ContextDefinitionTest.php

<?php

namespace Drupal\KernelTests\Core\Plugin\Annotation;

use Drupal\Core\Plugin\Context\ContextDefinition;
use Drupal\KernelTests\KernelTestBase;

/**
 * @coversDefaultClass \Drupal\Core\Annotation\ContextDefinition
 * @group Plugin
 */
class ContextDefinitionTest extends KernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'block_test',
    ];
    
    /**
     * Tests adding constraints via annotations.
     */
    public function testConstraints() {
        $definition = $this->container
            ->get('plugin.manager.block')
            ->getDefinition('test_context_aware');
        $this->assertArrayHasKey('context_definitions', $definition);
        $this->assertArrayHasKey('user', $definition['context_definitions']);
        $this->assertInstanceOf(ContextDefinition::class, $definition['context_definitions']['user']);
        $this->assertEquals([
            'NotNull' => [],
        ], $definition['context_definitions']['user']->getConstraints());
        $this->assertEquals("User Context", $definition['context_definitions']['user']->getLabel());
    }

}