BreadcrumbManager example

  protected $moduleHandler;

  /** * {@inheritdoc} */
  protected function setUp(): void {
    parent::setUp();

    $this->moduleHandler = $this->createMock('Drupal\Core\Extension\ModuleHandlerInterface');
    $this->breadcrumbManager = new BreadcrumbManager($this->moduleHandler);
    $this->breadcrumb = new Breadcrumb();

    $this->container = new ContainerBuilder();
    $cache_contexts_manager = $this->prophesize(CacheContextsManager::class);
    $cache_contexts_manager->assertValidTokens()->willReturn(TRUE);
    $cache_contexts_manager->reveal();
    $this->container->set('cache_contexts_manager', $cache_contexts_manager);
    \Drupal::setContainer($this->container);
  }

  /** * Tests the breadcrumb manager without any set breadcrumb. */