protected virtual async Task <bool> Navigate(MvxViewModelRequest request, IMvxViewModel viewModel,
IMvxBundle?presentationBundle = null, CancellationToken cancellationToken = default)
{
ValidateArguments(request, viewModel);
var args = new MvxNavigateEventArgs(viewModel, NavigationMode.Show, cancellationToken);
OnWillNavigate(this, args);
if (args.Cancel)
{
return(false);
}
var hasNavigated = await ViewDispatcher.ShowViewModel(request).ConfigureAwait(false);
if (!hasNavigated)
{
return(false);
}
if (viewModel.InitializeTask?.Task != null)
{
await viewModel.InitializeTask.Task.ConfigureAwait(false);
}
OnDidNavigate(this, args);
return(true);
}
public void Test_FailedViewModel()
{
_fixture.ClearAll();
var mockLocator = new Mock <IMvxViewModelLocator>();
mockLocator.Setup(
m => m.Load(It.IsAny <Type>(), It.IsAny <IMvxBundle>(), It.IsAny <IMvxBundle>(), It.IsAny <IMvxNavigateEventArgs>()))
.Throws <MvxException>();
var mockCollection = new Mock <IMvxViewModelLocatorCollection>();
mockCollection.Setup(m => m.FindViewModelLocator(It.IsAny <MvxViewModelRequest>()))
.Returns(() => mockLocator.Object);
var parameters = new Dictionary <string, string> {
{ "foo", "bar" }
};
var request = new MvxViewModelRequest <Test2ViewModel>(new MvxBundle(parameters), null);
var state = new MvxBundle();
var loader = new MvxViewModelLoader(mockCollection.Object);
var args = new MvxNavigateEventArgs(NavigationMode.Show);
Assert.Throws <MvxException>(() =>
{
var viewModel = loader.LoadViewModel(request, state, args);
});
}
public async Task Test_NormalViewModel()
{
_fixture.ClearAll();
IMvxViewModel outViewModel = new Test2ViewModel();
var mockLocator = new Mock <IMvxViewModelLocator>();
mockLocator.Setup(
m => m.Load(It.IsAny <Type>(), It.IsAny <IMvxBundle>(), It.IsAny <IMvxBundle>(), It.IsAny <IMvxNavigateEventArgs>()))
.Returns(() => outViewModel);
var mockCollection = new Mock <IMvxViewModelLocatorCollection>();
mockCollection.Setup(m => m.FindViewModelLocator(It.IsAny <MvxViewModelRequest>()))
.Returns(() => mockLocator.Object);
var parameters = new Dictionary <string, string> {
{ "foo", "bar" }
};
var request = new MvxViewModelRequest <Test2ViewModel>(new MvxBundle(parameters), null);
var state = new MvxBundle();
var loader = new MvxViewModelLoader(mockCollection.Object);
var args = new MvxNavigateEventArgs(NavigationMode.Show);
var viewModel = await loader.LoadViewModel(request, state, args).ConfigureAwait(false);
Assert.Equal(outViewModel, viewModel);
}
public void Test_WithReloadState()
{
_fixture.ClearAll();
_fixture.Ioc.RegisterSingleton <IMvxStringToTypeParser>(new MvxStringToTypeParser());
var testThing = new MockTestThing();
_fixture.Ioc.RegisterSingleton <ITestThing>(testThing);
var initBundleObject = new BundleObject
{
TheBool1 = false,
TheBool2 = true,
TheGuid1 = Guid.NewGuid(),
TheGuid2 = new Guid(123, 10, 444, 1, 2, 3, 4, 5, 6, 7, 8),
TheInt1 = 123,
TheInt2 = 456,
TheString1 = "Hello World",
TheString2 = null
};
var initBundle = new MvxBundle();
initBundle.Write(initBundleObject);
var reloadBundleObject = new BundleObject
{
TheBool1 = true,
TheBool2 = true,
TheGuid1 = Guid.NewGuid(),
TheGuid2 = new Guid(1123, 10, 444, 1, 2, 3, 4, 5, 6, 7, 8),
TheInt1 = 1234,
TheInt2 = 4567,
TheString1 = "Foo Bar",
TheString2 = null
};
var reloadBundle = new MvxBundle();
reloadBundle.Write(reloadBundleObject);
var toTest = new MvxDefaultViewModelLocator();
var args = new MvxNavigateEventArgs(NavigationMode.Show);
IMvxViewModel viewModel = toTest.Load(typeof(Test1ViewModel), initBundle, reloadBundle, args);
Assert.NotNull(viewModel);
var typedViewModel = (Test1ViewModel)viewModel;
Assert.Equal(initBundle, typedViewModel.BundleInit);
Assert.Equal(reloadBundle, typedViewModel.BundleState);
Assert.Equal(testThing, typedViewModel.Thing);
Assert.Equal(initBundleObject, typedViewModel.TheInitBundleSet);
Assert.Equal(reloadBundleObject, typedViewModel.TheReloadBundleSet);
Assert.Equal(initBundleObject.TheGuid1, typedViewModel.TheInitGuid1Set);
Assert.Equal(initBundleObject.TheGuid2, typedViewModel.TheInitGuid2Set);
Assert.Equal(initBundleObject.TheString1, typedViewModel.TheInitString1Set);
Assert.Equal(reloadBundleObject.TheGuid1, typedViewModel.TheReloadGuid1Set);
Assert.Equal(reloadBundleObject.TheGuid2, typedViewModel.TheReloadGuid2Set);
Assert.Equal(reloadBundleObject.TheString1, typedViewModel.TheReloadString1Set);
Assert.True(typedViewModel.StartCalled);
}
public void Test_LoaderForNull()
{
_fixture.ClearAll();
var request = new MvxViewModelRequest <MvxNullViewModel>(null, null);
var state = new MvxBundle();
var loader = new MvxViewModelLoader(null);
var args = new MvxNavigateEventArgs(NavigationMode.Show);
var viewModel = loader.LoadViewModel(request, state, args);
Assert.IsType <MvxNullViewModel>(viewModel);
}
public void Test_MissingDependency()
{
_fixture.ClearAll();
var bundle = new MvxBundle();
var toTest = new MvxDefaultViewModelLocator();
var args = new MvxNavigateEventArgs(NavigationMode.Show);
Assert.Throws <MvxException>(() =>
{
IMvxViewModel viewModel = toTest.Load(typeof(Test4ViewModel), bundle, null, args);
});
}
public void Test_FailingDependency()
{
_fixture.ClearAll();
_fixture.Ioc.RegisterSingleton <ITestThing>(() => new FailingMockTestThing());
var bundle = new MvxBundle();
var toTest = new MvxDefaultViewModelLocator();
var args = new MvxNavigateEventArgs(NavigationMode.Show);
Assert.Throws <MvxException>(() =>
{
IMvxViewModel viewModel = toTest.Load(typeof(Test4ViewModel), bundle, null, args);
});
}
public void Test_FailingInitialisation()
{
_fixture.ClearAll();
var testThing = new MockTestThing();
_fixture.Ioc.RegisterSingleton <ITestThing>(testThing);
var bundle = new MvxBundle();
var navigationService = _fixture.Ioc.Resolve <IMvxNavigationService>();
var toTest = new MvxDefaultViewModelLocator(navigationService);
var args = new MvxNavigateEventArgs(NavigationMode.Show);
Assert.Throws <MvxException>(() =>
{
IMvxViewModel viewModel = toTest.Load(typeof(Test4ViewModel), bundle, null, args);
});
}
public async Task Test_FailedViewModelLocatorCollection()
{
_fixture.ClearAll();
var mockCollection = new Mock <IMvxViewModelLocatorCollection>();
mockCollection.Setup(m => m.FindViewModelLocator(It.IsAny <MvxViewModelRequest>()))
.Returns(() => null);
var parameters = new Dictionary <string, string> {
{ "foo", "bar" }
};
var request = new MvxViewModelRequest <Test2ViewModel>(new MvxBundle(parameters), null);
var state = new MvxBundle();
var loader = new MvxViewModelLoader(mockCollection.Object);
var args = new MvxNavigateEventArgs(NavigationMode.Show);
await Assert.ThrowsAsync <MvxException>(async() =>
{
var viewModel = await loader.LoadViewModel(request, state, args).ConfigureAwait(false);
}).ConfigureAwait(false);
}
