class SettingsTest

class SettingsTest extends UnitTestCase {
    use ExpectDeprecationTrait;
    
    /**
     * 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() {
        $this->config = [
            'one' => '1',
            'two' => '2',
            'hash_salt' => $this->randomMachineName(),
        ];
        $this->settings = new Settings($this->config);
    }
    
    /**
     * @covers ::get
     */
    public function testGet() {
        // 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() {
        $this->assertEquals($this->config, Settings::getAll());
    }
    
    /**
     * @covers ::getInstance
     */
    public function testGetInstance() {
        $singleton = $this->settings
            ->getInstance();
        $this->assertEquals($singleton, $this->settings);
    }
    
    /**
     * Tests Settings::getHashSalt();
     *
     * @covers ::getHashSalt
     */
    public function testGetHashSalt() {
        $this->assertSame($this->config['hash_salt'], $this->settings
            ->getHashSalt());
    }
    
    /**
     * Tests Settings::getHashSalt() with no hash salt value.
     *
     * @covers ::getHashSalt
     *
     * @dataProvider providerTestGetHashSaltEmpty
     */
    public function testGetHashSaltEmpty(array $config) {
        // 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 function providerTestGetHashSaltEmpty() {
        return [
            [
                [],
            ],
            [
                [
                    'hash_salt' => '',
                ],
            ],
            [
                [
                    'hash_salt' => NULL,
                ],
            ],
        ];
    }
    
    /**
     * Ensures settings cannot be serialized.
     *
     * @covers ::__sleep
     */
    public function testSerialize() {
        $this->expectException(\LogicException::class);
        serialize(new Settings([]));
    }
    
    /**
     * Tests Settings::getApcuPrefix().
     *
     * @covers ::getApcuPrefix
     */
    public function testGetApcuPrefix() {
        $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() {
        $settings = new Settings([]);
        $class = new \ReflectionClass(Settings::class);
        $instace_property = $class->getProperty("instance");
        $instace_property->setAccessible(TRUE);
        $instace_property->setValue(NULL);
        $this->expectException(\BadMethodCallException::class);
        $settings->getInstance();
    }
    
    /**
     * @runInSeparateProcess
     * @group legacy
     * @covers ::__construct
     * @dataProvider configDirectoriesBcLayerProvider
     */
    public function testConfigDirectoriesBcLayer($settings_file_content, $directory, $expect_deprecation) {
        global $config_directories;
        $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);
        if ($expect_deprecation) {
            $this->addExpectedDeprecationMessage('$config_directories[\'sync\'] has moved to $settings[\'config_sync_directory\']. See https://www.drupal.org/node/3018145.');
        }
        Settings::initialize(vfsStream::url('root'), 'sites', $class_loader);
        $this->assertSame($directory, Settings::get('config_sync_directory'));
        $this->assertSame($directory, $config_directories['sync']);
    }
    
    /**
     * Data provider for self::testConfigDirectoriesBcLayer().
     */
    public function configDirectoriesBcLayerProvider() {
        $no_config_directories = <<<'EOD'
<?php
$settings['config_sync_directory'] = 'foo';
EOD;
        $only_config_directories = <<<'EOD'
<?php
$config_directories['sync'] = 'bar';
EOD;
        $both = <<<'EOD'
<?php
$settings['config_sync_directory'] = 'foo';
$config_directories['sync'] = 'bar';
EOD;
        return [
            'Only $settings[\'config_sync_directory\']' => [
                $no_config_directories,
                'foo',
                FALSE,
            ],
            'Only $config_directories' => [
                $only_config_directories,
                'bar',
                TRUE,
            ],
            'Both' => [
                $both,
                'foo',
                FALSE,
            ],
        ];
    }
    
    /**
     * @runInSeparateProcess
     * @group legacy
     */
    public function testConfigDirectoriesBcLayerEmpty() {
        global $config_directories;
        $class_loader = NULL;
        $vfs_root = vfsStream::setup('root');
        $sites_directory = vfsStream::newDirectory('sites')->at($vfs_root);
        vfsStream::newFile('settings.php')->at($sites_directory)
            ->setContent(<<<'EOD'
<?php
$settings = [];
EOD
);
        Settings::initialize(vfsStream::url('root'), 'sites', $class_loader);
        $this->assertNull(Settings::get('config_sync_directory'));
        $this->assertNull($config_directories);
    }
    
    /**
     * @runInSeparateProcess
     * @group legacy
     */
    public function testConfigDirectoriesBcLayerMultiple() {
        global $config_directories;
        $class_loader = NULL;
        $vfs_root = vfsStream::setup('root');
        $sites_directory = vfsStream::newDirectory('sites')->at($vfs_root);
        vfsStream::newFile('settings.php')->at($sites_directory)
            ->setContent(<<<'EOD'
<?php
$settings['config_sync_directory'] = 'foo';
$config_directories['sync'] = 'bar';
$config_directories['custom'] = 'custom';
EOD
);
        Settings::initialize(vfsStream::url('root'), 'sites', $class_loader);
        $this->assertSame('foo', Settings::get('config_sync_directory'));
        $this->assertSame('foo', $config_directories['sync']);
        $this->assertSame('custom', $config_directories['custom']);
    }

}