Difference between Smoke and Sanity Testing

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Accepted Answer

Smoke testing is a shallow and wide approach to testing while Sanity testing is a narrow and deep approach to testing.

Smoke testing is performed to check if the critical functionalities of the application are working fine.
Sanity testing is performed to check if the bugs have been fixed and the new functionalities are working fine.
Smoke testing is done before the detailed testing while Sanity testing is done after the detailed testing.
Smoke testing is a subset of Acceptance testing while Sanity testing is a subset of Regression testing.
Example of Smoke testing: Checking if the login page is working fine.
Example of Sanity testing: Checking if the bug related to the login page has been fixed.

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