class DisplayTest

class DisplayTest extends ViewTestBase {
    
    /**
     * Views used by this test.
     *
     * @var array
     */
    public static $testViews = [
        'test_filter_groups',
        'test_get_attach_displays',
        'test_view',
        'test_display_more',
        'test_display_invalid',
        'test_display_empty',
        'test_exposed_relationship_admin_ui',
        'test_simple_argument',
    ];
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'views_ui',
        'node',
        'block',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected static $configSchemaCheckerExclusions = [
        // The availability of Views display plugins is validated by the config
        // system, but one of our test cases saves a view with an invalid display
        // plugin ID, to see how Views handles that. Therefore, allow that one view
        // to be saved with an invalid display plugin without angering the config
        // schema checker.
        // @see ::testInvalidDisplayPlugins()
'views.view.test_display_invalid',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp($import_test_views = TRUE, $modules = [
        'views_test_config',
    ]) : void {
        parent::setUp($import_test_views, $modules);
        $this->enableViewsTestModule();
        $this->drupalLogin($this->drupalCreateUser([
            'administer views',
        ]));
        // Create 10 nodes.
        for ($i = 0; $i <= 10; $i++) {
            $this->drupalCreateNode([
                'promote' => TRUE,
            ]);
        }
    }
    
    /**
     * Tests the display test plugin.
     *
     * @see \Drupal\views_test_data\Plugin\views\display\DisplayTest
     */
    public function testDisplayPlugin() : void {
        
        /** @var \Drupal\Core\Render\RendererInterface $renderer */
        $renderer = $this->container
            ->get('renderer');
        $view = Views::getView('test_view');
        // Add a new 'display_test' display and test it's there.
        $view->storage
            ->addDisplay('display_test');
        $displays = $view->storage
            ->get('display');
        $this->assertTrue(isset($displays['display_test_1']), 'Added display has been assigned to "display_test_1"');
        // Check the display options are like expected.
        $options = [
            'display_options' => [],
            'display_plugin' => 'display_test',
            'id' => 'display_test_1',
            'display_title' => 'Display test',
            'position' => 1,
        ];
        $this->assertEquals($options, $displays['display_test_1']);
        // Add another one to ensure that position is counted up.
        $view->storage
            ->addDisplay('display_test');
        $displays = $view->storage
            ->get('display');
        $options = [
            'display_options' => [],
            'display_plugin' => 'display_test',
            'id' => 'display_test_2',
            'display_title' => 'Display test 2',
            'position' => 2,
        ];
        $this->assertEquals($options, $displays['display_test_2']);
        // Move the second display before the first one in order to test custom
        // sorting.
        $displays['display_test_1']['position'] = 2;
        $displays['display_test_2']['position'] = 1;
        $view->storage
            ->set('display', $displays);
        $view->save();
        $view->setDisplay('display_test_1');
        $this->assertInstanceOf(DisplayTestPlugin::class, $view->display_handler);
        // Check the test option.
        $this->assertSame('', $view->display_handler
            ->getOption('test_option'));
        $style = $view->display_handler
            ->getOption('style');
        $style['type'] = 'test_style';
        $view->display_handler
            ->setOption('style', $style);
        $view->initDisplay();
        $view->initStyle();
        $view->style_plugin
            ->setUsesRowPlugin(FALSE);
        $output = $view->preview();
        $output = (string) $renderer->renderRoot($output);
        $this->assertStringContainsString('<h1></h1>', $output, 'An empty value for test_option found in output.');
        // Change this option and check the title of out output.
        $view->display_handler
            ->overrideOption('test_option', 'Test option title');
        $view->save();
        $output = $view->preview();
        $output = (string) $renderer->renderRoot($output);
        // Test we have our custom <h1> tag in the output of the view.
        $this->assertStringContainsString('<h1>Test option title</h1>', $output, 'The test_option value found in display output title.');
        // Test that the display category/summary is in the UI.
        $this->drupalGet('admin/structure/views/view/test_view/edit/display_test_1');
        $this->assertSession()
            ->pageTextContains('Display test settings');
        // Ensure that the order is as expected.
        $result = $this->xpath('//ul[@id="views-display-menu-tabs"]/li/a/child::text()');
        $this->assertEquals('Display test 2', $result[0]->getText());
        $this->assertEquals('Display test', $result[1]->getText());
        $this->clickLink('Test option title');
        $test_option = $this->randomString();
        $this->submitForm([
            'test_option' => $test_option,
        ], 'Apply');
        // Check the new value has been saved by checking the UI summary text.
        $this->drupalGet('admin/structure/views/view/test_view/edit/display_test_1');
        $this->assertSession()
            ->linkExists($test_option);
        // Test the enable/disable status of a display.
        $view->display_handler
            ->setOption('enabled', FALSE);
        $this->assertFalse($view->display_handler
            ->isEnabled(), 'Make sure that isEnabled returns FALSE on a disabled display.');
        $view->display_handler
            ->setOption('enabled', TRUE);
        $this->assertTrue($view->display_handler
            ->isEnabled(), 'Make sure that isEnabled returns TRUE on a disabled display.');
    }
    
    /**
     * Tests the overriding of filter_groups.
     */
    public function testFilterGroupsOverriding() : void {
        $view = Views::getView('test_filter_groups');
        $view->initDisplay();
        // mark is as overridden, yes FALSE, means overridden.
        $view->displayHandlers
            ->get('page')
            ->setOverride('filter_groups', FALSE);
        $this->assertFalse($view->displayHandlers
            ->get('page')
            ->isDefaulted('filter_groups'), "Make sure that 'filter_groups' is marked as overridden.");
        $this->assertFalse($view->displayHandlers
            ->get('page')
            ->isDefaulted('filters'), "Make sure that 'filters'' is marked as overridden.");
    }
    
    /**
     * Tests the getAttachedDisplays method.
     */
    public function testGetAttachedDisplays() : void {
        $view = Views::getView('test_get_attach_displays');
        // Both the feed_1 and the feed_2 display are attached to the page display.
        $view->setDisplay('page_1');
        $this->assertEquals([
            'feed_1',
            'feed_2',
        ], $view->display_handler
            ->getAttachedDisplays());
        $view->setDisplay('feed_1');
        $this->assertEquals([], $view->display_handler
            ->getAttachedDisplays());
    }
    
    /**
     * Tests the readmore validation.
     */
    public function testReadMoreNoDisplay() : void {
        $view = Views::getView('test_display_more');
        // Confirm that the view validates when there is a page display.
        $errors = $view->validate();
        $this->assertEmpty($errors, 'More link validation has no errors.');
        // Confirm that the view does not validate when the page display is disabled.
        $view->setDisplay('page_1');
        $view->display_handler
            ->setOption('enabled', FALSE);
        $view->setDisplay('default');
        $errors = $view->validate();
        $this->assertNotEmpty($errors, 'More link validation has some errors.');
        $this->assertEquals('Display "Default" uses a "more" link but there are no displays it can link to. You need to specify a custom URL.', $errors['default'][0], 'More link validation has the right error.');
        // Confirm that the view does not validate when the page display does not exist.
        $view = Views::getView('test_view');
        $view->setDisplay('default');
        $view->display_handler
            ->setOption('use_more', 1);
        $errors = $view->validate();
        $this->assertNotEmpty($errors, 'More link validation has some errors.');
        $this->assertEquals('Display "Default" uses a "more" link but there are no displays it can link to. You need to specify a custom URL.', $errors['default'][0], 'More link validation has the right error.');
    }
    
    /**
     * Tests the readmore with custom URL.
     */
    public function testReadMoreCustomURL() : void {
        
        /** @var \Drupal\Core\Render\RendererInterface $renderer */
        $renderer = $this->container
            ->get('renderer');
        $view = Views::getView('test_display_more');
        $view->setDisplay('default');
        $view->display_handler
            ->setOption('use_more', 1);
        $view->display_handler
            ->setOption('use_more_always', 1);
        $view->display_handler
            ->setOption('link_display', 'custom_url');
        // Test more link without leading slash.
        $view->display_handler
            ->setOption('link_url', 'node');
        $this->executeView($view);
        $output = $view->preview();
        $output = (string) $renderer->renderRoot($output);
        $this->assertStringContainsString('/node', $output, 'The read more link with href "/node" was found.');
        // Test more link with leading slash.
        $view->display_handler
            ->setOption('link_display', 'custom_url');
        $view->display_handler
            ->setOption('link_url', '/node');
        $this->executeView($view);
        $output = $view->preview();
        $output = (string) $renderer->renderRoot($output);
        $this->assertStringContainsString('/node', $output, 'The read more link with href "/node" was found.');
        // Test more link with absolute URL.
        $view->display_handler
            ->setOption('link_display', 'custom_url');
        $view->display_handler
            ->setOption('link_url', 'http://example.com');
        $this->executeView($view);
        $output = $view->preview();
        $output = (string) $renderer->renderRoot($output);
        $this->assertStringContainsString('http://example.com', $output, 'The read more link with href "http://example.com" was found.');
        // Test more link with query parameters in the URL.
        $view->display_handler
            ->setOption('link_display', 'custom_url');
        $view->display_handler
            ->setOption('link_url', 'node?page=1&foo=bar');
        $this->executeView($view);
        $output = $view->preview();
        $output = (string) $renderer->renderRoot($output);
        $this->assertStringContainsString('/node?page=1&amp;foo=bar', $output, 'The read more link with href "/node?page=1&foo=bar" was found.');
        // Test more link with fragment in the URL.
        $view->display_handler
            ->setOption('link_display', 'custom_url');
        $view->display_handler
            ->setOption('link_url', 'node#target');
        $this->executeView($view);
        $output = $view->preview();
        $output = (string) $renderer->renderRoot($output);
        $this->assertStringContainsString('/node#target', $output, 'The read more link with href "/node#target" was found.');
        // Test more link with arguments.
        $view = Views::getView('test_simple_argument');
        $view->setDisplay('default');
        $view->display_handler
            ->setOption('use_more', 1);
        $view->display_handler
            ->setOption('use_more_always', 1);
        $view->display_handler
            ->setOption('link_display', 'custom_url');
        $view->display_handler
            ->setOption('link_url', 'node?date={{ raw_arguments.age }}&foo=bar');
        $view->setArguments([
            22,
        ]);
        $this->executeView($view);
        $output = $view->preview();
        $output = (string) $renderer->renderRoot($output);
        $this->assertStringContainsString('/node?date=22&amp;foo=bar', $output, 'The read more link with href "/node?date=22&foo=bar" was found.');
        // Test more link with 1 dimension array query parameters with arguments.
        $view = Views::getView('test_simple_argument');
        $view->setDisplay('default');
        $view->display_handler
            ->setOption('use_more', 1);
        $view->display_handler
            ->setOption('use_more_always', 1);
        $view->display_handler
            ->setOption('link_display', 'custom_url');
        $view->display_handler
            ->setOption('link_url', '/node?f[0]=foo:bar&f[1]=foo:{{ raw_arguments.age }}');
        $view->setArguments([
            22,
        ]);
        $this->executeView($view);
        $output = $view->preview();
        $output = (string) $renderer->renderRoot($output);
        $this->assertStringContainsString('/node?f%5B0%5D=foo%3Abar&amp;f%5B1%5D=foo%3A22', $output, 'The read more link with href "/node?f[0]=foo:bar&f[1]=foo:22" was found.');
        // Test more link with arguments in path.
        $view->display_handler
            ->setOption('link_url', 'node/{{ raw_arguments.age }}?date={{ raw_arguments.age }}&foo=bar');
        $view->setArguments([
            22,
        ]);
        $this->executeView($view);
        $output = $view->preview();
        $output = (string) $renderer->renderRoot($output);
        $this->assertStringContainsString('/node/22?date=22&amp;foo=bar', $output, 'The read more link with href "/node/22?date=22&foo=bar" was found.');
        // Test more link with arguments in fragment.
        $view->display_handler
            ->setOption('link_url', 'node?date={{ raw_arguments.age }}&foo=bar#{{ raw_arguments.age }}');
        $view->setArguments([
            22,
        ]);
        $this->executeView($view);
        $output = $view->preview();
        $output = (string) $renderer->renderRoot($output);
        $this->assertStringContainsString('/node?date=22&amp;foo=bar#22', $output, 'The read more link with href "/node?date=22&foo=bar#22" was found.');
    }
    
    /**
     * Tests invalid display plugins.
     */
    public function testInvalidDisplayPlugins() : void {
        $this->drupalGet('test_display_invalid');
        $this->assertSession()
            ->statusCodeEquals(200);
        // Change the page plugin id to an invalid one. Bypass the entity system
        // so no menu rebuild was executed (so the path is still available).
        $config = $this->config('views.view.test_display_invalid');
        $config->set('display.page_1.display_plugin', 'invalid');
        $config->save();
        $this->drupalGet('test_display_invalid');
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains('The "invalid" plugin does not exist.');
        // Rebuild the router, and ensure that the path is not accessible anymore.
        views_invalidate_cache();
        \Drupal::service('router.builder')->rebuildIfNeeded();
        $this->drupalGet('test_display_invalid');
        $this->assertSession()
            ->statusCodeEquals(404);
        // Change the display plugin ID back to the correct ID.
        $config = $this->config('views.view.test_display_invalid');
        $config->set('display.page_1.display_plugin', 'page');
        $config->save();
        // Place the block display.
        $block = $this->drupalPlaceBlock('views_block:test_display_invalid-block_1', [
            'label' => 'Invalid display',
        ]);
        $this->drupalGet('<front>');
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->elementsCount('xpath', "//div[@id = 'block-{$block->id()}']", 1);
        // Change the block plugin ID to an invalid one.
        $config = $this->config('views.view.test_display_invalid');
        $config->set('display.block_1.display_plugin', 'invalid');
        $config->save();
        // Test the page is still displayed, the block not present, and has the
        // plugin warning message.
        $this->drupalGet('<front>');
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->pageTextContains('The "invalid" plugin does not exist.');
        $this->assertSession()
            ->elementNotExists('xpath', "//div[@id = 'block-{$block->id()}']");
    }
    
    /**
     * Tests display validation when a required relationship is missing.
     */
    public function testMissingRelationship() : void {
        $view = Views::getView('test_exposed_relationship_admin_ui');
        // Remove the relationship that is not used by other handlers.
        $view->removeHandler('default', 'relationship', 'uid_1');
        $errors = $view->validate();
        // Check that no error message is shown.
        $this->assertArrayNotHasKey('default', $errors, 'No errors found when removing unused relationship.');
        // Unset cached relationships (see DisplayPluginBase::getHandlers())
        unset($view->display_handler->handlers['relationship']);
        // Remove the relationship used by other handlers.
        $view->removeHandler('default', 'relationship', 'uid');
        // Validate display
        $errors = $view->validate();
        // Check that the error messages are shown.
        $this->assertCount(2, $errors['default'], 'Error messages found for required relationship');
        $this->assertEquals(new FormattableMarkup('The %relationship_name relationship used in %handler_type %handler is not present in the %display_name display.', [
            '%relationship_name' => 'uid',
            '%handler_type' => 'field',
            '%handler' => 'User: Last login',
            '%display_name' => 'Default',
        ]), $errors['default'][0]);
        $this->assertEquals(new FormattableMarkup('The %relationship_name relationship used in %handler_type %handler is not present in the %display_name display.', [
            '%relationship_name' => 'uid',
            '%handler_type' => 'field',
            '%handler' => 'User: Created',
            '%display_name' => 'Default',
        ]), $errors['default'][1]);
    }
    
    /**
     * Tests the outputIsEmpty method on the display.
     */
    public function testOutputIsEmpty() : void {
        $view = Views::getView('test_display_empty');
        $this->executeView($view);
        $this->assertNotEmpty($view->result);
        $this->assertFalse($view->display_handler
            ->outputIsEmpty(), 'Ensure the view output is marked as not empty.');
        $view->destroy();
        // Add a filter, so the view result is empty.
        $view->setDisplay('default');
        $item = [
            'table' => 'views_test_data',
            'field' => 'id',
            'id' => 'id',
            'value' => [
                'value' => 7297,
            ],
        ];
        $view->setHandler('default', 'filter', 'id', $item);
        $this->executeView($view);
        $this->assertEmpty($view->result, 'Ensure the result of the view is empty.');
        $this->assertFalse($view->display_handler
            ->outputIsEmpty(), 'Ensure the view output is marked as not empty, because the empty text still appears.');
        $view->destroy();
        // Remove the empty area, but mark the header area to still appear.
        $view->removeHandler('default', 'empty', 'area');
        $item = $view->getHandler('default', 'header', 'area');
        $item['empty'] = TRUE;
        $view->setHandler('default', 'header', 'area', $item);
        $this->executeView($view);
        $this->assertEmpty($view->result, 'Ensure the result of the view is empty.');
        $this->assertFalse($view->display_handler
            ->outputIsEmpty(), 'Ensure the view output is marked as not empty, because the header text still appears.');
        $view->destroy();
        // Hide the header on empty results.
        $item = $view->getHandler('default', 'header', 'area');
        $item['empty'] = FALSE;
        $view->setHandler('default', 'header', 'area', $item);
        $this->executeView($view);
        $this->assertEmpty($view->result, 'Ensure the result of the view is empty.');
        $this->assertTrue($view->display_handler
            ->outputIsEmpty(), 'Ensure the view output is marked as empty.');
    }
    
    /**
     * Tests translation rendering settings based on entity translatability.
     */
    public function testTranslationSetting() : void {
        \Drupal::service('module_installer')->install([
            'file',
        ]);
        // By default there should be no language settings.
        $this->checkTranslationSetting();
        \Drupal::service('module_installer')->install([
            'language',
        ]);
        // Enabling the language module should not make a difference.
        $this->checkTranslationSetting();
        // Making the site multilingual should let translatable entity types support
        // translation rendering.
        ConfigurableLanguage::createFromLangcode('it')->save();
        $this->checkTranslationSetting(TRUE);
    }
    
    /**
     * Asserts a node and a file based view for the translation setting.
     *
     * The file based view should never expose that setting. The node based view
     * should if the site is multilingual.
     *
     * @param bool $expected_node_translatability
     *   Whether the node based view should be expected to support translation
     *   settings.
     */
    protected function checkTranslationSetting($expected_node_translatability = FALSE) {
        $not_supported_text = 'The view is not based on a translatable entity type or the site is not multilingual.';
        $supported_text = 'All content that supports translations will be displayed in the selected language.';
        $this->drupalGet('admin/structure/views/nojs/display/content/page_1/rendering_language');
        if ($expected_node_translatability) {
            $this->assertSession()
                ->pageTextNotContains($not_supported_text);
            $this->assertSession()
                ->pageTextContains($supported_text);
        }
        else {
            $this->assertSession()
                ->pageTextContains($not_supported_text);
            $this->assertSession()
                ->pageTextNotContains($supported_text);
        }
        $this->drupalGet('admin/structure/views/nojs/display/files/page_1/rendering_language');
        $this->assertSession()
            ->pageTextContains($not_supported_text);
        $this->assertSession()
            ->pageTextNotContains($supported_text);
    }

}