function AlterTest::testDrupalAlter

Tests if the theme has been altered.

@group legacy

File

core/modules/system/tests/src/Kernel/Common/AlterTest.php, line 31

Class

AlterTest

Tests alteration of arguments passed to \Drupal::moduleHandler->alter().

Namespace

Code

public function testDrupalAlter() : void {
  // This test depends on Olivero, so make sure that it is always the current
  // active theme.
  \Drupal::service('theme_installer')->install([
    'olivero',
  ]);
  \Drupal::theme()->setActiveTheme(\Drupal::service('theme.initialization')->initTheme('olivero'));
  $array = [
    'foo' => 'bar',
  ];
  $entity = new \stdClass();
  $entity->foo = 'bar';
  // Verify alteration of a single argument.
  $array_copy = $array;
  $array_expected = [
    'foo' => 'Drupal theme',
  ];
  \Drupal::moduleHandler()->alter('drupal_alter', $array_copy);
  \Drupal::theme()->alter('drupal_alter', $array_copy);
  $this->assertEquals($array_expected, $array_copy, 'Single array was altered.');
  $entity_copy = clone $entity;
  $entity_expected = clone $entity;
  $entity_expected->foo = 'Drupal theme';
  \Drupal::moduleHandler()->alter('drupal_alter', $entity_copy);
  \Drupal::theme()->alter('drupal_alter', $entity_copy);
  $this->assertEquals($entity_expected, $entity_copy, 'Single object was altered.');
  // Verify alteration of multiple arguments.
  $array_copy = $array;
  $entity_copy = clone $entity;
  $entity_expected = clone $entity;
  $entity_expected->foo = 'Drupal theme';
  $array2_copy = $array;
  $array2_expected = [
    'foo' => 'Drupal theme',
  ];
  \Drupal::moduleHandler()->alter('drupal_alter', $array_copy, $entity_copy, $array2_copy);
  \Drupal::theme()->alter('drupal_alter', $array_copy, $entity_copy, $array2_copy);
  $this->assertEquals($array_expected, $array_copy, 'First argument to \\Drupal::moduleHandler->alter() was altered.');
  $this->assertEquals($entity_expected, $entity_copy, 'Second argument to \\Drupal::moduleHandler->alter() was altered.');
  $this->assertEquals($array2_expected, $array2_copy, 'Third argument to \\Drupal::moduleHandler->alter() was altered.');
  // Verify alteration order when passing an array of types to
  // \Drupal::moduleHandler->alter(). common_test_module_implements_alter()
  // places 'block' implementation after other modules.
  $array_copy = $array;
  $array_expected = [
    'foo' => 'Drupal block theme',
  ];
  \Drupal::moduleHandler()->alter([
    'drupal_alter',
    'drupal_alter_foo',
  ], $array_copy);
  \Drupal::theme()->alter([
    'drupal_alter',
    'drupal_alter_foo',
  ], $array_copy);
  $this->assertEquals($array_expected, $array_copy, 'hook_TYPE_alter() implementations ran in correct order.');
}