This document discusses test-driven development (TDD) and its benefits. It recommends using TDD to check that software functions as required, allow for quick code changes, and help understand code design. TDD helps determine when to stop coding, can document what code should do, and leads to decreased costs and faster time to market. The document provides examples of TDD frameworks for Meteor projects and outlines a sample rock-paper-scissors API requirement and test.

1. Test-driven
development
Why we should use it

2. The need for testing
To err is human
( Everyone makes mistakes )
and it is okay

3. The need for testing
To check if the software is functioning as per the requirements.
Tests allows you to make big changes to code quickly.
Tests help you really understand the design of the code you are working on.

4. The need for testing
Precisely locating the source of bugs
they act as a safety net
See if other parts of the code still run when you changed something

5. What is Test-driven development

6. What is Test-driven development

7. Benefits of tdd (for developer)
TDD helps you to realise when to stop coding.
Contrary to popular belief unit testing does not mean writing code slower.
Good unit tests can help document and define what something is supposed to do.

8. Benefits of tdd (sales/product Team)
Decreased Software Development Costs
Faster time to Marke
Determining When a Product Is Good Enough to Release

9. Benefits of tdd (sales/product Team)
From “Test-driven JavaScript Development” by Christian Johansen

10. Benefits of tdd (sales/product Team)
Source: http://www.nist.gov/director/planning/upload/report02-3.pdf

11. Transition to tdd
1. New features should be writen in a tdd manner.
2. test reviews in the beginning.
3. Slowley but steady increase test coverege in old code.

12. Testing in Meteor
Name Velocity laika chimp gagarin Meteor 1.3
Version
soon
deprecated
deprecated v0.30 v0.4.12 (alpha)
Test runner
mocha /
cucumber
mocha mocha
Assertion
Library
chai chai chai
webdriver
Ghostdrive /
Selenium
chromedriver
/ Selenium

13. Setting up gagarin
1. create a folder test/gagarin in your project
2. $ sudo npm -g i gagarin
3. Start your webdriver
4. Start meteor
5. $ gagarin -B -c -m

14. example Requirment rock, paper, scissors rest api
winning function:
Player has rock and Computer has Paper
- Computer should win
Player has “something” and Computer has paper
- Should return a Error

15. Quick example

18. Quick example