How to verify that there was no interaction with dependency in a test

Question

I want my test to verify that there was no interaction with a dependency not just individual method or property. Is there a way to do that easily?

@GabrielNegut: That would work if there is no null check in method. — epitka, Jan 08 '19 at 09:35
That´s why we assume questions to include some code showing what you´ve tried and where you´re stuck. — MakePeaceGreatAgain, Jan 08 '19 at 09:38
nunit has `VerifyNoOtherCalls`, which would do what you want. I'm not sure about xunit — Robin Bennett, Jan 08 '19 at 09:43
@RobinBennett Thanks, your comment led me to find answer on SO :) — epitka, Jan 08 '19 at 09:51
@RobinBennett `VerifyNoOtherCalls` is a Moq method, it has nothing to do with nunit ;) — Thomas Levesque, Jan 08 '19 at 13:00

score 2 · Accepted Answer · edited Jan 08 '19 at 22:45

2

With FakeItEasy you can create a strict mock for your dependency and not define any methods/properties.

var foo = A.Fake<IFoo>(x => x.Strict());

Any attempts to access foo members will result in an ExpectationException.

edited Jan 08 '19 at 22:45

Blair Conrad

answered Jan 08 '19 at 09:50

Gabriel Negut

score 1 · Answer 2 · answered Jan 08 '19 at 12:59

1

Gabriel's answer is fine. Another option, if you prefer to check explicitly, it this:

A.CallTo(theDependency).MustNotHaveHappened();

answered Jan 08 '19 at 12:59

Thomas Levesque

2 Answers2