HttpExceptionNormalizer example

$container = $this->prophesize(ContainerInterface::class);
    $container->get('request_stack')->willReturn($request_stack->reveal());
    $config = $this->prophesize(ImmutableConfig::class);
    $config->get('error_level')->willReturn(ERROR_REPORTING_DISPLAY_VERBOSE);
    $config_factory = $this->prophesize(ConfigFactory::class);
    $config_factory->get('system.logging')->willReturn($config->reveal());
    $container->get('config.factory')->willReturn($config_factory->reveal());
    \Drupal::setContainer($container->reveal());
    $exception = new AccessDeniedHttpException('lorem', NULL, 13);
    $current_user = $this->prophesize(AccountInterface::class);
    $current_user->hasPermission('access site reports')->willReturn(TRUE);
    $normalizer = new HttpExceptionNormalizer($current_user->reveal());
    $normalized = $normalizer->normalize($exception, 'api_json');
    $normalized = $normalized->getNormalization();
    $error = $normalized[0];
    $this->assertNotEmpty($error['meta']);
    $this->assertNotEmpty($error['source']);
    $this->assertSame('13', $error['code']);
    $this->assertSame('403', $error['status']);
    $this->assertEquals('Forbidden', $error['title']);
    $this->assertEquals('lorem', $error['detail']);
    $this->assertArrayHasKey('trace', $error['meta']);
    $this->assertNotEmpty($error['meta']['trace']);