explain difference in Smoke testing and sanity testing

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Accepted Answer

Smoke testing is a subset of regression testing, while sanity testing is a subset of acceptance testing.

Smoke testing is done to check if the critical functionalities of the software are working fine after changes.
Sanity testing is done to check if the specific functionalities are working fine after bug fixes or minor changes.
Smoke testing is a broad and shallow approach, while sanity testing is a narrow and deep approach.
Smoke testing is usually done before detailed testing, while sanity testing is done after detailed testing.
Example: Smoke testing would involve checking if the software can launch successfully, while sanity testing would involve checking if a specific feature like login functionality works after a bug fix.

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