Testing Form symfony with construct - php

Question

The problem was too old version of PHPunit
/////
Now I have other problem.I have that test:
class TodoTypeTest extends TypeTestCase
{
private $em;
protected function setUp()
{
$this->em = $this->createMock(EntityManager::class);
parent::setUp();
}
protected function getExtensions()
{
return array(
new PreloadedExtension([
new TodoType($this->em)
], [])
);
}
public function testTodoType()
{
$task = new Todo();
$form = $this->factory->create(TodoType::class, $task, ['locale' => 'en']);
}
}
I get this problem:
Error: Call to a member function getPrioritysInUserLocaleToForm() on null
Problem is here in TodoType class:
class TodoType extends AbstractType
{
/**
* #var EntityManagerInterface
*/
private $em;
/**
* TodoType constructor.
*
* #param EntityManagerInterface $em
*/
public function __construct(EntityManagerInterface $em)
{
$this->em = $em;
}
/**
* #param FormBuilderInterface $builder
* #param array $options
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('title', Type\TextType::class)
->add('content', Type\TextareaType::class)
->add('priority', Type\ChoiceType::class, [ 'choices' => $this->addChoicesInUserLocale($options['locale']) ])
->add('dueDate', Type\DateTimeType::class, [
'widget' => 'single_text',
'attr' => ['class' => 'js-datepicker'],
'html5' => false,
]);
}
/**
* Configure defaults options
*
* #param OptionsResolver $resolver
*/
public function configureOptions( OptionsResolver $resolver )
{
$resolver->setDefaults( [
'locale' => 'en',
] );
}
/**
* Method adds array with choices to ChoiceType in builder
*
* #param string $locale User's locale
*
* #return array All priority in user _locale formatted as array e.g. ['1' => 'low', ...]
*/
private function addChoicesInUserLocale(string $locale): array
{
return $this->em->getRepository('AppBundle:Priority')
->getPrioritysInUserLocaleToForm($locale);
}
}
I do not know why it is not working :/

Answer 1

As the error message tells you, you are trying to call a method on null in this part of the code:
return $this->em->getRepository('AppBundle:Priority')
->getPrioritysInUserLocaleToForm($locale);
That message tells you, that getRepository() returns null.
This happens because the EntityManager you use is a mock, which will always return null for all methods unless specified otherwise. You can fix this by making it return an EntityRepository instead. You can do this in your test method:
public function testTodoType()
{
$repoMock = $this->createMock(PriorityRepository::class);
$repoMock->expects($this->any())
->method('getPrioritysInUserLocaleToForm')
->with('en')
->willReturn([]); // Whatever you want it to return
$this->em->expects($this->any())
->method('getRepository')
->with('AppBundle:Priority')
->willReturn($repoMock);
$task = new Todo();
$form = $this->factory->create(TodoType::class, $task, ['locale' => 'en']);
}
This will make the EntityManager return your Repository-mock which then in turn returns whatever values you want. The expects() calls are assertions and since your test does not have any yet, you might want to check that the repository method is called using $this->atLeastOnce() instead of $this->any(). In any case for the test to be useful you have to make assertions at some point.