what is equivalence class partition?

Answer Posted / narender kaushal

Equivalence class partitioning

Equivalence partitioning is a method for deriving test
cases. In this method, classes of input conditions called
equivalence classes are identified such that each member of
the class causes the same kind of processing and output to
occur. If the system were to handle one case in the class
erroneously, it would handle all cases erroneously.

Equivalence partitioning drastically cuts down the number
of test cases required to test a system reasonably. It is
an attempt to get a good 'hit rate', to find the most
errors with the smallest number of test cases.

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