class FileCacheFactoryTest

class FileCacheFactoryTest extends TestCase {
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    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());
  }

}