public async Task Navigate_Raises_NavigationStateChangedEvent()
{
var tcs = new TaskCompletionSource<bool>();
var eventAggregator = new EventAggregator();
eventAggregator.GetEvent<NavigationStateChangedEvent>().Subscribe((args) => tcs.SetResult(args.StateChange == StateChangeType.Forward));
await DispatcherHelper.ExecuteOnUIThread(() =>
{
var frame = new FrameFacadeAdapter(new Frame(), eventAggregator);
var sessionStateService = new MockSessionStateService();
sessionStateService.GetSessionStateForFrameDelegate = (currentFrame) => new Dictionary<string, object>();
var navigationService = new FrameNavigationService(frame, (pageToken) => typeof(MockPage), sessionStateService);
navigationService.Navigate("Mock", 1);
});
await Task.WhenAny(tcs.Task, Task.Delay(200));
if (tcs.Task.IsCompleted)
{
Assert.IsTrue(tcs.Task.Result);
}
else
{
Assert.Fail("NavigationStateChangedEvent event wasn't raised within 200 ms.");
}
}
public async Task Navigate_To_Subsequent_Page_Back_Button_Visible()
{
await DispatcherHelper.ExecuteOnUIThread(() =>
{
var eventAggregator = new EventAggregator();
var frame = new FrameFacadeAdapter(new Frame(), eventAggregator);
var sessionStateService = new MockSessionStateService();
sessionStateService.GetSessionStateForFrameDelegate = (currentFrame) => new Dictionary<string, object>();
var navigationService = new FrameNavigationService(frame, (pageToken) => typeof(MockPage), sessionStateService);
var deviceGestureService = new DeviceGestureService(eventAggregator);
deviceGestureService.UseTitleBarBackButton = true;
var navigationManager = SystemNavigationManager.GetForCurrentView();
// Reset back button visibility before running, can't do this in TestInitialize because CoreWindow sometimes isn't ready
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = AppViewBackButtonVisibility.Collapsed;
Assert.AreEqual(AppViewBackButtonVisibility.Collapsed, navigationManager.AppViewBackButtonVisibility);
navigationService.Navigate("Mock", 1);
Assert.AreEqual(AppViewBackButtonVisibility.Collapsed, navigationManager.AppViewBackButtonVisibility);
navigationService.Navigate("Mock", 2);
Assert.AreEqual(AppViewBackButtonVisibility.Visible, navigationManager.AppViewBackButtonVisibility);
});
}
public async Task Navigate_To_Page_With_Null_Aggregator_Still_Works()
{
await DispatcherHelper.ExecuteOnUIThread(() =>
{
var frame = new FrameFacadeAdapter(new Frame());
var sessionStateService = new MockSessionStateService();
sessionStateService.GetSessionStateForFrameDelegate = (currentFrame) => new Dictionary<string, object>();
var navigationService = new FrameNavigationService(frame, (pageToken) => typeof(MockPage), sessionStateService);
var navigationManager = SystemNavigationManager.GetForCurrentView();
// Reset back button visibility before running, can't do this in TestInitialize because CoreWindow sometimes isn't ready
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = AppViewBackButtonVisibility.Collapsed;
bool result = navigationService.Navigate("Mock", 1);
Assert.IsTrue(result);
});
}
public async Task Set_State_Raises_NavigationStateChangedEvent()
{
var tcs = new TaskCompletionSource<bool>();
var eventAggregator = new EventAggregator();
eventAggregator.GetEvent<NavigationStateChangedEvent>().Subscribe((args) => tcs.SetResult(true));
await DispatcherHelper.ExecuteOnUIThread(() =>
{
var frame = new FrameFacadeAdapter(new Frame(), eventAggregator);
frame.SetNavigationState("1,0");
});
await Task.WhenAny(tcs.Task, Task.Delay(200));
if (tcs.Task.IsCompleted)
{
Assert.IsTrue(tcs.Task.Result);
}
else
{
Assert.Fail("NavigationStateChangedEvent event wasn't raised within 200 ms.");
}
}
public async Task Navigate_To_Page_With_UseTitleBarBackButton_False_Does_Not_Change_Back_Button_Visibility()
{
await DispatcherHelper.ExecuteOnUIThread(() =>
{
var eventAggregator = new EventAggregator();
var frame = new FrameFacadeAdapter(new Frame());
var sessionStateService = new MockSessionStateService();
sessionStateService.GetSessionStateForFrameDelegate = (currentFrame) => new Dictionary<string, object>();
var navigationService = new FrameNavigationService(frame, (pageToken) => typeof(MockPage), sessionStateService);
var deviceGestureService = new DeviceGestureService();
deviceGestureService.EnableTitleBarBackButton(eventAggregator);
var navigationManager = SystemNavigationManager.GetForCurrentView();
// Reset back button visibility before running, can't do this in TestInitialize because CoreWindow sometimes isn't ready
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = AppViewBackButtonVisibility.Collapsed;
// If it's collapsed and we navigate, it stays collapsed
Assert.AreEqual(AppViewBackButtonVisibility.Collapsed, navigationManager.AppViewBackButtonVisibility);
navigationService.Navigate("Mock", 1);
Assert.AreEqual(AppViewBackButtonVisibility.Collapsed, navigationManager.AppViewBackButtonVisibility);
// If it's visible and our back stack is emptied, it stays visible
navigationManager.AppViewBackButtonVisibility = AppViewBackButtonVisibility.Visible;
navigationService.ClearHistory();
Assert.AreEqual(AppViewBackButtonVisibility.Visible, navigationManager.AppViewBackButtonVisibility);
});
}