Psx Test Generator

A Visual Studio extension that restores the "Create Unit Test Project" context menu option that Microsoft removed from recent versions of Visual Studio.

Features

Right-click in any of these locations to create a fully configured MSTest test project:

Solution Explorer — Project Node

Right-click any project → Create Unit Test Project

Creates a test project referencing the selected project with a placeholder test class.

Solution Explorer — C# File

Right-click any .cs file → Create Unit Test Project

Creates a test project and scaffolds test classes with method stubs for every public class found in the file.

Code Editor

Right-click inside a .cs file → Create Unit Test Project

Creates a test project and scaffolds a test class for the class at your cursor position. Public methods are detected and stubbed automatically.

What Gets Generated

Test Project (.csproj)

The generated project follows Psx workspace conventions:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup Label="Globals">
    <SccProjectName>SAK</SccProjectName>
    <SccProvider>SAK</SccProvider>
    <SccAuxPath>SAK</SccAuxPath>
    <SccLocalPath>SAK</SccLocalPath>
  </PropertyGroup>

  <PropertyGroup>
    <TargetFramework>net10.0</TargetFramework>
    <LangVersion>latest</LangVersion>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
    <RootNamespace>Psx.Example.Tests</RootNamespace>
    <IsPackable>false</IsPackable>
    <IsTestProject>true</IsTestProject>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="MSTest" Version="3.8.3" />
  </ItemGroup>

  <ItemGroup>
    <ProjectReference Include="..\Psx.Example\Psx.Example.csproj" />
  </ItemGroup>

</Project>

• Location: Sibling folder in Dev/ (e.g., Psx.Example.Tests/ alongside Psx.Example/)
• Target framework: Auto-detected from the source project (platform suffixes like -windows are stripped)
• TFVC: SAK properties included; .slnx TFVC entries updated automatically
• Project reference: Points back to the source project via relative path

Test Classes

When source analysis is available (file or editor context), test stubs are scaffolded from your code:

namespace Psx.Example.Tests;

[TestClass]
public class OrderServiceTests
{
    [TestMethod]
    public void PlaceOrder_Should()
    {
        // Arrange

        // Act

        // Assert
        Assert.Inconclusive("Not implemented");
    }

    [TestMethod]
    public async Task CancelOrderAsync_Should()
    {
        // Arrange

        // Act

        // Assert
        Assert.Inconclusive("Not implemented");
    }
}

• One test method stub per public method on the source class
• Async methods generate async Task test methods
• Assert.Inconclusive marks stubs as incomplete (visible in Test Explorer without failing the build)
• When no source analysis is available (project-level), a single placeholder test class is created

Installation

From VSIX File

1. Build the project (see below)
2. Find PsxTestGenerator.vsix in bin\Release\net48\
3. Double-click the .vsix file to install
4. Restart Visual Studio

Supported Versions

• Visual Studio 2022 (17.8 and later)
• Visual Studio 2025
• Visual Studio 2026

Community, Professional, and Enterprise editions are all supported.

Building

Prerequisites

• Visual Studio 2022 or later with the Visual Studio extension development workload
• .NET Framework 4.8 targeting pack

Build

dotnet build PsxTestGenerator\PsxTestGenerator.csproj -c Release

Debug

Press F5 in Visual Studio to launch the Experimental Instance with the extension loaded. The project is pre-configured with:

StartAction: Program
StartProgram: $(DevEnvDir)devenv.exe
StartArguments: /rootsuffix Exp

Behavior Notes

• Duplicate detection: If a test project already exists at the expected path, a warning is shown and the existing project is added to the solution (if not already present).
• .slnx support: The extension updates TFVC source control properties (SccNumberOfProjects, SccLocalPath, SccProjectName, SccProjectUniqueName) in .slnx solution files automatically.
• .Designer.cs files: Excluded from the code editor and file context menus since they contain generated code.
• Visibility: The context menu items only appear on C# files and project nodes — they are hidden for other file types.

Project Structure

PsxTestGenerator/
├── source.extension.vsixmanifest    — VSIX metadata and installation targets
├── PsxTestGeneratorPackage.cs       — Extension entry point (AsyncPackage)
├── PackageGuids.cs                  — GUIDs for commands and menus
├── Vsix.cs                          — Version and metadata constants
├── Commands/
│   ├── PsxTestGeneratorCommands.vsct — Command table (menu placements)
│   ├── CreateTestFromProjectCommand.cs
│   ├── CreateTestFromFileCommand.cs
│   └── CreateTestFromEditorCommand.cs
├── Services/
│   ├── TestProjectService.cs        — Project creation and solution integration
│   ├── RoslynAnalysisService.cs     — Source code analysis via Roslyn
│   └── TemplateService.cs           — Test class code generation
├── Models/
│   ├── SourceClassInfo.cs           — Class/method metadata
│   └── TestProjectOptions.cs        — Generation configuration
└── Resources/
    └── PsxTestGenerator.ico         — Extension icon