Examples to use for TDD or Test-First with AI

Try them out with JetBrains AI Assistant or JetBrains Junie coding agent.

Example 1: FizzBuzz

With AI Assistant

• Open file FizzBuzzTest
• Open AI Assistant chat
• Ask AI Assistant: "Implement code that passes the tests"
• Make sure the file is attached to the prompt
• Copy the provided code to the right location
• Run tests

With Junie

• Ask Junie: "Implement code that passes the tests in FizzBuzzTest.java"
• Click "Run tests" when Junie asks to run the tests

Example 2: Calculator

With AI Assistant

• Open file CalculatorTest
• Open AI Assistant chat
• Ask AI Assistant: "Implement code that passes the tests"
• Make sure the file is attached to the prompt
• Copy the provided code to the right location
• Run tests Note: Since this example requires multiple classes/files to be created, AI Assistant isn't always able to solve it.

With Junie

• Ask Junie: "Implement code that passes the tests in CalculatorTest.java"
• Click "Run tests" when Junie asks to run the tests