Fix codegen so that we can generate samples for MySql properly

src/AutoRest.CSharp/Mgmt/AutoRest/MgmtOutputLibrary.cs

@@ -822,7 +822,10 @@ public override TypeProvider FindTypeProviderForSchema(Schema schema)
         public override CSharpType? FindTypeByName(string originalName)
         {
             _schemaOrNameToModels.TryGetValue(originalName, out TypeProvider? provider);
-            provider ??= ResourceSchemaMap.Values.FirstOrDefault(m => m.Type.Name == originalName);
+
+            // Try to search declaration name too if no key matches. i.e. Resource Data Type will be appended a 'Data' in the name and won't be found through key
+            provider ??= _schemaOrNameToModels.FirstOrDefault(s => s.Value is MgmtObjectType mot && mot.Declaration.Name == originalName).Value;
+
             return provider?.Type;
         }
 

src/AutoRest.CSharp/MgmtTest/AutoRest/MgmtTestTarget.cs

@@ -102,6 +102,9 @@ private static string GetSourceCodePath()
             if (Configuration.MgmtTestConfiguration?.SourceCodePath != null)
                 return Configuration.MgmtTestConfiguration.SourceCodePath;
 
+            // try to find the sdk source code path according to the default folder structure
+            // Azure.ResourceManager.XXX \ src <- default sdk source folder
+            //                           \ samples \ Generated <- default sample output folder defined in msbuild
             return Path.Combine(Configuration.OutputFolder, "../../src");
         }
 

src/AutoRest.CSharp/MgmtTest/AutoRest/SourceCodeProject.cs

@@ -5,6 +5,7 @@
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
+using System.Linq;
 using System.Threading.Tasks;
 using AutoRest.CSharp.AutoRest.Plugins;
 using Microsoft.CodeAnalysis;
@@ -41,9 +42,11 @@ public async Task<Compilation> GetCompilationAsync()
         private static Project CreateSourceCodeProject(string sourceCodePath, string[] sharedSourceFolders)
         {
             var sourceCodeProject = CreateGeneratedCodeProject();
-            var sourceCodeGeneratedDirectory = Path.Join(sourceCodePath, GeneratedCodeWorkspace.GeneratedFolder);
+            DirectoryInfo di = new DirectoryInfo(sourceCodePath);
+            var genFolders = di.EnumerateDirectories(GeneratedCodeWorkspace.GeneratedFolder, SearchOption.AllDirectories).ToList();
 
-            sourceCodeProject = GeneratedCodeWorkspace.AddDirectory(sourceCodeProject, sourceCodePath, skipPredicate: sourceFile => sourceFile.StartsWith(sourceCodeGeneratedDirectory));
+            sourceCodeProject = GeneratedCodeWorkspace.AddDirectory(sourceCodeProject, sourceCodePath,
+                skipPredicate: sourceFile => genFolders.Exists(f => sourceFile.StartsWith(f.FullName)));
 
             foreach (var sharedSourceFolder in sharedSourceFolders)
             {