public function createValidatorReturnsNullIfAValidatorCouldNotBeResolved()
{
$validatorResolver = $this->getMockBuilder(ValidatorResolver::class)->setMethods(['resolveValidatorObjectName'])->getMock();
$validatorResolver->expects($this->once())->method('resolveValidatorObjectName')->with('Foo')->will($this->returnValue(false));
$validator = $validatorResolver->createValidator('Foo', ['foo' => 'bar']);
$this->assertNull($validator);
}