Version 1
[yaffs-website] / web / core / modules / filter / tests / src / Kernel / FilterAPITest.php
diff --git a/web/core/modules/filter/tests/src/Kernel/FilterAPITest.php b/web/core/modules/filter/tests/src/Kernel/FilterAPITest.php
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@@ -0,0 +1,509 @@
+<?php
+
+namespace Drupal\Tests\filter\Kernel;
+
+use Drupal\Core\Language\LanguageInterface;
+use Drupal\Core\Session\AnonymousUserSession;
+use Drupal\Core\TypedData\OptionsProviderInterface;
+use Drupal\Core\TypedData\DataDefinition;
+use Drupal\filter\Entity\FilterFormat;
+use Drupal\filter\Plugin\DataType\FilterFormat as FilterFormatDataType;
+use Drupal\filter\Plugin\FilterInterface;
+use Drupal\KernelTests\Core\Entity\EntityKernelTestBase;
+use Symfony\Component\Validator\ConstraintViolationListInterface;
+
+/**
+ * Tests the behavior of the API of the Filter module.
+ *
+ * @group filter
+ */
+class FilterAPITest extends EntityKernelTestBase {
+
+  public static $modules = ['system', 'filter', 'filter_test', 'user'];
+
+  protected function setUp() {
+    parent::setUp();
+
+    $this->installConfig(['system', 'filter', 'filter_test']);
+  }
+
+  /**
+   * Tests that the filter order is respected.
+   */
+  public function testCheckMarkupFilterOrder() {
+    // Create crazy HTML format.
+    $crazy_format = FilterFormat::create([
+      'format' => 'crazy',
+      'name' => 'Crazy',
+      'weight' => 1,
+      'filters' => [
+        'filter_html_escape' => [
+          'weight' => 10,
+          'status' => 1,
+        ],
+        'filter_html' => [
+          'weight' => -10,
+          'status' => 1,
+          'settings' => [
+            'allowed_html' => '<p>',
+          ],
+        ],
+      ]
+    ]);
+    $crazy_format->save();
+
+    $text = "<p>Llamas are <not> awesome!</p>";
+    $expected_filtered_text = "&lt;p&gt;Llamas are  awesome!&lt;/p&gt;";
+
+    $this->assertEqual(check_markup($text, 'crazy'), $expected_filtered_text, 'Filters applied in correct order.');
+  }
+
+  /**
+   * Tests the ability to apply only a subset of filters.
+   */
+  public function testCheckMarkupFilterSubset() {
+    $text = "Text with <marquee>evil content and</marquee> a URL: https://www.drupal.org!";
+    $expected_filtered_text = "Text with evil content and a URL: <a href=\"https://www.drupal.org\">https://www.drupal.org</a>!";
+    $expected_filter_text_without_html_generators = "Text with evil content and a URL: https://www.drupal.org!";
+
+    $actual_filtered_text = check_markup($text, 'filtered_html', '', []);
+    $this->verbose("Actual:<pre>$actual_filtered_text</pre>Expected:<pre>$expected_filtered_text</pre>");
+    $this->assertEqual(
+      $actual_filtered_text,
+      $expected_filtered_text,
+      'Expected filter result.'
+    );
+    $actual_filtered_text_without_html_generators = check_markup($text, 'filtered_html', '', [FilterInterface::TYPE_MARKUP_LANGUAGE]);
+    $this->verbose("Actual:<pre>$actual_filtered_text_without_html_generators</pre>Expected:<pre>$expected_filter_text_without_html_generators</pre>");
+    $this->assertEqual(
+      $actual_filtered_text_without_html_generators,
+      $expected_filter_text_without_html_generators,
+      'Expected filter result when skipping FilterInterface::TYPE_MARKUP_LANGUAGE filters.'
+    );
+    // Related to @see FilterSecurityTest.php/testSkipSecurityFilters(), but
+    // this check focuses on the ability to filter multiple filter types at once.
+    // Drupal core only ships with these two types of filters, so this is the
+    // most extensive test possible.
+    $actual_filtered_text_without_html_generators = check_markup($text, 'filtered_html', '', [FilterInterface::TYPE_HTML_RESTRICTOR, FilterInterface::TYPE_MARKUP_LANGUAGE]);
+    $this->verbose("Actual:<pre>$actual_filtered_text_without_html_generators</pre>Expected:<pre>$expected_filter_text_without_html_generators</pre>");
+    $this->assertEqual(
+      $actual_filtered_text_without_html_generators,
+      $expected_filter_text_without_html_generators,
+      'Expected filter result when skipping FilterInterface::TYPE_MARKUP_LANGUAGE filters, even when trying to disable filters of the FilterInterface::TYPE_HTML_RESTRICTOR type.'
+    );
+  }
+
+  /**
+   * Tests the following functions for a variety of formats:
+   *   - \Drupal\filter\Entity\FilterFormatInterface::getHtmlRestrictions()
+   *   - \Drupal\filter\Entity\FilterFormatInterface::getFilterTypes()
+   */
+  public function testFilterFormatAPI() {
+    // Test on filtered_html.
+    $filtered_html_format = FilterFormat::load('filtered_html');
+    $this->assertIdentical(
+      $filtered_html_format->getHtmlRestrictions(),
+      [
+        'allowed' => [
+          'p' => FALSE,
+          'br' => FALSE,
+          'strong' => FALSE,
+          'a' => ['href' => TRUE, 'hreflang' => TRUE],
+          '*' => ['style' => FALSE, 'on*' => FALSE, 'lang' => TRUE, 'dir' => ['ltr' => TRUE, 'rtl' => TRUE]],
+        ],
+      ],
+      'FilterFormatInterface::getHtmlRestrictions() works as expected for the filtered_html format.'
+    );
+    $this->assertIdentical(
+      $filtered_html_format->getFilterTypes(),
+      [FilterInterface::TYPE_HTML_RESTRICTOR, FilterInterface::TYPE_MARKUP_LANGUAGE],
+      'FilterFormatInterface::getFilterTypes() works as expected for the filtered_html format.'
+    );
+
+    // Test on full_html.
+    $full_html_format = FilterFormat::load('full_html');
+    $this->assertIdentical(
+      $full_html_format->getHtmlRestrictions(),
+      FALSE, // Every tag is allowed.
+      'FilterFormatInterface::getHtmlRestrictions() works as expected for the full_html format.'
+    );
+    $this->assertIdentical(
+      $full_html_format->getFilterTypes(),
+      [],
+      'FilterFormatInterface::getFilterTypes() works as expected for the full_html format.'
+    );
+
+    // Test on stupid_filtered_html, where nothing is allowed.
+    $stupid_filtered_html_format = FilterFormat::create([
+      'format' => 'stupid_filtered_html',
+      'name' => 'Stupid Filtered HTML',
+      'filters' => [
+        'filter_html' => [
+          'status' => 1,
+          'settings' => [
+            'allowed_html' => '', // Nothing is allowed.
+          ],
+        ],
+      ],
+    ]);
+    $stupid_filtered_html_format->save();
+    $this->assertIdentical(
+      $stupid_filtered_html_format->getHtmlRestrictions(),
+      ['allowed' => []], // No tag is allowed.
+      'FilterFormatInterface::getHtmlRestrictions() works as expected for the stupid_filtered_html format.'
+    );
+    $this->assertIdentical(
+      $stupid_filtered_html_format->getFilterTypes(),
+      [FilterInterface::TYPE_HTML_RESTRICTOR],
+      'FilterFormatInterface::getFilterTypes() works as expected for the stupid_filtered_html format.'
+    );
+
+    // Test on very_restricted_html, where there's two different filters of the
+    // FilterInterface::TYPE_HTML_RESTRICTOR type, each restricting in different ways.
+    $very_restricted_html_format = FilterFormat::create([
+      'format' => 'very_restricted_html',
+      'name' => 'Very Restricted HTML',
+      'filters' => [
+        'filter_html' => [
+          'status' => 1,
+          'settings' => [
+            'allowed_html' => '<p> <br> <a href> <strong>',
+          ],
+        ],
+        'filter_test_restrict_tags_and_attributes' => [
+          'status' => 1,
+          'settings' => [
+            'restrictions' => [
+              'allowed' => [
+                'p' => TRUE,
+                'br' => FALSE,
+                'a' => ['href' => TRUE],
+                'em' => TRUE,
+              ],
+            ]
+          ],
+        ],
+      ]
+    ]);
+    $very_restricted_html_format->save();
+    $this->assertIdentical(
+      $very_restricted_html_format->getHtmlRestrictions(),
+      [
+        'allowed' => [
+          'p' => FALSE,
+          'br' => FALSE,
+          'a' => ['href' => TRUE],
+          '*' => ['style' => FALSE, 'on*' => FALSE, 'lang' => TRUE, 'dir' => ['ltr' => TRUE, 'rtl' => TRUE]],
+        ],
+      ],
+      'FilterFormatInterface::getHtmlRestrictions() works as expected for the very_restricted_html format.'
+    );
+    $this->assertIdentical(
+      $very_restricted_html_format->getFilterTypes(),
+      [FilterInterface::TYPE_HTML_RESTRICTOR],
+      'FilterFormatInterface::getFilterTypes() works as expected for the very_restricted_html format.'
+    );
+
+    // Test on nonsensical_restricted_html, where the allowed attribute values
+    // contain asterisks, which do not have any meaning, but which we also
+    // cannot prevent because configuration can be modified outside of forms.
+    $nonsensical_restricted_html = FilterFormat::create([
+      'format' => 'nonsensical_restricted_html',
+      'name' => 'Nonsensical Restricted HTML',
+      'filters' => [
+        'filter_html' => [
+          'status' => 1,
+          'settings' => [
+            'allowed_html' => '<a> <b class> <c class="*"> <d class="foo bar-* *">',
+          ],
+        ],
+      ]
+    ]);
+    $nonsensical_restricted_html->save();
+    $this->assertIdentical(
+      $nonsensical_restricted_html->getHtmlRestrictions(),
+      [
+        'allowed' => [
+          'a' => FALSE,
+          'b' => ['class' => TRUE],
+          'c' => ['class' => TRUE],
+          'd' => ['class' => ['foo' => TRUE, 'bar-*' => TRUE]],
+          '*' => ['style' => FALSE, 'on*' => FALSE, 'lang' => TRUE, 'dir' => ['ltr' => TRUE, 'rtl' => TRUE]],
+        ],
+      ],
+      'FilterFormatInterface::getHtmlRestrictions() works as expected for the nonsensical_restricted_html format.'
+    );
+    $this->assertIdentical(
+      $very_restricted_html_format->getFilterTypes(),
+      [FilterInterface::TYPE_HTML_RESTRICTOR],
+      'FilterFormatInterface::getFilterTypes() works as expected for the very_restricted_html format.'
+    );
+  }
+
+  /**
+   * Tests the 'processed_text' element.
+   *
+   * check_markup() is a wrapper for the 'processed_text' element, for use in
+   * simple scenarios; the 'processed_text' element has more advanced features:
+   * it lets filters attach assets, associate cache tags and define
+   * #lazy_builder callbacks.
+   * This test focuses solely on those advanced features.
+   */
+  public function testProcessedTextElement() {
+    FilterFormat::create([
+      'format' => 'element_test',
+      'name' => 'processed_text element test format',
+      'filters' => [
+        'filter_test_assets' => [
+          'weight' => -1,
+          'status' => TRUE,
+        ],
+        'filter_test_cache_tags' => [
+          'weight' => 0,
+          'status' => TRUE,
+        ],
+        'filter_test_cache_contexts' => [
+          'weight' => 0,
+          'status' => TRUE,
+        ],
+        'filter_test_cache_merge' => [
+          'weight' => 0,
+          'status' => TRUE,
+        ],
+        'filter_test_placeholders' => [
+          'weight' => 1,
+          'status' => TRUE,
+        ],
+        // Run the HTML corrector filter last, because it has the potential to
+        // break the placeholders added by the filter_test_placeholders filter.
+        'filter_htmlcorrector' => [
+          'weight' => 10,
+          'status' => TRUE,
+        ],
+      ],
+    ])->save();
+
+    $build = [
+      '#type' => 'processed_text',
+      '#text' => '<p>Hello, world!</p>',
+      '#format' => 'element_test',
+    ];
+    drupal_render_root($build);
+
+    // Verify the attachments and cacheability metadata.
+    $expected_attachments = [
+      // The assets attached by the filter_test_assets filter.
+      'library' => [
+        'filter/caption',
+      ],
+      // The placeholders attached that still need to be processed.
+      'placeholders' => [],
+    ];
+    $this->assertEqual($expected_attachments, $build['#attached'], 'Expected attachments present');
+    $expected_cache_tags = [
+      // The cache tag set by the processed_text element itself.
+      'config:filter.format.element_test',
+      // The cache tags set by the filter_test_cache_tags filter.
+      'foo:bar',
+      'foo:baz',
+      // The cache tags set by the filter_test_cache_merge filter.
+      'merge:tag',
+    ];
+    $this->assertEqual($expected_cache_tags, $build['#cache']['tags'], 'Expected cache tags present.');
+    $expected_cache_contexts = [
+      // The cache context set by the filter_test_cache_contexts filter.
+      'languages:' . LanguageInterface::TYPE_CONTENT,
+      // The default cache contexts for Renderer.
+      'languages:' . LanguageInterface::TYPE_INTERFACE,
+      'theme',
+      // The cache tags set by the filter_test_cache_merge filter.
+      'user.permissions',
+    ];
+    $this->assertEqual($expected_cache_contexts, $build['#cache']['contexts'], 'Expected cache contexts present.');
+    $expected_markup = '<p>Hello, world!</p><p>This is a dynamic llama.</p>';
+    $this->assertEqual($expected_markup, $build['#markup'], 'Expected #lazy_builder callback has been applied.');
+  }
+
+  /**
+   * Tests the function of the typed data type.
+   */
+  public function testTypedDataAPI() {
+    $definition = DataDefinition::create('filter_format');
+    $data = \Drupal::typedDataManager()->create($definition);
+
+    $this->assertTrue($data instanceof OptionsProviderInterface, 'Typed data object implements \Drupal\Core\TypedData\OptionsProviderInterface');
+
+    $filtered_html_user = $this->createUser(['uid' => 2], [
+      FilterFormat::load('filtered_html')->getPermissionName(),
+    ]);
+
+    // Test with anonymous user.
+    $user = new AnonymousUserSession();
+    \Drupal::currentUser()->setAccount($user);
+
+    $expected_available_options = [
+      'filtered_html' => 'Filtered HTML',
+      'full_html' => 'Full HTML',
+      'filter_test' => 'Test format',
+      'plain_text' => 'Plain text',
+    ];
+
+    $available_values = $data->getPossibleValues();
+    $this->assertEqual($available_values, array_keys($expected_available_options));
+    $available_options = $data->getPossibleOptions();
+    $this->assertEqual($available_options, $expected_available_options);
+
+    $allowed_values = $data->getSettableValues($user);
+    $this->assertEqual($allowed_values, ['plain_text']);
+    $allowed_options = $data->getSettableOptions($user);
+    $this->assertEqual($allowed_options, ['plain_text' => 'Plain text']);
+
+    $data->setValue('foo');
+    $violations = $data->validate();
+    $this->assertFilterFormatViolation($violations, 'foo');
+
+    // Make sure the information provided by a violation is correct.
+    $violation = $violations[0];
+    $this->assertEqual($violation->getRoot(), $data, 'Violation root is filter format.');
+    $this->assertEqual($violation->getPropertyPath(), '', 'Violation property path is correct.');
+    $this->assertEqual($violation->getInvalidValue(), 'foo', 'Violation contains invalid value.');
+
+    $data->setValue('plain_text');
+    $violations = $data->validate();
+    $this->assertEqual(count($violations), 0, "No validation violation for format 'plain_text' found");
+
+    // Anonymous doesn't have access to the 'filtered_html' format.
+    $data->setValue('filtered_html');
+    $violations = $data->validate();
+    $this->assertFilterFormatViolation($violations, 'filtered_html');
+
+    // Set user with access to 'filtered_html' format.
+    \Drupal::currentUser()->setAccount($filtered_html_user);
+    $violations = $data->validate();
+    $this->assertEqual(count($violations), 0, "No validation violation for accessible format 'filtered_html' found.");
+
+    $allowed_values = $data->getSettableValues($filtered_html_user);
+    $this->assertEqual($allowed_values, ['filtered_html', 'plain_text']);
+    $allowed_options = $data->getSettableOptions($filtered_html_user);
+    $expected_allowed_options = [
+      'filtered_html' => 'Filtered HTML',
+      'plain_text' => 'Plain text',
+    ];
+    $this->assertEqual($allowed_options, $expected_allowed_options);
+  }
+
+  /**
+   * Tests that FilterFormat::preSave() only saves customized plugins.
+   */
+  public function testFilterFormatPreSave() {
+    /** @var \Drupal\filter\FilterFormatInterface $crazy_format */
+    $crazy_format = FilterFormat::create([
+      'format' => 'crazy',
+      'name' => 'Crazy',
+      'weight' => 1,
+      'filters' => [
+        'filter_html_escape' => [
+          'weight' => 10,
+          'status' => 1,
+        ],
+        'filter_html' => [
+          'weight' => -10,
+          'status' => 1,
+          'settings' => [
+            'allowed_html' => '<p>',
+          ],
+        ],
+      ]
+    ]);
+    $crazy_format->save();
+    // Use config to directly load the configuration and check that only enabled
+    // or customized plugins are saved to configuration.
+    $filters = $this->config('filter.format.crazy')->get('filters');
+    $this->assertEqual(['filter_html_escape', 'filter_html'], array_keys($filters));
+
+    // Disable a plugin to ensure that disabled plugins with custom settings are
+    // stored in configuration.
+    $crazy_format->setFilterConfig('filter_html_escape', ['status' => FALSE]);
+    $crazy_format->save();
+    $filters = $this->config('filter.format.crazy')->get('filters');
+    $this->assertEqual(['filter_html_escape', 'filter_html'], array_keys($filters));
+
+    // Set the settings as per default to ensure that disable plugins in this
+    // state are not stored in configuration.
+    $crazy_format->setFilterConfig('filter_html_escape', ['weight' => -10]);
+    $crazy_format->save();
+    $filters = $this->config('filter.format.crazy')->get('filters');
+    $this->assertEqual(['filter_html'], array_keys($filters));
+  }
+
+  /**
+   * Checks if an expected violation exists in the given violations.
+   *
+   * @param \Symfony\Component\Validator\ConstraintViolationListInterface $violations
+   *   The violations to assert.
+   * @param mixed $invalid_value
+   *   The expected invalid value.
+   */
+  public function assertFilterFormatViolation(ConstraintViolationListInterface $violations, $invalid_value) {
+    $filter_format_violation_found = FALSE;
+    foreach ($violations as $violation) {
+      if ($violation->getRoot() instanceof FilterFormatDataType && $violation->getInvalidValue() === $invalid_value) {
+        $filter_format_violation_found = TRUE;
+        break;
+      }
+    }
+    $this->assertTrue($filter_format_violation_found, format_string('Validation violation for invalid value "%invalid_value" found', ['%invalid_value' => $invalid_value]));
+  }
+
+  /**
+   * Tests that filter format dependency removal works.
+   *
+   * Ensure that modules providing filter plugins are required when the plugin
+   * is in use, and that only disabled plugins are removed from format
+   * configuration entities rather than the configuration entities being
+   * deleted.
+   *
+   * @see \Drupal\filter\Entity\FilterFormat::onDependencyRemoval()
+   * @see filter_system_info_alter()
+   */
+  public function testDependencyRemoval() {
+    $this->installSchema('user', ['users_data']);
+    $filter_format = FilterFormat::load('filtered_html');
+
+    // Disable the filter_test_restrict_tags_and_attributes filter plugin but
+    // have custom configuration so that the filter plugin is still configured
+    // in filtered_html the filter format.
+    $filter_config = [
+      'weight' => 20,
+      'status' => 0,
+    ];
+    $filter_format->setFilterConfig('filter_test_restrict_tags_and_attributes', $filter_config)->save();
+    // Use the get method to match the assert after the module has been
+    // uninstalled.
+    $filters = $filter_format->get('filters');
+    $this->assertTrue(isset($filters['filter_test_restrict_tags_and_attributes']), 'The filter plugin filter_test_restrict_tags_and_attributes is configured by the filtered_html filter format.');
+
+    drupal_static_reset('filter_formats');
+    \Drupal::entityManager()->getStorage('filter_format')->resetCache();
+    $module_data = _system_rebuild_module_data();
+    $this->assertFalse(isset($module_data['filter_test']->info['required']), 'The filter_test module is required.');
+
+    // Verify that a dependency exists on the module that provides the filter
+    // plugin since it has configuration for the disabled plugin.
+    $this->assertEqual(['module' => ['filter_test']], $filter_format->getDependencies());
+
+    // Uninstall the module.
+    \Drupal::service('module_installer')->uninstall(['filter_test']);
+
+    // Verify the filter format still exists but the dependency and filter is
+    // gone.
+    \Drupal::entityManager()->getStorage('filter_format')->resetCache();
+    $filter_format = FilterFormat::load('filtered_html');
+    $this->assertEqual([], $filter_format->getDependencies());
+    // Use the get method since the FilterFormat::filters() method only returns
+    // existing plugins.
+    $filters = $filter_format->get('filters');
+    $this->assertFalse(isset($filters['filter_test_restrict_tags_and_attributes']), 'The filter plugin filter_test_restrict_tags_and_attributes is not configured by the filtered_html filter format.');
+  }
+
+}