Testing JavaScriptFront Trends 2010

whoami

• Morgan Roderick, @mrgnrdrck

• Web developer

• First web page in 94, have used <blink>, <marquee>, <font> ...

• Mostly freelancing since 2001

• Currently on contract with Nokia Gate5

• Why do we write code?

• Why should we write tests?

• Getting started with Unit Tests

Todays talk

Why do we write code?

Famous fails!

• 1985-1987 Therac 25 Medical accelerator, 5 patients dead, several injured

• 1994 Intel Pentium floating point division bug (FDIV). $475M

• 1998 NASA space probe Mars Climate Orbiter burns up in atmosphere. $327.6M.

Moar famous fails

• 2000 National Cancer Institute, Panama City, radiation therapy planning software, 8 patients die, 20 severely injured

• ...

• 2010 Toyota recalls cars, est. $2B

• 2010 Twitter suffers XSS attack

Why should we test?

Pick a test framework

DOH

JsUnit

QUnit

Crosscheck

J3Unit

JSNUnit

YUI TestUnitTesting

Jasmine

screw-unit

Test.Simple

TestCase

JSTest

jsUnity

RhinoUnit

JasUnit

FireUnit

JsTestDriver

SinonJS

Pick a test framework

DOH

JsUnit

QUnit

Crosscheck

J3Unit

JSNUnit

YUI TestUnitTesting

Jasmine

screw-unit

Test.Simple

TestCase

JSTest

jsUnity

RhinoUnit

JasUnit

FireUnit

JsTestDriver

SinonJS

JsTestDriver TestCase

Testing PubSubJShttp://github.com/mroderick/PubSubJS

PubSubJS Requirements

• Subscribe to messages

• Publish messages

• Unsubscribe from messages

PubSubJS Overview

subscribe

test subscribe

unsubscribe

test unsubscribe

test unsubscribe

publish

publish contd.

test publish

test publish

test publish

test publish

Thank you

• http://github.com/mroderick/PubSubJS

• http://code.google.com/p/js-test-driver/

• http://cjohansen.no/sinon/