public void ContentShouldBeSetWhenReplacingFuture()
{
var target = new NavigationViewModel();
var first = CreatePage();
var second = CreatePage();
var third = CreatePage();
target.NavigateTo(first);
target.NavigateTo(second);
target.Back();
target.NavigateTo(third);
Assert.Equal(third, target.Content);
target.Back();
Assert.Equal(first, target.Content);
}
public void ContentShouldBeSetOnNavigatingBack()
{
var target = new NavigationViewModel();
var first = CreatePage();
var second = CreatePage();
target.NavigateTo(first);
target.NavigateTo(second);
target.Back();
Assert.Same(first, target.Content);
}
public void NavigatingToExistingPageInForwardHistoryShouldNotDisposePage()
{
var target = new NavigationViewModel();
var first = CreatePage();
var second = CreatePage();
target.NavigateTo(first);
target.NavigateTo(second);
target.Back();
target.NavigateTo(second);
second.DidNotReceive().Dispose();
}
public void ForwardCommandShouldBeEnabledOnNavigatingBack()
{
var target = new NavigationViewModel();
var first = CreatePage();
var second = CreatePage();
target.NavigateTo(first);
target.NavigateTo(second);
target.Back();
Assert.False(target.NavigateBack.CanExecute(null));
Assert.True(target.NavigateForward.CanExecute(null));
}
public void ContentShouldBeSetOnNavigatingForward()
{
var target = new NavigationViewModel();
var first = CreatePage();
var second = CreatePage();
target.NavigateTo(first);
target.NavigateTo(second);
target.Back();
target.Forward();
Assert.That(second, Is.SameAs(target.Content));
}
public void BackShouldCallDeactivatedOnOldPage()
{
var target = new NavigationViewModel();
var first = CreatePage();
var second = CreatePage();
target.NavigateTo(first);
target.NavigateTo(second);
second.ClearReceivedCalls();
target.Back();
second.Received(1).Deactivated();
}
public void ForwardShouldCallActivatedOnNewPage()
{
var target = new NavigationViewModel();
var first = CreatePage();
var second = CreatePage();
target.NavigateTo(first);
target.NavigateTo(second);
target.Back();
second.ClearReceivedCalls();
target.Forward();
second.Received(1).Activated();
}
public void RemovingItemAfterCurrentWorks()
{
var target = new NavigationViewModel();
var first = CreatePage();
var second = CreatePage();
target.NavigateTo(first);
target.NavigateTo(second);
target.Back();
target.RemoveAll(second);
Assert.Same(first, target.Content);
Assert.Same(first, target.History[0]);
Assert.Equal(0, target.Index);
Assert.Single(target.History);
}
