class FileCacheFactoryTest

class FileCacheFactoryTest extends TestCase {
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() {
        parent::setUp();
        $configuration = [
            'test_foo_settings' => [
                'collection' => 'test-23',
                'cache_backend_class' => '\\Drupal\\Tests\\Component\\FileCache\\StaticFileCacheBackend',
                'cache_backend_configuration' => [
                    'bin' => 'dog',
                ],
            ],
        ];
        FileCacheFactory::setConfiguration($configuration);
        FileCacheFactory::setPrefix('prefix');
    }
    
    /**
     * @covers ::get
     */
    public function testGet() {
        $file_cache = FileCacheFactory::get('test_foo_settings', []);
        // Ensure the right backend and configuration is used.
        $filename = __DIR__ . '/Fixtures/llama-23.txt';
        $realpath = realpath($filename);
        $cid = 'prefix:test-23:' . $realpath;
        $file_cache->set($filename, 23);
        $static_cache = new StaticFileCacheBackend([
            'bin' => 'dog',
        ]);
        $result = $static_cache->fetch([
            $cid,
        ]);
        $this->assertNotEmpty($result);
        // Cleanup static caches.
        $file_cache->delete($filename);
    }
    
    /**
     * @covers ::get
     */
    public function testGetNoPrefix() {
        FileCacheFactory::setPrefix(NULL);
        $this->expectException(\InvalidArgumentException::class);
        $this->expectExceptionMessage('Required prefix configuration is missing');
        FileCacheFactory::get('test_foo_settings', []);
    }
    
    /**
     * @covers ::get
     */
    public function testGetDisabledFileCache() {
        // Ensure the returned FileCache is an instance of FileCache::class.
        $file_cache = FileCacheFactory::get('test_foo_settings', []);
        $this->assertInstanceOf(FileCache::class, $file_cache);
        $configuration = FileCacheFactory::getConfiguration();
        $configuration[FileCacheFactory::DISABLE_CACHE] = TRUE;
        FileCacheFactory::setConfiguration($configuration);
        // Ensure the returned FileCache is now an instance of NullFileCache::class.
        $file_cache = FileCacheFactory::get('test_foo_settings', []);
        $this->assertInstanceOf(NullFileCache::class, $file_cache);
    }
    
    /**
     * @covers ::get
     *
     * @dataProvider configurationDataProvider
     */
    public function testGetConfigurationOverrides($configuration, $arguments, $class) {
        FileCacheFactory::setConfiguration($configuration);
        $file_cache = FileCacheFactory::get('test_foo_settings', $arguments);
        $this->assertInstanceOf($class, $file_cache);
    }
    
    /**
     * Data provider for testGetConfigurationOverrides().
     */
    public function configurationDataProvider() {
        $data = [];
        // Get a unique FileCache class.
        $file_cache = $this->getMockBuilder(FileCache::class)
            ->disableOriginalConstructor()
            ->getMock();
        $class = get_class($file_cache);
        // Test fallback configuration.
        $data['fallback-configuration'] = [
            [],
            [],
            FileCache::class,
        ];
        // Test default configuration.
        $data['default-configuration'] = [
            [
                'default' => [
                    'class' => $class,
                ],
            ],
            [],
            $class,
        ];
        // Test specific per collection setting.
        $data['collection-setting'] = [
            [
                'test_foo_settings' => [
                    'class' => $class,
                ],
            ],
            [],
            $class,
        ];
        // Test default configuration plus specific per collection setting.
        $data['default-plus-collection-setting'] = [
            [
                'default' => [
                    'class' => '\\stdClass',
                ],
                'test_foo_settings' => [
                    'class' => $class,
                ],
            ],
            [],
            $class,
        ];
        // Test default configuration plus class specific override.
        $data['default-plus-class-override'] = [
            [
                'default' => [
                    'class' => '\\stdClass',
                ],
            ],
            [
                'class' => $class,
            ],
            $class,
        ];
        // Test default configuration plus class specific override plus specific
        // per collection setting.
        $data['default-plus-class-plus-collection-setting'] = [
            [
                'default' => [
                    'class' => '\\stdClass',
                ],
                'test_foo_settings' => [
                    'class' => $class,
                ],
            ],
            [
                'class' => '\\stdClass',
            ],
            $class,
        ];
        return $data;
    }
    
    /**
     * @covers ::getConfiguration
     * @covers ::setConfiguration
     */
    public function testGetSetConfiguration() {
        $configuration = FileCacheFactory::getConfiguration();
        $configuration['test_foo_bar'] = [
            'bar' => 'llama',
        ];
        FileCacheFactory::setConfiguration($configuration);
        $configuration = FileCacheFactory::getConfiguration();
        $this->assertEquals([
            'bar' => 'llama',
        ], $configuration['test_foo_bar']);
    }
    
    /**
     * @covers ::getPrefix
     * @covers ::setPrefix
     */
    public function testGetSetPrefix() {
        // Random generator.
        $random = new Random();
        $prefix = $random->name(8, TRUE);
        FileCacheFactory::setPrefix($prefix);
        $this->assertEquals($prefix, FileCacheFactory::getPrefix());
    }

}