class UserRolesAccessPolicyTest

class UserRolesAccessPolicyTest extends UnitTestCase {
  
  /**
   * The access policy to test.
   *
   * @var \Drupal\Core\Session\UserRolesAccessPolicy
   */
  protected $accessPolicy;
  
  /**
   * The mocked entity type manager service.
   *
   * @var \Drupal\Core\Entity\EntityTypeManagerInterface|\Prophecy\Prophecy\ObjectProphecy
   */
  protected $entityTypeManager;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->entityTypeManager = $this->prophesize(EntityTypeManagerInterface::class);
    $this->accessPolicy = new UserRolesAccessPolicy($this->entityTypeManager
      ->reveal());
    $cache_context_manager = $this->prophesize(CacheContextsManager::class);
    $cache_context_manager->assertValidTokens(Argument::any())
      ->willReturn(TRUE);
    $container = $this->prophesize(ContainerInterface::class);
    $container->get('cache_contexts_manager')
      ->willReturn($cache_context_manager->reveal());
    \Drupal::setContainer($container->reveal());
  }
  
  /**
   * @covers ::applies
   */
  public function testApplies() : void {
    $this->assertTrue($this->accessPolicy
      ->applies(AccessPolicyInterface::SCOPE_DRUPAL));
    $this->assertFalse($this->accessPolicy
      ->applies('another scope'));
    $this->assertFalse($this->accessPolicy
      ->applies($this->randomString()));
  }
  
  /**
   * Tests the calculatePermissions method.
   *
   * @param array $roles
   *   The roles to grant the account.
   * @param bool $expect_admin_rights
   *   Whether to expect admin rights to be granted.
   *
   * @covers ::calculatePermissions
   * @dataProvider calculatePermissionsProvider
   */
  public function testCalculatePermissions(array $roles, bool $expect_admin_rights) : void {
    $account = $this->prophesize(AccountInterface::class);
    $account->getRoles()
      ->willReturn(array_keys($roles));
    $total_permissions = $cache_tags = $mocked_roles = [];
    foreach ($roles as $role_id => $role) {
      $total_permissions = array_merge($total_permissions, $role['permissions']);
      $cache_tags[] = "config:user.role.{$role_id}";
      $mocked_role = $this->prophesize(RoleInterface::class);
      $mocked_role->getPermissions()
        ->willReturn($role['permissions']);
      $mocked_role->isAdmin()
        ->willReturn($role['is_admin']);
      $mocked_role->getCacheTags()
        ->willReturn([
        "config:user.role.{$role_id}",
      ]);
      $mocked_role->getCacheContexts()
        ->willReturn([]);
      $mocked_role->getCacheMaxAge()
        ->willReturn(Cache::PERMANENT);
      $mocked_roles[$role_id] = $mocked_role->reveal();
    }
    $role_storage = $this->prophesize(RoleStorageInterface::class);
    $role_storage->loadMultiple(array_keys($roles))
      ->willReturn($mocked_roles);
    $this->entityTypeManager
      ->getStorage('user_role')
      ->willReturn($role_storage->reveal());
    $calculated_permissions = $this->accessPolicy
      ->calculatePermissions($account->reveal(), AccessPolicyInterface::SCOPE_DRUPAL);
    if (!empty($roles)) {
      $this->assertCount(1, $calculated_permissions->getItems(), 'Only one calculated permissions item was added.');
      $item = $calculated_permissions->getItem();
      if ($expect_admin_rights) {
        $this->assertSame([], $item->getPermissions());
        $this->assertTrue($item->isAdmin());
      }
      else {
        $this->assertSame($total_permissions, $item->getPermissions());
        $this->assertFalse($item->isAdmin());
      }
    }
    $this->assertSame($cache_tags, $calculated_permissions->getCacheTags());
    $this->assertSame([
      'user.roles',
    ], $calculated_permissions->getCacheContexts());
    $this->assertSame(Cache::PERMANENT, $calculated_permissions->getCacheMaxAge());
  }
  
  /**
   * Data provider for testCalculatePermissions.
   *
   * @return array
   *   A list of test scenarios.
   */
  public static function calculatePermissionsProvider() : array {
    $cases['no-roles'] = [
      'roles' => [],
      'expect_admin_rights' => FALSE,
    ];
    $cases['some-roles'] = [
      'roles' => [
        'role_foo' => [
          'permissions' => [
            'foo',
          ],
          'is_admin' => FALSE,
        ],
        'role_bar' => [
          'permissions' => [
            'bar',
          ],
          'is_admin' => FALSE,
        ],
      ],
      'expect_admin_rights' => FALSE,
    ];
    $cases['admin-role'] = [
      'roles' => [
        'role_foo' => [
          'permissions' => [
            'foo',
          ],
          'is_admin' => FALSE,
        ],
        'role_bar' => [
          'permissions' => [
            'bar',
          ],
          'is_admin' => TRUE,
        ],
      ],
      'expect_admin_rights' => TRUE,
    ];
    return $cases;
  }
  
  /**
   * Tests the alterPermissions method.
   *
   * @covers ::alterPermissions
   */
  public function testAlterPermissions() : void {
    $account = $this->prophesize(AccountInterface::class);
    $calculated_permissions = new RefinableCalculatedPermissions();
    $calculated_permissions->addItem(new CalculatedPermissionsItem([
      'foo',
    ]));
    $calculated_permissions->addCacheTags([
      'bar',
    ]);
    $calculated_permissions->addCacheContexts([
      'baz',
    ]);
    $this->accessPolicy
      ->alterPermissions($account->reveal(), AccessPolicyInterface::SCOPE_DRUPAL, $calculated_permissions);
    $this->assertSame([
      'foo',
    ], $calculated_permissions->getItem()
      ->getPermissions());
    $this->assertSame([
      'bar',
    ], $calculated_permissions->getCacheTags());
    $this->assertSame([
      'baz',
    ], $calculated_permissions->getCacheContexts());
  }
  
  /**
   * Tests the getPersistentCacheContexts method.
   *
   * @covers ::getPersistentCacheContexts
   */
  public function testGetPersistentCacheContexts() : void {
    $this->assertSame([
      'user.roles',
    ], $this->accessPolicy
      ->getPersistentCacheContexts(AccessPolicyInterface::SCOPE_DRUPAL));
  }

}