Behavior of the Mocking API Methods

The following methods throw a DesignModeException when you call them with the Design property set to InterfaceOnly:

• Isolate.Fake.StaticMethods()

• Isolate.Fake.StaticConstructor()

• All Isolate.NonPublic methods

• All Isolate.Swap methods

In addition, the following methods throw a DesignModeException within conditions:

Methods	Condition	Behavior	Throws Exception When...
Isolate.Fake.Instance<T>	T has some or all virtual methods	Only virtual methods can be faked and verified. The default recursive fake behavior is applied if the returned object can also be faked.	T is a sealed object All methods are non-virtual.
Isolate.Fake.Dependencies<T>	All argument types of T’s constructors have some virtual methods	Arguments are faked as with Fake.Instance<>. Object is created and returned.	All dependencies are sealed or have only non-virtual methods.
Isolate.WhenCalled…	Virtual methods	Can set any behavior	Called on non-virtual methods
Isolate.Verify…	Virtual methods	Can verify the behavior	Called on non-virtual methods