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Regression Testing
Usage:
- All aspects of system remain functional after testing.
- Change in one segment does not change the functionality of other segment.
Objective:
- Determine System documents remain current
- Determine System test data and test conditions remain current
- Determine Previously tested system functions properly without getting effected though changes are made in some other segment of application system.
How to Use
- Test cases, which were used previously for the already tested segment is, re-run to ensure that the results of the segment tested currently and the results of same segment tested earlier are same.
- Test automation is needed to carry out the test transactions (test condition execution) else the process is very time consuming and tedious.
- In this case of testing cost/benefit should be carefully evaluated else the efforts spend on testing would be more and payback would be minimum.
When to Use
- When there is high risk that the new changes may effect the unchanged areas of application system.
- In development process: Regression testing should be carried out after the pre-determined changes are incorporated in the application system.
- In Maintenance phase : regression testing should be carried out if there is a high risk that loss may occur when the changes are made to the system
Example
- Re-running of previously conducted tests to ensure that the unchanged portion of system functions properly.
- Reviewing previously prepared system documents (manuals) to ensure that they do not get effected after changes are made to the application system.
Disadvantage
- Time consuming and tedious if test automation not done
Regression Testing - Software Testing - Network Regression Testing - Web & Automated Regression Testing
Recommended Resources
• Testing Interview Questions -
http://www.coolinterview.com/type.asp
• Testing Tools Interview Questions -
http://www.coolinterview.com/type.asp
• What is Software Testing?-
http://en.wikipedia.org/wiki/Software_testing
• Software QA & Testing Resource Center-
http://www.softwareqatest.com/
• Testing Faqs-
http://www.testingfaqs.org/
 Get Free Software Testing eBook when you join One Stop Testing!
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