public void InstanceReturnsNullForOtherObjectTypes()
{
TestableGetInstanceForm form = new TestableGetInstanceForm(typeof(ConcreteClass));
form.OnObjectCreated(new OtherTypeOfObject());
Assert.IsNull(form.Instance);
}
public void InstanceReturnsTypesThatImplementAnInterface()
{
TestableGetInstanceForm form = new TestableGetInstanceForm(typeof(IInterface));
MyInterface implementor = new MyInterface();
form.OnObjectCreated(implementor);
Assert.AreSame(implementor, form.Instance);
}
public void InstanceReturnsDerivedTypes()
{
TestableGetInstanceForm form = new TestableGetInstanceForm(typeof(ConcreteClass));
DerivedClass derived = new DerivedClass();
form.OnObjectCreated(derived);
Assert.AreSame(derived, form.Instance);
}