mod/lti/tests/externallib_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  * External tool module external functions tests
  19  *
  20  * @package    mod_lti
  21  * @category   external
  22  * @copyright  2015 Juan Leyva <juan@moodle.com>
  23  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  * @since      Moodle 3.0
  25  */
  26
  27 defined('MOODLE_INTERNAL') || die();
  28
  29 global $CFG;
  30
  31 require_once($CFG->dirroot . '/webservice/tests/helpers.php');
  32 require_once($CFG->dirroot . '/mod/lti/lib.php');
  33
  34 /**
  35  * External tool module external functions tests
  36  *
  37  * @package    mod_lti
  38  * @category   external
  39  * @copyright  2015 Juan Leyva <juan@moodle.com>
  40  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  41  * @since      Moodle 3.0
  42  */
  43 class mod_lti_external_testcase extends externallib_advanced_testcase {
  44
  45     /**
  46      * Set up for every test
  47      */
  48     public function setUp() {
  49         global $DB;
  50         $this->resetAfterTest();
  51         $this->setAdminUser();
  52
  53         // Setup test data.
  54         $this->course = $this->getDataGenerator()->create_course();
  55         $this->lti = $this->getDataGenerator()->create_module('lti',
  56             array('course' => $this->course->id, 'toolurl' => 'http://localhost/not/real/tool.php'));
  57         $this->context = context_module::instance($this->lti->cmid);
  58         $this->cm = get_coursemodule_from_instance('lti', $this->lti->id);
  59
  60         // Create users.
  61         $this->student = self::getDataGenerator()->create_user();
  62         $this->teacher = self::getDataGenerator()->create_user();
  63
  64         // Users enrolments.
  65         $this->studentrole = $DB->get_record('role', array('shortname' => 'student'));
  66         $this->teacherrole = $DB->get_record('role', array('shortname' => 'editingteacher'));
  67         $this->getDataGenerator()->enrol_user($this->student->id, $this->course->id, $this->studentrole->id, 'manual');
  68         $this->getDataGenerator()->enrol_user($this->teacher->id, $this->course->id, $this->teacherrole->id, 'manual');
  69     }
  70
  71     /**
  72      * Test view_lti
  73      */
  74     public function test_get_tool_launch_data() {
  75         global $USER, $SITE;
  76
  77         $result = mod_lti_external::get_tool_launch_data($this->lti->id);
  78         $result = external_api::clean_returnvalue(mod_lti_external::get_tool_launch_data_returns(), $result);
  79
  80         // Basic test, the function returns what it's expected.
  81         self::assertEquals($this->lti->toolurl, $result['endpoint']);
  82         self::assertCount(36, $result['parameters']);
  83
  84         // Check some parameters.
  85         $parameters = array();
  86         foreach ($result['parameters'] as $param) {
  87             $parameters[$param['name']] = $param['value'];
  88         }
  89         self::assertEquals($this->lti->resourcekey, $parameters['oauth_consumer_key']);
  90         self::assertEquals($this->course->fullname, $parameters['context_title']);
  91         self::assertEquals($this->course->shortname, $parameters['context_label']);
  92         self::assertEquals($USER->id, $parameters['user_id']);
  93         self::assertEquals($USER->firstname, $parameters['lis_person_name_given']);
  94         self::assertEquals($USER->lastname, $parameters['lis_person_name_family']);
  95         self::assertEquals(fullname($USER), $parameters['lis_person_name_full']);
  96         self::assertEquals($USER->username, $parameters['ext_user_username']);
  97         self::assertEquals("phpunit", $parameters['tool_consumer_instance_name']);
  98         self::assertEquals("PHPUnit test site", $parameters['tool_consumer_instance_description']);
  99
 100     }
 101
 102     /*
 103      * Test get ltis by courses
 104      */
 105     public function test_mod_lti_get_ltis_by_courses() {
 106         global $DB;
 107
 108         // Create additional course.
 109         $course2 = self::getDataGenerator()->create_course();
 110
 111         // Second lti.
 112         $record = new stdClass();
 113         $record->course = $course2->id;
 114         $lti2 = self::getDataGenerator()->create_module('lti', $record);
 115
 116         // Execute real Moodle enrolment as we'll call unenrol() method on the instance later.
 117         $enrol = enrol_get_plugin('manual');
 118         $enrolinstances = enrol_get_instances($course2->id, true);
 119         foreach ($enrolinstances as $courseenrolinstance) {
 120             if ($courseenrolinstance->enrol == "manual") {
 121                 $instance2 = $courseenrolinstance;
 122                 break;
 123             }
 124         }
 125         $enrol->enrol_user($instance2, $this->student->id, $this->studentrole->id);
 126
 127         self::setUser($this->student);
 128
 129         $returndescription = mod_lti_external::get_ltis_by_courses_returns();
 130
 131         // Create what we expect to be returned when querying the two courses.
 132         // First for the student user.
 133         $expectedfields = array('id', 'coursemodule', 'course', 'name', 'intro', 'introformat', 'introfiles', 'launchcontainer',
 134                                 'showtitlelaunch', 'showdescriptionlaunch', 'icon', 'secureicon');
 135
 136         // Add expected coursemodule and data.
 137         $lti1 = $this->lti;
 138         $lti1->coursemodule = $lti1->cmid;
 139         $lti1->introformat = 1;
 140         $lti1->section = 0;
 141         $lti1->visible = true;
 142         $lti1->groupmode = 0;
 143         $lti1->groupingid = 0;
 144         $lti1->introfiles = [];
 145
 146         $lti2->coursemodule = $lti2->cmid;
 147         $lti2->introformat = 1;
 148         $lti2->section = 0;
 149         $lti2->visible = true;
 150         $lti2->groupmode = 0;
 151         $lti2->groupingid = 0;
 152         $lti2->introfiles = [];
 153
 154         foreach ($expectedfields as $field) {
 155                 $expected1[$field] = $lti1->{$field};
 156                 $expected2[$field] = $lti2->{$field};
 157         }
 158
 159         $expectedltis = array($expected2, $expected1);
 160
 161         // Call the external function passing course ids.
 162         $result = mod_lti_external::get_ltis_by_courses(array($course2->id, $this->course->id));
 163         $result = external_api::clean_returnvalue($returndescription, $result);
 164
 165         $this->assertEquals($expectedltis, $result['ltis']);
 166         $this->assertCount(0, $result['warnings']);
 167
 168         // Call the external function without passing course id.
 169         $result = mod_lti_external::get_ltis_by_courses();
 170         $result = external_api::clean_returnvalue($returndescription, $result);
 171         $this->assertEquals($expectedltis, $result['ltis']);
 172         $this->assertCount(0, $result['warnings']);
 173
 174         // Unenrol user from second course and alter expected ltis.
 175         $enrol->unenrol_user($instance2, $this->student->id);
 176         array_shift($expectedltis);
 177
 178         // Call the external function without passing course id.
 179         $result = mod_lti_external::get_ltis_by_courses();
 180         $result = external_api::clean_returnvalue($returndescription, $result);
 181         $this->assertEquals($expectedltis, $result['ltis']);
 182
 183         // Call for the second course we unenrolled the user from, expected warning.
 184         $result = mod_lti_external::get_ltis_by_courses(array($course2->id));
 185         $this->assertCount(1, $result['warnings']);
 186         $this->assertEquals('1', $result['warnings'][0]['warningcode']);
 187         $this->assertEquals($course2->id, $result['warnings'][0]['itemid']);
 188
 189         // Now, try as a teacher for getting all the additional fields.
 190         self::setUser($this->teacher);
 191
 192         $additionalfields = array('timecreated', 'timemodified', 'typeid', 'toolurl', 'securetoolurl',
 193                         'instructorchoicesendname', 'instructorchoicesendemailaddr', 'instructorchoiceallowroster',
 194                         'instructorchoiceallowsetting', 'instructorcustomparameters', 'instructorchoiceacceptgrades', 'grade',
 195                         'resourcekey', 'password', 'debuglaunch', 'servicesalt', 'visible', 'groupmode', 'groupingid');
 196
 197         foreach ($additionalfields as $field) {
 198                 $expectedltis[0][$field] = $lti1->{$field};
 199         }
 200
 201         $result = mod_lti_external::get_ltis_by_courses();
 202         $result = external_api::clean_returnvalue($returndescription, $result);
 203         $this->assertEquals($expectedltis, $result['ltis']);
 204
 205         // Admin also should get all the information.
 206         self::setAdminUser();
 207
 208         $result = mod_lti_external::get_ltis_by_courses(array($this->course->id));
 209         $result = external_api::clean_returnvalue($returndescription, $result);
 210         $this->assertEquals($expectedltis, $result['ltis']);
 211
 212         // Now, prohibit capabilities.
 213         $this->setUser($this->student);
 214         $contextcourse1 = context_course::instance($this->course->id);
 215         // Prohibit capability = mod:lti:view on Course1 for students.
 216         assign_capability('mod/lti:view', CAP_PROHIBIT, $this->studentrole->id, $contextcourse1->id);
 217         // Empty all the caches that may be affected by this change.
 218         accesslib_clear_all_caches_for_unit_testing();
 219         course_modinfo::clear_instance_cache();
 220
 221         $ltis = mod_lti_external::get_ltis_by_courses(array($this->course->id));
 222         $ltis = external_api::clean_returnvalue(mod_lti_external::get_ltis_by_courses_returns(), $ltis);
 223         $this->assertCount(0, $ltis['ltis']);
 224     }
 225
 226     /**
 227      * Test view_lti
 228      */
 229     public function test_view_lti() {
 230         global $DB;
 231
 232         // Test invalid instance id.
 233         try {
 234             mod_lti_external::view_lti(0);
 235             $this->fail('Exception expected due to invalid mod_lti instance id.');
 236         } catch (moodle_exception $e) {
 237             $this->assertEquals('invalidrecord', $e->errorcode);
 238         }
 239
 240         // Test not-enrolled user.
 241         $usernotenrolled = self::getDataGenerator()->create_user();
 242         $this->setUser($usernotenrolled);
 243         try {
 244             mod_lti_external::view_lti($this->lti->id);
 245             $this->fail('Exception expected due to not enrolled user.');
 246         } catch (moodle_exception $e) {
 247             $this->assertEquals('requireloginerror', $e->errorcode);
 248         }
 249
 250         // Test user with full capabilities.
 251         $this->setUser($this->student);
 252
 253         // Trigger and capture the event.
 254         $sink = $this->redirectEvents();
 255
 256         $result = mod_lti_external::view_lti($this->lti->id);
 257         $result = external_api::clean_returnvalue(mod_lti_external::view_lti_returns(), $result);
 258
 259         $events = $sink->get_events();
 260         $this->assertCount(1, $events);
 261         $event = array_shift($events);
 262
 263         // Checking that the event contains the expected values.
 264         $this->assertInstanceOf('\mod_lti\event\course_module_viewed', $event);
 265         $this->assertEquals($this->context, $event->get_context());
 266         $moodlelti = new \moodle_url('/mod/lti/view.php', array('id' => $this->cm->id));
 267         $this->assertEquals($moodlelti, $event->get_url());
 268         $this->assertEventContextNotUsed($event);
 269         $this->assertNotEmpty($event->get_name());
 270
 271         // Test user with no capabilities.
 272         // We need a explicit prohibit since this capability is only defined in authenticated user and guest roles.
 273         assign_capability('mod/lti:view', CAP_PROHIBIT, $this->studentrole->id, $this->context->id);
 274         // Empty all the caches that may be affected by this change.
 275         accesslib_clear_all_caches_for_unit_testing();
 276         course_modinfo::clear_instance_cache();
 277
 278         try {
 279             mod_lti_external::view_lti($this->lti->id);
 280             $this->fail('Exception expected due to missing capability.');
 281         } catch (moodle_exception $e) {
 282             $this->assertEquals('requireloginerror', $e->errorcode);
 283         }
 284
 285     }
 286
 287     /*
 288      * Test create tool proxy
 289      */
 290     public function test_mod_lti_create_tool_proxy() {
 291         $capabilities = ['AA', 'BB'];
 292         $proxy = mod_lti_external::create_tool_proxy('Test proxy', $this->getExternalTestFileUrl('/test.html'), $capabilities, []);
 293         $this->assertEquals('Test proxy', $proxy->name);
 294         $this->assertEquals($this->getExternalTestFileUrl('/test.html'), $proxy->regurl);
 295         $this->assertEquals(LTI_TOOL_PROXY_STATE_PENDING, $proxy->state);
 296         $this->assertEquals(implode("\n", $capabilities), $proxy->capabilityoffered);
 297     }
 298
 299     /*
 300      * Test create tool proxy with duplicate url
 301      */
 302     public function test_mod_lti_create_tool_proxy_duplicateurl() {
 303         $this->expectException('moodle_exception');
 304         $proxy = mod_lti_external::create_tool_proxy('Test proxy 1', $this->getExternalTestFileUrl('/test.html'), array(), array());
 305         $proxy = mod_lti_external::create_tool_proxy('Test proxy 2', $this->getExternalTestFileUrl('/test.html'), array(), array());
 306     }
 307
 308     /*
 309      * Test create tool proxy without sufficient capability
 310      */
 311     public function test_mod_lti_create_tool_proxy_without_capability() {
 312         self::setUser($this->teacher);
 313         $this->expectException('required_capability_exception');
 314         $proxy = mod_lti_external::create_tool_proxy('Test proxy', $this->getExternalTestFileUrl('/test.html'), array(), array());
 315     }
 316
 317     /*
 318      * Test delete tool proxy
 319      */
 320     public function test_mod_lti_delete_tool_proxy() {
 321         $proxy = mod_lti_external::create_tool_proxy('Test proxy', $this->getExternalTestFileUrl('/test.html'), array(), array());
 322         $this->assertNotEmpty(lti_get_tool_proxy($proxy->id));
 323
 324         $proxy = mod_lti_external::delete_tool_proxy($proxy->id);
 325         $this->assertEquals('Test proxy', $proxy->name);
 326         $this->assertEquals($this->getExternalTestFileUrl('/test.html'), $proxy->regurl);
 327         $this->assertEquals(LTI_TOOL_PROXY_STATE_PENDING, $proxy->state);
 328         $this->assertEmpty(lti_get_tool_proxy($proxy->id));
 329     }
 330
 331     /*
 332      * Test get tool proxy registration request
 333      */
 334     public function test_mod_lti_get_tool_proxy_registration_request() {
 335         $proxy = mod_lti_external::create_tool_proxy('Test proxy', $this->getExternalTestFileUrl('/test.html'), array(), array());
 336         $request = mod_lti_external::get_tool_proxy_registration_request($proxy->id);
 337         $this->assertEquals('ToolProxyRegistrationRequest', $request['lti_message_type']);
 338         $this->assertEquals('LTI-2p0', $request['lti_version']);
 339     }
 340
 341     /*
 342      * Test get tool types
 343      */
 344     public function test_mod_lti_get_tool_types() {
 345         // Create a tool proxy.
 346         $proxy = mod_lti_external::create_tool_proxy('Test proxy', $this->getExternalTestFileUrl('/test.html'), array(), array());
 347
 348         // Create a tool type, associated with that proxy.
 349         $type = new stdClass();
 350         $data = new stdClass();
 351         $type->state = LTI_TOOL_STATE_CONFIGURED;
 352         $type->name = "Test tool";
 353         $type->description = "Example description";
 354         $type->toolproxyid = $proxy->id;
 355         $type->baseurl = $this->getExternalTestFileUrl('/test.html');
 356         $typeid = lti_add_type($type, $data);
 357
 358         $types = mod_lti_external::get_tool_types($proxy->id);
 359         $this->assertEquals(1, count($types));
 360         $type = $types[0];
 361         $this->assertEquals('Test tool', $type['name']);
 362         $this->assertEquals('Example description', $type['description']);
 363     }
 364
 365     /*
 366      * Test create tool type
 367      */
 368     public function test_mod_lti_create_tool_type() {
 369         $type = mod_lti_external::create_tool_type($this->getExternalTestFileUrl('/ims_cartridge_basic_lti_link.xml'), '', '');
 370         $this->assertEquals('Example tool', $type['name']);
 371         $this->assertEquals('Example tool description', $type['description']);
 372         $this->assertEquals('https://download.moodle.org/unittest/test.jpg', $type['urls']['icon']);
 373         $typeentry = lti_get_type($type['id']);
 374         $this->assertEquals('http://www.example.com/lti/provider.php', $typeentry->baseurl);
 375         $config = lti_get_type_config($type['id']);
 376         $this->assertTrue(isset($config['sendname']));
 377         $this->assertTrue(isset($config['sendemailaddr']));
 378         $this->assertTrue(isset($config['acceptgrades']));
 379         $this->assertTrue(isset($config['forcessl']));
 380     }
 381
 382     /*
 383      * Test create tool type failure from non existant file
 384      */
 385     public function test_mod_lti_create_tool_type_nonexistant_file() {
 386         $this->expectException('moodle_exception');
 387         $type = mod_lti_external::create_tool_type($this->getExternalTestFileUrl('/doesntexist.xml'), '', '');
 388     }
 389
 390     /*
 391      * Test create tool type failure from xml that is not a cartridge
 392      */
 393     public function test_mod_lti_create_tool_type_bad_file() {
 394         $this->expectException('moodle_exception');
 395         $type = mod_lti_external::create_tool_type($this->getExternalTestFileUrl('/rsstest.xml'), '', '');
 396     }
 397
 398     /*
 399      * Test creating of tool types without sufficient capability
 400      */
 401     public function test_mod_lti_create_tool_type_without_capability() {
 402         self::setUser($this->teacher);
 403         $this->expectException('required_capability_exception');
 404         $type = mod_lti_external::create_tool_type($this->getExternalTestFileUrl('/ims_cartridge_basic_lti_link.xml'), '', '');
 405     }
 406
 407     /*
 408      * Test update tool type
 409      */
 410     public function test_mod_lti_update_tool_type() {
 411         $type = mod_lti_external::create_tool_type($this->getExternalTestFileUrl('/ims_cartridge_basic_lti_link.xml'), '', '');
 412         $type = mod_lti_external::update_tool_type($type['id'], 'New name', 'New description', LTI_TOOL_STATE_PENDING);
 413         $this->assertEquals('New name', $type['name']);
 414         $this->assertEquals('New description', $type['description']);
 415         $this->assertEquals('Pending', $type['state']['text']);
 416     }
 417
 418     /*
 419      * Test delete tool type
 420      */
 421     public function test_mod_lti_delete_tool_type() {
 422         $type = mod_lti_external::create_tool_type($this->getExternalTestFileUrl('/ims_cartridge_basic_lti_link.xml'), '', '');
 423         $this->assertNotEmpty(lti_get_type($type['id']));
 424         $type = mod_lti_external::delete_tool_type($type['id']);
 425         $this->assertEmpty(lti_get_type($type['id']));
 426     }
 427
 428     /*
 429      * Test delete tool type without sufficient capability
 430      */
 431     public function test_mod_lti_delete_tool_type_without_capability() {
 432         $type = mod_lti_external::create_tool_type($this->getExternalTestFileUrl('/ims_cartridge_basic_lti_link.xml'), '', '');
 433         $this->assertNotEmpty(lti_get_type($type['id']));
 434         $this->expectException('required_capability_exception');
 435         self::setUser($this->teacher);
 436         $type = mod_lti_external::delete_tool_type($type['id']);
 437     }
 438
 439     /*
 440      * Test is cartridge
 441      */
 442     public function test_mod_lti_is_cartridge() {
 443         $result = mod_lti_external::is_cartridge($this->getExternalTestFileUrl('/ims_cartridge_basic_lti_link.xml'));
 444         $this->assertTrue($result['iscartridge']);
 445         $result = mod_lti_external::is_cartridge($this->getExternalTestFileUrl('/test.html'));
 446         $this->assertFalse($result['iscartridge']);
 447     }
 448 }