public function testValidationFailsWithBadAffiliationCodes()
 {
     $this->transaction->setAffiliationCode(12345);
     $this->assertSame(12345, $this->transaction->getAffiliationCode());
     $violations = Validator::validateMoneyTransferTransaction($this->transaction);
     $this->assertTrue(count($violations) === 0);
     //10 digits is ok.
     $this->transaction->setAffiliationCode(1234567890);
     $this->assertSame(1234567890, $this->transaction->getAffiliationCode());
     $violations = Validator::validateMoneyTransferTransaction($this->transaction);
     $this->assertTrue(count($violations) === 0);
     //11 digits is too many.
     $this->transaction->setAffiliationCode(12345678900);
     $this->assertSame(12345678900, $this->transaction->getAffiliationCode());
     $violations = Validator::validateMoneyTransferTransaction($this->transaction);
     $this->assertTrue(count($violations) === 1);
     $this->assertTrue(count($violations->get('affiliationCode')) === 1);
 }