public void CanExecuteReturnsTrueIfDisplayListIsEmpty()
{
IImageComparison mockImageComparison = MockRepository.GenerateMock<IImageComparison>();
IMainWindowViewModel mockMainWindowViewModel = MockRepository.GenerateMock<IMainWindowViewModel>();
mockMainWindowViewModel.Expect(a => a.DisplayList).Return(new List<SourceImageFile>());
BeginScanCommand sut = new BeginScanCommand(mockImageComparison, mockMainWindowViewModel);
Assert.True(sut.CanExecute(null));
}
public void InvokingExecuteCallsComparisonServiceWithJpgFilesFromSuppliedPath()
{
IImageComparison mockImageComparison = MockRepository.GenerateMock<IImageComparison>();
IMainWindowViewModel mockMainWindowViewModel = MockRepository.GenerateMock<IMainWindowViewModel>();
mockImageComparison
.Expect(mock => mock
.Compare(Arg<ReadOnlyCollection<FileInfo>>
.Matches(coll =>
(coll.Count == 7) &&
(coll[0].Name == "TestFileA.jpg")
)
)
)
.Return(null);
BeginScanCommand sut = new BeginScanCommand(mockImageComparison, mockMainWindowViewModel);
sut.Execute(Path.GetFullPath(@".\TestImages"));
mockImageComparison.VerifyAllExpectations();
}
public void InvokingExecuteSetsResultValueOnViewModel()
{
IImageComparison mockImageComparison = MockRepository.GenerateMock<IImageComparison>();
mockImageComparison.Expect(
mock => mock.Compare(
Arg<ReadOnlyCollection<FileInfo>>.Matches(coll => (coll.Count == 7) && (coll[0].Name == "TestFileA.jpg"))))
.Return(
new Dictionary<FileInfo, ReadOnlyCollection<FileInfo>>
{
{
new FileInfo(@".\TestImages\TestFileA.jpg"),
new ReadOnlyCollection<FileInfo>(
new List<FileInfo> { new FileInfo(@".\TestImages\TestFileA.jpg") }
)
}
}
);
IMainWindowViewModel mockMainWindowViewModel = MockRepository.GenerateMock<IMainWindowViewModel>();
BeginScanCommand sut = new BeginScanCommand(mockImageComparison, mockMainWindowViewModel);
sut.Execute(Path.GetFullPath(@".\TestImages"));
mockMainWindowViewModel.AssertWasCalled(
vm => vm.DisplayList = Arg<List<SourceImageFile>>.Matches(list => list.Count == 1));
}
public void InvokingExecuteWithNullParameterViolatesConstraint()
{
IImageComparison mockImageComparison = MockRepository.GenerateMock<IImageComparison>();
IMainWindowViewModel mockMainWindowViewModel = MockRepository.GenerateMock<IMainWindowViewModel>();
BeginScanCommand sut = new BeginScanCommand(mockImageComparison, mockMainWindowViewModel);
XUnitHelper.ViolatesConstraint(() => sut.Execute(null), "parameter != null");
}
