automated testing

The 'what', 'when', 'why' and 'how'







“If you don’t like unit testing your product, most likely your customers won’t like to test it either.” - Anonymous

why not?



Slower feature development

It's too hard

I don't really need tests, my code is fine

QA will find my bugs

I'll do it later

Why?



Re-evaluate your code (DDT) 

Plan out your code (TDD)

Slow down

Important w/ JavaScript

long-term benefits



Easier to refactor

Prevent regressions

Documentation

When?



Test Driven Development

Development Driven Testing

How?


Jasmine

Mocha

QUnit

Karma*

Spock

TestNG / JUnit

End-to-end tools



Geb

Protractor

Watir

writing testable code




Separation of concerns

Small methods

Modularization

What?



Your code

3rd-party code

Anything non-trivial

Angular



Controllers (unit)

Services (unit)

Filters (unit or e2e)

Directives & views (unit or e2e)


All of your code





/^JS[LH]int$/

JSHint vs JSlint





JSLint is less opinionated & more practical

jshint is important




For common "newbie" mistakes

For typos

example jshint warnings


simple bad references
for in  loops w/out  hasOwnProperty
no brackets around loop/conditional body
===  vs ==
hoisting issues
loops inside functions

+ 63 more

links and notes






automated testing

By Ray Nicholus

automated testing

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