Tell a mock to return a parameter

I'm assuming you want to test something that uses the salad store...

//Arrange
SaladStore fakeStore = Isolate.Fake.Instance<SaladStore>();
Isolate.Swap.NextInstance<SaladStore>().With(fakeStore);

//Act
SomethingUsingSaladStore.CreateSaladWith("sunflower seeds");

//Assert
Isolate.Verify.WasCalledWithExactArguments(() => fakeStore.MakeFruitSalad("sunflower seeds"));

HTH

Hi,

:!: If you wanted the Save method to return the passed in argument ("salad"),
try looking for something called DynamicReturnValue. it should enable you to do that.

DynamicReturnValue - yes, I'd looked at this, but didn't quite see how to make it do what I want - I shall read the instructions on it more carefully, thanks.

boo - What the SaladStore would typically do is persist the object (possibly setting an Id on it, but that being a persistance thing it's not really important to the 'makeFruitSalad' method).

I'm testing the 'makeFruitSalad' method - and I don't want the SaladStore to hit the database, it can mock the behaviour by simply returning the same object it was given.

Perhaps I'm coming at this the wrong way, and I should capture and verify the object passed to the fake salad store, rather than the salad returned from the makeSalad method...

In the next release of Typemock Isolator (5.3.0) we've added an API call to AA that enable the user to run an action (using the parameters passed) instead of the faked behavior.

I think that this API (called DoInstead) should solve your problem.

If you can afford to wait a bit - this release should be available soon