Classes, traits, and interfaces - 10.3.x - drupal

Introduction to classes

A lot of the PHP code in Drupal is object oriented (OO), making use of PHP classes, interfaces, and traits. See the Objected-oriented programming conventions for more information.

See also

Objected-oriented programming conventions

File

core/core.api.php, line 1518

Name Deprecated Object type Namespace File name Summary Direct uses Use statements Strings
TestEntityType class Drupal\Tests\views\Kernel\Entity core/modules/views/tests/src/Kernel/Entity/EntityViewsDataTest.php Entity type class which allows changing the entity keys.
TestEntityTypeManager class Drupal\Tests\Core\Entity core/tests/Drupal/Tests/Core/Entity/EntityTypeManagerTest.php Provides a test entity type manager.
TestEventListener class Drupal\Tests\Component\EventDispatcher core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php
TestEventSubscriber class Drupal\Tests\Component\EventDispatcher core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php
TestEventSubscriberWithMultipleListeners class Drupal\Tests\Component\EventDispatcher core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php
TestEventSubscriberWithPriorities class Drupal\Tests\Component\EventDispatcher core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php
TestExample class Drupal\views_test_data\Plugin\views\area core/modules/views/tests/modules/views_test_data/src/Plugin/views/area/TestExample.php Test area plugin.
TestExtendedNormalizer class Drupal\Tests\serialization\Unit\Normalizer core/modules/serialization/tests/src/Unit/Normalizer/ComplexDataNormalizerTest.php Test normalizer with a different supported class.
TestExtension class Drupal\twig_extension_test\TwigExtension core/modules/system/tests/modules/twig_extension_test/src/TwigExtension/TestExtension.php A test Twig extension that adds a custom function and a custom filter. 1 2
TestExtension class Drupal\Tests\Core\Extension core/tests/Drupal/Tests/Core/Extension/ExtensionListTest.php
TestFieldApplicableFormatter class Drupal\field_test\Plugin\Field\FieldFormatter core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldApplicableFormatter.php Plugin implementation of the 'field_test_applicable' formatter.
TestFieldConstraint class Drupal\field_test\Plugin\Validation\Constraint core/modules/field/tests/modules/field_test/src/Plugin/Validation/Constraint/TestFieldConstraint.php Checks if a value is not equal.
TestFieldDefaultFormatter class Drupal\field_test\Plugin\Field\FieldFormatter core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldDefaultFormatter.php Plugin implementation of the 'field_test_default' formatter.
TestFieldEmptyFormatter class Drupal\field_test\Plugin\Field\FieldFormatter core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldEmptyFormatter.php Plugin implementation of the 'field_empty_test' formatter.
TestFieldEmptySettingFormatter class Drupal\field_test\Plugin\Field\FieldFormatter core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldEmptySettingFormatter.php Plugin implementation of the 'field_empty_setting' formatter.
TestFieldMultipleFormatter class Drupal\field_test\Plugin\Field\FieldFormatter core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldMultipleFormatter.php Plugin implementation of the 'field_test_multiple' formatter.
TestFieldNoSettingsFormatter class Drupal\field_test\Plugin\Field\FieldFormatter core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldNoSettingsFormatter.php Plugin implementation of the 'field_no_settings' formatter.
TestFieldPrepareViewFormatter class Drupal\field_test\Plugin\Field\FieldFormatter core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldFormatter/TestFieldPrepareViewFormatter.php Plugin implementation of the 'field_test_with_prepare_view' formatter.
TestFieldType class Drupal\Tests\field\Unit core/modules/field/tests/src/Unit/FieldStorageConfigEntityUnitTest.php A test class to test field storage dependencies.
TestFieldWidget class Drupal\field_test\Plugin\Field\FieldWidget core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldWidget/TestFieldWidget.php Plugin implementation of the 'test_field_widget' widget. 1
TestFieldWidgetMultilingual class Drupal\field_test\Plugin\Field\FieldWidget core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldWidget/TestFieldWidgetMultilingual.php Plugin implementation of the 'test_field_widget_multilingual' widget.
TestFieldWidgetMultiple class Drupal\field_test\Plugin\Field\FieldWidget core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldWidget/TestFieldWidgetMultiple.php Plugin implementation of the 'test_field_widget_multiple' widget. 1
TestFieldWidgetMultipleSingleValues class Drupal\field_test\Plugin\Field\FieldWidget core/modules/field/tests/modules/field_test/src/Plugin/Field/FieldWidget/TestFieldWidgetMultipleSingleValues.php Plugin implementation of the 'test_field_widget_multiple' widget.
TestFileCopy class Drupal\Tests\migrate\Unit\process core/modules/migrate/tests/src/Unit/process/FileCopyTest.php Class for testing FileCopy.
TestFileCreationTrait trait Drupal\Tests core/tests/Drupal/Tests/TestFileCreationTrait.php Provides methods to create test files from given values. 64
TestFileParser class Drupal\Core\Test\RunTests core/lib/Drupal/Core/Test/RunTests/TestFileParser.php Parses class names from PHP files without loading them. 1
TestFileParserTest class Drupal\Tests\Core\Test\RunTests core/tests/Drupal/Tests/Core/Test/RunTests/TestFileParserTest.php @coversDefaultClass \Drupal\Core\Test\RunTests\TestFileParser[[api-linebreak]] @group Test @group RunTests
TestFileTransfer class Drupal\Tests\system\Functional\FileTransfer core/modules/system/tests/src/Functional/FileTransfer/TestFileTransfer.php Mock FileTransfer object for test case. 1
TestFileTransferWithSettingsForm class Drupal\update_test core/modules/update/tests/modules/update_test/src/TestFileTransferWithSettingsForm.php Provides an object to test the settings form functionality.
TestFileUsage class Drupal\service_provider_test core/modules/system/tests/modules/service_provider_test/src/TestFileUsage.php
TestFilteredPluginManager class Drupal\Tests\Core\Plugin core/tests/Drupal/Tests/Core/Plugin/FilteredPluginManagerTraitTest.php Class that allows testing the trait.
TestFilterIterator class Drupal\Tests\migrate\Kernel core/modules/migrate/tests/src/Kernel/TestFilterIterator.php Class to test FilterIterators.
TestForm class Drupal\test_page_test\Form core/modules/system/tests/modules/test_page_test/src/Form/TestForm.php Defines a test form for testing assertions. 1
TestForm class Drupal\block_test\Form core/modules/block/tests/modules/block_test/src/Form/TestForm.php Form that performs base block form test.
TestForm class Drupal\dialog_renderer_test\Form core/modules/system/tests/modules/dialog_renderer_test/src/Form/TestForm.php Provides a form for testing the drupalAutoButtons dialog option. 1
TestForm class Drupal\Tests\Core\Form core/tests/Drupal/Tests/Core/Form/FormBuilderTest.php 2
TestForm class Drupal\page_cache_form_test\Form core/modules/page_cache/tests/modules/src/Form/TestForm.php A form to test page cache. 1
TestFormApiFormBlock class Drupal\layout_builder_form_block_test\Plugin\Block core/modules/layout_builder/tests/modules/layout_builder_form_block_test/src/Plugin/Block/TestFormApiFormBlock.php Provides a block containing a Form API form for use in Layout Builder tests.
TestFormBlock class Drupal\block_test\Plugin\Block core/modules/block/tests/modules/block_test/src/Plugin/Block/TestFormBlock.php Provides a block to test caching.
TestFormInjected class Drupal\Tests\Core\Form core/tests/Drupal/Tests/Core/Form/FormBuilderTest.php
TestFormWithPredefinedForm class Drupal\Tests\Core\Form core/tests/Drupal/Tests/Core/Form/FormBuilderTest.php
TestHandler class Drupal\Tests\views\Unit\Plugin core/modules/views/tests/src/Unit/Plugin/HandlerBaseTest.php Allow testing base handler implementation by extending the abstract class.
TestHelperPlugin class Drupal\views\Tests core/modules/views/src/Tests/TestHelperPlugin.php Wraps the plugin base class to be able to instantiate it. 1
TestHelpSection class Drupal\help_topics_test\Plugin\HelpSection core/modules/help/tests/modules/help_topics_test/src/Plugin/HelpSection/TestHelpSection.php Provides a searchable help section for testing.
TestHelpTopicDeriver class Drupal\help_topics_test\Plugin\Deriver core/modules/help/tests/modules/help_topics_test/src/Plugin/Deriver/TestHelpTopicDeriver.php A test discovery deriver for fake help topics. 1
TestHelpTopicPlugin class Drupal\help_topics_test\Plugin\HelpTopic core/modules/help/tests/modules/help_topics_test/src/Plugin/HelpTopic/TestHelpTopicPlugin.php A fake help topic plugin for testing. 1
TestHtmlBlock class Drupal\block_test\Plugin\Block core/modules/block/tests/modules/block_test/src/Plugin/Block/TestHtmlBlock.php Provides a block to test HTML. 1
TestHtmlMailCollector class Drupal\mail_html_test\Plugin\Mail core/modules/system/tests/modules/mail_html_test/src/Plugin/Mail/TestHtmlMailCollector.php Defines a mail backend that captures sent HTML messages in the state system.
TestHttpClientMiddleware class Drupal\Core\Test\HttpClientMiddleware core/lib/Drupal/Core/Test/HttpClientMiddleware/TestHttpClientMiddleware.php Overrides the User-Agent HTTP header for outbound HTTP requests. 1
TestingProfileInstallTest class Drupal\FunctionalTests\Installer core/tests/Drupal/FunctionalTests/Installer/TestingProfileInstallTest.php Tests installing the Testing profile with update notifications on.

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