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Difference Between Smoke Testing and Regression Testing

Smoke testing occurs early in the SDLC, whereas regression testing occurs afterwards. So let's talk about how smoke testing and regression testing are different from one another.

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Difference Between Smoke Testing and Regression Testing

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  1. Difference between Smoke Testing and Regression Testing What is Smoke testing? The testing method determines the stability of a deployed software build. It provides a sort of confirmation to the QA team to carry on with different levels of testing. A minimal set of tests are run on each build to test software functionalities. This testing method ensures that there are no show-stoppers in the build during the testing process. It is also known as “Build verification testing.” What is Regression testing? It is a testing method that ensures the new changes introduced in the code do not alter or modify the existing functionalities of a software application. Already executed test cases are partially or fully selected and then re-executed to ensure that the existing functionalities are working as expected. The objective is to ensure that the existing functionalities are working fine despite making changes or adding new features to the code.

  2. Following are the differences between smoke testing and regression testing: Smoke testing In simple terms, smoke testing meaning it verifies the crucial features and build the stability Regression testing includes the test cases of a smoke test and covers only the core functionalities Developers and testers are responsible for performing smoke tests The cost involved in conducting the testing is relatively low The testing process is conducted quickly to confirm whether to reject or accept a build It is a surface-level testing where the system’s stability is verified This testing method is always followed by a regression test This testing method is scripted or documented Regression testing Basically, software regression testing ensures that the change hasn’t affected any existing functionality The test cases are obtained from Software Requirement Specification (SRS) or functional specification Testers are responsible regression tests The cost involved in conducting the testing is quite high Regression tests are not accountable for rejecting or accepting a build It is a deep-level testing where the system’s rationality is verified This testing method is performed throughout the testing phase This testing method is neither scripted nor documented There is a lot of effort, time, and resources required to conduct the testing. It is not an acceptance type of testing, and the functionalities are tested. for performing There is not much effort, resources, and time required to conduct the testing It is an acceptance type of testing where the build is validated so that further testing is prevented If it doesn’t pass

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