Mock object returning a list of mocks with Moq

mocking, moq, unit-testing

Solution

In your `_cleanUpTaskFactory` mock you could simply do something like the following:

var mocks = new List<Mock<ITask>>();
for(var i = 0; i < 10; i++){
    var mock = new Mock<ITask>();
    mock.Setup(t => t.Execute()).Verifiable();
    mocks.Add(mock);
}

_cleanUpTaskFactoryMock.Setup(f => f.GetTasks()).Returns(mocks.Select(m => m.Object).Tolist());

Now make sure to keep a reference to the `mocks` list, and when you done with your testing you iterate over all the mocks and call `Verify()` like so:

mocks.ForEach(m => m.Verify());

Problem

I am trying to test the following code ``` public void CleanUp() { List<ITask> tasks = _cleanupTaskFactory.GetTasks(); //Make sure each task has the task.Execute() method called on them } ``` In my test I create a mocked implementation of _cleanupTaskFactory, and I want to stub the GetTasks() method to return a type: ``` List<Mock<ITask>> ``` ...but the compiler won't accept that as a return value. My goal is to ensure that each task returned has the .Execute() method called on it using the Verify() MoQ method. How can I assert that each task gets executed?

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