public function testValidationFailsOnIncorrectType()
 {
     $this->account->setType('unknown');
     $this->assertSame('unknown', $this->account->getType());
     $violations = Validator::validateBankAccount($this->account, null);
     $this->assertTrue(count($violations) === 1);
     $this->assertTrue(count($violations->get('type')) === 1);
 }