class SettingsTest

class SettingsTest extends UnitTestCase {
    
    /**
     * Simple settings array to test against.
     *
     * @var array
     */
    protected $config = [];
    
    /**
     * The class under test.
     *
     * @var \Drupal\Core\Site\Settings
     */
    protected $settings;
    
    /**
     * @covers ::__construct
     */
    protected function setUp() : void {
        parent::setUp();
        $this->config = [
            'one' => '1',
            'two' => '2',
            'hash_salt' => $this->randomMachineName(),
        ];
        $this->settings = new Settings($this->config);
    }
    
    /**
     * @covers ::get
     */
    public function testGet() : void {
        // Test stored settings.
        $this->assertEquals($this->config['one'], Settings::get('one'), 'The correct setting was not returned.');
        $this->assertEquals($this->config['two'], Settings::get('two'), 'The correct setting was not returned.');
        // Test setting that isn't stored with default.
        $this->assertEquals('3', Settings::get('three', '3'), 'Default value for a setting not properly returned.');
        $this->assertNull(Settings::get('four'), 'Non-null value returned for a setting that should not exist.');
    }
    
    /**
     * @covers ::getAll
     */
    public function testGetAll() : void {
        $this->assertEquals($this->config, Settings::getAll());
    }
    
    /**
     * @covers ::getInstance
     */
    public function testGetInstance() : void {
        $singleton = $this->settings
            ->getInstance();
        $this->assertEquals($singleton, $this->settings);
    }
    
    /**
     * Tests Settings::getHashSalt().
     *
     * @covers ::getHashSalt
     */
    public function testGetHashSalt() : void {
        $this->assertSame($this->config['hash_salt'], $this->settings
            ->getHashSalt());
    }
    
    /**
     * Tests Settings::getHashSalt() with no hash salt value.
     *
     * @covers ::getHashSalt
     *
     * @dataProvider providerTestGetHashSaltEmpty
     */
    public function testGetHashSaltEmpty(array $config) : void {
        // Re-create settings with no 'hash_salt' key.
        $settings = new Settings($config);
        $this->expectException(\RuntimeException::class);
        $settings->getHashSalt();
    }
    
    /**
     * Data provider for testGetHashSaltEmpty.
     *
     * @return array
     */
    public static function providerTestGetHashSaltEmpty() {
        return [
            [
                [],
            ],
            [
                [
                    'hash_salt' => '',
                ],
            ],
            [
                [
                    'hash_salt' => NULL,
                ],
            ],
        ];
    }
    
    /**
     * Ensures settings cannot be serialized.
     *
     * @covers ::__sleep
     */
    public function testSerialize() : void {
        $this->expectException(\LogicException::class);
        serialize(new Settings([]));
    }
    
    /**
     * Tests Settings::getApcuPrefix().
     *
     * @covers ::getApcuPrefix
     */
    public function testGetApcuPrefix() : void {
        $settings = new Settings([
            'hash_salt' => 123,
            'apcu_ensure_unique_prefix' => TRUE,
        ]);
        $this->assertNotEquals($settings::getApcuPrefix('cache_test', '/test/a'), $settings::getApcuPrefix('cache_test', '/test/b'));
        $settings = new Settings([
            'hash_salt' => 123,
            'apcu_ensure_unique_prefix' => FALSE,
        ]);
        $this->assertNotEquals($settings::getApcuPrefix('cache_test', '/test/a'), $settings::getApcuPrefix('cache_test', '/test/b'));
    }
    
    /**
     * Tests that an exception is thrown when settings are not initialized yet.
     *
     * @covers ::getInstance
     */
    public function testGetInstanceReflection() : void {
        $settings = new Settings([]);
        $class = new \ReflectionClass(Settings::class);
        $instance_property = $class->getProperty("instance");
        $instance_property->setValue(NULL, NULL);
        $this->expectException(\BadMethodCallException::class);
        $settings->getInstance();
    }
    
    /**
     * Tests deprecation messages and values when using fake deprecated settings.
     *
     * Note: Tests for real deprecated settings should not be added to this test
     * or provider. This test is only for the general deprecated settings API
     * itself.
     *
     * @see self::testRealDeprecatedSettings()
     * @see self::providerTestRealDeprecatedSettings()
     *
     * @param string[] $settings_config
     *   Array of settings to put in the settings.php file for testing.
     * @param string $setting_name
     *   The name of the setting this case should use for Settings::get().
     * @param string $expected_value
     *   The expected value of the setting.
     * @param bool $expect_deprecation_message
     *   Should the case expect a deprecation message? Defaults to TRUE.
     *
     * @dataProvider providerTestFakeDeprecatedSettings
     *
     * @covers ::handleDeprecations
     * @covers ::initialize
     *
     * @group legacy
     */
    public function testFakeDeprecatedSettings(array $settings_config, string $setting_name, string $expected_value, bool $expect_deprecation_message = TRUE) : void {
        $settings_file_content = "<?php\n";
        foreach ($settings_config as $name => $value) {
            $settings_file_content .= "\$settings['{$name}'] = '{$value}';\n";
        }
        $class_loader = NULL;
        $vfs_root = vfsStream::setup('root');
        $sites_directory = vfsStream::newDirectory('sites')->at($vfs_root);
        vfsStream::newFile('settings.php')->at($sites_directory)
            ->setContent($settings_file_content);
        // This is the deprecated setting used by all cases for this test method.
        $deprecated_setting = [
            'replacement' => 'happy_replacement',
            'message' => 'The settings key "deprecated_legacy" is deprecated in drupal:9.1.0 and will be removed in drupal:10.0.0. Use "happy_replacement" instead. See https://www.drupal.org/node/3163226.',
        ];
        $class = new \ReflectionClass(Settings::class);
        $instance_property = $class->getProperty('deprecatedSettings');
        $deprecated_settings = $instance_property->getValue();
        $deprecated_settings['deprecated_legacy'] = $deprecated_setting;
        $instance_property->setValue(NULL, $deprecated_settings);
        if ($expect_deprecation_message) {
            $this->expectDeprecation($deprecated_setting['message']);
        }
        Settings::initialize(vfsStream::url('root'), 'sites', $class_loader);
        $this->assertEquals($expected_value, Settings::get($setting_name));
    }
    
    /**
     * Provides data for testFakeDeprecatedSettings().
     *
     * Note: Tests for real deprecated settings should not be added here.
     *
     * @see self::providerTestRealDeprecatedSettings()
     */
    public static function providerTestFakeDeprecatedSettings() : array {
        $only_legacy = [
            'deprecated_legacy' => 'old',
        ];
        $only_replacement = [
            'happy_replacement' => 'new',
        ];
        $both_settings = [
            'deprecated_legacy' => 'old',
            'happy_replacement' => 'new',
        ];
        return [
            'Only legacy defined, get legacy' => [
                $only_legacy,
                'deprecated_legacy',
                'old',
            ],
            'Only legacy defined, get replacement' => [
                $only_legacy,
                'happy_replacement',
                // Since the new setting isn't yet defined, use the old value.
'old',
            ],
            'Both legacy and replacement defined, get legacy' => [
                $both_settings,
                'deprecated_legacy',
                // Since the replacement is already defined, that should be used.
'new',
            ],
            'Both legacy and replacement defined, get replacement' => [
                $both_settings,
                'happy_replacement',
                'new',
            ],
            'Only replacement defined, get legacy' => [
                $only_replacement,
                'deprecated_legacy',
                // Should get the new value.
'new',
            ],
            'Only replacement defined, get replacement' => [
                $only_replacement,
                'happy_replacement',
                // Should get the new value.
'new',
                // No deprecation since the old name is neither used nor defined.
FALSE,
            ],
        ];
    }
    
    /**
     * Tests deprecation messages for real deprecated settings.
     *
     * @param string $legacy_setting
     *   The legacy name of the setting to test.
     * @param string $expected_deprecation
     *   The expected deprecation message.
     *
     * @dataProvider providerTestRealDeprecatedSettings
     * @group legacy
     */
    public function testRealDeprecatedSettings(string $legacy_setting, string $expected_deprecation) : void {
        $settings_file_content = "<?php\n\$settings['{$legacy_setting}'] = 'foo';\n";
        $class_loader = NULL;
        $vfs_root = vfsStream::setup('root');
        $sites_directory = vfsStream::newDirectory('sites')->at($vfs_root);
        vfsStream::newFile('settings.php')->at($sites_directory)
            ->setContent($settings_file_content);
        $this->expectDeprecation($expected_deprecation);
        // Presence of the old name in settings.php is enough to trigger messages.
        Settings::initialize(vfsStream::url('root'), 'sites', $class_loader);
    }
    
    /**
     * Provides data for testRealDeprecatedSettings().
     */
    public static function providerTestRealDeprecatedSettings() : array {
        return [
            [
                'state_cache',
                'The "state_cache" setting is deprecated in drupal:11.0.0. This setting should be removed from the settings file, since its usage has been removed. See https://www.drupal.org/node/3177901.',
            ],
        ];
    }
    
    /**
     * Tests initialization performed for the $databases variable.
     *
     * @dataProvider providerTestDatabaseInfoInitialization
     */
    public function testDatabaseInfoInitialization(string $driver, ?string $namespace, ?string $autoload, string $expected_namespace, ?string $expected_autoload) : void {
        $databases['mock'][$driver] = [
            'driver' => $driver,
            'prefix' => '',
        ];
        if (!is_null($namespace)) {
            $databases['mock'][$driver]['namespace'] = $namespace;
        }
        if (!is_null($autoload)) {
            $databases['mock'][$driver]['autoload'] = $autoload;
        }
        $settings_file_content = "<?php\n\$databases = " . var_export($databases, TRUE) . ";\n";
        $vfs_root = vfsStream::setup('root');
        $sites_directory = vfsStream::newDirectory('sites')->at($vfs_root);
        vfsStream::newFile('settings.php')->at($sites_directory)
            ->setContent($settings_file_content);
        $class_loader = $this->createMock(ClassLoader::class);
        if (!empty($expected_autoload)) {
            $class_loader->expects($this->once())
                ->method('addPsr4')
                ->with($expected_namespace . '\\', vfsStream::url('root') . '/' . $expected_autoload);
        }
        else {
            $class_loader->expects($this->never())
                ->method('addPsr4');
        }
        Settings::initialize(vfsStream::url('root'), 'sites', $class_loader);
        $expected = [
            $driver => [
                'driver' => $driver,
                'namespace' => $expected_namespace,
                'prefix' => '',
            ],
        ];
        if (!is_null($expected_autoload)) {
            $expected[$driver]['autoload'] = $expected_autoload;
        }
        $this->assertEquals($expected, Database::getConnectionInfo('mock'));
    }
    
    /**
     * Provides data for testDatabaseInfoInitialization().
     */
    public static function providerTestDatabaseInfoInitialization() : array {
        return [
            [
                'mysql',
                NULL,
                NULL,
                'Drupal\\mysql\\Driver\\Database\\mysql',
                'core/modules/mysql/src/Driver/Database/mysql/',
            ],
            [
                'mysql',
                '',
                NULL,
                'Drupal\\mysql\\Driver\\Database\\mysql',
                'core/modules/mysql/src/Driver/Database/mysql/',
            ],
            [
                'mysql',
                'Drupal\\Core\\Database\\Driver\\mysql',
                NULL,
                'Drupal\\mysql\\Driver\\Database\\mysql',
                'core/modules/mysql/src/Driver/Database/mysql/',
            ],
            [
                'mysql',
                'Drupal\\mysql\\Driver\\Database\\mysql',
                NULL,
                'Drupal\\mysql\\Driver\\Database\\mysql',
                'core/modules/mysql/src/Driver/Database/mysql/',
            ],
            [
                'mysql',
                'Drupal\\Driver\\Database\\mysql',
                NULL,
                'Drupal\\Driver\\Database\\mysql',
                NULL,
            ],
            [
                'mysql',
                'Drupal\\mysql\\Driver\\Database\\mysql',
                'modules/custom/mysql/src/Driver/Database/mysql/',
                'Drupal\\mysql\\Driver\\Database\\mysql',
                'modules/custom/mysql/src/Driver/Database/mysql/',
            ],
            [
                'pgsql',
                NULL,
                NULL,
                'Drupal\\pgsql\\Driver\\Database\\pgsql',
                'core/modules/pgsql/src/Driver/Database/pgsql/',
            ],
            [
                'pgsql',
                '',
                NULL,
                'Drupal\\pgsql\\Driver\\Database\\pgsql',
                'core/modules/pgsql/src/Driver/Database/pgsql/',
            ],
            [
                'pgsql',
                'Drupal\\Core\\Database\\Driver\\pgsql',
                NULL,
                'Drupal\\pgsql\\Driver\\Database\\pgsql',
                'core/modules/pgsql/src/Driver/Database/pgsql/',
            ],
            [
                'pgsql',
                'Drupal\\pgsql\\Driver\\Database\\pgsql',
                NULL,
                'Drupal\\pgsql\\Driver\\Database\\pgsql',
                'core/modules/pgsql/src/Driver/Database/pgsql/',
            ],
            [
                'pgsql',
                'Drupal\\Driver\\Database\\pgsql',
                NULL,
                'Drupal\\Driver\\Database\\pgsql',
                NULL,
            ],
            [
                'pgsql',
                'Drupal\\pgsql\\Driver\\Database\\pgsql',
                'modules/custom/pgsql/src/Driver/Database/pgsql/',
                'Drupal\\pgsql\\Driver\\Database\\pgsql',
                'modules/custom/pgsql/src/Driver/Database/pgsql/',
            ],
            [
                'sqlite',
                NULL,
                NULL,
                'Drupal\\sqlite\\Driver\\Database\\sqlite',
                'core/modules/sqlite/src/Driver/Database/sqlite/',
            ],
            [
                'sqlite',
                '',
                NULL,
                'Drupal\\sqlite\\Driver\\Database\\sqlite',
                'core/modules/sqlite/src/Driver/Database/sqlite/',
            ],
            [
                'sqlite',
                'Drupal\\Core\\Database\\Driver\\sqlite',
                NULL,
                'Drupal\\sqlite\\Driver\\Database\\sqlite',
                'core/modules/sqlite/src/Driver/Database/sqlite/',
            ],
            [
                'sqlite',
                'Drupal\\sqlite\\Driver\\Database\\sqlite',
                NULL,
                'Drupal\\sqlite\\Driver\\Database\\sqlite',
                'core/modules/sqlite/src/Driver/Database/sqlite/',
            ],
            [
                'sqlite',
                'Drupal\\Driver\\Database\\sqlite',
                NULL,
                'Drupal\\Driver\\Database\\sqlite',
                NULL,
            ],
            [
                'sqlite',
                'Drupal\\sqlite\\Driver\\Database\\sqlite',
                'modules/custom/sqlite/src/Driver/Database/sqlite/',
                'Drupal\\sqlite\\Driver\\Database\\sqlite',
                'modules/custom/sqlite/src/Driver/Database/sqlite/',
            ],
        ];
    }

}