what is mutation testing? when it is use in the phase?

Answer Posted / ravi chaitanya reddy.k

Mutation Testing means a complex change in coding. It means
make a change in coding and run the test if all tests are
passed in that changing area then the test is failed. If
some of the tests are failed in that changing area then the
test is passing. This type of testing is called Mutation
testing. This testing is done in Unit testing.

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