Hello to All,

I want to know that what is exact difference between regression and black box testing?

Regression as we say that it focuses on retesting after changes are made. But this thing also we can do in black box testing i.e retest ater changes. Its regression test needs any test tool?

Please let me know about Regression testing. Is its comes under Black box or White box testing? What are the steps followed to do the regression testing. I am a manual tester and i dont use any test tool yet to do my testing.

Please help me by giving your answer in detail.

Thanks in advance.
Regards,
Jyoti.

hai jyothi,

Black Box Testing

Testing, either functional or non-functional, without reference to the internal structure of the component or system.

Regression Testing
Testing of a previously tested program following modification to ensure that defects have not been introduced or uncovered in unchanged areas of the software as a result of the changes made. It is performed when the software or its environment is changed.

Thanks
Deepasree

HI jyothi,

Black box testing: Testing the application with out looking the code of the application.

Regression testing: Testing the application whether the fixed bug is effecting other parts of the application or not.

Cheers,
Bhaskar Kumar

Thank you so much guys.

Hi,

Yes Regression testing is also Black box testing.

There are several testing tools available to carry out Functional / Regression testing .To name a few Rational Functional Tester, Rational Robot, Quick Test Pro, Silk Test, QA center test partner,e-Test suite,Test partner etc.

White box testing (a.k.a. clear box testing, glass box testing, transparent box testing, translucent box testing or structural testing) uses an internal perspective of the system to design test cases based on internal structure. It requires programming skills to identify all paths through the software.


While white box testing is applicable at the unit, integration and system levels of the software testing process, it is typically applied to the unit. While it normally tests paths within a unit, it can also test paths between units during integration, and between subsystems during a system level test. Though this method of test design can uncover an overwhelming number of test cases, it might not detect unimplemented parts of the specification or missing requirements, but one can be sure that all paths through the test object are executed.
Typical white box test design techniques include:
Control flow testing
Data flow testing
Branch Testing

Best,
Vish