name = $expandable[0]['key'];
 215             $name .= $expandable[1]['key'];
 216             $name .= $expandable[2]['key'];
 217             $name .= $expandable[3]['key'];
 218             $this->assertSame('demo1demo2demo4hiddendemo2', $name);
 219         }
 220     }
 221
 222     public function test_node_get() {
 223         $this->setup_node();
 224
 225         $node1 = $this->node->get('demo1'); // Exists.
 226         $node2 = $this->node->get('demo4'); // Doesn't exist for this node.
 227         $node3 = $this->node->get('demo0'); // Doesn't exist at all.
 228         $node4 = $this->node->get(false);   // Sometimes occurs in nature code.
 229         $this->assertInstanceOf('navigation_node', $node1);
 230         $this->assertFalse($node2);
 231         $this->assertFalse($node3);
 232         $this->assertFalse($node4);
 233     }
 234
 235     public function test_node_get_css_type() {
 236         $this->setup_node();
 237
 238         $csstype1 = $this->node->get('demo3')->get_css_type();
 239         $csstype2 = $this->node->get('demo3')->get('demo5')->get_css_type();
 240         $this->node->get('demo3')->get('demo5')->type = 1000;
 241         $csstype3 = $this->node->get('demo3')->get('demo5')->get_css_type();
 242         $this->assertSame('type_category', $csstype1);
 243         $this->assertSame('type_course', $csstype2);
 244         $this->assertSame('type_unknown', $csstype3);
 245     }
 246
 247     public function test_node_make_active() {
 248         global $CFG;
 249         $this->setup_node();
 250
 251         $node1 = $this->node->add('active node 1', null, navigation_node::TYPE_CUSTOM, null, 'anode1');
 252         $node2 = $this->node->add('active node 2', new moodle_url($CFG->wwwroot), navigation_node::TYPE_COURSE, null, 'anode2');
 253         $node1->make_active();
 254         $this->node->get('anode2')->make_active();
 255         $this->assertTrue($node1->isactive);
 256         $this->assertTrue($this->node->get('anode2')->isactive);
 257     }
 258
 259     public function test_node_remove() {
 260         $this->setup_node();
 261
 262         $remove1 = $this->node->add('child to remove 1', null, navigation_node::TYPE_CUSTOM, null, 'remove1');
 263         $remove2 = $this->node->add('child to remove 2', null, navigation_node::TYPE_CUSTOM, null, 'remove2');
 264         $remove3 = $remove2->add('child to remove 3', null, navigation_node::TYPE_CUSTOM, null, 'remove3');
 265
 266         $this->assertInstanceOf('navigation_node', $remove1);
 267         $this->assertInstanceOf('navigation_node', $remove2);
 268         $this->assertInstanceOf('navigation_node', $remove3);
 269
 270         $this->assertInstanceOf('navigation_node', $this->node->get('remove1'));
 271         $this->assertInstanceOf('navigation_node', $this->node->get('remove2'));
 272         $this->assertInstanceOf('navigation_node', $remove2->get('remove3'));
 273
 274         // Remove element and make sure this is no longer a child.
 275         $this->assertTrue($remove1->remove());
 276         $this->assertFalse($this->node->get('remove1'));
 277         $this->assertFalse(in_array('remove1', $this->node->get_children_key_list(), true));
 278
 279         // Make sure that we can insert element after removal.
 280         $insertelement = navigation_node::create('extra element 4', null, navigation_node::TYPE_CUSTOM, null, 'element4');
 281         $this->node->add_node($insertelement, 'remove2');
 282         $this->assertNotEmpty($this->node->get('element4'));
 283
 284         // Remove more elements.
 285         $this->assertTrue($this->node->get('remove2')->remove());
 286         $this->assertFalse($this->node->get('remove2'));
 287
 288         // Make sure that we can add element after removal.
 289         $this->node->add('extra element 5', null, navigation_node::TYPE_CUSTOM, null, 'element5');
 290         $this->assertNotEmpty($this->node->get('element5'));
 291
 292         $this->assertTrue($remove2->get('remove3')->remove());
 293
 294         $this->assertFalse($this->node->get('remove1'));
 295         $this->assertFalse($this->node->get('remove2'));
 296     }
 297
 298     public function test_node_remove_class() {
 299         $this->setup_node();
 300
 301         $this->node->add_class('testclass');
 302         $this->assertTrue($this->node->remove_class('testclass'));
 303         $this->assertNotContains('testclass', $this->node->classes);
 304     }
 305
 306     public function test_module_extends_navigation() {
 307         $node = new exposed_global_navigation();
 308         // Create an initial tree structure to work with.
 309         $cat1 = $node->add('category 1', null, navigation_node::TYPE_CATEGORY, null, 'cat1');
 310         $cat2 = $node->add('category 2', null, navigation_node::TYPE_CATEGORY, null, 'cat2');
 311         $cat3 = $node->add('category 3', null, navigation_node::TYPE_CATEGORY, null, 'cat3');
 312         $sub1 = $cat2->add('sub category 1', null, navigation_node::TYPE_CATEGORY, null, 'sub1');
 313         $sub2 = $cat2->add('sub category 2', null, navigation_node::TYPE_CATEGORY, null, 'sub2');
 314         $sub3 = $cat2->add('sub category 3', null, navigation_node::TYPE_CATEGORY, null, 'sub3');
 315         $course1 = $sub2->add('course 1', null, navigation_node::TYPE_COURSE, null, 'course1');
 316         $course2 = $sub2->add('course 2', null, navigation_node::TYPE_COURSE, null, 'course2');
 317         $course3 = $sub2->add('course 3', null, navigation_node::TYPE_COURSE, null, 'course3');
 318         $section1 = $course2->add('section 1', null, navigation_node::TYPE_SECTION, null, 'sec1');
 319         $section2 = $course2->add('section 2', null, navigation_node::TYPE_SECTION, null, 'sec2');
 320         $section3 = $course2->add('section 3', null, navigation_node::TYPE_SECTION, null, 'sec3');
 321         $act1 = $section2->add('activity 1', null, navigation_node::TYPE_ACTIVITY, null, 'act1');
 322         $act2 = $section2->add('activity 2', null, navigation_node::TYPE_ACTIVITY, null, 'act2');
 323         $act3 = $section2->add('activity 3', null, navigation_node::TYPE_ACTIVITY, null, 'act3');
 324         $res1 = $section2->add('resource 1', null, navigation_node::TYPE_RESOURCE, null, 'res1');
 325         $res2 = $section2->add('resource 2', null, navigation_node::TYPE_RESOURCE, null, 'res2');
 326         $res3 = $section2->add('resource 3', null, navigation_node::TYPE_RESOURCE, null, 'res3');
 327
 328         $this->assertTrue($node->exposed_module_extends_navigation('data'));
 329         $this->assertFalse($node->exposed_module_extends_navigation('test1'));
 330     }
 331
 332     public function test_navbar_prepend_and_add() {
 333         global $PAGE;
 334         // Unfortunate hack needed because people use global $PAGE around the place.
 335         $PAGE->set_url('/');
 336
 337         // We need to reset after this test because we using the generator.
 338         $this->resetAfterTest();
 339
 340         $generator = self::getDataGenerator();
 341         $cat1 = $generator->create_category();
 342         $cat2 = $generator->create_category(array('parent' => $cat1->id));
 343         $course = $generator->create_course(array('category' => $cat2->id));
 344
 345         $page = new moodle_page();
 346         $page->set_course($course);
 347         $page->set_url(new moodle_url('/course/view.php', array('id' => $course->id)));
 348         $page->navbar->prepend('test 1');
 349         $page->navbar->prepend('test 2');
 350         $page->navbar->add('test 3');
 351         $page->navbar->add('test 4');
 352
 353         $items = $page->navbar->get_items();
 354         foreach ($items as $item) {
 355             $this->assertInstanceOf('navigation_node', $item);
 356         }
 357
 358         $i = 0;
 359         $this->assertSame('test 1', $items[$i++]->text);
 360         $this->assertSame('test 2', $items[$i++]->text);
 361         $this->assertSame('home', $items[$i++]->key);
 362         $this->assertSame('courses', $items[$i++]->key);
 363         $this->assertSame($cat1->id, $items[$i++]->key);
 364         $this->assertSame($cat2->id, $items[$i++]->key);
 365         $this->assertSame($course->id, $items[$i++]->key);
 366         $this->assertSame('test 3', $items[$i++]->text);
 367         $this->assertSame('test 4', $items[$i++]->text);
 368
 369         return $page;
 370     }
 371
 372     /**
 373      * @depends test_navbar_prepend_and_add
 374      * @param $node
 375      */
 376     public function test_navbar_has_items(moodle_page $page) {
 377         $this->resetAfterTest();
 378
 379         $this->assertTrue($page->navbar->has_items());
 380     }
 381
 382     public function test_cache__get() {
 383         $cache = new navigation_cache('unittest_nav');
 384         $cache->anysetvariable = true;
 385
 386         $this->assertTrue($cache->anysetvariable);
 387         $this->assertEquals($cache->notasetvariable, null);
 388     }
 389
 390     public function test_cache__set() {
 391         $cache = new navigation_cache('unittest_nav');
 392         $cache->anysetvariable = true;
 393
 394         $cache->myname = 'Sam Hemelryk';
 395         $this->assertTrue($cache->cached('myname'));
 396         $this->assertSame('Sam Hemelryk', $cache->myname);
 397     }
 398
 399     public function test_cache_cached() {
 400         $cache = new navigation_cache('unittest_nav');
 401         $cache->anysetvariable = true;
 402
 403         $this->assertTrue($cache->cached('anysetvariable'));
 404         $this->assertFalse($cache->cached('notasetvariable'));
 405     }
 406
 407     public function test_cache_clear() {
 408         $cache = new navigation_cache('unittest_nav');
 409         $cache->anysetvariable = true;
 410
 411         $cache = clone($cache);
 412         $this->assertTrue($cache->cached('anysetvariable'));
 413         $cache->clear();
 414         $this->assertFalse($cache->cached('anysetvariable'));
 415     }
 416
 417     public function test_cache_set() {
 418         $cache = new navigation_cache('unittest_nav');
 419         $cache->anysetvariable = true;
 420
 421         $cache->set('software', 'Moodle');
 422         $this->assertTrue($cache->cached('software'));
 423         $this->assertEquals($cache->software, 'Moodle');
 424     }
 425
 426     public function test_setting___construct() {
 427         global $PAGE, $SITE;
 428
 429         $this->resetAfterTest(false);
 430
 431         $PAGE->set_url('/');
 432         $PAGE->set_course($SITE);
 433
 434         $node = new exposed_settings_navigation();
 435
 436         return $node;
 437     }
 438
 439     /**
 440      * @depends test_setting___construct
 441      * @param mixed $node
 442      * @return mixed
 443      */
 444     public function test_setting__initialise($node) {
 445         $this->resetAfterTest(false);
 446
 447         $node->initialise();
 448         $this->assertEquals($node->id, 'settingsnav');
 449
 450         return $node;
 451     }
 452
 453     /**
 454      * @depends test_setting__initialise
 455      * @param mixed $node
 456      * @return mixed
 457      */
 458     public function test_setting_in_alternative_role($node) {
 459         $this->resetAfterTest();
 460
 461         $this->assertFalse($node->exposed_in_alternative_role());
 462     }
 463 }
 464
 465
 466 /**
 467  * This is a dummy object that allows us to call protected methods within the
 468  * global navigation class by prefixing the methods with `exposed_`
 469  */
 470 class exposed_global_navigation extends global_navigation {
 471     protected $exposedkey = 'exposed_';
 472     public function __construct(moodle_page $page=null) {
 473         global $PAGE;
 474         if ($page === null) {
 475             $page = $PAGE;
 476         }
 477         parent::__construct($page);
 478         $this->cache = new navigation_cache('unittest_nav');
 479     }
 480     public function __call($method, $arguments) {
 481         if (strpos($method, $this->exposedkey) !== false) {
 482             $method = substr($method, strlen($this->exposedkey));
 483         }
 484         if (method_exists($this, $method)) {
 485             return call_user_func_array(array($this, $method), $arguments);
 486         }
 487         throw new coding_exception('You have attempted to access a method that does not exist for the given object '.$method, DEBUG_DEVELOPER);
 488     }
 489     public function set_initialised() {
 490         $this->initialised = true;
 491     }
 492 }
 493
 494
 495 class mock_initialise_global_navigation extends global_navigation {
 496
 497     protected static $count = 1;
 498
 499     public function load_for_category() {
 500         $this->add('load_for_category', null, null, null, 'initcall'.self::$count);
 501         self::$count++;
 502         return 0;
 503     }
 504
 505     public function load_for_course() {
 506         $this->add('load_for_course', null, null, null, 'initcall'.self::$count);
 507         self::$count++;
 508         return 0;
 509     }
 510
 511     public function load_for_activity() {
 512         $this->add('load_for_activity', null, null, null, 'initcall'.self::$count);
 513         self::$count++;
 514         return 0;
 515     }
 516
 517     public function load_for_user($user=null, $forceforcontext=false) {
 518         $this->add('load_for_user', null, null, null, 'initcall'.self::$count);
 519         self::$count++;
 520         return 0;
 521     }
 522 }
 523
 524 /**
 525  * This is a dummy object that allows us to call protected methods within the
 526  * global navigation class by prefixing the methods with `exposed_`.
 527  */
 528 class exposed_navbar extends navbar {
 529     protected $exposedkey = 'exposed_';
 530     public function __construct(moodle_page $page) {
 531         parent::__construct($page);
 532         $this->cache = new navigation_cache('unittest_nav');
 533     }
 534     public function __call($method, $arguments) {
 535         if (strpos($method, $this->exposedkey) !== false) {
 536             $method = substr($method, strlen($this->exposedkey));
 537         }
 538         if (method_exists($this, $method)) {
 539             return call_user_func_array(array($this, $method), $arguments);
 540         }
 541         throw new coding_exception('You have attempted to access a method that does not exist for the given object '.$method, DEBUG_DEVELOPER);
 542     }
 543 }
 544
 545 class navigation_exposed_moodle_page extends moodle_page {
 546     public function set_navigation(navigation_node $node) {
 547         $this->_navigation = $node;
 548     }
 549 }
 550
 551 /**
 552  * This is a dummy object that allows us to call protected methods within the
 553  * global navigation class by prefixing the methods with `exposed_`.
 554  */
 555 class exposed_settings_navigation extends settings_navigation {
 556     protected $exposedkey = 'exposed_';
 557     public function __construct() {
 558         global $PAGE;
 559         parent::__construct($PAGE);
 560         $this->cache = new navigation_cache('unittest_nav');
 561     }
 562     public function __call($method, $arguments) {
 563         if (strpos($method, $this->exposedkey) !== false) {
 564             $method = substr($method, strlen($this->exposedkey));
 565         }
 566         if (method_exists($this, $method)) {
 567             return call_user_func_array(array($this, $method), $arguments);
 568         }
 569         throw new coding_exception('You have attempted to access a method that does not exist for the given object '.$method, DEBUG_DEVELOPER);
 570     }
 571 }