public function testValidationFailsOnEmptyHolderName()
 {
     $this->account->setHolderName('');
     $this->assertSame('', $this->account->getHolderName());
     $violations = Validator::validateBankAccount($this->account, null);
     $this->assertTrue(count($violations) === 1);
     $this->assertTrue(count($violations->get('holderName')) === 1);
     $this->account->setHolderName(null);
     $this->assertSame(null, $this->account->getHolderName());
     $violations = Validator::validateBankAccount($this->account, null);
     $this->assertTrue(count($violations) === 1);
     $this->assertTrue(count($violations->get('holderName')) === 1);
 }