All Pair Testing Technique?

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As per wiki - All-pairs testing or pairwise testing is a combinatorial software testing method that, for each pair of input parameters to a system (typically, a software algorithm), tests all possible discrete combinations of those parameters. Using carefully chosen test vectors, this can be done much faster than an exhaustive search of all combinations of all parameters, by "parallelizing" the tests of parameter pairs.”

In All-Pairs test design, we are concerned with variables of a system, and the possible values each variable could take. We will generate testcases by pairing values of different variables. Don’t re-read that last sentence -- generating testcases using All-Pairs is easier than it sounds. It’s like learning a new card game – at first you have to learn the object of the game, all the rules, and all the exceptions to the rules, and then the tips and strategies. But after you’ve played a few times, it seems naturally easy to play. It’s the same here. The best way to explain how it works is with an example, so keep reading…

Download The tutorial - (by Bernie Berger)