test: Ensure duplicated navigation wont happen

testing/TestHarness/TestHarness.UITest/Ext/Navigation/Apps/Chefs/Given_Apps_Chefs.cs

@@ -13,4 +13,16 @@ public async Task When_Chefs_FavoriteRecipes_RecipeDetails()
 		App.WaitThenTap("FavoriteRecipesButton");
 		App.WaitThenTap("RecipeDetailsButton");
 	}
+
+	[Test]
+	public async Task When_Chefs_WelcomePage_Wont_Navigate_Twice()
+	{
+		InitTestSection(TestSections.Apps_Chefs);
+
+		App.WaitElement("TbInstanceCountProperty");
+
+		var intanceCount = App.GetText("TbInstanceCountProperty");
+
+		Assert.AreEqual("1", intanceCount);
+	}
 }

testing/TestHarness/TestHarness/Ext/Navigation/Apps/Chefs/ChefsHostInit.cs

@@ -4,6 +4,16 @@ namespace TestHarness.Ext.Navigation.Apps.Chefs;
 
 public partial class ChefsHostInit : BaseHostInitialization
 {
+	protected override string[] ConfigurationFiles => new string[] { "TestHarness.Ext.Navigation.Apps.Chefs.appsettings.chefs.json" };
+
+	public ChefsHostInit()
+	{
+		if (ApplicationData.Current.LocalSettings.Values.TryGetValue(Constants.ChefsWelcomeInstanceCountKey, out var value))
+		{
+			ApplicationData.Current.LocalSettings.Values[Constants.ChefsWelcomeInstanceCountKey] = 0;
+		}
+	}
+
 	protected override IHostBuilder Navigation(IHostBuilder builder)
 	{
 		return builder.UseNavigation(ReactiveViewModelMappings.ViewModelMappings, RegisterRoutes).UseToolkitNavigation();
@@ -37,7 +47,7 @@ protected override void RegisterRoutes(IViewRegistry views, IRouteRegistry route
 			new RouteMap("", View: views.FindByViewModel<ChefsShellModel>(),
 				Nested: new RouteMap[]
 				{
-					new RouteMap("ChefsWelcome", View: views.FindByViewModel<ChefsWelcomeModel>()),
+					new RouteMap("ChefsWelcome", View: views.FindByViewModel<ChefsWelcomeModel>(), IsDefault: true),
 					new RouteMap("ChefsLogin", View: views.FindByViewModel<ChefsLoginModel>()),
 					new RouteMap("ChefsRoot", View: views.FindByViewModel<ChefsRootModel>(), Nested: new RouteMap[]
 					{
@@ -96,5 +106,3 @@ protected override void RegisterRoutes(IViewRegistry views, IRouteRegistry route
 		);
 	}
 }
-
-

testing/TestHarness/TestHarness/Ext/Navigation/Apps/Chefs/ChefsShellModel.cs

@@ -7,10 +7,5 @@ internal record ChefsShellModel
 	public ChefsShellModel(INavigator navigator)
 	{
 		Navigator = navigator;
-
-		_ = Start();
 	}
-
-
-	public async Task Start() => await Navigator.NavigateViewModelAsync<ChefsWelcomeModel>(this);
 }

testing/TestHarness/TestHarness/Ext/Navigation/Apps/Chefs/ChefsWelcomeModel.cs

@@ -2,4 +2,18 @@
 
 public partial class ChefsWelcomeModel
 {
+	public static int InstanceCount
+	{
+		get => ApplicationData.Current.LocalSettings.Values.TryGetValue(Constants.ChefsWelcomeInstanceCountKey, out var value)
+			? (int)value
+			: 0;
+		private set => ApplicationData.Current.LocalSettings.Values[Constants.ChefsWelcomeInstanceCountKey] = value;
+	}
+
+	public int InstanceCountProperty { get; private set; }
+
+	public ChefsWelcomeModel()
+	{
+		InstanceCountProperty = ++InstanceCount;
+	}
 }

testing/TestHarness/TestHarness/Ext/Navigation/Apps/Chefs/ChefsWelcomePage.xaml

@@ -10,6 +10,8 @@
 
 	<StackPanel>
 		<TextBlock Text="ChefsWelcome" />
+		<TextBlock AutomationProperties.AutomationId="TbInstanceCountProperty"
+				   Text="{Binding InstanceCountProperty, Mode=TwoWay}" />
 		<Button AutomationProperties.AutomationId="NextButton"
 				Content="Next"
 				uen:Navigation.Request="ChefsLogin" />

testing/TestHarness/TestHarness/Ext/Navigation/Apps/Chefs/Constants.cs

@@ -0,0 +1,6 @@
+namespace TestHarness.Ext.Navigation.Apps.Chefs;
+
+internal class Constants
+{
+	public const string ChefsWelcomeInstanceCountKey = "ChefsWelcomeInstanceCount";
+}

testing/TestHarness/TestHarness/Ext/Navigation/Apps/Chefs/appsettings.chefs.json

@@ -0,0 +1,5 @@
+{
+  "HostConfiguration": {
+	"LaunchUrl": "http://localhost:5000/ChefsWelcome"
+  }
+}

testing/TestHarness/TestHarness/TestHarness.csproj

@@ -56,6 +56,7 @@
 	  <EmbeddedResource Include="Ext\Http\Endpoints\appsettings.httpendpoints.json" />
 	  <EmbeddedResource Include="Ext\Http\Refit\appsettings.httprefit.json" />
 	  <EmbeddedResource Include="Ext\Localization\appsettings.locale.json" />
+	  <EmbeddedResource Include="Ext\Navigation\Apps\Chefs\appsettings.chefs.json" />
 	  <EmbeddedResource Include="Ext\Navigation\Apps\Commerce\appsettings.logging.json" />
 	</ItemGroup>