class DisplayBlockTest

class DisplayBlockTest extends ViewTestBase {
    use AssertPageCacheContextsAndTagsTrait;
    use AssertBlockAppearsTrait;
    
    /**
     * Modules to install.
     *
     * @var array
     */
    protected static $modules = [
        'node',
        'block_test_views',
        'test_page_test',
        'contextual',
        'views_ui',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Views used by this test.
     *
     * @var array
     */
    public static $testViews = [
        'test_view_block',
        'test_view_block2',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp($import_test_views = TRUE, $modules = [
        'block_test_views',
    ]) : void {
        parent::setUp($import_test_views, $modules);
        $this->enableViewsTestModule();
    }
    
    /**
     * Tests default and custom block categories.
     */
    public function testBlockCategory() {
        $this->drupalLogin($this->drupalCreateUser([
            'administer views',
            'administer blocks',
        ]));
        // Create a new view in the UI.
        $edit = [];
        $edit['label'] = $this->randomString();
        $edit['id'] = strtolower($this->randomMachineName());
        $edit['show[wizard_key]'] = 'standard:views_test_data';
        $edit['description'] = $this->randomString();
        $edit['block[create]'] = TRUE;
        $edit['block[style][row_plugin]'] = 'fields';
        $this->drupalGet('admin/structure/views/add');
        $this->submitForm($edit, 'Save and edit');
        $pattern = '//tr[.//td[text()=:category] and .//td//a[contains(@href, :href)]]';
        $arguments = [
            ':href' => Url::fromRoute('block.admin_add', [
                'plugin_id' => 'views_block:' . $edit['id'] . '-block_1',
                'theme' => 'stark',
            ])->toString(),
            ':category' => 'Lists (Views)',
        ];
        // Test that the block was given a default category corresponding to its
        // base table.
        $this->drupalGet('admin/structure/block');
        $this->clickLink('Place block');
        $this->assertSession()
            ->elementExists('xpath', $this->assertSession()
            ->buildXPathQuery($pattern, $arguments));
        // Duplicate the block before changing the category.
        $this->drupalGet('admin/structure/views/view/' . $edit['id'] . '/edit/block_1');
        $this->submitForm([], 'Duplicate Block');
        $this->assertSession()
            ->addressEquals('admin/structure/views/view/' . $edit['id'] . '/edit/block_2');
        // Change the block category to a random string.
        $this->drupalGet('admin/structure/views/view/' . $edit['id'] . '/edit/block_1');
        $this->assertSession()
            ->elementTextEquals('named', [
            'id',
            'views-block-1-block-category',
        ], 'Lists (Views)');
        $this->clickLink('Lists (Views)');
        $category = $this->randomString();
        $this->submitForm([
            'block_category' => $category,
        ], 'Apply');
        // Duplicate the block after changing the category.
        $this->submitForm([], 'Duplicate Block');
        $this->assertSession()
            ->addressEquals('admin/structure/views/view/' . $edit['id'] . '/edit/block_3');
        $this->submitForm([], 'Save');
        // Test that the blocks are listed under the correct categories.
        $arguments[':category'] = $category;
        $this->drupalGet('admin/structure/block');
        $this->clickLink('Place block');
        $this->assertSession()
            ->elementExists('xpath', $this->assertSession()
            ->buildXPathQuery($pattern, $arguments));
        // Test that the first duplicated test block remains in the original
        // category.
        $arguments = [
            ':href' => Url::fromRoute('block.admin_add', [
                'plugin_id' => 'views_block:' . $edit['id'] . '-block_2',
                'theme' => 'stark',
            ])->toString(),
            ':category' => 'Lists (Views)',
        ];
        $this->assertSession()
            ->elementExists('xpath', $this->assertSession()
            ->buildXPathQuery($pattern, $arguments));
        // Test that the second duplicated test block appears in the custom
        // category.
        $arguments = [
            ':href' => Url::fromRoute('block.admin_add', [
                'plugin_id' => 'views_block:' . $edit['id'] . '-block_3',
                'theme' => 'stark',
            ])->toString(),
            ':category' => $category,
        ];
        $this->assertSession()
            ->elementExists('xpath', $this->assertSession()
            ->buildXPathQuery($pattern, $arguments));
    }
    
    /**
     * Tests removing a block display.
     */
    public function testDeleteBlockDisplay() {
        // To test all combinations possible we first place create two instances
        // of the block display of the first view.
        $block_1 = $this->drupalPlaceBlock('views_block:test_view_block-block_1', [
            'label' => 'test_view_block-block_1:1',
        ]);
        $block_2 = $this->drupalPlaceBlock('views_block:test_view_block-block_1', [
            'label' => 'test_view_block-block_1:2',
        ]);
        // Then we add one instance of blocks for each of the two displays of the
        // second view.
        $block_3 = $this->drupalPlaceBlock('views_block:test_view_block2-block_1', [
            'label' => 'test_view_block2-block_1',
        ]);
        $block_4 = $this->drupalPlaceBlock('views_block:test_view_block2-block_2', [
            'label' => 'test_view_block2-block_2',
        ]);
        $this->drupalGet('test-page');
        $this->assertBlockAppears($block_1);
        $this->assertBlockAppears($block_2);
        $this->assertBlockAppears($block_3);
        $this->assertBlockAppears($block_4);
        $block_storage = $this->container
            ->get('entity_type.manager')
            ->getStorage('block');
        // Remove the block display, so both block entities from the first view
        // should both disappear.
        $view = Views::getView('test_view_block');
        $view->initDisplay();
        $view->displayHandlers
            ->remove('block_1');
        $view->storage
            ->save();
        $this->assertNull($block_storage->load($block_1->id()), 'The block for this display was removed.');
        $this->assertNull($block_storage->load($block_2->id()), 'The block for this display was removed.');
        $this->assertNotEmpty($block_storage->load($block_3->id()), 'A block from another view was unaffected.');
        $this->assertNotEmpty($block_storage->load($block_4->id()), 'A block from another view was unaffected.');
        $this->drupalGet('test-page');
        $this->assertNoBlockAppears($block_1);
        $this->assertNoBlockAppears($block_2);
        $this->assertBlockAppears($block_3);
        $this->assertBlockAppears($block_4);
        // Remove the first block display of the second view and ensure the block
        // instance of the second block display still exists.
        $view = Views::getView('test_view_block2');
        $view->initDisplay();
        $view->displayHandlers
            ->remove('block_1');
        $view->storage
            ->save();
        $this->assertNull($block_storage->load($block_3->id()), 'The block for this display was removed.');
        $this->assertNotEmpty($block_storage->load($block_4->id()), 'A block from another display on the same view was unaffected.');
        $this->drupalGet('test-page');
        $this->assertNoBlockAppears($block_3);
        $this->assertBlockAppears($block_4);
    }
    
    /**
     * Tests the block form for a Views block.
     */
    public function testViewsBlockForm() {
        $this->drupalLogin($this->drupalCreateUser([
            'administer blocks',
        ]));
        $default_theme = $this->config('system.theme')
            ->get('default');
        $this->drupalGet('admin/structure/block/add/views_block:test_view_block-block_1/' . $default_theme);
        $this->assertSession()
            ->fieldNotExists('label');
        // Test that the machine name field is hidden from display and has been
        // saved as expected from the default value.
        $this->assertSession()
            ->fieldNotExists('edit-machine-name', NULL);
        // Save the block.
        $edit = [
            'region' => 'content',
        ];
        $this->submitForm($edit, 'Save block');
        $storage = $this->container
            ->get('entity_type.manager')
            ->getStorage('block');
        $block = $storage->load('views_block__test_view_block_block_1');
        // This will only return a result if our new block has been created with the
        // expected machine name.
        $this->assertNotEmpty($block, 'The expected block was loaded.');
        for ($i = 2; $i <= 3; $i++) {
            // Place the same block again and make sure we have a new ID.
            $this->drupalGet('admin/structure/block/add/views_block:test_view_block-block_1/' . $default_theme);
            $this->submitForm($edit, 'Save block');
            $block = $storage->load('views_block__test_view_block_block_1_' . $i);
            // This will only return a result if our new block has been created with the
            // expected machine name.
            $this->assertNotEmpty($block, 'The expected block was loaded.');
        }
        // Tests the override capability of items per page.
        $this->drupalGet('admin/structure/block/add/views_block:test_view_block-block_1/' . $default_theme);
        $edit = [
            'region' => 'content',
        ];
        $edit['settings[override][items_per_page]'] = 10;
        $this->drupalGet('admin/structure/block/add/views_block:test_view_block-block_1/' . $default_theme);
        $this->submitForm($edit, 'Save block');
        $block = $storage->load('views_block__test_view_block_block_1_4');
        $config = $block->getPlugin()
            ->getConfiguration();
        $this->assertEquals(10, $config['items_per_page'], "'Items per page' is properly saved.");
        $edit['settings[override][items_per_page]'] = 5;
        $this->drupalGet('admin/structure/block/manage/views_block__test_view_block_block_1_4');
        $this->submitForm($edit, 'Save block');
        $block = $storage->load('views_block__test_view_block_block_1_4');
        $config = $block->getPlugin()
            ->getConfiguration();
        $this->assertEquals(5, $config['items_per_page'], "'Items per page' is properly saved.");
        // Tests the override of the label capability.
        $edit = [
            'region' => 'content',
        ];
        $edit['settings[views_label_checkbox]'] = 1;
        $edit['settings[views_label]'] = 'Custom title';
        $this->drupalGet('admin/structure/block/add/views_block:test_view_block-block_1/' . $default_theme);
        $this->submitForm($edit, 'Save block');
        $block = $storage->load('views_block__test_view_block_block_1_5');
        $config = $block->getPlugin()
            ->getConfiguration();
        $this->assertEquals('Custom title', $config['views_label'], "'Label' is properly saved.");
    }
    
    /**
     * Tests the actual rendering of the views block.
     */
    public function testBlockRendering() {
        // Create a block and set a custom title.
        $block = $this->drupalPlaceBlock('views_block:test_view_block-block_1', [
            'label' => 'test_view_block-block_1:1',
            'views_label' => 'Custom title',
            'region' => 'sidebar_first',
        ]);
        $block_title_xpath = $this->assertSession()
            ->buildXPathQuery('//aside[contains(@class, "layout-sidebar-first")]//div[@id = :id]/h2', [
            ':id' => 'block-' . $block->id(),
        ]);
        $this->drupalGet('');
        $this->assertSession()
            ->elementTextEquals('xpath', $block_title_xpath, 'Custom title');
        // Don't override the title anymore.
        $plugin = $block->getPlugin();
        $plugin->setConfigurationValue('views_label', '');
        $block->save();
        $this->drupalGet('');
        $this->assertSession()
            ->elementTextEquals('xpath', $block_title_xpath, 'test_view_block');
        // Hide the title.
        $block->getPlugin()
            ->setConfigurationValue('label_display', FALSE);
        $block->save();
        $this->drupalGet('');
        $this->assertSession()
            ->elementNotExists('xpath', $block_title_xpath);
        $this->assertCacheTags(array_merge($block->getCacheTags(), [
            'block_view',
            'config:block_list',
            'config:system.site',
            'config:views.view.test_view_block',
            'http_response',
            'rendered',
        ]));
    }
    
    /**
     * Tests the various testcases of empty block rendering.
     */
    public function testBlockEmptyRendering() {
        $url = new Url('test_page_test.test_page');
        // Remove all views_test_data entries.
        \Drupal::database()->truncate('views_test_data')
            ->execute();
        
        /** @var \Drupal\views\ViewEntityInterface $view */
        $view = View::load('test_view_block');
        $view->invalidateCaches();
        $block = $this->drupalPlaceBlock('views_block:test_view_block-block_1', [
            'label' => 'test_view_block-block_1:1',
            'views_label' => 'Custom title',
        ]);
        $block_xpath = $this->assertSession()
            ->buildXPathQuery('//div[@id = :id]', [
            ':id' => 'block-' . $block->id(),
        ]);
        $this->drupalGet('');
        $this->assertSession()
            ->elementsCount('xpath', $block_xpath, 1);
        $display =& $view->getDisplay('block_1');
        $display['display_options']['block_hide_empty'] = TRUE;
        $view->save();
        $this->drupalGet($url);
        $this->assertSession()
            ->elementNotExists('xpath', $block_xpath);
        // Ensure that the view cacheability metadata is propagated even, for an
        // empty block.
        $this->assertCacheTags(array_merge($block->getCacheTags(), [
            'block_view',
            'config:block_list',
            'config:views.view.test_view_block',
            'http_response',
            'rendered',
        ]));
        $this->assertCacheContexts([
            'url.query_args:_wrapper_format',
        ]);
        // Add a header displayed on empty result.
        $display =& $view->getDisplay('block_1');
        $display['display_options']['defaults']['header'] = FALSE;
        $display['display_options']['header']['example'] = [
            'field' => 'area_text_custom',
            'id' => 'area_text_custom',
            'table' => 'views',
            'plugin_id' => 'text_custom',
            'content' => 'test header',
            'empty' => TRUE,
        ];
        $view->save();
        $this->drupalGet($url);
        $this->assertSession()
            ->elementsCount('xpath', $block_xpath, 1);
        $this->assertCacheTags(array_merge($block->getCacheTags(), [
            'block_view',
            'config:block_list',
            'config:views.view.test_view_block',
            'http_response',
            'rendered',
        ]));
        $this->assertCacheContexts([
            'url.query_args:_wrapper_format',
        ]);
        // Hide the header on empty results.
        $display =& $view->getDisplay('block_1');
        $display['display_options']['defaults']['header'] = FALSE;
        $display['display_options']['header']['example'] = [
            'field' => 'area_text_custom',
            'id' => 'area_text_custom',
            'table' => 'views',
            'plugin_id' => 'text_custom',
            'content' => 'test header',
            'empty' => FALSE,
        ];
        $view->save();
        $this->drupalGet($url);
        $this->assertSession()
            ->elementNotExists('xpath', $block_xpath);
        $this->assertCacheTags(array_merge($block->getCacheTags(), [
            'block_view',
            'config:block_list',
            'config:views.view.test_view_block',
            'http_response',
            'rendered',
        ]));
        $this->assertCacheContexts([
            'url.query_args:_wrapper_format',
        ]);
        // Add an empty text.
        $display =& $view->getDisplay('block_1');
        $display['display_options']['defaults']['empty'] = FALSE;
        $display['display_options']['empty']['example'] = [
            'field' => 'area_text_custom',
            'id' => 'area_text_custom',
            'table' => 'views',
            'plugin_id' => 'text_custom',
            'content' => 'test empty',
        ];
        $view->save();
        $this->drupalGet($url);
        $this->assertSession()
            ->elementsCount('xpath', $block_xpath, 1);
        $this->assertCacheTags(array_merge($block->getCacheTags(), [
            'block_view',
            'config:block_list',
            'config:views.view.test_view_block',
            'http_response',
            'rendered',
        ]));
        $this->assertCacheContexts([
            'url.query_args:_wrapper_format',
        ]);
    }
    
    /**
     * Tests the contextual links on a Views block.
     */
    public function testBlockContextualLinks() {
        $this->drupalLogin($this->drupalCreateUser([
            'administer views',
            'access contextual links',
            'administer blocks',
        ]));
        $block = $this->drupalPlaceBlock('views_block:test_view_block-block_1');
        $cached_block = $this->drupalPlaceBlock('views_block:test_view_block-block_1');
        $this->drupalGet('test-page');
        $id = 'block:block=' . $block->id() . ':langcode=en|entity.view.edit_form:view=test_view_block:location=block&name=test_view_block&display_id=block_1&langcode=en';
        $id_token = Crypt::hmacBase64($id, Settings::getHashSalt() . $this->container
            ->get('private_key')
            ->get());
        $cached_id = 'block:block=' . $cached_block->id() . ':langcode=en|entity.view.edit_form:view=test_view_block:location=block&name=test_view_block&display_id=block_1&langcode=en';
        $cached_id_token = Crypt::hmacBase64($cached_id, Settings::getHashSalt() . $this->container
            ->get('private_key')
            ->get());
        // @see \Drupal\contextual\Tests\ContextualDynamicContextTest:assertContextualLinkPlaceHolder()
        // Check existence of the contextual link placeholders.
        $this->assertSession()
            ->responseContains('<div' . new Attribute([
            'data-contextual-id' => $id,
            'data-contextual-token' => $id_token,
        ]) . '></div>');
        $this->assertSession()
            ->responseContains('<div' . new Attribute([
            'data-contextual-id' => $cached_id,
            'data-contextual-token' => $cached_id_token,
        ]) . '></div>');
        // Get server-rendered contextual links.
        // @see \Drupal\contextual\Tests\ContextualDynamicContextTest:renderContextualLinks()
        $post = [
            'ids[0]' => $id,
            'ids[1]' => $cached_id,
            'tokens[0]' => $id_token,
            'tokens[1]' => $cached_id_token,
        ];
        $url = 'contextual/render?_format=json,destination=test-page';
        $this->getSession()
            ->getDriver()
            ->getClient()
            ->request('POST', $url, $post);
        $this->assertSession()
            ->statusCodeEquals(200);
        $json = Json::decode($this->getSession()
            ->getPage()
            ->getContent());
        $this->assertSame('<ul class="contextual-links"><li><a href="' . base_path() . 'admin/structure/block/manage/' . $block->id() . '">Configure block</a></li><li><a href="' . base_path() . 'admin/structure/block/manage/' . $block->id() . '/delete">Remove block</a></li><li><a href="' . base_path() . 'admin/structure/views/view/test_view_block/edit/block_1">Edit view</a></li></ul>', $json[$id]);
        $this->assertSame('<ul class="contextual-links"><li><a href="' . base_path() . 'admin/structure/block/manage/' . $cached_block->id() . '">Configure block</a></li><li><a href="' . base_path() . 'admin/structure/block/manage/' . $cached_block->id() . '/delete">Remove block</a></li><li><a href="' . base_path() . 'admin/structure/views/view/test_view_block/edit/block_1">Edit view</a></li></ul>', $json[$cached_id]);
    }

}