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Orthogonal Array Testing
What is Orthogonal Array Testing?
Orthogonal array testing is a systematic and statistical way of a black box testing technique used when number of inputs to the application under test is small but too complex for an exhaustive testing.
Orthogonal Array Testing Characteristics:
OAT, is a systematic and statistical approach to pairwise interactions.
Executing a well-defined and a precise test is likely to uncover most of the defects.
100% Orthogonal Array Testing implies 100% pairwise testing.
Example:
If we have 3 parameters, each can have 3 values then the possible Number of tests using conventional method is 3^3 = 27 While the same using OAT, it boils down to 9 test cases.
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