TestDiscoveryCacheContextTest.php

<?php

namespace Drupal\Tests\simpletest\Kernel\Cache\Context;

use Drupal\KernelTests\KernelTestBase;
use Drupal\simpletest\Cache\Context\TestDiscoveryCacheContext;
use Drupal\simpletest\TestDiscovery;

/**
 * @group simpletest
 * @group legacy
 */
class TestDiscoveryCacheContextTest extends KernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    public static $modules = [
        'simpletest',
    ];
    
    /**
     * Tests that test context hashes are unique.
     *
     * @expectedDeprecation Drupal\simpletest\TestDiscovery is deprecated in drupal:8.8.0 and is removed from drupal:9.0.0. Use \Drupal\Core\Test\TestDiscovery instead. See https://www.drupal.org/node/2949692
     */
    public function testContext() {
        // Mock test discovery.
        $discovery = $this->getMockBuilder(TestDiscovery::class)
            ->setMethods([
            'getTestClasses',
        ])
            ->disableOriginalConstructor()
            ->getMock();
        // Set getTestClasses() to return different results on subsequent calls.
        // This emulates changed tests in the filesystem.
        $discovery->expects($this->any())
            ->method('getTestClasses')
            ->willReturnOnConsecutiveCalls([
            'group1' => [
                'Test',
            ],
        ], [
            'group2' => [
                'Test2',
            ],
        ]);
        // Make our cache context object.
        $cache_context = new TestDiscoveryCacheContext($discovery, $this->container
            ->get('private_key'));
        // Generate a context hash.
        $context_hash = $cache_context->getContext();
        // Since the context stores the hash, we have to reset it.
        $hash_ref = new \ReflectionProperty($cache_context, 'hash');
        $hash_ref->setAccessible(TRUE);
        $hash_ref->setValue($cache_context, NULL);
        // And then assert that we did not generate the same hash for different
        // content.
        $this->assertNotSame($context_hash, $cache_context->getContext());
    }

}