AutoFixture.Freeze IEnumerable of Mocks

Question

I'm very comfortable using AutoFixture.Freeze<Mock<IViolationChecker>>() to setup a class for testing with .Verify() and .Setup().

However, in the class I'm working on takes an enumerable of IViolationChecker

private readonly IEnumerable<IViolationChecker> _violationCheckers;

How can I use AutoFixture.Freeze to define my list of IViolationChecker? I've used

var violationCheckers = AutoFixture.Freeze<Mock<IEnumerable<IViolationChecker>>>();

But I'm not sure how I would write the .Verify() or .Setup().

Answer 1

An option would be to freeze the collection and use Mock.Get for each item to get the mocks for setup and verification.

//Arrange
var violationCheckers = AutoFixture.Freeze<IEnumerable<IViolationChecker>>();
var mocks = violationCheckers.Select(item => Mock.Get(item));
foreach (var mock in mocks) {
    mock.Setup(_ => _.SomethingHere()).Verifiable(); //setup mock as desired.
}

//...

//Act
//...exercise member under test

//Assert
foreach(var mock in mocks) {
    mock.Verify(_ => /* some predicate*/, Times.Once);
    //OR
    //mock.Verify();
}

//...