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PORhino Mocks Error: Previous method 'IEnumerator.MoveNext();' requires a return value or an exception to throw
 

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  1. PORhino Mocks Error: Previous method 'IEnumerator.MoveNext();' requires a return value or an exception to throw
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    <p>I have the following test code:</p> <pre><code>parentViewModel = MockRepository.GenerateMock&lt;IParentViewModel&gt;(); parentViewModel.Expect(x =&gt; x.GetPropertyValue&lt;IEnumerable&lt;Milestone&gt;&gt;("JobMilestones")).Return(new Milestone[0]); viewModel = new JobPenaltiesViewModel(j, new Penalty[0], _opContext, parentViewModel); Assert.That(viewModel.Milestones.Count(), Is.EqualTo(0)); parentViewModel.VerifyAllExpectations(); List&lt;string&gt; propsChanged = new List&lt;string&gt;(); viewModel.PropertyChanged += (s, e) =&gt; propsChanged.Add(e.PropertyName); parentViewModel.Raise(x =&gt; x.PropertyChanged += null, parentViewModel, new PropertyChangedEventArgs("JobMilestones")); AssertPropertiesChangedAsExepected(propsChanged, 1, "Milestones"); Milestone m1 = GenerateMilestone(j); List&lt;Milestone&gt; milestones1 = new List&lt;Milestone&gt; { m1 }; parentViewModel.Expect(x =&gt; x.GetPropertyValue&lt;IEnumerable&lt;Milestone&gt;&gt;("JobMilestones")).Return(milestones1).Repeat.Any(); IEnumerable&lt;Milestone&gt; milestones = viewModel.Milestones; Assert.That(milestones.Count(), Is.EqualTo(1)); parentViewModel.VerifyAllExpectations(); </code></pre> <p>All the tests and assertions succeed up until the:</p> <pre><code>Assert.That(milestones.Count(), Is.EqualTo(1)); </code></pre> <p>That's where I get the exception:</p> <pre><code>Previous method 'IEnumerator.MoveNext();' requires a return value or an exception to throw. </code></pre> <p>I've tried everything I can think of, and my testing seems to indicate that the parentViewModel Mock is returning null, or an empty enumeration (i.e. when I use the debugger to inspect the returned value the 'Results View' says the enumeration returned no results).</p> <p>What am I missing here?</p>
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    1. PO
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    1. USDavid Hall
    1. USCodingGorilla
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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      1. PORhino Mocks Error: Previous method 'IEnumerator.MoveNext();' requires a return value or an exception to throw
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      1. VTUpMod
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      1. PORhino Mocks Error: Previous method 'IEnumerator.MoveNext();' requires a return value or an exception to throw
      1. This table or related slice is empty.
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      1. PORhino Mocks Error: Previous method 'IEnumerator.MoveNext();' requires a return value or an exception to throw
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    1. CODo you get the correct result if you try to do: `IEnumerable<Milestone> milestones = parentViewModel.Milestones;` and `Assert.That(milestones.Count(), Is.EqualTo(1))`? (Just verify where you loose m1)
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      1. PORhino Mocks Error: Previous method 'IEnumerator.MoveNext();' requires a return value or an exception to throw
      1. USsteenhulthin
    2. CONo, the `Assert.That(milestones.Count(), Is.EqualTo(1))` is the source of the exception. I never get to the `parentViewModel.VerifyAllExpectations()`
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      1. PORhino Mocks Error: Previous method 'IEnumerator.MoveNext();' requires a return value or an exception to throw
      1. USCodingGorilla
    3. COOk, I it was not very clear what I meant. I meant adding the lines just after `parentViewModel.Expect(x => x.GetPropertyValue<IEnumerable<Milestone>>("JobMilestones")).Return(milestones1).Repeat.Any();` so you assert on `parentViewModel` before asserting on `viewModel`. To verify that `m1` is in `parentViewModel.JobMileStones` (I wrote parentViewModel.MileStones in the first comment - my bad.).
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      1. PORhino Mocks Error: Previous method 'IEnumerator.MoveNext();' requires a return value or an exception to throw
      1. USsteenhulthin
 

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