Regression Testing

Definition of Regression Testing:

Regression is performing to confirm the adversely affected existing features due to recent program or the code change. Mean re-executing or again executed the already executed test cases to confirm the existing functionality.

So we can ensure that this testing is done only to confirm the new changes or new code doesn’t have any side effects with working of existing functionalities. It confirm the old code existing functionality is ok and working Fine.

Requirement of Regression Testing:

It is required when there are

i.                    Modifying in the source code and change in requirement, according to requirement provided by client

ii.                  Software has been upgraded with newly feature

iii.                Fixing the Bugs

iv.                Fixing the Performance issue

Techniques of Regression Testing:

Following are three techniques of Regression Testing

Retest All: in this technique all test cases need to execute to confirm the newly changes effects on previous working code.

Regression Test Selection: RE-executing all the test cases is very time expensive process. So to avoid this we need to categorize the test cases into two categories.

i.                    Reusable Test Cases – these test cases can be used for regression testing.

ii.                  Obsolete Test Cases – These can be ignoring for regression categories.

Prioritization of Test Cases: From Reusable test cases if we have lack of time, Then we will only execute the high priority test cases, instead of all.

Regression Test Cases selection:

i.                    Test Cases which can be execute easily and bug can found easily

ii.                  Test cases for those functionalities which are clear visible to the Testers.

iii.                Selected test cases should verified the product core feature

iv.                Recently changes test cases

v.                  Test cases for all integrations

vi.                All test cases complexity.

vii.              Test Cases for boundary value.

viii.            Sample of Fail Test cases and successfully test cases

Testing Tools for Regressions:

-          HP Quick Test Professional

-          Rational Functional Tester (RTF)

-           

Regression Testing and configuration Management

What is the Difference in between the Regression testing and Re-testing?

Retesting mean retesting the reported bug after the fixing of that bug and

Regression means confirm the side effect of latest changes.

Regression Testing Challenges: Reducing the test cases to the optimum level is very challenging task.

Software Testing Principle	Software Development Life Cycle	Unit Testing
Integration Testing	System Acceptance Testing	Sanity and Smoke Testing
Regression Testing	Non Functional Testing	Test Case
Test Scenario	Software Testing Rules	SQL For Software Testing
Test Case Design and Example	Test Base	Traceability Matrix
Boundary Value analysis	Decision Table in Software Testing	State Transition Definition
Use Case Testing	Testing Review	Techniques of Test Estimation
Test Plan Structure	Definition of Bug	Bug Life Cycle
Automation Testing Tools	Test Web Based Application	Software Testing Types
Software Testing Techniques	Techniques in Software Testing	Test Data
Software Testing Life Cycle	Black Box Testing	Difference between Black Box testing and White Box Testing
Smoke and Sanity Testing	Testing Methodology	Extreme Programming
White Box Testing	System Software Testing	Performance Testing
Usability Testing	User Acceptance Testing	Regression Testing
MANUAL SOFTWARE TESTING	Automation software Testing	Functional Testing

What is , Definition of Regression Testing, requirement and Techniques of Regression Testing, Regression Test Cases and test tools selection, Real world scenarios for regression testing, Difference in between the Regression testing and Re-testing

MOBILE APPS    QTP TESTING QUESTIONS  MANUAL TESTING  ANDROID APPS