public void ViewModel_VerifyPropertyChangeErrorTestCase()
{
string text = "error";
GivenInitViewModel()
.AndAsync("navigate page", async viewModel => await NavigateAndWaitLoadPageAsync <SetPropertyPage, SetPropertyViewModel>(viewModel))
.And("Subscribe to event", page =>
{
var viewModel = page.DataContext.HasTypeAndGetValue <SetPropertyViewModel>();
viewModel.VerifyPropertyChange += (sender, e) => e.AddError(new MvvmFrameErrorDetail {
Code = "InvalidData"
});
return(page);
})
.When("Change text", page =>
{
page.tbViewModel.Text = text;
return(page.DataContext.HasTypeAndGetValue <SetPropertyViewModel>());
})
.Then("Check result", viewModel =>
{
Assert.IsNull(viewModel.TextTest, "text must be null");
Assert.AreEqual(1, viewModel.OnErrorsCallCounter, $"method '{nameof(SetPropertyModel.OnErrors)}' should be called");
Assert.IsNotNull(viewModel.Details, "collection should not be empty");
Assert.AreEqual(1, viewModel.Details.Count, "there must be one item in the collection");
MvvmFrameErrorDetail detail = viewModel.Details[0];
Assert.AreEqual("InvalidData", detail.Code, "the error code must be different");
})
.RunWindow(Timeouts.Second.Five);
}
/// <summary> /// Remove error /// </summary> /// <param name="detail"></param> public void RemoveError(MvvmFrameErrorDetail detail) => _errors.Remove(detail);
/// <summary> /// Add error /// </summary> /// <param name="detail"></param> public void AddError(MvvmFrameErrorDetail detail) => _errors.Add(detail);
