Software Testing

Legacy Code

Problem

Does this accurately describe a Rick-roll?

How about this?

Visual Checks Matter!

Types of CSS Testing

There are four different categories of CSS testing:• Syntax

Did you literally make mistakes in your CSS?

• ProjectDoes this CSS meet the standards you set?

• ReferenceDoes the rendered page look as you expect it to? Cross-browser as well.

• RegressionAfter actions are performed, does the page look as you expect it to?

ToolsHere, we'll list all the known tools, browser extensions and services.

Command-line enabled• Cactus• CSSCritic• cssert• CSSLint• Fighting Layout Bugs• GhostStory• Hardy• Huxley• MinCSS• Mogotest• Needle• PhantomCSS• Wraith• Grunt-Photobox

Manual testing tools• CSSCritic• CSSunit• CSS Test

http://csste.st/tools/

ToolsHere, we'll list all the known tools, browser extensions and services.

Command-line enabled• Cactus• CSSCritic• cssert• CSSLint• Fighting Layout Bugs• GhostStory• Hardy• Huxley• MinCSS• Mogotest• Needle• PhantomCSS• Wraith• Grunt-Photobox

Manual testing tools• CSSCritic• CSSunit• CSS Test

SyntaxProjectReferenceRegression

ToolsHere, we'll list all the known tools, browser extensions and services.

Command-line enabled• Cactus• CSSCritic• cssert• CSSLint• Fighting Layout Bugs• GhostStory• Hardy• Huxley• MinCSS• Mogotest• Needle• PhantomCSS• Wraith• Grunt-Photobox

Manual testing tools• CSSCritic• CSSunit• CSS Test

SyntaxProjectReferenceRegression

ToolsHere, we'll list all the known tools, browser extensions and services.

Command-line enabled• Cactus• CSSCritic• cssert• CSSLint• Fighting Layout Bugs• GhostStory• Hardy• Huxley• MinCSS• Mogotest• Needle• PhantomCSS• Wraith• Grunt-Photobox

Manual testing tools• CSSCritic• CSSunit• CSS Test

SyntaxProjectReferenceRegression

ToolsHere, we'll list all the known tools, browser extensions and services.

Command-line enabled• Cactus• CSSCritic• cssert• CSSLint• Fighting Layout Bugs• GhostStory• Hardy• Huxley• MinCSS• Mogotest• Needle• PhantomCSS• Wraith• Grunt-Photobox

Manual testing tools• CSSCritic• CSSunit• CSS Test

SyntaxProjectReferenceRegression

Techniques

Frozen DOMWith Frozen DOM tests, the idea is to take a snapshot of the DOM structure of the page you wish to test and the styles that are currently applied to those DOM elements.

Image DiffWhen you are happy your page looks how it should, take a screenshot. Whenever a new change is made anywhere in the project, take another screenshot and compare the differences. If there are none, everything looks how it should, if there are differences, something broke.