From 75fd512ef5cc11c87018dc06c13dd0bcb3b79609 Mon Sep 17 00:00:00 2001
From: Alberto Aldegheri <albyrock87@gmail.com>
Date: Wed, 27 Mar 2024 14:16:11 +0100
Subject: [PATCH] Fixes a crash on complex navigation

---
 .../Internals/NavigationService.cs            |  2 +-
 .../Navigation/NavigationServiceTests.cs      | 36 +++++++++++++------
 2 files changed, 26 insertions(+), 12 deletions(-)

diff --git a/Source/Nalu.Maui.Navigation/Internals/NavigationService.cs b/Source/Nalu.Maui.Navigation/Internals/NavigationService.cs
index 7d59fa6..5691a08 100644
--- a/Source/Nalu.Maui.Navigation/Internals/NavigationService.cs
+++ b/Source/Nalu.Maui.Navigation/Internals/NavigationService.cs
@@ -284,7 +284,7 @@ private async Task<bool> ExecuteAbsoluteNavigationAsync(INavigationInfo navigati
                     .SelectMany(section => section.Contents)
                     .Where(content => content.Page is not null)
                     .OrderByDescending(content => content.Parent == currentSection)
-                    .ThenBy(content => content.Parent)
+                    .ThenBy(content => content.Parent.SegmentName)
                     .ThenByDescending(content => content == currentContent)];
             }
             else
diff --git a/Tests/Nalu.Maui.Test/Navigation/NavigationServiceTests.cs b/Tests/Nalu.Maui.Test/Navigation/NavigationServiceTests.cs
index 5bd42d3..ba49067 100644
--- a/Tests/Nalu.Maui.Test/Navigation/NavigationServiceTests.cs
+++ b/Tests/Nalu.Maui.Test/Navigation/NavigationServiceTests.cs
@@ -626,20 +626,30 @@ public async Task NavigationServiceWhenDoingAbsoluteNavigationOnSameItemButDiffe
     [Fact(DisplayName = "NavigationService, when doing absolute navigation on different item, should pop navigation stacks")]
     public async Task NavigationServiceWhenDoingAbsoluteNavigationOnDifferentItemShouldPopNavigationStacks()
     {
-        ConfigureTestAsync("c1,c5");
-        await _navigationService.InitializeAsync(_shellProxy, nameof(Page1), null);
+        ConfigureTestAsync("i1[c1,c2,c3],c5");
+        await _navigationService.InitializeAsync(_shellProxy, nameof(Page2), null);
+        await _navigationService.GoToAsync(Navigation.Absolute().ShellContent<IPage3Model>());
+        await _navigationService.GoToAsync(Navigation.Absolute().ShellContent<IPage1Model>());
         var shellContent1 = _shellProxy.GetContent(nameof(Page1));
-        var shellSection = shellContent1.Parent;
+        var shellContent2 = _shellProxy.GetContent(nameof(Page2));
+        var shellContent3 = _shellProxy.GetContent(nameof(Page3));
+        var shellSection1 = shellContent1.Parent;
         var page1 = shellContent1.Page!;
         var model1 = (IPage1Model)page1.BindingContext;
-
-        await _navigationService.GoToAsync(Navigation.Relative().Push<IPage2Model>());
-        var navigationStackPages = shellSection.GetNavigationStack().ToList();
-        var page2 = navigationStackPages[1].Page;
+        var page2 = shellContent2.Page!;
         var model2 = (IPage2Model)page2.BindingContext;
+        var page3 = shellContent3.Page!;
+        var model3 = (IPage3Model)page3.BindingContext;
+
+        await _navigationService.GoToAsync(Navigation.Relative().Push<IPage4Model>());
+        var navigationStackPages = shellSection1.GetNavigationStack().ToList();
+        var page4 = navigationStackPages[1].Page;
+        var model4 = (IPage4Model)page4.BindingContext;
 
         model1.ClearReceivedCalls();
         model2.ClearReceivedCalls();
+        model3.ClearReceivedCalls();
+        model4.ClearReceivedCalls();
         _shellProxy.ClearReceivedCalls();
 
         await _navigationService.GoToAsync(Navigation.Absolute().ShellContent<IPage5Model>());
@@ -649,15 +659,19 @@ public async Task NavigationServiceWhenDoingAbsoluteNavigationOnDifferentItemSho
 
         Received.InOrder(() =>
         {
-            model2.OnDisappearingAsync();
-            model2.OnLeavingAsync();
-            _shellProxy.PopAsync(shellSection);
+            model4.OnDisappearingAsync();
+            model4.OnLeavingAsync();
+            _shellProxy.PopAsync(shellSection1);
             model1.OnLeavingAsync();
+            model2.OnLeavingAsync();
+            model3.OnLeavingAsync();
             model5.OnEnteringAsync();
             _shellProxy.SelectContentAsync(nameof(Page5));
             model5.OnAppearingAsync();
-            model2.Dispose();
+            model4.Dispose();
             model1.Dispose();
+            model2.Dispose();
+            model3.Dispose();
         });
     }