class ViewsBlockTest

class ViewsBlockTest extends UnitTestCase {
  
  /**
   * The view executable.
   *
   * @var \Drupal\views\ViewExecutable|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $executable;
  
  /**
   * The view executable factory.
   *
   * @var \Drupal\views\ViewExecutableFactory|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $executableFactory;
  
  /**
   * The view entity.
   *
   * @var \Drupal\views\ViewEntityInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $view;
  
  /**
   * The view storage.
   *
   * @var \Drupal\Core\Entity\EntityStorageInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $storage;
  
  /**
   * The mocked user account.
   *
   * @var \Drupal\Core\Session\AccountInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $account;
  
  /**
   * The mocked display handler.
   *
   * @var \Drupal\views\Plugin\views\display\Block|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $displayHandler;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $container = new ContainerBuilder();
    $cache_context_manager = $this->createMock(CacheContextsManager::class);
    $cache_context_manager->expects($this->any())
      ->method('getAll')
      ->willReturn([]);
    $cache_context_manager->expects($this->any())
      ->method('assertValidTokens')
      ->willReturn(TRUE);
    $container->set('cache_contexts_manager', $cache_context_manager);
    $condition_plugin_manager = $this->createMock('Drupal\\Core\\Executable\\ExecutableManagerInterface');
    $condition_plugin_manager->expects($this->any())
      ->method('getDefinitions')
      ->willReturn([]);
    $container->set('plugin.manager.condition', $condition_plugin_manager);
    \Drupal::setContainer($container);
    $this->executable = $this->getMockBuilder('Drupal\\views\\ViewExecutable')
      ->disableOriginalConstructor()
      ->onlyMethods([
      'buildRenderable',
      'setDisplay',
      'setItemsPerPage',
      'getShowAdminLinks',
    ])
      ->getMock();
    $this->executable
      ->expects($this->any())
      ->method('setDisplay')
      ->with('block_1')
      ->willReturn(TRUE);
    $this->executable
      ->expects($this->any())
      ->method('getShowAdminLinks')
      ->willReturn(FALSE);
    $this->executable->display_handler = $this->getMockBuilder('Drupal\\views\\Plugin\\views\\display\\Block')
      ->disableOriginalConstructor()
      ->onlyMethods([
      'getCacheMetadata',
    ])
      ->getMock();
    $this->view = $this->getMockBuilder('Drupal\\views\\Entity\\View')
      ->disableOriginalConstructor()
      ->getMock();
    $this->view
      ->expects($this->any())
      ->method('id')
      ->willReturn('test_view');
    $this->executable->storage = $this->view;
    $this->executableFactory = $this->getMockBuilder('Drupal\\views\\ViewExecutableFactory')
      ->disableOriginalConstructor()
      ->getMock();
    $this->executableFactory
      ->expects($this->any())
      ->method('get')
      ->with($this->view)
      ->willReturn($this->executable);
    $this->displayHandler = $this->getMockBuilder('Drupal\\views\\Plugin\\views\\display\\Block')
      ->disableOriginalConstructor()
      ->getMock();
    $this->displayHandler
      ->expects($this->any())
      ->method('blockSettings')
      ->willReturn([]);
    $this->displayHandler
      ->expects($this->any())
      ->method('getPluginId')
      ->willReturn('block');
    $this->displayHandler
      ->expects($this->any())
      ->method('getHandlers')
      ->willReturn([]);
    $this->executable->display_handler = $this->displayHandler;
    $this->storage = $this->getMockBuilder('Drupal\\Core\\Config\\Entity\\ConfigEntityStorage')
      ->disableOriginalConstructor()
      ->getMock();
    $this->storage
      ->expects($this->any())
      ->method('load')
      ->with('test_view')
      ->willReturn($this->view);
    $this->account = $this->createMock('Drupal\\Core\\Session\\AccountInterface');
  }
  
  /**
   * Tests the build method.
   *
   * @see \Drupal\views\Plugin\block\ViewsBlock::build()
   */
  public function testBuild() : void {
    $output = $this->randomMachineName(100);
    $build = [
      'view_build' => $output,
      '#view_id' => 'test_view',
      '#view_display_plugin_class' => '\\Drupal\\views\\Plugin\\views\\display\\Block',
      '#view_display_show_admin_links' => FALSE,
      '#view_display_plugin_id' => 'block',
      '#pre_rendered' => TRUE,
    ];
    $this->executable
      ->expects($this->once())
      ->method('buildRenderable')
      ->with('block_1', [])
      ->willReturn($build);
    $block_id = 'views_block:test_view-block_1';
    $config = [];
    $definition = [];
    $definition['provider'] = 'views';
    $plugin = new ViewsBlock($config, $block_id, $definition, $this->executableFactory, $this->storage, $this->account);
    $this->assertEquals($build, $plugin->build());
  }
  
  /**
   * Tests that cacheable metadata is retrieved from the view and merged with block cacheable metadata.
   *
   * @dataProvider providerTestCacheableMetadata
   *
   * @see \Drupal\views\Plugin\block\ViewsBlock::build()
   */
  public function testCacheableMetadata(int $blockCacheMaxAge, int $viewCacheMaxAge, int $expectedCacheMaxAge) : void {
    $blockCacheTags = [
      'block-cachetag-1',
      'block-cachetag-2',
    ];
    $blockCacheContexts = [
      'block-cache-context-1',
      'block-cache-context-2',
    ];
    $viewCacheTags = [
      'view-cachetag-1',
      'view-cachetag-2',
    ];
    $viewCacheContexts = [
      'view-cache-context-1',
      'view-cache-context-2',
    ];
    // Mock view cache metadata.
    $viewCacheMetadata = $this->createMock(CacheableMetadata::class);
    $viewCacheMetadata->method('getCacheTags')
      ->willReturn($viewCacheTags);
    $viewCacheMetadata->method('getCacheContexts')
      ->willReturn($viewCacheContexts);
    $viewCacheMetadata->method('getCacheMaxAge')
      ->willReturn($viewCacheMaxAge);
    $this->executable->display_handler
      ->method('getCacheMetadata')
      ->willReturn($viewCacheMetadata);
    // Mock block context.
    $blockContext = $this->createMock(ContextInterface::class);
    $blockContext->method('getCacheTags')
      ->willReturn($blockCacheTags);
    $blockContext->method('getCacheContexts')
      ->willReturn($blockCacheContexts);
    $blockContext->method('getCacheMaxAge')
      ->willReturn($blockCacheMaxAge);
    // Create the views block.
    $block_id = 'views_block:test_view-block_1';
    $config = [];
    $definition = [
      'provider' => 'views',
    ];
    $plugin = new ViewsBlock($config, $block_id, $definition, $this->executableFactory, $this->storage, $this->account);
    $plugin->setContext('context_name', $blockContext);
    // Assertions.
    $this->assertEmpty(array_diff(Cache::mergeTags($viewCacheTags, $blockCacheTags), $plugin->getCacheTags()));
    $this->assertEmpty(array_diff(Cache::mergeContexts($viewCacheContexts, $blockCacheContexts), $plugin->getCacheContexts()));
    $this->assertEquals($expectedCacheMaxAge, $plugin->getCacheMaxAge());
  }
  
  /**
   * Data provider for ::testCacheableMetadata()
   */
  public static function providerTestCacheableMetadata() : array {
    return [
      'View expires before' => [
        500,
        1000,
        500,
      ],
      'Block expires before' => [
        1000,
        500,
        500,
      ],
      'Only block is permanent' => [
        Cache::PERMANENT,
        500,
        500,
      ],
      'Only view is permanent' => [
        500,
        Cache::PERMANENT,
        500,
      ],
      'Both view and block are permanent' => [
        Cache::PERMANENT,
        Cache::PERMANENT,
        Cache::PERMANENT,
      ],
    ];
  }
  
  /**
   * Tests the build method.
   *
   * @covers ::build
   */
  public function testBuildEmpty() : void {
    $build = [
      'view_build' => [],
      '#view_id' => 'test_view',
      '#view_display_plugin_class' => '\\Drupal\\views\\Plugin\\views\\display\\Block',
      '#view_display_show_admin_links' => FALSE,
      '#view_display_plugin_id' => 'block',
      '#pre_rendered' => TRUE,
      '#cache' => [
        'contexts' => [
          'user',
        ],
      ],
    ];
    $this->executable
      ->expects($this->once())
      ->method('buildRenderable')
      ->with('block_1', [])
      ->willReturn($build);
    $block_id = 'views_block:test_view-block_1';
    $config = [];
    $definition = [];
    $definition['provider'] = 'views';
    $plugin = new ViewsBlock($config, $block_id, $definition, $this->executableFactory, $this->storage, $this->account);
    $this->assertEquals(array_intersect_key($build, [
      '#cache' => TRUE,
    ]), $plugin->build());
  }
  
  /**
   * Tests the build method with a failed execution.
   *
   * @see \Drupal\views\Plugin\block\ViewsBlock::build()
   */
  public function testBuildFailed() : void {
    $output = FALSE;
    $this->executable
      ->expects($this->once())
      ->method('buildRenderable')
      ->with('block_1', [])
      ->willReturn($output);
    $block_id = 'views_block:test_view-block_1';
    $config = [];
    $definition = [];
    $definition['provider'] = 'views';
    $plugin = new ViewsBlock($config, $block_id, $definition, $this->executableFactory, $this->storage, $this->account);
    $this->assertEquals([], $plugin->build());
  }

}