Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - https://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <https://www.gnu.org/licenses/>.

namespace core;

/**

 * Unit tests for context helper class.

 *

 * NOTE: more tests are in lib/tests/accesslib_test.php

 *

 * @package   core

 * @copyright Petr Skoda

 * @license   https://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 * @coversDefaultClass \core\context_helper

 */

class context_helper_test extends \advanced_testcase {

    /**

     * Tests covered method.

     * @covers ::parse_external_level

     */

    public function test_parse_external_level() {

        $this->assertSame(context\system::class, context_helper::parse_external_level('system'));

        $this->assertSame(context\system::class, context_helper::parse_external_level(CONTEXT_SYSTEM));

        $this->assertSame(context\system::class, context_helper::parse_external_level((string)CONTEXT_SYSTEM));

        $this->assertSame(context\user::class, context_helper::parse_external_level('user'));

        $this->assertSame(context\user::class, context_helper::parse_external_level(CONTEXT_USER));

        $this->assertSame(context\user::class, context_helper::parse_external_level((string)CONTEXT_USER));

        $this->assertSame(context\coursecat::class, context_helper::parse_external_level('coursecat'));

        $this->assertSame(context\coursecat::class, context_helper::parse_external_level(CONTEXT_COURSECAT));

        $this->assertSame(context\coursecat::class, context_helper::parse_external_level((string)CONTEXT_COURSECAT));

        $this->assertSame(context\course::class, context_helper::parse_external_level('course'));

        $this->assertSame(context\course::class, context_helper::parse_external_level(CONTEXT_COURSE));

        $this->assertSame(context\course::class, context_helper::parse_external_level((string)CONTEXT_COURSE));

        $this->assertSame(context\module::class, context_helper::parse_external_level('module'));

        $this->assertSame(context\module::class, context_helper::parse_external_level(CONTEXT_MODULE));

        $this->assertSame(context\module::class, context_helper::parse_external_level((string)CONTEXT_MODULE));

        $this->assertSame(context\block::class, context_helper::parse_external_level('block'));

        $this->assertSame(context\block::class, context_helper::parse_external_level(CONTEXT_BLOCK));

        $this->assertSame(context\block::class, context_helper::parse_external_level((string)CONTEXT_BLOCK));

        $this->assertNull(context_helper::parse_external_level('core_system'));

        $this->assertNull(context_helper::parse_external_level('xsystem'));

        $this->assertNull(context_helper::parse_external_level(1));

        $this->assertNull(context_helper::parse_external_level(''));

    }

    /**

     * Tests covered method.

     * @covers ::resolve_behat_reference

     */

    public function test_resolve_behat_reference() {

        $this->assertNull(context_helper::resolve_behat_reference('blahbla', 'blahbla'));

        $this->assertNull(context_helper::resolve_behat_reference('', ''));

        $this->assertNull(context_helper::resolve_behat_reference('0', ''));

        $syscontext = context\system::instance();

        $result = context_helper::resolve_behat_reference('System', '');

        $this->assertSame($syscontext->id, $result->id);

        $syscontext = context\system::instance();

        $result = context_helper::resolve_behat_reference('10', '');

        $this->assertSame($syscontext->id, $result->id);

        // The rest is tested in each context class test.

    }

    /**

     * Tests covered method.

     * @covers ::get_class_for_level

     */

    public function test_get_class_for_level() {

        $this->assertSame(context\system::class, context_helper::get_class_for_level(CONTEXT_SYSTEM));

        $this->assertSame(context\system::class, context_helper::get_class_for_level((string)CONTEXT_SYSTEM));

        $this->assertSame(context\user::class, context_helper::get_class_for_level(CONTEXT_USER));

        $this->assertSame(context\user::class, context_helper::get_class_for_level((string)CONTEXT_USER));

        $this->assertSame(context\coursecat::class, context_helper::get_class_for_level(CONTEXT_COURSECAT));

        $this->assertSame(context\coursecat::class, context_helper::get_class_for_level((string)CONTEXT_COURSECAT));

        $this->assertSame(context\course::class, context_helper::get_class_for_level(CONTEXT_COURSE));

        $this->assertSame(context\course::class, context_helper::get_class_for_level((string)CONTEXT_COURSE));

        $this->assertSame(context\module::class, context_helper::get_class_for_level(CONTEXT_MODULE));

        $this->assertSame(context\module::class, context_helper::get_class_for_level((string)CONTEXT_MODULE));

        $this->assertSame(context\block::class, context_helper::get_class_for_level(CONTEXT_BLOCK));

        $this->assertSame(context\block::class, context_helper::get_class_for_level((string)CONTEXT_BLOCK));

        try {

            context_helper::get_class_for_level(1);

            $this->fail('Exception expected if level does not exist');

        } catch (\moodle_exception $e) {

            $this->assertInstanceOf(\coding_exception::class, $e);

            $this->assertSame('Coding error detected, it must be fixed by a programmer: Invalid context level specified',

                $e->getMessage());

        }

    }

    /**

     * Tests covered method.

     * @covers ::get_all_levels

     */

    public function test_get_all_levels() {

        $levels = context_helper::get_all_levels();

        $this->assertArrayHasKey(CONTEXT_SYSTEM, $levels);

        $this->assertSame(context\system::class, $levels[CONTEXT_SYSTEM]);

        $this->assertArrayHasKey(CONTEXT_USER, $levels);

        $this->assertSame(context\user::class, $levels[CONTEXT_USER]);

        $this->assertArrayHasKey(CONTEXT_COURSECAT, $levels);

        $this->assertSame(context\coursecat::class, $levels[CONTEXT_COURSECAT]);

        $this->assertArrayHasKey(CONTEXT_COURSE, $levels);

        $this->assertSame(context\course::class, $levels[CONTEXT_COURSE]);

        $this->assertArrayHasKey(CONTEXT_MODULE, $levels);

        $this->assertSame(context\module::class, $levels[CONTEXT_MODULE]);

        $this->assertArrayHasKey(CONTEXT_BLOCK, $levels);

        $this->assertSame(context\block::class, $levels[CONTEXT_BLOCK]);

        $sorted = $levels;

        ksort($sorted, SORT_NUMERIC);

        $block = $sorted[CONTEXT_BLOCK];

        unset($sorted[CONTEXT_BLOCK]);

        $sorted[CONTEXT_BLOCK] = $block;

        $this->assertSame(array_keys($sorted), array_keys($levels));

        // Make sure level is set properly.

        foreach ($levels as $level => $classname) {

            $this->assertEquals($level, $classname::LEVEL);

            if ($level != CONTEXT_SYSTEM) {

                $this->assertGreaterThan(CONTEXT_SYSTEM, $level);

            }

        }

    }

    /**

     * Tests covered method.

     * @covers ::get_child_levels

     */

    public function test_get_child_levels() {

        $alllevels = context_helper::get_all_levels();

        $childlevels = context_helper::get_child_levels(CONTEXT_SYSTEM);

        $this->assertSame(count($alllevels) - 1, count($childlevels));

        $childlevels = context_helper::get_child_levels(CONTEXT_USER);

        $this->assertNotContains(CONTEXT_SYSTEM, $childlevels);

        $this->assertNotContains(CONTEXT_USER, $childlevels);

        $this->assertNotContains(CONTEXT_COURSECAT, $childlevels);

        $this->assertNotContains(CONTEXT_COURSE, $childlevels);

        $this->assertNotContains(CONTEXT_MODULE, $childlevels);

        $this->assertContains(CONTEXT_BLOCK, $childlevels);

        $childlevels = context_helper::get_child_levels(CONTEXT_COURSECAT);

        $this->assertNotContains(CONTEXT_SYSTEM, $childlevels);

        $this->assertNotContains(CONTEXT_USER, $childlevels);

        $this->assertContains(CONTEXT_COURSECAT, $childlevels);

        $this->assertContains(CONTEXT_COURSE, $childlevels);

        $this->assertContains(CONTEXT_MODULE, $childlevels);

        $this->assertContains(CONTEXT_BLOCK, $childlevels);

        $childlevels = context_helper::get_child_levels(CONTEXT_COURSE);

        $this->assertNotContains(CONTEXT_SYSTEM, $childlevels);

        $this->assertNotContains(CONTEXT_USER, $childlevels);

        $this->assertNotContains(CONTEXT_COURSECAT, $childlevels);

        $this->assertNotContains(CONTEXT_COURSE, $childlevels);

        $this->assertContains(CONTEXT_MODULE, $childlevels);

        $this->assertContains(CONTEXT_BLOCK, $childlevels);

        $childlevels = context_helper::get_child_levels(CONTEXT_MODULE);

        $this->assertNotContains(CONTEXT_SYSTEM, $childlevels);

        $this->assertNotContains(CONTEXT_USER, $childlevels);

        $this->assertNotContains(CONTEXT_COURSECAT, $childlevels);

        $this->assertNotContains(CONTEXT_COURSE, $childlevels);

        $this->assertNotContains(CONTEXT_MODULE, $childlevels);

        $this->assertContains(CONTEXT_BLOCK, $childlevels);

        $childlevels = context_helper::get_child_levels(CONTEXT_BLOCK);

        $this->assertCount(0, $childlevels);

    }

    /**

     * Tests covered method.

     * @covers ::get_compatible_levels

     */

    public function test_get_compatible_levels() {

        $levels = context_helper::get_compatible_levels('manager');

        $this->assertContains(CONTEXT_SYSTEM, $levels);

        $this->assertNotContains(CONTEXT_USER, $levels);

        $this->assertContains(CONTEXT_COURSECAT, $levels);

        $this->assertContains(CONTEXT_COURSE, $levels);

        $this->assertNotContains(CONTEXT_MODULE, $levels);

        $this->assertNotContains(CONTEXT_BLOCK, $levels);

        $levels = context_helper::get_compatible_levels('coursecreator');

        $this->assertContains(CONTEXT_SYSTEM, $levels);

        $this->assertNotContains(CONTEXT_USER, $levels);

        $this->assertContains(CONTEXT_COURSECAT, $levels);

        $this->assertNotContains(CONTEXT_COURSE, $levels);

        $this->assertNotContains(CONTEXT_MODULE, $levels);

        $this->assertNotContains(CONTEXT_BLOCK, $levels);

        $levels = context_helper::get_compatible_levels('editingteacher');

        $this->assertNotContains(CONTEXT_SYSTEM, $levels);

        $this->assertNotContains(CONTEXT_USER, $levels);

        $this->assertNotContains(CONTEXT_COURSECAT, $levels);

        $this->assertContains(CONTEXT_COURSE, $levels);

        $this->assertContains(CONTEXT_MODULE, $levels);

        $this->assertNotContains(CONTEXT_BLOCK, $levels);

        $levels = context_helper::get_compatible_levels('teacher');

        $this->assertNotContains(CONTEXT_SYSTEM, $levels);

        $this->assertNotContains(CONTEXT_USER, $levels);

        $this->assertNotContains(CONTEXT_COURSECAT, $levels);

        $this->assertContains(CONTEXT_COURSE, $levels);

        $this->assertContains(CONTEXT_MODULE, $levels);

        $this->assertNotContains(CONTEXT_BLOCK, $levels);

        $levels = context_helper::get_compatible_levels('student');

        $this->assertNotContains(CONTEXT_SYSTEM, $levels);

        $this->assertNotContains(CONTEXT_USER, $levels);

        $this->assertNotContains(CONTEXT_COURSECAT, $levels);

        $this->assertContains(CONTEXT_COURSE, $levels);

        $this->assertContains(CONTEXT_MODULE, $levels);

        $this->assertNotContains(CONTEXT_BLOCK, $levels);

        $levels = context_helper::get_compatible_levels('user');

        $this->assertCount(0, $levels);

        $levels = context_helper::get_compatible_levels('guest');

        $this->assertCount(0, $levels);

        $levels = context_helper::get_compatible_levels('frontpage');

        $this->assertCount(0, $levels);

    }

    /**

     * Tests covered method.

     * @covers ::cleanup_instances

     */

    public function test_cleanup_instances() {

        global $DB;

        $this->resetAfterTest();

        $this->preventResetByRollback();

        $prevcount = $DB->count_records('context', []);

        context_helper::cleanup_instances();

        $count = $DB->count_records('context', []);

        $this->assertSame($prevcount, $count);

        // Insert bogus records for each level and see if they get removed,

        // more test should be in tests for each context level.

        $alllevels = context_helper::get_all_levels();

        foreach ($alllevels as $classname) {

            if ($classname::LEVEL == CONTEXT_SYSTEM) {

                continue;

            }

            $record = new \stdClass();

            $record->contextlevel = $classname::LEVEL;

            $record->instanceid = 9999999999;

            $record->path = null;

            $record->depth = '2';

            $record->id = $DB->insert_record('context', $record);

            $DB->set_field('context', 'path', SYSCONTEXTID . '/' . $record->id, ['id' => $record->id]);

        }

        context_helper::cleanup_instances();

        $count = $DB->count_records('context', []);

        $this->assertSame($prevcount, $count);

    }

    /**

     * Tests covered method.

     * @covers ::create_instances

     */

    public function test_create_instances() {

        global $DB;

        $this->resetAfterTest();

        $this->preventResetByRollback();

        $user = $this->getDataGenerator()->create_user();

        $usercontext = context\user::instance($user->id);

        $category = $this->getDataGenerator()->create_category();

        $categorycontext = context\coursecat::instance($category->id);

        $course = $this->getDataGenerator()->create_course();

        $coursecontext = context\course::instance($course->id);

        $page = $this->getDataGenerator()->create_module('page', ['course' => $course->id]);

        $pagecontext = context\module::instance($page->cmid);

        $prevcount = $DB->count_records('context', []);

        $DB->delete_records('context', ['id' => $usercontext->id]);

        $DB->delete_records('context', ['id' => $categorycontext->id]);

        $DB->delete_records('context', ['id' => $coursecontext->id]);

        $DB->delete_records('context', ['id' => $pagecontext->id]);

        context_helper::create_instances();

        $count = $DB->count_records('context', []);

        $this->assertSame($prevcount, $count);

    }

    /**

     * Tests covered method.

     * @covers ::build_all_paths

     */

    public function test_build_all_paths() {

        $this->resetAfterTest();

        $this->preventResetByRollback();

        // Just make sure there are no fatal errors for now.

        context_helper::build_all_paths(true);

        context_helper::build_all_paths();

    }

    /**

     * Tests covered method.

     * @covers ::reset_caches

     */

    public function test_reset_caches() {

        $this->resetAfterTest();

        $this->preventResetByRollback();

        // Just make sure there are no fatal errors for now.

        context_helper::reset_caches();

    }

    /**

     * Tests covered method.

     * @covers ::get_preload_record_columns

     */

    public function test_get_preload_record_columns() {

        $expected = array (

            'testalias.id' => 'ctxid',

            'testalias.path' => 'ctxpath',

            'testalias.depth' => 'ctxdepth',

            'testalias.contextlevel' => 'ctxlevel',

            'testalias.instanceid' => 'ctxinstance',

            'testalias.locked' => 'ctxlocked',

        );

        $result = context_helper::get_preload_record_columns('testalias');

        $this->assertSame($expected, $result);

    }

    /**

     * Tests covered method.

     * @covers ::get_preload_record_columns_sql

     */

    public function test_get_preload_record_columns_sql() {

        global $DB;

        $result = context_helper::get_preload_record_columns_sql('testalias');

        $expected = 'testalias.id AS ctxid, testalias.path AS ctxpath, testalias.depth AS ctxdepth,'

            .' testalias.contextlevel AS ctxlevel, testalias.instanceid AS ctxinstance, testalias.locked AS ctxlocked';

        $this->assertSame($expected, $result);

        $sql = "SELECT id, $result

                  FROM {context} testalias";

        $DB->get_records_sql($sql, []);

    }

    /**

     * Tests covered method.

     * @covers ::preload_from_record

     */

    public function test_preload_from_record() {

        global $DB;

        $select = context_helper::get_preload_record_columns_sql('testalias');

        $sql = "SELECT id, $select

                  FROM {context} testalias";

        $records = $DB->get_records_sql($sql, []);

        foreach ($records as $record) {

            $this->assertNull(context_helper::preload_from_record($record));

        }

        $this->assertDebuggingNotCalled();

        $record = reset($records);

        unset($record->ctxlevel);

        $this->assertNull(context_helper::preload_from_record($record));

    }

    /**

     * Tests covered method.

     * @covers ::preload_contexts_by_id

     */

    public function test_preload_contexts_by_id() {

        global $DB;

        $contextids = $DB->get_fieldset_sql("SELECT id FROM {context}", []);

        context_helper::preload_contexts_by_id($contextids);

        context_helper::preload_contexts_by_id($contextids);

        context_helper::reset_caches();

        context_helper::preload_contexts_by_id($contextids);

    }

    /**

     * Tests covered method.

     * @covers ::preload_course

     */

    public function test_preload_course() {

        global $SITE;

        context_helper::preload_course($SITE->id);

    }

    /**

     * Tests covered method.

     * @covers ::delete_instance

     */

    public function test_delete_instance() {

        $this->resetAfterTest();

        $user = $this->getDataGenerator()->create_user();

        $category = $this->getDataGenerator()->create_category();

        $course = $this->getDataGenerator()->create_course();

        $page = $this->getDataGenerator()->create_module('page', array('course' => $course->id));

        // This is a bit silly test, it might start failing in the future

        // because the instances are not deleted before deleting the contexts.

        context_helper::delete_instance(CONTEXT_USER, $user->id);

        context_helper::delete_instance(CONTEXT_COURSECAT, $category->id);

        context_helper::delete_instance(CONTEXT_COURSE, $course->id);

        context_helper::delete_instance(CONTEXT_MODULE, $page->cmid);

    }

    /**

     * Tests covered method.

     * @covers ::get_level_name

     */

    public function test_get_level_name() {

        $allevels = context_helper::get_all_levels();

        foreach ($allevels as $level => $classname) {

            $name = context_helper::get_level_name($level);

            $this->assertIsString($name);

        }

        $this->assertSame('System', context_helper::get_level_name(CONTEXT_SYSTEM));

        $this->assertSame('User', context_helper::get_level_name(CONTEXT_USER));

        $this->assertSame('Category', context_helper::get_level_name(CONTEXT_COURSECAT));

        $this->assertSame('Course', context_helper::get_level_name(CONTEXT_COURSE));

        $this->assertSame('Activity module', context_helper::get_level_name(CONTEXT_MODULE));

        $this->assertSame('Block', context_helper::get_level_name(CONTEXT_BLOCK));

    }

    /**

     * Tests covered method.

     * @covers ::get_navigation_filter_context

     */

    public function test_get_navigation_filter_context() {

        global $CFG;

        $this->resetAfterTest();

        $user = $this->getDataGenerator()->create_user();

        $usercontext = context\user::instance($user->id);

        $category = $this->getDataGenerator()->create_category();

        $categorycontext = context\coursecat::instance($category->id);

        $course = $this->getDataGenerator()->create_course();

        $coursecontext = context\course::instance($course->id);

        $page = $this->getDataGenerator()->create_module('page', array('course' => $course->id));

        $pagecontext = context\module::instance($page->cmid);

        $systemcontext = context\system::instance();

        // Default is OFF.

        $this->assertSame('0', $CFG->filternavigationwithsystemcontext);

        // First test passed values are returned if disabled.

        set_config('filternavigationwithsystemcontext', '0');

        $this->assertNull(context_helper::get_navigation_filter_context(null));

        $filtercontext = context_helper::get_navigation_filter_context($systemcontext);

        $this->assertSame($systemcontext, $filtercontext);

        $filtercontext = context_helper::get_navigation_filter_context($usercontext);

        $this->assertSame($usercontext, $filtercontext);

        $filtercontext = context_helper::get_navigation_filter_context($categorycontext);

        $this->assertSame($categorycontext, $filtercontext);

        $filtercontext = context_helper::get_navigation_filter_context($coursecontext);

        $this->assertSame($coursecontext, $filtercontext);

        $filtercontext = context_helper::get_navigation_filter_context($pagecontext);

        $this->assertSame($pagecontext, $filtercontext);

        // Now test that any input returns system context if enabled.

        set_config('filternavigationwithsystemcontext', '1');

        $filtercontext = context_helper::get_navigation_filter_context(null);

        $this->assertSame($systemcontext->id, $filtercontext->id);

        $filtercontext = context_helper::get_navigation_filter_context($systemcontext);

        $this->assertSame($systemcontext->id, $filtercontext->id);

        $filtercontext = context_helper::get_navigation_filter_context($usercontext);

        $this->assertSame($systemcontext->id, $filtercontext->id);

        $filtercontext = context_helper::get_navigation_filter_context($categorycontext);

        $this->assertSame($systemcontext->id, $filtercontext->id);

        $filtercontext = context_helper::get_navigation_filter_context($coursecontext);

        $this->assertSame($systemcontext->id, $filtercontext->id);

        $filtercontext = context_helper::get_navigation_filter_context($pagecontext);

        $this->assertSame($systemcontext->id, $filtercontext->id);

    }

}