Fork this repo and clone it.
Run the tests.
ruby calculator_test.rb
One test should pass, one should fail.
Next steps:
- Fix the first failing test by implementing the subtract method.
- Make sure your code works by running the tests again.
- Write the multiply test (don't implement the multiply method yet).
- Run the tests again. Your new test should fail.
- Now you can implement the multiply method
- Run the tests to make sure your code works.
- Add + commit your changes.
- Repeat steps 3 - 7 to implement: divide, multiply, square