This repository contains a minmal example of a test driven development approach.
The code is about the function called validate_username(username) that takes a string representing a username and will return a boolean value that indicates if the username is valid or not.
Install dependencies
bundle install
Watch files and run tests automatically
bundle exec guard (in base directory of repo)
Have multiple files/windows open at the same time:
./spec/validate_username_spec.rbfor the test code./lib/validate_username.rbfor the implementation code- Terminal running the
guardtest runner
How to implement a new trait or feature:
- Add a new description/expectation to the test file
- See the test fail
- Implement a solution in the code file
- See test go green again
- Repeat