🍰 Dessert - AI-Powered Test Generation Plugin

Making automated testing a piece of cake 🍰 — Generate comprehensive unit tests directly from your debugger using AI.

🎯 Why Dessert Makes Testing a Piece of Cake

Traditional test writing is time-consuming and often disconnected from real runtime behavior. Dessert changes this by implementing a sophisticated approach that captures comprehensive context from your debugging session and uses Retrieval Augmented Generation (RAG) to produce tests that reflect actual runtime scenarios rather than theoretical edge cases.

✨ Features

• 🔍 Debugger Integration: Generate tests directly from debugger variables and stack frames
• 🤖 Multi-AI Support: Works with OpenAI, Google Gemini, and Anthropic Claude
• 🌐 Multi-Language: Supports Java, Kotlin, and Scala
• 🏗️ Build System Aware: Automatically detects Gradle, Maven, SBT, and Bazel projects
• 📁 Smart File Management: Creates or extends existing test files intelligently
• 🎯 Context-Aware: Captures method signatures, variables, and build configurations

🚀 Quick Start

Prerequisites

• IntelliJ IDEA 2025.1 or later
• Android Studio 2025.1 or later
• API key for one of the supported AI providers (OpenAI, Gemini, or Claude)

Installation

1. Download the plugin from the JetBrains Plugin Repository
2. Install via File → Settings → Plugins → Install Plugin from Disk
3. Restart IntelliJ IDEA (or Android Studio)

Configuration

Set the following environment variables before starting IntelliJ IDEA (or Android Studio):

Required: Your AI provider API key

• export DESSERT_API_KEY=your_api_key_here

Optional: AI provider (default: gemini)

• export DESSERT_AI_PROVIDER=gemini # Options: openai, claude, gemini

Optional: Model name (uses provider defaults if not specified)

• export DESSERT_MODEL_NAME=gemini-2.5-flash

Default Models:

• OpenAI: o4-mini
• Claude: claude-3-7-sonnet-latest
• Gemini: gemini-2.5-flash

🎯 How to Use

1. Set a breakpoint in your code and start debugging
2. Pause execution at the desired location
3. Right-click in the debugger variables panel
4. Select "Generate Test with Dessert" from the context menu
5. Wait for AI to analyze your code and generate tests
6. Review the generated test file that opens automatically

Supported Project Structures

Build Systems:

• Gradle (build.gradle / build.gradle.kts)
• Maven (pom.xml)
• SBT (build.sbt)
• Bazel (WORKSPACE, BUILD files)

Languages:

• Java (.java files)
• Kotlin (.kt files) - including Kotlin Multiplatform
• Scala (.scala files)

🏗️ How It Works

1. Capture Context: Extracts current stack frame, variables, method signatures, and build configuration
2. AI Analysis: Sends captured data to your chosen AI provider with optimized prompts
3. Test Generation: AI generates comprehensive unit tests following best practices
4. File Management: Creates new test files or extends existing ones in the appropriate test directory
5. IDE Integration: Opens generated tests in the editor for immediate review

📁 Test File Organization

Dessert intelligently places test files based on your project structure:

• Standard Projects: src/test/{language}/generated/
• Kotlin Multiplatform: shared/src/{sourceSet}Test/kotlin/generated/
• Bazel Projects: Alongside source files with appropriate BUILD targets

🔧 Advanced Configuration

Custom Model Selection

OpenAI models

• export DESSERT_MODEL_NAME=gpt-4
• export DESSERT_MODEL_NAME=gpt-3.5-turbo

Claude models

• export DESSERT_MODEL_NAME=claude-3-opus-20240229
• export DESSERT_MODEL_NAME=claude-3-sonnet-20240229

Gemini models

• export DESSERT_MODEL_NAME=gemini-pro
• export DESSERT_MODEL_NAME=gemini-2.5-flash

Troubleshooting

Plugin not appearing in context menu?

• Ensure you're debugging and execution is paused
• Check that you're right-clicking in the debugger variables panel

API errors?

• Verify your API key is correctly set
• Check your internet connection
• Ensure your AI provider account has sufficient credits

Test files not opening?

• Check IDE permissions for file creation
• Verify project structure is supported

🤝 Contributing

We welcome contributions! Please see our GitHub repository for:

• 🐛 Bug reports
• 💡 Feature requests
• 🔧 Pull requests
• 📖 Documentation improvements

Development Setup

1. Clone the repository
2. Open in IntelliJ IDEA (or Android Studio)
3. Configure Gradle JVM to Java 17+
4. Run ./gradlew runIde to test the plugin

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

👨‍💻 Author

Michael Solovev - smijsm@gmail.com

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Happy Testing! 🧪✨