public function testForThisFile()
 {
     $message = Message::forThisFile('foo', 'bar');
     $this->assertInstanceOf('JMS\\TranslationBundle\\Model\\Message', $message);
     $this->assertEquals('foo', $message->getId());
     $this->assertEquals('bar', $message->getDomain());
     $source = new FileSource(__FILE__);
     $this->assertTrue($message->hasSource($source));
 }