EntityResourceValidationTraitTest.php

<?php

namespace Drupal\Tests\rest\Unit;

use Drupal\Core\Entity\EntityConstraintViolationList;
use Drupal\node\Entity\Node;
use Drupal\rest\Plugin\rest\resource\EntityResourceValidationTrait;
use Drupal\Tests\UnitTestCase;
use Drupal\user\Entity\User;
use Symfony\Component\HttpKernel\Exception\UnprocessableEntityHttpException;
use Symfony\Component\Validator\ConstraintViolationInterface;

/**
 * @group rest
 * @coversDefaultClass \Drupal\rest\Plugin\rest\resource\EntityResourceValidationTrait
 */
class EntityResourceValidationTraitTest extends UnitTestCase {
    
    /**
     * @covers ::validate
     */
    public function testValidate() {
        $trait = new EntityResourceValidationTraitTestClass();
        $method = new \ReflectionMethod($trait, 'validate');
        $method->setAccessible(TRUE);
        $violations = $this->prophesize(EntityConstraintViolationList::class);
        $violations->filterByFieldAccess()
            ->shouldBeCalled()
            ->willReturn([]);
        $violations->count()
            ->shouldBeCalled()
            ->willReturn(0);
        $entity = $this->prophesize(Node::class);
        $entity->validate()
            ->shouldBeCalled()
            ->willReturn($violations->reveal());
        $method->invoke($trait, $entity->reveal());
    }
    
    /**
     * @covers ::validate
     */
    public function testFailedValidate() {
        $violation1 = $this->prophesize(ConstraintViolationInterface::class);
        $violation1->getPropertyPath()
            ->willReturn('property_path');
        $violation1->getMessage()
            ->willReturn('message');
        $violation2 = $this->prophesize(ConstraintViolationInterface::class);
        $violation2->getPropertyPath()
            ->willReturn('property_path');
        $violation2->getMessage()
            ->willReturn('message');
        $entity = $this->prophesize(User::class);
        $violations = $this->getMockBuilder(EntityConstraintViolationList::class)
            ->setConstructorArgs([
            $entity->reveal(),
            [
                $violation1->reveal(),
                $violation2->reveal(),
            ],
        ])
            ->onlyMethods([
            'filterByFieldAccess',
        ])
            ->getMock();
        $violations->expects($this->once())
            ->method('filterByFieldAccess')
            ->willReturn([]);
        $entity->validate()
            ->willReturn($violations);
        $trait = new EntityResourceValidationTraitTestClass();
        $method = new \ReflectionMethod($trait, 'validate');
        $method->setAccessible(TRUE);
        $this->expectException(UnprocessableEntityHttpException::class);
        $method->invoke($trait, $entity->reveal());
    }

}

/**
 * A test class to use to test EntityResourceValidationTrait.
 *
 * Using ->getMockForTrait is problematic, as this trait is marked internal.
 * Because the mock doesn't use the \Drupal namespace, the Symfony 4+ class
 * loader will throw a deprecation error.
 */
class EntityResourceValidationTraitTestClass {
    use EntityResourceValidationTrait;

}