public async Task DoesNotHandleBackButtonWhenNoNavStack(bool useMaui)
{
var root = new ContentPage {
Title = "Root"
};
var navPage = new TestNavigationPage(useMaui, root);
var result = await navPage.SendBackButtonPressedAsync();
Assert.False(result);
}
public async Task SendsBackButtonEventToCurrentPage(bool useMaui)
{
var current = new BackButtonPage();
var navPage = new TestNavigationPage(useMaui, current);
var emitted = false;
current.BackPressed += (sender, args) => emitted = true;
await navPage.SendBackButtonPressedAsync();
Assert.True(emitted);
}
public async Task NavigatesBackWhenBackButtonPressed(bool useMaui)
{
var root = new ContentPage {
Title = "Root"
};
var navPage = new TestNavigationPage(useMaui, root);
await navPage.PushAsync(new ContentPage());
var result = await navPage.SendBackButtonPressedAsync();
Assert.AreEqual(root, navPage.CurrentPage);
Assert.True(result);
}
public async Task DoesNotSendBackEventToNonCurrentPage(bool useMaui)
{
var current = new BackButtonPage();
var navPage = new TestNavigationPage(useMaui, current);
navPage.PushAsync(new ContentPage());
var emitted = false;
current.BackPressed += (sender, args) => emitted = true;
await navPage.SendBackButtonPressedAsync();
Assert.False(emitted);
}
public async Task DoesNotNavigatesBackWhenBackButtonPressedIfHandled(bool useMaui)
{
var root = new BackButtonPage {
Title = "Root"
};
var second = new BackButtonPage()
{
Handle = true
};
var navPage = new TestNavigationPage(useMaui, root);
await navPage.PushAsync(second);
await navPage.SendBackButtonPressedAsync();
Assert.AreEqual(second, navPage.CurrentPage);
}
