module_load_include example

class ModuleLegacyTest extends KernelTestBase {

  /** * Test deprecation of module_load_include() function. */
  public function testModuleLoadInclude() {
    $this->assertFalse($this->container->get('module_handler')->moduleExists('module_test'), 'Ensure module is uninstalled so we test the ability to include uninstalled code.');
    $this->expectDeprecation('module_load_include() is deprecated in drupal:9.4.0 and is removed from drupal:11.0.0. Instead, you should use \Drupal::moduleHandler()->loadInclude(). Note that including code from uninstalled extensions is no longer supported. See https://www.drupal.org/project/drupal/issues/697946');
    $filename = module_load_include('inc', 'module_test', 'module_test.file');
    $this->assertStringEndsWith("module_test.file.inc", $filename);

  }

}