feat: Set HistoryEntryState in NavigationManager

Author: linkdotnet

CHANGELOG.md

@@ -13,6 +13,7 @@ All notable changes to **bUnit** will be documented in this file. The project ad
 ### Fixed
 
 - When the `TestContext` was disposed, the Blazor Renderer itself didn't dispose components under test. By [@linkdotnet](https://github.com/linkdotnet).
+- When navigating, the `HistoryEntryState` on `NavigationManager` will be populated. By [@linkdotnet](https://github.com/linkdotnet).
 
 ### Added
 

src/bunit.web/TestDoubles/NavigationManager/FakeNavigationManager.cs

@@ -86,6 +86,7 @@ protected override void NavigateToCore(string uri, NavigationOptions options)
 			history.Pop();
 
 #if NET7_0_OR_GREATER
+		HistoryEntryState = options.ForceLoad ? null : options.HistoryEntryState;
 		renderer.Dispatcher.InvokeAsync(async () =>
 #else
 		renderer.Dispatcher.InvokeAsync(() =>

tests/bunit.web.tests/TestDoubles/NavigationManager/FakeNavigationManagerTest.cs

@@ -264,6 +264,29 @@ public void Test015()
 		Should.Throw<JsonException>(
 			() => fakeNavigationManager.History.Last().StateFromJson<InteractiveRequestOptions>());
 	}
+	
+	[Fact(DisplayName = "Navigate to url with state should set that state on the NavigationManager")]
+	public void Test016()
+	{
+		const string State = "State";
+		var sut = CreateFakeNavigationManager();
+
+		sut.NavigateTo("/internal", new NavigationOptions { HistoryEntryState = State });
+
+		sut.HistoryEntryState.ShouldBe(State);
+	}
+	
+	[Fact(DisplayName = "Navigate to url with force reload resets state")]
+	public void Test017()
+	{
+		const string State = "State";
+		var sut = CreateFakeNavigationManager();
+
+		sut.NavigateTo("/internal", new NavigationOptions { HistoryEntryState = State });
+		sut.NavigateTo("/internal", new NavigationOptions { HistoryEntryState = State, ForceLoad = true});
+
+		sut.HistoryEntryState.ShouldBe(null);
+	}
 
 	private sealed class InterceptNavigateToCounterComponent : ComponentBase
 	{