Test Driven Development is a trend concept nowaways and it’s getting attention even more with the utilization of Python, and its unit test frameworks. I personally use the Unit test framework [1] straight in the command line and sometimes use the watch command to periodically test the code without need to run the script by hand [2]

Steps

TDD is basically divided in the following steps:

1. Add a test
2. Add the new test and run seeing if it will fail
3. Writes the test to pass, i.e. the function that will make it pass
4. Run again the tests
5. Refactor the code – i.e. adequate the code to the new needs

Structure

The tests are basied in the follow struture:

1. setup
2. execution
3. validation
4. clean up

[1] https://docs.python.org/2/library/unittest.html

[2] http://www.linfo.org/watch.html