public void StartsOnFirstviewModel()
{
NamedViewModelMock[] namedViewModels = new NamedViewModelMock[2]
{
new NamedViewModelMock("0"),
new NamedViewModelMock("1")
};
var applicationVm = new ApplicationViewModel(namedViewModels);
Assert.Same(namedViewModels[0], applicationVm.CurrentViewModel);
}
public void ChangeViewModel()
{
NamedViewModelMock[] namedViewModels = new NamedViewModelMock[2]
{
new NamedViewModelMock("0"),
new NamedViewModelMock("1")
};
var applicationVm = new ApplicationViewModel(namedViewModels);
applicationVm.ChangeViewModel(namedViewModels[1]);
Assert.Same(namedViewModels[1], applicationVm.CurrentViewModel);
}
public void ChangeViewModelOnlyIfExists()
{
NamedViewModelMock[] namedViewModels = new NamedViewModelMock[2]
{
new NamedViewModelMock("0"),
new NamedViewModelMock("1")
};
var applicationVm = new ApplicationViewModel(namedViewModels);
NamedViewModelMock badViewModel = new NamedViewModelMock("2");
Assert.Throws <ArgumentOutOfRangeException>(
() => { applicationVm.ChangeViewModel(badViewModel); }
);
}