🚀 TestGen Copilot — Enterprise Test Case Generator

AI-powered test engineering assistant that lives inside your IDE. Generate comprehensive test cases, automation code, coverage analysis, and push directly to Azure DevOps — all through GitHub Copilot Chat.

✨ Features

🚀 Quick Start

1. Install

# From VSIX file:
code --install-extension testgen-copilot-1.0.0.vsix

# Or from marketplace (when published):
ext install equiniti.testgen-copilot

2. Configure

Open Settings (Ctrl+,) → search TestGen:

3. Use

Option A: Use the interface (no chat commands)

• Command Palette → TestGen Copilot: Open Interface
• Or chat: @testgen /ui

Option B: Use Copilot Chat (existing flow) Open GitHub Copilot Chat (Ctrl+Shift+I) and type:

@testgen /help
@testgen /role manual tester
@testgen /analyze As a user, I want to login with email and password so I can access my dashboard
@testgen /generate
@testgen /automate

🎭 Role-Based Behavior

🔄 Typical Workflow

1. @testgen /role automation engineer     ← Set your role
2. @testgen /ui                           ← Optional: open the interface
3. @testgen /fetch 12345                  ← Pull user story from ADO
4. @testgen /analyze                      ← Analyze the requirement
5. @testgen /generate                     ← Generate test cases (role-adapted)
6. @testgen /automate                     ← Generate Playwright/Selenium code
7. @testgen /risk                         ← Prioritize by risk
8. @testgen /push #12345                  ← Push to Azure DevOps
9. @testgen /feedback 5 Great output!     ← Rate the quality

📦 Embedded Knowledge Base

The extension includes 7 knowledge documents that are injected into prompts for high-quality output:

🏗️ Project Structure

testgen-copilot/
├── package.json              # Extension manifest + chat participant + settings
├── tsconfig.json             # TypeScript configuration
├── src/
│   ├── extension.ts          # Entry point — registers @testgen participant
│   ├── handler.ts            # Command router
│   ├── types.ts              # TypeScript interfaces
│   ├── commands/             # 13 slash command handlers
│   │   ├── roleCommand.ts
│   │   ├── analyzeCommand.ts
│   │   ├── generateCommand.ts
│   │   ├── automateCommand.ts
│   │   ├── fetchCommand.ts
│   │   ├── pushCommand.ts
│   │   ├── coverageCommand.ts
│   │   ├── gapsCommand.ts
│   │   ├── templatesCommand.ts
│   │   ├── riskCommand.ts
│   │   ├── feedbackCommand.ts
│   │   ├── helpCommand.ts
│   │   └── uiCommand.ts
│   ├── prompts/              # AI prompt templates
│   │   ├── systemPrompt.ts
│   │   └── promptTemplates.ts
│   ├── services/             # External service integrations
│   │   └── adoService.ts
│   ├── knowledge/            # Knowledge base loader
│   │   └── knowledgeBase.ts
│   ├── state/                # Session state management
│   │   └── sessionState.ts
│   ├── webview/              # UI for non-chat usage
│   │   └── testgenPanel.ts
│   └── utils/                # Shared utilities
│       └── llmHelper.ts
├── knowledge/                # Embedded knowledge base files (7 documents)
│   ├── ISTQB-Testing-Techniques.md
│   ├── Test-Case-Templates.md
│   ├── Automation-Best-Practices.md
│   ├── Company-Specific-Standards.md
│   ├── Accessibility-Checklist.md
│   ├── Test-Strategy-Template.md
│   └── ADO-Boards-TestManagement-Reference.md
└── media/
    └── icon.png              # Extension icon

🔨 Development

# Install dependencies
npm install

# Compile TypeScript
npm run compile

# Watch mode
npm run watch

# Package as VSIX
npm run package

# Publish to marketplace
npm run publish

📋 Requirements

• VS Code 1.93.0 or later
• GitHub Copilot Chat extension installed and active
• Azure DevOps PAT (optional — only for /fetch, /push, /coverage, /gaps commands)

🏢 Enterprise Distribution

Option 1: VSIX File (Simplest)

npm run package  # Creates testgen-copilot-1.0.0.vsix
# Share the .vsix file — users install with:
code --install-extension testgen-copilot-1.0.0.vsix

Option 2: Private Marketplace

Publish to your organization's private VS Code marketplace or Azure DevOps Artifact feed.

Option 3: Public Marketplace

npm run publish  # Requires vsce and publisher account

Wider Team Rollout Checklist

1. Pilot validation (2–3 squads)
   • Run: @testgen /featuremine 12345 → @testgen /generate → @testgen /executor run playwright → @testgen /defectsync
   • Capture at least one successful and one failure-path run
2. ADO connectivity baseline
   • Verify PAT or MCP mode setup using @testgen /help
   • Confirm bug create/update permissions in target project
3. Guardrails baseline
   • Confirm testgen.maxInputChars is set to team standard
   • Confirm testgen.enableAuditLogs is enabled for rollout cohorts
   • Verify blocked prompts and redaction behavior in chat output
4. Packaging and distribution
   • Build VSIX with npm run package
   • Share install command: code --install-extension testgen-copilot-1.0.0.vsix
5. Hypercare (first 2 weeks)
   • Track failures with chat trace IDs shown in error messages
   • Review structured audit records from extension global storage (audit.log.jsonl)
   • Collect feedback via @testgen /feedback

📄 License

MIT — Built by Equiniti/Astrella QA Engineering Team