What is Regression Testing. Functional Testing, Smoke testing?

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Regression testing ensures changes don't break existing functionality. Functional testing checks if software meets requirements. Smoke testing checks basic functionality.

Regression testing verifies that changes to the software do not break existing functionality
Functional testing checks if the software meets the specified requirements
Smoke testing checks the basic functionality of the software
Regression testing is usually automated
Functional testing can be manual or automated
Smoke testing is usually done before more comprehensive testing
Example of regression testing: testing a new feature does not break an existing feature
Example of functional testing: testing if a login page works as expected
Example of smoke testing: testing if the software launches without errors

What is Regression Testing. Functional Testing, Smoke testing?

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