presented by: brent strange browser compatibility testing risk analysis learn the art of trimming...
TRANSCRIPT
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Presented By: Brent Strange
Browser Compatibility Testing Risk Analysis
Learn the art of trimming browsers from a browser compatibility test list by knowing your users, understanding how the browser works, OS & browser facts versus misconceptions, and grouping browsers by common component versions to remove redundancy.
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Agenda
• Browser History• Who are your users?• Understand The Browser• Understand how browsers differ• Using the Browser Cheat Sheet• Your turn… A Challenge• Browser fact vs. fiction• So what is a browser compatibility defect?• Manage Risk• Questions
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The History
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Browser Statistics
43%
32%
16%4%
3%1% 1%
Browser Version Market Share (01/2008)
Internet Explorer 7.0Internet Explorer 6.0Firefox 2.0Safari 3.0OtherSafari 41Opera 9.x
Source: marketshare.com
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The Task At Hand
..b.. b.. but that’s over 20 released versions…
I want you to test our site with FireFox 1.0 – 2.0 by the end of day!
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How Do You Tackle Testing This?
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The Browser Dissected
Layout Engine
JavaScript Engin
e
Plugins
Shell Featu
res
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Component: Layout Engine
Layout Engine
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Component: Shell Features
Shell Features
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Component: JavaScript Engine
JavaScript Engine
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Component: Plugins
Plugins
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Component Differences
Internet Explorer•Layout Engine: Trident•JavaScript Engine: JScript
FireFox•Layout Engine: Gecko•JavaScript Engine: SpiderMonkey
Netscape•Layout Engine: Gecko•JavaScript Engine: SpiderMonkey
Opera•Layout Engine: Presto•JavaScript Engine: linear_b, futhark
Safari•Layout Engine: KHTML•JavaScript Engine: WebKit (Webcore & JavaScriptCore)
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The Browser Cheat Sheet
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Removing Browser Redundancy
FireFox 2.0.0
FireFox2.0.0.5
FireFox 2.0.0.11
FireFox2.0.0.11
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Removing OS Redundancy
IE 6Ser 2003
IE 6 WinXP
IE 6Win2000
IE 6 WinXP
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Determine the Test Matrix
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Back to: The Task At Hand
End of day?! Hah...I’ll have it done in 2 hours.
I want you to test our site with FireFox 1.0 – 2.0 by the end of day!
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Challenge: One small change?
I only changed 1 line of JavaScript code
Response.Write( Math.Round(3.1415) );to
Response.Write( Math.PI );
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Determine the Test Matrix
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Browser Fact vs. Fiction
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Find Browser Compatibility Defects
So…what is a browser compatibility defect?
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Manage Risk
• Set Expectationso Define Browser Assumptionso Define OS Assumptions
• Define the browser list to be tested• Defend your strategy with facts
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Questions
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About
Download this presentation and handouts at:
http://QAInsight.net