abstract class UnitTestCase in Drupal 9

Provides a base class and helpers for Drupal unit tests.

Using Symfony's dump() function() in Unit tests will produce output on the command line.

Hierarchy

• class \Drupal\Tests\UnitTestCase extends \PHPUnit\Framework\TestCase uses \Symfony\Bridge\PhpUnit\ExpectDeprecationTrait, PhpUnitCompatibilityTrait, PhpUnitWarnings

Related topics

Automated tests

Overview of PHPUnit and Nightwatch automated tests.

554 files declare their use of UnitTestCase

AcceptHeaderMatcherTest.php in core/tests/Drupal/Tests/Core/Routing/AcceptHeaderMatcherTest.php

AccessAwareRouterTest.php in core/tests/Drupal/Tests/Core/Routing/AccessAwareRouterTest.php

AccessGroupAndTest.php in core/modules/block_content/tests/src/Unit/Access/AccessGroupAndTest.php

AccessManagerTest.php in core/tests/Drupal/Tests/Core/Access/AccessManagerTest.php

Contains \Drupal\Tests\Core\Access\AccessManagerTest.

AccessResultForbiddenTest.php in core/tests/Drupal/Tests/Core/Access/AccessResultForbiddenTest.php

... See full list

File

core/tests/Drupal/Tests/UnitTestCase.php, line 26

Namespace

Drupal\Tests

abstract class UnitTestCase extends TestCase {
  use PhpUnitWarnings;
  use PhpUnitCompatibilityTrait;
  use ExpectDeprecationTrait;

  /**
   * The random generator.
   *
   * @var \Drupal\Component\Utility\Random
   */
  protected $randomGenerator;

  /**
   * The app root.
   *
   * @var string
   */
  protected $root;

  /**
   * {@inheritdoc}
   */
  public static function setUpBeforeClass() {
    parent::setUpBeforeClass();
    VarDumper::setHandler(TestVarDumper::class . '::cliHandler');
  }

  /**
   * {@inheritdoc}
   */
  protected function setUp() {
    parent::setUp();

    // Ensure that an instantiated container in the global state of \Drupal from
    // a previous test does not leak into this test.
    \Drupal::unsetContainer();

    // Ensure that the NullFileCache implementation is used for the FileCache as
    // unit tests should not be relying on caches implicitly.
    FileCacheFactory::setConfiguration([
      FileCacheFactory::DISABLE_CACHE => TRUE,
    ]);

    // Ensure that FileCacheFactory has a prefix.
    FileCacheFactory::setPrefix('prefix');
    $this->root = dirname(substr(__DIR__, 0, -strlen(__NAMESPACE__)), 2);
  }

  /**
   * Generates a unique random string containing letters and numbers.
   *
   * @param int $length
   *   Length of random string to generate.
   *
   * @return string
   *   Randomly generated unique string.
   *
   * @see \Drupal\Component\Utility\Random::name()
   */
  public function randomMachineName($length = 8) {
    return $this
      ->getRandomGenerator()
      ->name($length, TRUE);
  }

  /**
   * Gets the random generator for the utility methods.
   *
   * @return \Drupal\Component\Utility\Random
   *   The random generator
   */
  protected function getRandomGenerator() {
    if (!is_object($this->randomGenerator)) {
      $this->randomGenerator = new Random();
    }
    return $this->randomGenerator;
  }

  /**
   * Asserts if two arrays are equal by sorting them first.
   *
   * @param array $expected
   * @param array $actual
   * @param string $message
   *
   * @deprecated in drupal:9.1.0 and is removed from drupal:10.0.0. Use
   *   ::assertEquals, ::assertEqualsCanonicalizing, or ::assertSame instead.
   *
   * @see https://www.drupal.org/node/3136304
   */
  protected function assertArrayEquals(array $expected, array $actual, $message = NULL) {
    @trigger_error(__METHOD__ . "() is deprecated in drupal:9.1.0 and is removed from drupal:10.0.0. Use ::assertEquals(), ::assertEqualsCanonicalizing(), or ::assertSame() instead. See https://www.drupal.org/node/3136304", E_USER_DEPRECATED);
    ksort($expected);
    ksort($actual);
    $this
      ->assertEquals($expected, $actual, !empty($message) ? $message : '');
  }

  /**
   * Returns a stub config factory that behaves according to the passed array.
   *
   * Use this to generate a config factory that will return the desired values
   * for the given config names.
   *
   * @param array $configs
   *   An associative array of configuration settings whose keys are
   *   configuration object names and whose values are key => value arrays for
   *   the configuration object in question. Defaults to an empty array.
   *
   * @return \PHPUnit\Framework\MockObject\MockBuilder
   *   A MockBuilder object for the ConfigFactory with the desired return
   *   values.
   */
  public function getConfigFactoryStub(array $configs = []) {
    $config_get_map = [];
    $config_editable_map = [];

    // Construct the desired configuration object stubs, each with its own
    // desired return map.
    foreach ($configs as $config_name => $config_values) {

      // Define a closure over the $config_values, which will be used as a
      // returnCallback below. This function will mimic
      // \Drupal\Core\Config\Config::get and allow using dotted keys.
      $config_get = function ($key = '') use ($config_values) {

        // Allow to pass in no argument.
        if (empty($key)) {
          return $config_values;
        }

        // See if we have the key as is.
        if (isset($config_values[$key])) {
          return $config_values[$key];
        }
        $parts = explode('.', $key);
        $value = NestedArray::getValue($config_values, $parts, $key_exists);
        return $key_exists ? $value : NULL;
      };
      $immutable_config_object = $this
        ->getMockBuilder('Drupal\\Core\\Config\\ImmutableConfig')
        ->disableOriginalConstructor()
        ->getMock();
      $immutable_config_object
        ->expects($this
        ->any())
        ->method('get')
        ->willReturnCallback($config_get);
      $config_get_map[] = [
        $config_name,
        $immutable_config_object,
      ];
      $mutable_config_object = $this
        ->getMockBuilder('Drupal\\Core\\Config\\Config')
        ->disableOriginalConstructor()
        ->getMock();
      $mutable_config_object
        ->expects($this
        ->any())
        ->method('get')
        ->willReturnCallback($config_get);
      $config_editable_map[] = [
        $config_name,
        $mutable_config_object,
      ];
    }

    // Construct a config factory with the array of configuration object stubs
    // as its return map.
    $config_factory = $this
      ->createMock('Drupal\\Core\\Config\\ConfigFactoryInterface');
    $config_factory
      ->expects($this
      ->any())
      ->method('get')
      ->willReturnMap($config_get_map);
    $config_factory
      ->expects($this
      ->any())
      ->method('getEditable')
      ->willReturnMap($config_editable_map);
    return $config_factory;
  }

  /**
   * Returns a stub config storage that returns the supplied configuration.
   *
   * @param array $configs
   *   An associative array of configuration settings whose keys are
   *   configuration object names and whose values are key => value arrays
   *   for the configuration object in question.
   *
   * @return \Drupal\Core\Config\StorageInterface
   *   A mocked config storage.
   */
  public function getConfigStorageStub(array $configs) {
    $config_storage = $this
      ->createMock('Drupal\\Core\\Config\\NullStorage');
    $config_storage
      ->expects($this
      ->any())
      ->method('listAll')
      ->will($this
      ->returnValue(array_keys($configs)));
    foreach ($configs as $name => $config) {
      $config_storage
        ->expects($this
        ->any())
        ->method('read')
        ->with($this
        ->equalTo($name))
        ->will($this
        ->returnValue($config));
    }
    return $config_storage;
  }

  /**
   * Returns a stub translation manager that just returns the passed string.
   *
   * @return \PHPUnit\Framework\MockObject\MockObject|\Drupal\Core\StringTranslation\TranslationInterface
   *   A mock translation object.
   */
  public function getStringTranslationStub() {
    $translation = $this
      ->createMock('Drupal\\Core\\StringTranslation\\TranslationInterface');
    $translation
      ->expects($this
      ->any())
      ->method('translate')
      ->willReturnCallback(function ($string, array $args = [], array $options = []) use ($translation) {
      return new TranslatableMarkup($string, $args, $options, $translation);
    });
    $translation
      ->expects($this
      ->any())
      ->method('translateString')
      ->willReturnCallback(function (TranslatableMarkup $wrapper) {
      return $wrapper
        ->getUntranslatedString();
    });
    $translation
      ->expects($this
      ->any())
      ->method('formatPlural')
      ->willReturnCallback(function ($count, $singular, $plural, array $args = [], array $options = []) use ($translation) {
      $wrapper = new PluralTranslatableMarkup($count, $singular, $plural, $args, $options, $translation);
      return $wrapper;
    });
    return $translation;
  }

  /**
   * Sets up a container with a cache tags invalidator.
   *
   * @param \Drupal\Core\Cache\CacheTagsInvalidatorInterface $cache_tags_validator
   *   The cache tags invalidator.
   *
   * @return \Symfony\Component\DependencyInjection\ContainerInterface|\PHPUnit\Framework\MockObject\MockObject
   *   The container with the cache tags invalidator service.
   */
  protected function getContainerWithCacheTagsInvalidator(CacheTagsInvalidatorInterface $cache_tags_validator) {
    $container = $this
      ->createMock('Symfony\\Component\\DependencyInjection\\ContainerInterface');
    $container
      ->expects($this
      ->any())
      ->method('get')
      ->with('cache_tags.invalidator')
      ->will($this
      ->returnValue($cache_tags_validator));
    \Drupal::setContainer($container);
    return $container;
  }

  /**
   * Returns a stub class resolver.
   *
   * @return \Drupal\Core\DependencyInjection\ClassResolverInterface|\PHPUnit\Framework\MockObject\MockObject
   *   The class resolver stub.
   */
  protected function getClassResolverStub() {
    $class_resolver = $this
      ->createMock('Drupal\\Core\\DependencyInjection\\ClassResolverInterface');
    $class_resolver
      ->expects($this
      ->any())
      ->method('getInstanceFromDefinition')
      ->willReturnCallback(function ($class) {
      if (is_subclass_of($class, 'Drupal\\Core\\DependencyInjection\\ContainerInjectionInterface')) {
        return $class::create(new ContainerBuilder());
      }
      else {
        return new $class();
      }
    });
    return $class_resolver;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
PhpUnitWarnings::$deprecationWarnings	private static	property	Deprecation warnings from PHPUnit to raise with @trigger_error().
PhpUnitWarnings::addWarning	public	function	Converts PHPUnit deprecation warnings to E_USER_DEPRECATED.
UnitTestCase::$randomGenerator	protected	property	The random generator.
UnitTestCase::$root	protected	property	The app root.	1
UnitTestCase::assertArrayEquals Deprecated	protected	function	Asserts if two arrays are equal by sorting them first.
UnitTestCase::getClassResolverStub	protected	function	Returns a stub class resolver.
UnitTestCase::getConfigFactoryStub	public	function	Returns a stub config factory that behaves according to the passed array.
UnitTestCase::getConfigStorageStub	public	function	Returns a stub config storage that returns the supplied configuration.
UnitTestCase::getContainerWithCacheTagsInvalidator	protected	function	Sets up a container with a cache tags invalidator.
UnitTestCase::getRandomGenerator	protected	function	Gets the random generator for the utility methods.
UnitTestCase::getStringTranslationStub	public	function	Returns a stub translation manager that just returns the passed string.
UnitTestCase::randomMachineName	public	function	Generates a unique random string containing letters and numbers.
UnitTestCase::setUp	protected	function		308
UnitTestCase::setUpBeforeClass	public static	function