public async Task Creating_ViewModelBeingInitializable_InitializesViewModel_WithPassedParameters()
{
// Arrange
var viewModel = new InitializibleMockViewModel();
var initParam1 = "Hello";
var initParam2 = 12345;
_serviceLocatorMock.Setup(f => f.GetService(It.IsAny <Type>())).Returns(viewModel);
// Act
var actualViewModel = await _sut.CreateAsync <InitializibleMockViewModel>(initParam1, initParam2);
// Assert
Assert.IsNotNull(actualViewModel);
Assert.AreEqual(viewModel, actualViewModel);
Assert.IsTrue(actualViewModel.WasInitialized);
Assert.IsNotNull(actualViewModel.InitParams);
Assert.AreEqual(initParam1, actualViewModel.InitParams[0]);
Assert.AreEqual(initParam2, actualViewModel.InitParams[1]);
}
public async Task <Page> NavigateToAsync <T>(CancellationToken cancellationToken, Action <T> preInitAction) where T : ViewModel
{
Type vmType = typeof(T);
Type pageType;
if (!RegistryByViewModel.TryGetValue(vmType, out pageType))
{
throw new InvalidOperationException();
}
Page page = (Page)await PageFactory.CreateAsync(pageType);
T viewModel = await ViewModelFactory.CreateAsync <T>();
preInitAction?.Invoke(viewModel);
page.BindingContext = viewModel;
await this.NavigationPage.PushAsync(page);
await viewModel.InitializeAsync(CancellationToken.None);
return(page);
}