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When software developers make tweaks or changes to modify software, a small change can spiral into creating larger unexpected consequences. This is where regression testing comes in.
Regression testing refers to the process of testing software applications to ensure that any changes made haven’t adversely affected the existing functionality of the software/website. It involves re-running functional and non-functional tests to identify whether or not there has been a regression. It can be used by software developers to catch any bugs that may have been introduced as well as to ensure existing bugs remain eradicated.
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Let’s take a look at different situations that warrant the use of regression testing:
There are sundry approaches to regression testing. Let’s take a look at a few:
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Although there are many different approaches to regression testing, they all involve the following basic steps:
The terms ‘re-testing’ and ‘regression testing’ are sometimes confused although they are entirely distinct concepts. Re-testing takes place when an issue in the source code is fixed or when a test case fails and needs to be re-run. Regression testing, on the other hand, is performed when updates or changes lead to new defects in existing functions.
Generally, re-testing is conducted before regression testing practices and is focused on failed test cases. Regression testing, however, is performed on cases that have passed so that new or unexpected bugs can be identified.
Regression testing is a type of software testing used to test the functionality of software after a change or addition has been introduced.
Small changes or tweaks in codes can lead to much larger consequences. Regression testing allows software developers to identify bugs and functionality deficits early in the development cycle and avoid the costs and maintenance required to address built-up defects.
Regression testing is generally used when a new code or program is introduced to existing software. It helps software developers test the functionality of the software after the change is introduced to identify whether or not there has been a regression.
There are many different approaches that can be taken to regression testing, including;
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