InsertSlideAt not working as expected

.gitignore

@@ -0,0 +1,133 @@
+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+
+# User-specific files
+*.suo
+*.user
+*.sln.docstates
+
+# Build results
+
+[Dd]ebug/
+[Rr]elease/
+x64/
+[Bb]in/
+[Oo]bj/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+*_i.c
+*_p.c
+*_i.h
+*.ilk
+*.meta
+*.obj
+*.pch
+*.pdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.log
+*.svclog
+*.scc
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opensdf
+*.sdf
+*.cachefile
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.Publish.xml
+*.pubxml
+*.azurePubxml
+
+# NuGet Packages Directory
+## TODO: If you have NuGet Package Restore enabled, uncomment the next line
+packages/
+## TODO: If the tool you use requires repositories.config, also uncomment the next line
+!packages/repositories.config
+
+# Windows Azure Build Output
+csx/
+*.build.csdef
+
+# Windows Store app package directory
+AppPackages/
+
+# Others
+sql/
+*.Cache
+ClientBin/
+[Ss]tyle[Cc]op.*
+![Ss]tyle[Cc]op.targets
+~$*
+*~
+*.dbmdl
+*.[Pp]ublish.xml
+
+*.publishsettings
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file to a newer
+# Visual Studio version. Backup files are not needed, because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+
+# SQL Server files
+App_Data/*.mdf
+App_Data/*.ldf
+
+# =========================
+# Windows detritus
+# =========================
+
+# Windows image file caches
+Thumbs.db
+ehthumbs.db
+
+# Folder config file
+Desktop.ini
+
+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Mac desktop service store files
+.DS_Store
+
+_NCrunch*

FileFormat.Slides-Test/Program.cs

@@ -2,7 +2,7 @@
 using PKG = DocumentFormat.OpenXml.Packaging;
 using P = DocumentFormat.OpenXml.Presentation;
 using System;
-using GeneratedCode;
+//using GeneratedCode;
 using FileFormat.Slides;
 using System.Collections.Generic;
 using FileFormat.Slides.Common;

FileFormat.Slides.Common/FileFormat.Slides.Common.csproj

@@ -4,8 +4,17 @@
     <TargetFramework>netcoreapp3.1</TargetFramework>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="newtonsoft.json" Version="13.0.3" />
+  </ItemGroup>
+
+  <!-- 
+   Should this be a relative path so people without a D drive can compile the code?
+  -->
+  <!--  
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
     <DocumentationFile>D:\Local_Repos\FileFormat.Slides\FileFormat.Slides.Common\FileFormat.Slides.Common.xml</DocumentationFile>
   </PropertyGroup>
+  -->
 
 </Project>

FileFormat.Slides.Facade/PresentationDocumentFacade.cs

@@ -564,8 +564,12 @@ public void InsertSlide (int index, SlideFacade slideFacade)
         {
             slideFacade.PresentationSlide.Save(slideFacade.SlidePart);
             _PresentationSlideParts.Add(slideFacade.SlidePart);
-            MoveSlideToIndex(slideFacade.SlideIndex, index);
 
+            // find the current index of the slide in the list and then move it to the specified index
+            var relationshipId = slideFacade.RelationshipId;
+            var currentIndex = _SlideIdList.Elements<SlideId>().ToList().FindIndex(item => item.RelationshipId == relationshipId);
+
+            MoveSlideToIndex(slideFacade.SlideIndex, index);
         }
 
         public void MoveSlideToIndex (int currentIndex, int newIndex)

FileFormat.Slides.Tests/FileFormat.Slides.Tests.csproj

@@ -0,0 +1,22 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
+    <PackageReference Include="MSTest.TestAdapter" Version="2.2.10" />
+    <PackageReference Include="MSTest.TestFramework" Version="2.2.10" />
+    <PackageReference Include="coverlet.collector" Version="3.1.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\FileFormat.Slides.Common\FileFormat.Slides.Common.csproj" />
+    <ProjectReference Include="..\Fileformat.Slides.Facade\FileFormat.Slides.Facade.csproj" />
+    <ProjectReference Include="..\FileFormat.Slides\FileFormat.Slides.csproj" />
+  </ItemGroup>
+
+</Project>