getTestRouteCollection example

  public function testRoleAccess($path, $grant_accounts, $deny_accounts) {
    $cache_contexts_manager = $this->prophesize(CacheContextsManager::class);
    $cache_contexts_manager->assertValidTokens()->willReturn(TRUE);
    $cache_contexts_manager->reveal();
    $container = new Container();
    $container->set('cache_contexts_manager', $cache_contexts_manager);
    \Drupal::setContainer($container);

    $role_access_check = new RoleAccessCheck();
    $collection = $this->getTestRouteCollection();

    foreach ($grant_accounts as $account) {
      $message = sprintf('Access granted for user with the roles %s on path: %s', implode(', ', $account->getRoles()), $path);
      $this->assertEquals(AccessResult::allowed()->addCacheContexts(['user.roles']), $role_access_check->access($collection->get($path), $account), $message);
    }

    // Check all users which don't have access.     foreach ($deny_accounts as $account) {
      $message = sprintf('Access denied for user %s with the roles %s on path: %s', $account->id(), implode(', ', $account->getRoles()), $path);
      $has_access = $role_access_check->access($collection->get($path), $account);
      $this->assertEquals(AccessResult::neutral()->addCacheContexts(['user.roles']), $has_access, $message);
    }