Implement global --config-file and --diagnostic-output-directory options for dotnet test MTP (#50136)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: Youssef1313 <31348972+Youssef1313@users.noreply.github.com>
Co-authored-by: Youssef Victor <youssefvictor00@gmail.com>

Author: Copilot

src/Cli/dotnet/Commands/CliCommandStrings.resx

@@ -565,6 +565,19 @@ This is equivalent to deleting project.assets.json.</value>
     <value>The directory where the test results will be placed.
 The specified directory will be created if it does not exist.</value>
   </data>
+  <data name="CmdConfigFileDescription" xml:space="preserve">
+    <value>Specifies a testconfig.json file.</value>
+  </data>
+  <data name="CmdConfigFilePath" xml:space="preserve">
+    <value>CONFIG_FILE</value>
+  </data>
+  <data name="CmdDiagnosticOutputDirectoryDescription" xml:space="preserve">
+    <value>Output directory of the diagnostic logging.
+If not specified the file will be generated inside the default 'TestResults' directory.</value>
+  </data>
+  <data name="CmdDiagnosticOutputDirectoryPath" xml:space="preserve">
+    <value>DIAGNOSTIC_DIR</value>
+  </data>
   <data name="CmdRootPathName" xml:space="preserve">
     <value>ROOT_PATH</value>
   </data>

src/Cli/dotnet/Commands/Test/MSBuildUtility.cs

@@ -69,14 +69,28 @@ public static BuildOptions GetBuildOptions(ParseResult parseResult, int degreeOf
         string? resultsDirectory = parseResult.GetValue(TestingPlatformOptions.ResultsDirectoryOption);
         if (resultsDirectory is not null)
         {
-            resultsDirectory = Path.Combine(Directory.GetCurrentDirectory(), resultsDirectory);
+            resultsDirectory = Path.GetFullPath(resultsDirectory);
+        }
+
+        string? configFile = parseResult.GetValue(TestingPlatformOptions.ConfigFileOption);
+        if (configFile is not null)
+        {
+            configFile = Path.GetFullPath(configFile);
+        }
+
+        string? diagnosticOutputDirectory = parseResult.GetValue(TestingPlatformOptions.DiagnosticOutputDirectoryOption);
+        if (diagnosticOutputDirectory is not null)
+        {
+            diagnosticOutputDirectory = Path.GetFullPath(diagnosticOutputDirectory);
         }
 
         PathOptions pathOptions = new(
             parseResult.GetValue(TestingPlatformOptions.ProjectOption),
             parseResult.GetValue(TestingPlatformOptions.SolutionOption),
             parseResult.GetValue(TestingPlatformOptions.DirectoryOption),
-            resultsDirectory);
+            resultsDirectory,
+            configFile,
+            diagnosticOutputDirectory);
 
         return new BuildOptions(
             pathOptions,

src/Cli/dotnet/Commands/Test/Options.cs

@@ -5,7 +5,7 @@ namespace Microsoft.DotNet.Cli.Commands.Test;
 
 internal record TestOptions(bool HasFilterMode, bool IsHelp);
 
-internal record PathOptions(string? ProjectPath, string? SolutionPath, string? DirectoryPath, string? ResultsDirectoryPath);
+internal record PathOptions(string? ProjectPath, string? SolutionPath, string? DirectoryPath, string? ResultsDirectoryPath, string? ConfigFilePath, string? DiagnosticOutputDirectoryPath);
 
 internal record BuildOptions(
     PathOptions PathOptions,
@@ -14,5 +14,6 @@ internal record BuildOptions(
     Utils.VerbosityOptions? Verbosity,
     bool NoLaunchProfile,
     bool NoLaunchProfileArguments,
-    int DegreeOfParallelism, List<string> UnmatchedTokens,
+    int DegreeOfParallelism, 
+    List<string> UnmatchedTokens,
     IEnumerable<string> MSBuildArgs);

src/Cli/dotnet/Commands/Test/TestApplication.cs

@@ -115,6 +115,16 @@ private string GetArguments(TestOptions testOptions)
             builder.Append($" {TestingPlatformOptions.ResultsDirectoryOption.Name} {ArgumentEscaper.EscapeSingleArg(resultsDirectoryPath)}");
         }
 
+        if (_buildOptions.PathOptions.ConfigFilePath is { } configFilePath)
+        {
+            builder.Append($" {TestingPlatformOptions.ConfigFileOption.Name} {ArgumentEscaper.EscapeSingleArg(configFilePath)}");
+        }
+
+        if (_buildOptions.PathOptions.DiagnosticOutputDirectoryPath is { } diagnosticOutputDirectoryPath)
+        {
+            builder.Append($" {TestingPlatformOptions.DiagnosticOutputDirectoryOption.Name} {ArgumentEscaper.EscapeSingleArg(diagnosticOutputDirectoryPath)}");
+        }
+
         foreach (var arg in _buildOptions.UnmatchedTokens)
         {
             builder.Append($" {ArgumentEscaper.EscapeSingleArg(arg)}");

src/Cli/dotnet/Commands/Test/TestCommandParser.cs

@@ -236,6 +236,8 @@ private static Command GetTestingPlatformCliCommand()
         command.Options.Add(TestingPlatformOptions.TestModulesFilterOption);
         command.Options.Add(TestingPlatformOptions.TestModulesRootDirectoryOption);
         command.Options.Add(TestingPlatformOptions.ResultsDirectoryOption);
+        command.Options.Add(TestingPlatformOptions.ConfigFileOption);
+        command.Options.Add(TestingPlatformOptions.DiagnosticOutputDirectoryOption);
         command.Options.Add(TestingPlatformOptions.MaxParallelTestModulesOption);
         command.Options.Add(CommonOptions.ArchitectureOption);
         command.Options.Add(CommonOptions.PropertiesOption);

src/Cli/dotnet/Commands/Test/TestingPlatformOptions.cs

@@ -50,6 +50,20 @@ internal static class TestingPlatformOptions
         Arity = ArgumentArity.ExactlyOne
     };
 
+    public static readonly Option<string> ConfigFileOption = new("--config-file")
+    {
+        Description = CliCommandStrings.CmdConfigFileDescription,
+        HelpName = CliCommandStrings.CmdConfigFilePath,
+        Arity = ArgumentArity.ExactlyOne
+    };
+
+    public static readonly Option<string> DiagnosticOutputDirectoryOption = new("--diagnostic-output-directory")
+    {
+        Description = CliCommandStrings.CmdDiagnosticOutputDirectoryDescription,
+        HelpName = CliCommandStrings.CmdDiagnosticOutputDirectoryPath,
+        Arity = ArgumentArity.ExactlyOne
+    };
+
     public static readonly Option<string> MaxParallelTestModulesOption = new("--max-parallel-test-modules")
     {
         Description = CliCommandStrings.CmdMaxParallelTestModulesDescription,