DependencySerializationTestDummy example

/** * @covers ::__sleep * @covers ::__wakeup */
  public function testSerialization() {
    // Create a pseudo service and dependency injected object.     $service = new \stdClass();
    $container = TestKernel::setContainerWithKernel();
    $container->set('test_service', $service);
    $this->assertSame($container, $container->get('service_container'));

    $dependencySerialization = new DependencySerializationTestDummy($service);
    $dependencySerialization->setContainer($container);

    $string = serialize($dependencySerialization);
    /** @var \Drupal\Tests\Core\DependencyInjection\DependencySerializationTestDummy $dependencySerialization */
    $dependencySerialization = unserialize($string);

    $this->assertTrue($container->has(ReverseContainer::class));
    $this->assertSame($service, $dependencySerialization->service);
    $this->assertSame($container, $dependencySerialization->container);
    $this->assertEmpty($dependencySerialization->getServiceIds());
  }

}