public void OnNavigatingTo__DisplaysErrorAlertOnSignInException(string username)
{
// ARRANGE
var parameters = new NavigationParameters
{
{ nameof(username), username },
};
var mockNavigationService = new Mock <INavigationService>();
var mockDialogService = new Mock <IPageDialogService>();
mockDialogService.Setup(d => d.DisplayAlertAsync(It.IsAny <string>(), It.IsAny <string>(), It.IsAny <string>()))
.Returns(Task.CompletedTask);
var mockBlikService = new Mock <IBlikService>();
mockBlikService.Setup(s => s.GetBlikCodeAsync(It.IsAny <UserDto>()))
.Throws <ArgumentException>();
var viewModel = new BlikCodePageViewModel(mockNavigationService.Object, mockBlikService.Object, mockDialogService.Object);
// ACT
Should.NotThrow(() => viewModel.OnNavigatingTo(parameters));
// ASSERT
mockDialogService.Verify(d => d.DisplayAlertAsync(It.IsAny <string>(), It.IsAny <string>(), It.IsAny <string>()), Times.Once);
}
public void OnNavigatingTo__ShouldNavigateBackOnInvalidCredentials(string username)
{
// ARRANGE
var expectedBlikCode = 100200;
var parameters = new NavigationParameters
{
{ nameof(username), username },
};
var mockNavigationService = new Mock <INavigationService>();
var mockDialogService = new Mock <IPageDialogService>();
var mockBlikService = new Mock <IBlikService>();
mockBlikService.Setup(s => s.GetBlikCodeAsync(It.IsAny <UserDto>()))
.ReturnsAsync(expectedBlikCode);
var viewModel = new BlikCodePageViewModel(mockNavigationService.Object, mockBlikService.Object, mockDialogService.Object);
// ACT
Should.NotThrow(() => viewModel.OnNavigatingTo(parameters));
// ASSERT
mockNavigationService.Verify(n => n.GoBackAsync(), Times.Once);
}
public void OnNavigatingTo__ShouldParseNavigationParametersCorrectly(string username)
{
// ARRANGE
var expectedBlikCode = 100200;
var parameters = new NavigationParameters
{
{ nameof(username), username },
};
var mockNavigationService = new Mock <INavigationService>();
var mockDialogService = new Mock <IPageDialogService>();
var mockBlikService = new Mock <IBlikService>();
mockBlikService.Setup(s => s.GetBlikCodeAsync(It.IsAny <UserDto>()))
.ReturnsAsync(expectedBlikCode);
var viewModel = new BlikCodePageViewModel(mockNavigationService.Object, mockBlikService.Object, mockDialogService.Object);
// ACT
Should.NotThrow(() => viewModel.OnNavigatingTo(parameters));
// ASSERT
viewModel.BlikCode.ShouldBe(expectedBlikCode);
}