CacheTagsInvalidatorTest.php

<?php

namespace Drupal\Tests\Core\Cache;

use Drupal\Core\Cache\CacheTagsInvalidator;
use Drupal\Core\DependencyInjection\Container;
use Drupal\Tests\UnitTestCase;

/**
 * @coversDefaultClass \Drupal\Core\Cache\CacheTagsInvalidator
 * @group Cache
 */
class CacheTagsInvalidatorTest extends UnitTestCase {
    
    /**
     * @covers ::invalidateTags
     */
    public function testInvalidateTagsWithInvalidTags() {
        $cache_tags_invalidator = new CacheTagsInvalidator();
        $this->expectException(\AssertionError::class);
        $cache_tags_invalidator->invalidateTags([
            'node' => [
                2,
                3,
                5,
                8,
                13,
            ],
        ]);
    }
    
    /**
     * @covers ::invalidateTags
     * @covers ::addInvalidator
     */
    public function testInvalidateTags() {
        $cache_tags_invalidator = new CacheTagsInvalidator();
        // This does not actually implement,
        // \Drupal\Cache\Cache\CacheBackendInterface but we can not mock from two
        // interfaces, we would need a test class for that.
        $invalidator_cache_bin = $this->createMock('\\Drupal\\Core\\Cache\\CacheTagsInvalidator');
        $invalidator_cache_bin->expects($this->once())
            ->method('invalidateTags')
            ->with([
            'node:1',
        ]);
        // We do not have to define that invalidateTags() is never called as the
        // interface does not define that method, trying to call it would result in
        // a fatal error.
        $non_invalidator_cache_bin = $this->createMock('\\Drupal\\Core\\Cache\\CacheBackendInterface');
        $container = new Container();
        $container->set('cache.invalidator_cache_bin', $invalidator_cache_bin);
        $container->set('cache.non_invalidator_cache_bin', $non_invalidator_cache_bin);
        $container->setParameter('cache_bins', [
            'cache.invalidator_cache_bin' => 'invalidator_cache_bin',
            'cache.non_invalidator_cache_bin' => 'non_invalidator_cache_bin',
        ]);
        $cache_tags_invalidator->setContainer($container);
        $invalidator = $this->createMock('\\Drupal\\Core\\Cache\\CacheTagsInvalidator');
        $invalidator->expects($this->once())
            ->method('invalidateTags')
            ->with([
            'node:1',
        ]);
        $cache_tags_invalidator->addInvalidator($invalidator);
        $cache_tags_invalidator->invalidateTags([
            'node:1',
        ]);
    }

}