what is diff b/w resting & regression testing?

Answer Posted / vishweshwar reddy

as for my knowledge,

one performs testing on already tested functionality with
different sets of values in order to ensure that the defect
is reproducable or the functionality is working fine is
called retesting.
one perform testing on already tested functionality in 2
scenarios
1.whenever a defect is rised by test engr and rectified by
the developer then it is released to the testing
department,once the next build is released to the testing
dept, the test engr will perform testing and complete
already tested functionality in order to ensure that the
old functionality remains same.
2.whenever the new changes are added to the existing module,
the test engr will perform testing on already tested
functionality in order to ensure that its old functionality
remains same.

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