Read RunSettingsFilePath property and send as env var in dotnet test (#43868)

Author: mariam-abdulla

src/Cli/dotnet/commands/dotnet-test/IPC/Models/ModuleMessage.cs

@@ -5,4 +5,4 @@
 
 namespace Microsoft.DotNet.Tools.Test;
 
-internal sealed record ModuleMessage(string? DLLPath, string? ProjectPath, string? TargetFramework) : IRequest;
+internal sealed record ModuleMessage(string? DLLPath, string? ProjectPath, string? TargetFramework, string? RunSettingsFilePath) : IRequest;

src/Cli/dotnet/commands/dotnet-test/IPC/Serializers/ModuleMessageSerializer.cs

@@ -12,14 +12,16 @@ public object Deserialize(Stream stream)
             string modulePath = ReadString(stream);
             string projectPath = ReadString(stream);
             string targetFramework = ReadString(stream);
-            return new ModuleMessage(modulePath.Trim(), projectPath.Trim(), targetFramework.Trim());
+            string runSettingsFilePath = ReadString(stream);
+            return new ModuleMessage(modulePath.Trim(), projectPath.Trim(), targetFramework.Trim(), runSettingsFilePath.Trim());
         }
 
         public void Serialize(object objectToSerialize, Stream stream)
         {
             WriteString(stream, ((ModuleMessage)objectToSerialize).DLLPath);
             WriteString(stream, ((ModuleMessage)objectToSerialize).ProjectPath);
             WriteString(stream, ((ModuleMessage)objectToSerialize).TargetFramework);
+            WriteString(stream, ((ModuleMessage)objectToSerialize).RunSettingsFilePath);
         }
     }
 }

src/Cli/dotnet/commands/dotnet-test/MSBuildConnectionHandler.cs

@@ -62,7 +62,7 @@ private Task<IResponse> OnRequest(IRequest request)
                     throw new NotSupportedException($"Request '{request.GetType()}' is unsupported.");
                 }
 
-                var testApp = new TestApplication(new Module(module.DLLPath, module.ProjectPath, module.TargetFramework), _args);
+                var testApp = new TestApplication(new Module(module.DLLPath, module.ProjectPath, module.TargetFramework, module.RunSettingsFilePath), _args);
                 // Write the test application to the channel
                 _actionQueue.Enqueue(testApp);
             }

src/Cli/dotnet/commands/dotnet-test/Models.cs

@@ -5,7 +5,7 @@
 
 namespace Microsoft.DotNet.Cli
 {
-    internal sealed record Module(string? DLLOrExe, string? ProjectPath, string? TargetFramework);
+    internal sealed record Module(string? DLLOrExe, string? ProjectPath, string? TargetFramework, string? RunSettingsFilePath);
 
     internal sealed record Handshake(Dictionary<byte, string>? Properties);
 

src/Cli/dotnet/commands/dotnet-test/TestApplication.cs

@@ -56,6 +56,7 @@ public async Task<int> RunAsync(bool isFilterMode, bool enableHelp, BuiltInOptio
             }
 
             bool isDll = _module.DLLOrExe.EndsWith(".dll");
+
             ProcessStartInfo processStartInfo = new()
             {
                 FileName = isFilterMode ? isDll ? Environment.ProcessPath : _module.DLLOrExe : Environment.ProcessPath,
@@ -64,6 +65,11 @@ public async Task<int> RunAsync(bool isFilterMode, bool enableHelp, BuiltInOptio
                 RedirectStandardError = true
             };
 
+            if (!string.IsNullOrEmpty(_module.RunSettingsFilePath))
+            {
+                processStartInfo.EnvironmentVariables.Add("TESTINGPLATFORM_VSTESTBRIDGE_RUNSETTINGS_FILE", _module.RunSettingsFilePath);
+            }
+
             _namedPipeConnectionLoop = Task.Run(async () => await WaitConnectionAsync(_cancellationToken.Token), _cancellationToken.Token);
             var result = await StartProcess(processStartInfo);
 

src/Cli/dotnet/commands/dotnet-test/TestModulesFilterHandler.cs

@@ -50,7 +50,7 @@ public bool RunWithTestModulesFilter(ParseResult parseResult)
 
             foreach (string testModule in testModulePaths)
             {
-                var testApp = new TestApplication(new Module(testModule, null, null), _args);
+                var testApp = new TestApplication(new Module(testModule, null, null, null), _args);
                 // Write the test application to the channel
                 _actionQueue.Enqueue(testApp);
             }

src/Layout/redist/MSBuildImports/Current/Microsoft.Common.targets/ImportAfter/Microsoft.TestPlatform.ImportAfter.targets

@@ -20,6 +20,6 @@ Copyright (c) .NET Foundation. All rights reserved.
   <!-- Register TestingPlatform task -->
   <UsingTask TaskName="GetTestsProject" AssemblyFile="$(MicrosoftNETBuildTasksDirectory)Microsoft.NET.Build.Tasks.dll" />
   <Target Name="_GetTestsProject" Condition=" $(IsTestProject) == 'true' OR '$(IsTestingPlatformApplication)' == 'true' " >
-    <GetTestsProject TargetPath="$(TargetPath)" GetTestsProjectPipeName="$(GetTestsProjectPipeName)" ProjectFullPath="$(MSBuildProjectFullPath)" TargetFramework="$(TargetFramework)" />
+    <GetTestsProject TargetPath="$(TargetPath)" GetTestsProjectPipeName="$(GetTestsProjectPipeName)" ProjectFullPath="$(MSBuildProjectFullPath)" TargetFramework="$(TargetFramework)" RunSettingsFilePath="$(RunSettingsFilePath)" />
   </Target>
 </Project>

src/Tasks/Microsoft.NET.Build.Tasks/GetTestsProject.cs

@@ -3,6 +3,7 @@
 #pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.
 
 using Microsoft.Build.Framework;
+using Microsoft.Build.Utilities;
 using Microsoft.DotNet.Tools.Test;
 
 namespace Microsoft.NET.Build.Tasks
@@ -21,6 +22,8 @@ public class GetTestsProject : Microsoft.Build.Utilities.Task
         [Required]
         public ITaskItem TargetFramework { get; set; }
 
+        public ITaskItem RunSettingsFilePath { get; set; } = new TaskItem(string.Empty);
+
         public override bool Execute()
         {
             try
@@ -33,7 +36,7 @@ public override bool Execute()
                 dotnetTestPipeClient.RegisterSerializer(new VoidResponseSerializer(), typeof(VoidResponse));
 
                 dotnetTestPipeClient.ConnectAsync(CancellationToken.None).GetAwaiter().GetResult();
-                dotnetTestPipeClient.RequestReplyAsync<ModuleMessage, VoidResponse>(new ModuleMessage(TargetPath.ItemSpec, ProjectFullPath.ItemSpec, TargetFramework.ItemSpec), CancellationToken.None).GetAwaiter().GetResult();
+                dotnetTestPipeClient.RequestReplyAsync<ModuleMessage, VoidResponse>(new ModuleMessage(TargetPath.ItemSpec, ProjectFullPath.ItemSpec, TargetFramework.ItemSpec, RunSettingsFilePath.ItemSpec), CancellationToken.None).GetAwaiter().GetResult();
             }
             catch (Exception ex)
             {