public function testGetters()
 {
     $usage = $this->prophesize('SensioLabs\\DeprecationDetector\\FileInfo\\Usage\\UsageInterface');
     $usage->getLineNumber()->willReturn(10);
     $usage = $usage->reveal();
     $file = $this->prophesize('SensioLabs\\DeprecationDetector\\FileInfo\\PhpFileInfo');
     $file = $file->reveal();
     $violation = new Violation($usage, $file, 'comment');
     $this->assertEquals(10, $violation->getLine());
     $this->assertEquals($usage, $violation->getUsage());
     $this->assertEquals($file, $violation->getFile());
     $this->assertEquals('comment', $violation->getComment());
 }