Is it possible for a mocked method to return its argument?

[Barry Kaplan]

Something like

builder.transitionTo(state) >> state

The second state is not declared at runtime

I've also tried things like

def state
builder.transitionTo({state = it}) >> state

But this returns null.

[Barry Kaplan]

I supposed I should mention that the instance "state" is created by
the code under tests -- the test itself cannot create or initialize
this value.

[Peter Niederwieser]

Hi Barry,

yes it's possible. The result generator is passed the list of
arguments for the invocation. Hence you can do: builder.transitionTo
(_) >> { it[0] }

Your way of capturing 'state' should also work. You just have to defer
evaluation of the result:

def state
builder.transitionTo({state = it; true}) >> { state }

Inserting 'true' makes sure that the interaction always matches.
Otherwise it would only match if 'state' evaluated to
'true' (according to Groovy truth).

Hope this helps.

Cheers,
Peter

[Barry Kaplan]

Very very nice. Thanks!