@dataProvider getInvalidUrls
public function testInvalidUrls($url) {
$constraint = new Url(array(
'message' => 'myMessage',
));
$this->context
->expects($this
->once())
->method('addViolation')
->with('myMessage', array(
'{{ value }}' => $url,
));
$this->validator
->validate($url, $constraint);
}