RoleExistsConstraintValidatorTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\user\Kernel\Plugin\Validation\Constraint;

use Drupal\Core\TypedData\DataDefinition;
use Drupal\KernelTests\KernelTestBase;
use Drupal\user\Entity\Role;
use Symfony\Component\Validator\Exception\UnexpectedTypeException;

/**
 * @group user
 * @group Validation
 *
 * @covers \Drupal\user\Plugin\Validation\Constraint\RoleExistsConstraint
 * @covers \Drupal\user\Plugin\Validation\Constraint\RoleExistsConstraintValidator
 */
class RoleExistsConstraintValidatorTest extends KernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'system',
        'user',
    ];
    
    /**
     * Tests that the constraint validator will only work with strings.
     */
    public function testValueMustBeAString() : void {
        $definition = DataDefinition::create('any')->addConstraint('RoleExists');
        $this->expectException(UnexpectedTypeException::class);
        $this->expectExceptionMessage('Expected argument of type "string", "int" given');
        $this->container
            ->get('typed_data_manager')
            ->create($definition, 39)
            ->validate();
    }
    
    /**
     * Tests when the constraint's entityTypeId value is not valid.
     */
    public function testRoleExists() : void {
        // Validation error when role does not exist.
        $definition = DataDefinition::create('string')->addConstraint('RoleExists');
        $violations = $this->container
            ->get('typed_data_manager')
            ->create($definition, 'test_role')
            ->validate();
        $this->assertEquals('The role with id \'test_role\' does not exist.', $violations->get(0)
            ->getMessage());
        $this->assertCount(1, $violations);
        // Validation success when role exists.
        Role::create([
            'id' => 'test_role',
            'label' => 'Test role',
        ])->save();
        $definition = DataDefinition::create('string')->addConstraint('RoleExists');
        $violations = $this->container
            ->get('typed_data_manager')
            ->create($definition, 'test_role')
            ->validate();
        $this->assertCount(0, $violations);
    }

}