public void ShouldSetTheServiceLocator() { //Arrange ServiceLocator.SetLocatorProvider(() => null); var containerExtension = new AutofacExtension(registrationHelper, options); containerExtension.Run(); //Act containerExtension.SetServiceLocator(); var result = ServiceLocator.Current; //Assert Assert.IsNotNull(result); Assert.IsInstanceOfType(result, typeof(AutofacServiceLocator)); }