public function testTypeConstraintAndFieldChoices()
{
$constraintChoices = CreditCard::getTypeConstraintChoices();
$this->assertType('array', $constraintChoices);
$fieldChoices = CreditCard::getTypeFieldChoices();
$this->assertType('array', $fieldChoices);
$this->assertEquals(count($constraintChoices), count($fieldChoices));
$this->assertEquals($constraintChoices, array_keys($fieldChoices));
}