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I'm trying to setup a method on a Mocked object that is async.

As the object is not crucial to my actual test, i just want the method to return an integer, which is its return type.

My code is below :- 

_legacyUnitOfWorkMock.Setup(x => x.CommitAsync()).Returns(Task.FromResult<int>(1));

However, I get the following error message :-

System.NotSupportedException : Invalid setup on a non-virtual (overridable in VB) member: x => x.CommitAsync()

Can anyone point out why this code would fail?

Derek
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    Can you post more about what _legacyUnitOfWorkMock is, In particular the CommitAsync signature? – NikolaiDante Jan 12 '16 at 11:50
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    When the method is not [virtual](http://stackoverflow.com/questions/1962010/moq-invalid-setup-on-a-non-overridable-member-x-x-getbytitleasdf), then it can't be mocked with Moq. – Daniel Dušek Jan 12 '16 at 11:56

1 Answers1

4

Have you tried:

_legacyUnitOfWorkMock.Setup(x => x.CommitAsync()).ReturnsAsync(1);

Or

_legacyUnitOfWorkMock.Setup(x => x.CommitAsync()).Returns(Task.FromResult(1));
Pedro Benevides
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