class HistoryTokensHooksTest

class HistoryTokensHooksTest extends UnitTestCase {
  
  /**
   * Tests that tokenInfo() handles missing comment module gracefully.
   */
  public function testTokenInfoWithoutCommentModuleInstalled() : void {
    // Create a mock entity type that implements ContentEntityInterface.
    $entityType = $this->createMock(EntityTypeInterface::class);
    $entityType->expects($this->once())
      ->method('entityClassImplements')
      ->with(ContentEntityInterface::class)
      ->willReturn(TRUE);
    // Create a mock entity type manager that returns our entity type.
    $entityTypeManager = $this->createMock(EntityTypeManagerInterface::class);
    $entityTypeManager->expects($this->once())
      ->method('getDefinitions')
      ->willReturn([
      'node' => $entityType,
    ]);
    // Create a container WITHOUT the comment module (service) installed.
    $container = new ContainerBuilder();
    $container->set('entity_type.manager', $entityTypeManager);
    \Drupal::setContainer($container);
    // Create the hooks class.
    $historyTokensHooks = new HistoryTokensHooks();
    $result = $historyTokensHooks->tokenInfo();
    $this->assertEquals([
      'tokens' => [],
    ], $result);
  }

}