Key Principles of Test Design?











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Test design is the single biggest contributor to success in software testing. Not only can good test design result in good coverage, it is also a major contributor to efficiency. The principle of test design should be "lean and mean." The tests should be of a manageable size and at the same time complete and aggressive enough to find bugs before a system or system update is released.
Test design is also a major factor for success in test automation. This is not that intuitive. Like many others, I initially also thought that successful automation is an issue of good programming or even "buying the right tool." Finding that test design is the main driving force for automation success is something that I had to learn over the years-often the hard way.
What I have found is that there are three main goals that need to be achieved in test design. I like to characterize them as the "Three Holy Grails of Test Design" - a metaphor based on the stories of King Arthur and the Round Table as the three goals as the three goals are difficult to reach mimicking thestruggle King Arthur’s knights experienced in search of the Holy Grail. This article will introduce the three "grails" to look for in test design. In subsequent articles of this series I go into more detail about each of the goals.
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http://www.logigear.com/january-issue-2011/981-key-principles-of-test-design.html

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