public void ClearUpdatesNavigationState()
{
// Prepare
RegionNavigationJournal target = new RegionNavigationJournal();
Uri uri1 = new Uri("Uri1", UriKind.Relative);
RegionNavigationJournalEntry entry1 = new RegionNavigationJournalEntry()
{
Uri = uri1
};
Uri uri2 = new Uri("Uri2", UriKind.Relative);
RegionNavigationJournalEntry entry2 = new RegionNavigationJournalEntry()
{
Uri = uri2
};
Uri uri3 = new Uri("Uri3", UriKind.Relative);
RegionNavigationJournalEntry entry3 = new RegionNavigationJournalEntry()
{
Uri = uri3
};
target.RecordNavigation(entry1, true);
target.RecordNavigation(entry2, true);
target.RecordNavigation(entry3, true);
// Act
target.Clear();
// Verify
Assert.False(target.CanGoBack);
Assert.False(target.CanGoForward);
Assert.Null(target.CurrentEntry);
}
public void RecordingNavigationMultipleTimesUpdatesNavigationState()
{
// Prepare
RegionNavigationJournal target = new RegionNavigationJournal();
Uri uri1 = new Uri("Uri1", UriKind.Relative);
RegionNavigationJournalEntry entry1 = new RegionNavigationJournalEntry()
{
Uri = uri1
};
Uri uri2 = new Uri("Uri2", UriKind.Relative);
RegionNavigationJournalEntry entry2 = new RegionNavigationJournalEntry()
{
Uri = uri2
};
Uri uri3 = new Uri("Uri3", UriKind.Relative);
RegionNavigationJournalEntry entry3 = new RegionNavigationJournalEntry()
{
Uri = uri3
};
// Act
target.RecordNavigation(entry1, true);
target.RecordNavigation(entry2, true);
target.RecordNavigation(entry3, true);
// Verify
Assert.IsTrue(target.CanGoBack);
Assert.IsFalse(target.CanGoForward);
Assert.AreSame(entry3, target.CurrentEntry);
}
public void WhenNavigationToNewUri_ThenCanNoLongerNavigateForward()
{
// Prepare
RegionNavigationJournal target = new RegionNavigationJournal();
Mock <INavigateAsync> mockNavigationTarget = new Mock <INavigateAsync>();
target.NavigationTarget = mockNavigationTarget.Object;
Uri uri1 = new Uri("Uri1", UriKind.Relative);
RegionNavigationJournalEntry entry1 = new RegionNavigationJournalEntry()
{
Uri = uri1
};
Uri uri2 = new Uri("Uri2", UriKind.Relative);
RegionNavigationJournalEntry entry2 = new RegionNavigationJournalEntry()
{
Uri = uri2
};
Uri uri3 = new Uri("Uri3", UriKind.Relative);
RegionNavigationJournalEntry entry3 = new RegionNavigationJournalEntry()
{
Uri = uri3
};
Uri uri4 = new Uri("Uri4", UriKind.Relative);
RegionNavigationJournalEntry entry4 = new RegionNavigationJournalEntry()
{
Uri = uri4
};
target.RecordNavigation(entry1, true);
target.RecordNavigation(entry2, true);
mockNavigationTarget
.Setup(x => x.RequestNavigate(uri1, It.IsAny <Action <NavigationResult> >(), null))
.Callback <Uri, Action <NavigationResult>, NavigationParameters>((u, c, n) => c(new NavigationResult(null, true)));
mockNavigationTarget
.Setup(x => x.RequestNavigate(uri2, It.IsAny <Action <NavigationResult> >(), null))
.Callback <Uri, Action <NavigationResult>, NavigationParameters>((u, c, n) => c(new NavigationResult(null, true)));
mockNavigationTarget
.Setup(x => x.RequestNavigate(uri3, It.IsAny <Action <NavigationResult> >(), null))
.Callback <Uri, Action <NavigationResult>, NavigationParameters>((u, c, n) => c(new NavigationResult(null, true)));
target.GoBack();
Assert.True(target.CanGoForward);
// Act
target.RecordNavigation(entry3, true);
// Verify
Assert.False(target.CanGoForward);
Assert.Equal(entry3, target.CurrentEntry);
}
public void GoForwardMultipleTimesNavigatesForward()
{
// Prepare
RegionNavigationJournal target = new RegionNavigationJournal();
Mock <INavigateAsync> mockNavigationTarget = new Mock <INavigateAsync>();
target.NavigationTarget = mockNavigationTarget.Object;
Uri uri1 = new Uri("Uri1", UriKind.Relative);
RegionNavigationJournalEntry entry1 = new RegionNavigationJournalEntry()
{
Uri = uri1
};
Uri uri2 = new Uri("Uri2", UriKind.Relative);
RegionNavigationJournalEntry entry2 = new RegionNavigationJournalEntry()
{
Uri = uri2
};
Uri uri3 = new Uri("Uri3", UriKind.Relative);
RegionNavigationJournalEntry entry3 = new RegionNavigationJournalEntry()
{
Uri = uri3
};
target.RecordNavigation(entry1, true);
target.RecordNavigation(entry2, true);
target.RecordNavigation(entry3, true);
mockNavigationTarget
.Setup(x => x.RequestNavigate(uri1, It.IsAny <Action <NavigationResult> >(), null))
.Callback <Uri, Action <NavigationResult>, NavigationParameters>((u, c, n) => c(new NavigationResult(null, true)));
mockNavigationTarget
.Setup(x => x.RequestNavigate(uri2, It.IsAny <Action <NavigationResult> >(), null))
.Callback <Uri, Action <NavigationResult>, NavigationParameters>((u, c, n) => c(new NavigationResult(null, true)));
mockNavigationTarget
.Setup(x => x.RequestNavigate(uri3, It.IsAny <Action <NavigationResult> >(), null))
.Callback <Uri, Action <NavigationResult>, NavigationParameters>((u, c, n) => c(new NavigationResult(null, true)));
target.GoBack();
target.GoBack();
// Act
target.GoForward();
target.GoForward();
// Verify
Assert.True(target.CanGoBack);
Assert.False(target.CanGoForward);
Assert.Same(entry3, target.CurrentEntry);
mockNavigationTarget.Verify(x => x.RequestNavigate(uri1, It.IsAny <Action <NavigationResult> >(), null), Times.Once());
mockNavigationTarget.Verify(x => x.RequestNavigate(uri2, It.IsAny <Action <NavigationResult> >(), null), Times.Exactly(2));
mockNavigationTarget.Verify(x => x.RequestNavigate(uri3, It.IsAny <Action <NavigationResult> >(), null), Times.Once());
}
public void GoForwardDoesNotChangeStateWhenNavigationFails()
{
// Prepare
var target = new RegionNavigationJournal();
var mockNavigationTarget = new Mock <INavigateAsync>();
target.NavigationTarget = mockNavigationTarget.Object;
var uri1 = new Uri("Uri1", UriKind.Relative);
var entry1 = new RegionNavigationJournalEntry()
{
Uri = uri1
};
var uri2 = new Uri("Uri2", UriKind.Relative);
var entry2 = new RegionNavigationJournalEntry()
{
Uri = uri2
};
var uri3 = new Uri("Uri3", UriKind.Relative);
var entry3 = new RegionNavigationJournalEntry()
{
Uri = uri3
};
target.RecordNavigation(entry1, true);
target.RecordNavigation(entry2, true);
target.RecordNavigation(entry3, true);
mockNavigationTarget
.Setup(x => x.RequestNavigate(uri1, It.IsAny <Action <IRegionNavigationResult> >(), null))
.Callback <Uri, Action <IRegionNavigationResult>, INavigationParameters>((u, c, n) => c(new RegionNavigationResult(null, true)));
mockNavigationTarget
.Setup(x => x.RequestNavigate(uri2, It.IsAny <Action <IRegionNavigationResult> >(), null))
.Callback <Uri, Action <IRegionNavigationResult>, INavigationParameters>((u, c, n) => c(new RegionNavigationResult(null, true)));
mockNavigationTarget
.Setup(x => x.RequestNavigate(uri3, It.IsAny <Action <IRegionNavigationResult> >(), null))
.Callback <Uri, Action <IRegionNavigationResult>, INavigationParameters>((u, c, n) => c(new RegionNavigationResult(null, false)));
target.GoBack();
// Act
target.GoForward();
// Verify
Assert.True(target.CanGoBack);
Assert.True(target.CanGoForward);
Assert.Same(entry2, target.CurrentEntry);
mockNavigationTarget.Verify(x => x.RequestNavigate(uri1, It.IsAny <Action <IRegionNavigationResult> >(), null), Times.Never());
mockNavigationTarget.Verify(x => x.RequestNavigate(uri2, It.IsAny <Action <IRegionNavigationResult> >(), null), Times.Once());
mockNavigationTarget.Verify(x => x.RequestNavigate(uri3, It.IsAny <Action <IRegionNavigationResult> >(), null), Times.Once());
}
public void GoBackDoesNotChangeStateWhenNavigationFails()
{
// Prepare
RegionNavigationJournal target = new RegionNavigationJournal();
Mock <INavigateAsync> mockNavigationTarget = new Mock <INavigateAsync>();
target.NavigationTarget = mockNavigationTarget.Object;
Uri uri1 = new Uri("Uri1", UriKind.Relative);
RegionNavigationJournalEntry entry1 = new RegionNavigationJournalEntry()
{
Uri = uri1
};
Uri uri2 = new Uri("Uri2", UriKind.Relative);
RegionNavigationJournalEntry entry2 = new RegionNavigationJournalEntry()
{
Uri = uri2
};
Uri uri3 = new Uri("Uri3", UriKind.Relative);
RegionNavigationJournalEntry entry3 = new RegionNavigationJournalEntry()
{
Uri = uri3
};
target.RecordNavigation(entry1);
target.RecordNavigation(entry2);
target.RecordNavigation(entry3);
mockNavigationTarget
.Setup(x => x.RequestNavigate(uri1, It.IsAny <Action <NavigationResult> >()))
.Callback <Uri, Action <NavigationResult> >((u, c) => c(new NavigationResult(null, true)));
mockNavigationTarget
.Setup(x => x.RequestNavigate(uri2, It.IsAny <Action <NavigationResult> >()))
.Callback <Uri, Action <NavigationResult> >((u, c) => c(new NavigationResult(null, false)));
mockNavigationTarget
.Setup(x => x.RequestNavigate(uri3, It.IsAny <Action <NavigationResult> >()))
.Callback <Uri, Action <NavigationResult> >((u, c) => c(new NavigationResult(null, true)));
// Act
target.GoBack();
// Verify
Assert.IsTrue(target.CanGoBack);
Assert.IsFalse(target.CanGoForward);
Assert.AreSame(entry3, target.CurrentEntry);
mockNavigationTarget.Verify(x => x.RequestNavigate(uri1, It.IsAny <Action <NavigationResult> >()), Times.Never());
mockNavigationTarget.Verify(x => x.RequestNavigate(uri2, It.IsAny <Action <NavigationResult> >()), Times.Once());
mockNavigationTarget.Verify(x => x.RequestNavigate(uri3, It.IsAny <Action <NavigationResult> >()), Times.Never());
}
/// <summary>
/// Called when the implementer is being navigated away from.
/// </summary>
/// <param name="navigationContext">The navigation context.</param>
/// <exception cref="System.ArgumentNullException"></exception>
public virtual void OnNavigatedFrom(NavigationContext navigationContext)
{
if (navigationContext == null)
{
throw new ArgumentNullException(nameof(navigationContext));
}
var journalEntry = new RegionNavigationJournalEntry {
Uri = navigationContext.Uri
};
NavigationJournal = NavigationJournal ?? ServiceLocator.Current.GetInstance <IRegionNavigationJournal>();
NavigationJournal.RecordNavigation(journalEntry);
}
public void WhenNavigating_NavigationIsRecordedInJournal()
{
// Prepare
object view = new object();
Uri viewUri = new Uri(view.GetType().Name, UriKind.Relative);
IRegion region = new Region();
region.Add(view);
string regionName = "RegionName";
RegionManager regionManager = new RegionManager();
regionManager.Regions.Add(regionName, region);
IRegionNavigationJournalEntry journalEntry = new RegionNavigationJournalEntry();
var serviceLocatorMock = new Mock <IServiceLocator>();
serviceLocatorMock.Setup(x => x.GetInstance <IRegionNavigationJournalEntry>())
.Returns(journalEntry);
IServiceLocator serviceLocator = serviceLocatorMock.Object;
RegionNavigationContentLoader contentLoader = new RegionNavigationContentLoader(serviceLocator);
var journalMock = new Mock <IRegionNavigationJournal>();
journalMock.Setup(x => x.RecordNavigation(journalEntry)).Verifiable();
IRegionNavigationJournal journal = journalMock.Object;
RegionNavigationService target = new RegionNavigationService(serviceLocator, contentLoader, journal);
target.Region = region;
// Act
target.RequestNavigate(viewUri, nr => { });
// Verify
Assert.IsNotNull(journalEntry);
Assert.AreEqual(viewUri, journalEntry.Uri);
journalMock.VerifyAll();
}
public void WhenNavigating_NavigationIsRecordedInJournal()
{
// Prepare
var view = new ContentView();
var viewUri = new Uri(view.GetType().Name, UriKind.Relative);
IRegion region = new Region();
region.Add(view);
string regionName = "RegionName";
var regionManager = new RegionManager();
regionManager.Regions.Add(regionName, region);
IRegionNavigationJournalEntry journalEntry = new RegionNavigationJournalEntry();
var containerMock = new Mock <IContainerExtension>();
containerMock.Setup(x => x.Resolve(typeof(IRegionNavigationJournalEntry))).Returns(journalEntry);
IContainerExtension container = containerMock.Object;
var contentLoader = new RegionNavigationContentLoader(container);
var journalMock = new Mock <IRegionNavigationJournal>();
journalMock.Setup(x => x.RecordNavigation(journalEntry, true)).Verifiable();
IRegionNavigationJournal journal = journalMock.Object;
var target = new RegionNavigationService(container, contentLoader, journal)
{
Region = region
};
// Act
target.RequestNavigate(viewUri, nr => { });
// Verify
Assert.NotNull(journalEntry);
Assert.Equal(viewUri, journalEntry.Uri);
journalMock.VerifyAll();
}
public void RecordingNavigationUpdatesNavigationState()
{
// Prepare
RegionNavigationJournal target = new RegionNavigationJournal();
Uri uri = new Uri("Uri", UriKind.Relative);
RegionNavigationJournalEntry entry = new RegionNavigationJournalEntry()
{
Uri = uri
};
// Act
target.RecordNavigation(entry, true);
// Verify
Assert.False(target.CanGoBack);
Assert.False(target.CanGoForward);
Assert.Same(entry, target.CurrentEntry);
}
public void WhenSavePreviousFalseDoNotRecordEntry()
{
// Prepare
RegionNavigationJournal target = new RegionNavigationJournal();
Mock <INavigateAsync> mockNavigationTarget = new Mock <INavigateAsync>();
target.NavigationTarget = mockNavigationTarget.Object;
Uri uri1 = new Uri("Uri1", UriKind.Relative);
RegionNavigationJournalEntry entry1 = new RegionNavigationJournalEntry()
{
Uri = uri1
};
Uri uri2 = new Uri("Uri2", UriKind.Relative);
RegionNavigationJournalEntry entry2 = new RegionNavigationJournalEntry()
{
Uri = uri2
};
Uri uri3 = new Uri("Uri3", UriKind.Relative);
RegionNavigationJournalEntry entry3 = new RegionNavigationJournalEntry()
{
Uri = uri3
};
Uri uri4 = new Uri("Uri4", UriKind.Relative);
RegionNavigationJournalEntry entry4 = new RegionNavigationJournalEntry()
{
Uri = uri4
};
target.RecordNavigation(entry1, true);
target.RecordNavigation(entry2, true);
target.RecordNavigation(entry3, false);
target.RecordNavigation(entry4, true);
mockNavigationTarget
.Setup(x => x.RequestNavigate(uri1, It.IsAny <Action <NavigationResult> >(), null))
.Callback <Uri, Action <NavigationResult>, NavigationParameters>((u, c, n) => c(new NavigationResult(null, true)));
mockNavigationTarget
.Setup(x => x.RequestNavigate(uri2, It.IsAny <Action <NavigationResult> >(), null))
.Callback <Uri, Action <NavigationResult>, NavigationParameters>((u, c, n) => c(new NavigationResult(null, true)));
mockNavigationTarget
.Setup(x => x.RequestNavigate(uri3, It.IsAny <Action <NavigationResult> >(), null))
.Callback <Uri, Action <NavigationResult>, NavigationParameters>((u, c, n) => c(new NavigationResult(null, true)));
mockNavigationTarget
.Setup(x => x.RequestNavigate(uri4, It.IsAny <Action <NavigationResult> >(), null))
.Callback <Uri, Action <NavigationResult>, NavigationParameters>((u, c, n) => c(new NavigationResult(null, true)));
Assert.Equal(entry4, target.CurrentEntry);
target.GoBack();
Assert.True(target.CanGoBack);
Assert.True(target.CanGoForward);
Assert.Same(entry2, target.CurrentEntry);
mockNavigationTarget.Verify(x => x.RequestNavigate(uri1, It.IsAny <Action <NavigationResult> >(), null), Times.Never());
mockNavigationTarget.Verify(x => x.RequestNavigate(uri2, It.IsAny <Action <NavigationResult> >(), null), Times.Once());
mockNavigationTarget.Verify(x => x.RequestNavigate(uri3, It.IsAny <Action <NavigationResult> >(), null), Times.Never());
mockNavigationTarget.Verify(x => x.RequestNavigate(uri4, It.IsAny <Action <NavigationResult> >(), null), Times.Never());
}