What is difference between regression and functional testing

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  • Aug 18th, 2011

regression testing will be conducted to identify the side effects because of the bug fixes.

functional testing means testing an application with respect to the customer requirements. i.e flow of control etc.,

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Functional Testing is done to check the functionalities of the application (i.e. individual modules and application as a whole) according to client requirement.

Regression Testing is done to check whether any side effect is introduced into the application due to fixation of any bug in a module or due to addition/deletion of any module.

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sagar More

  • Mar 3rd, 2012

Regression Testing : It evaluates weather the changed component has introduced any bug from the unchanged component...

Functional testing : Checking the functionality of system according to customer requirements...


  • Mar 14th, 2014

Testing of application again and again to make sure the new functionality or bug fixes is not impact the already tested old functionality is called regression testing.

Functional testing is testing the actual logic of the application is meant for.

Functional testing covers how well the system executes the functions it is supposed to execute—including user commands, data manipulation, searches and business processes, user screens, and integrations. Functional testing covers the obvious surface type of functions, as well as the back-end operations (such as security and how upgrades affect the system).

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