This repository contains a project for Eclipse that lets you explore test-driven development. It uses the JUnit 4 testing library.

Clone this repository and import the project into Eclipse.

The src/Car.java class contains a simple class representing a car, and a few methods are already implemented. You'll use test-driven development to add some new features to the class.

The src/CarTest.java file contains unit tests for the existing functionality of the Car object, but you'll need to add more.

1. Implement the toString() method of Car by using the existing unit test as a guide. Return a string that matches the expectation of the test.

2. Implement the decelerate() method of Car by writing a unit test first. Ensure that when you call the decelerate() method and pass an amount as its argument, that the speed property decreases by that amount.

3. Write another test that ensures that you can't decelerate more than 0. Then modify the implementation of the decelerate() method so that new test passes.

1. Do not write any code unless it's to make a failing test pass.
2. Do not write any more of a unit test than is sufficient to fail, and not compiling is failing.
3. Do not write more code in the Car class than you need to make the current unit test pass.