what is equivalence class partition?

Answer Posted / sanjana

equivalence partition is a black box technique for writting
test cases.
equivalence partition is process of reducing the hung
(infinite) set of possible into much smaller but still
equally effective.
In other word partition input condition which is tested,
where each class representative(cover) a large set of other
possible tests.
In equivalence partion:-
1) Range :- one valid two invalid
2) specific set:- one valid one invalid.
3) number:- one valid two invalid

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