class CacheCollectorTest

class CacheCollectorTest extends KernelTestBase {
  
  /**
   * {@inheritdoc}
   */
  public function register(ContainerBuilder $container) {
    parent::register($container);
    // Change container to database cache backends.
    $container->register('cache_factory', 'Drupal\\Core\\Cache\\CacheFactory')
      ->addArgument(new Reference('settings'))
      ->addMethodCall('setContainer', [
      new Reference('service_container'),
    ]);
    // Change container to use database lock backends.
    $container->register('lock', 'Drupal\\Core\\Lock\\DatabaseLockBackend')
      ->addArgument(new Reference('database'));
  }
  
  /**
   * Tests setting and invalidating.
   *
   * @dataProvider providerTestInvalidCharacters
   */
  public function testCacheCollector($cid, $key, $value) {
    $collector = new CacheCollectorHelper($cid, $this->container
      ->get('cache.default'), $this->container
      ->get('lock'));
    $this->assertNull($collector->get($key));
    $collector->set($key, $value);
    $this->assertEquals($value, $collector->get($key));
    $collector->destruct();
    // @todo Shouldn't this be empty after destruction?
    $this->assertEquals($value, $collector->get($key));
  }
  
  /**
   * Data provider for ::testCacheCollector().
   */
  public function providerTestInvalidCharacters() {
    return [
      // Nothing special.
[
        'foo',
        'bar',
        'baz',
      ],
      // Invalid characters in CID.
      // cSpell:disable-next-line
[
        'éøïвβ中國書۞',
        'foo',
        'bar',
      ],
      // Really long CID.
[
        $this->randomString(1024),
        'foo',
        'bar',
      ],
    ];
  }

}