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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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namespace core\lock;
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/**
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* Unit tests for the postgres lock factory.
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*
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* @covers \core\lock\postgres_lock_factory
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* @package core
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* @copyright 2024 Martin Gauk <martin.gauk@tu-berlin.de>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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final class postgres_lock_factory_test extends \advanced_testcase {
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/**
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* Set up.
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*/
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public function setUp(): void {
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global $DB;
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parent::setUp();
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// Skip tests if not using Postgres.
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if (!($DB instanceof \pgsql_native_moodle_database)) {
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$this->markTestSkipped('Postgres-only test');
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}
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}
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/**
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* Test locking resources that lead to the same token computed by postgres_lock_factory::get_index_from_key.
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*
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* It is known that get_index_from_key computes the same token for the strings 'cron_core_cron' and
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* 'cron_adhoc_82795762'.
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*/
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public function test_resources_with_same_hash(): void {
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$cronlockfactory = new postgres_lock_factory('cron');
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$lock1 = $cronlockfactory->get_lock('core_cron', 0);
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$this->assertNotFalse($lock1);
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$lock2 = $cronlockfactory->get_lock('adhoc_82795762', 0);
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$this->assertNotFalse($lock2);
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$lock2->release();
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$lock1->release();
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}
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/**
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* Test auto_release() method.
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*
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* Check that all locks were released after calling auto_release().
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*/
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public function test_auto_release(): void {
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$cronlockfactory = new postgres_lock_factory('test');
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$lock1 = $cronlockfactory->get_lock('1', 0);
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$this->assertNotFalse($lock1);
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$lock2 = $cronlockfactory->get_lock('2', 0);
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$this->assertNotFalse($lock2);
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// Trying to get the lock again should fail as the lock is already held.
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$this->assertFalse($cronlockfactory->get_lock('1', 0));
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$cronlockfactory->auto_release();
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// We can now lock the resources again.
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$lock1again = $cronlockfactory->get_lock('1', 0);
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$this->assertNotFalse($lock1again);
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$lock2again = $cronlockfactory->get_lock('2', 0);
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$this->assertNotFalse($lock2again);
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$lock1again->release();
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$lock2again->release();
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// Need to explicitly release the locks (although they were already released) to avoid the debug message.
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$lock1->release();
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$lock2->release();
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}
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}
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