PHPUnit ZF2 InputFilter with Custom Validator - zend-framework2

Question

I have the following InputFilter:
<?php
namespace Login\InputFilter;
use Zend\InputFilter\InputFilter;
/**
* Class Login
*
* #package Login\InputFilter
*/
class Login extends InputFilter
{
/**
* Construct
*/
public function __construct()
{
/**
* Password
*/
$this->add(
[
'name' => 'password',
'required' => true,
'filters' => [
[
'name' => 'stringtrim'
]
],
'validators' => [
[
'name' => 'stringlength',
'options' => [
'min' => '5',
'max' => '128'
],
'break_chain_on_failure' => true
],
[
'name' => 'regex',
'options' => [
'pattern' => '/^[^\\\' ]+$/'
],
'break_chain_on_failure' => true
]
]
]
);
}
/**
* Init
*/
public function init()
{
/**
* Employee ID
*/
$this->add(
[
'name' => 'employeeId',
'required' => true,
'filters' => [
[
'name' => 'stringtrim'
]
],
'validators' => [
[
'name' => 'stringlength',
'options' => [
'min' => '1',
'max' => '20'
],
'break_chain_on_failure' => true
],
[
'name' => 'digits',
'break_chain_on_failure' => true
],
[
'name' => 'Login\Validator\EmployeeId',
'break_chain_on_failure' => true
]
]
]
);
}
}
Attached to the employeeId is a custom validator I've created to check if the Employee ID actually exists in a database. It has a constructor for Doctrine Entity Manager. This works fine when testing via the web, so no worries there.
However now I would like to test via PHPUnit and I've created the following test:
<?php
namespace LoginTest\InputFilter;
use Login\InputFilter\Login;
/**
* Class LoginTest
*
* #package LoginTest\InputFilter
*/
class LoginTest extends \PHPUnit_Framework_TestCase
{
/**
* #var Login $inputFilter
*/
protected $inputFilter;
public function setUp()
{
$this->inputFilter = new Login();
$this->inputFilter->init();
parent::setUp();
}
public function testFormHasElements()
{
$inputs = $this->inputFilter->getInputs();
$this->assertArrayHasKey(
'employeeId',
$inputs
);
$this->assertArrayHasKey(
'password',
$inputs
);
}
}
When the test runs the following error is produced:
1) LoginTest\InputFilter\LoginTest::testFormHasElements
Argument 1 passed to Login\Validator\EmployeeId::__construct() must be an instance of Doctrine\ORM\EntityManager, none given, called in /vhosts/admin-application/vendor/zendframework/zendframework/library/Zend/ServiceManager/AbstractPluginManager.php on line 180 and defined
I'm not certain how I can get passed this particular error. I assume I need to use Mockery but I'm not certain.
The validator has a Factory which supplies the Doctrine Entity Manager from the Service Locator.
I am still very new to PHPUnit but I've been trying to do my research before asking here.
Any ideas?

Answer 1

You're getting this error because you directly instantiate you input filter and it isn't then aware of your custom validator factory.
In real application InputFilter is using Zend\Validator\ValidatorPluginManager for getting validators from service manager.
I see two ways how to solve this problem:
1.) You can setup real service manager from application configuration, like it's described in documentation and then pull the input filter from service manager:
$inputFilter = Bootstrap::getServiceManager()->get(\Login\InputFilter\Login::class); // change the service name if you have another
This solution is good if you want to write some kind of integration tests.
2.) You can mock your custom validator and inject into ValidatorPluginManager in setup method:
protected function setUp()
{
$validator = $this->getMockBuilder(\Login\Validator\EmployeeId::class)->getMock();
$inputFilter = new Login();
$inputFilter->getFactory()
->getDefaultValidatorChain()
->getPluginManager()
->setService(\Login\Validator\EmployeeId::class, $validator);
$inputFilter->init();
$this->inputFilter = $inputFilter;
parent::setUp();
}
This solution is good if you want to write unit tests for Login input filter.