setupAccessManagerToAllow example

->method('matchRequest')
      ->willReturnCallback(function DRequest $request) use ($route_1) {
        if ($request->getPathInfo() == '/example') {
          return [
            RouteObjectInterface::ROUTE_NAME => 'example',
            RouteObjectInterface::ROUTE_OBJECT => $route_1,
            '_raw_variables' => new InputBag([]),
          ];
        }
      });

    $this->setupAccessManagerToAllow();

    $breadcrumb = $this->builder->build($this->createMock('Drupal\Core\Routing\RouteMatchInterface'));
    $this->assertEquals([0 => new Link('Home', new Url('<front>')), 1 => new Link('Example', new Url('example'))], $breadcrumb->getLinks());
    $this->assertEqualsCanonicalizing([
      'url.path.is_front',
      'url.path.parent',
      'user.permissions',
    ], $breadcrumb->getCacheContexts());
    $this->assertEqualsCanonicalizing([], $breadcrumb->getCacheTags());
    $this->assertEquals(Cache::PERMANENT, $breadcrumb->getCacheMaxAge());
  }