/**
  * Tests that Container::initialized works correctly.
  * @covers ::initialized()
  */
 public function test_initialized()
 {
     $this->assertFalse($this->container->initialized('late.service'), 'Late service is not initialized.');
     $this->container->get('late.service');
     $this->assertTrue($this->container->initialized('late.service'), 'Late service is initialized after it was gotten.');
 }