Manual testing 12 - What is system testing? What is End-to-End Testing? What is test environment?

System Testing
End-to-End Testing
Why test environment to be similar to production environment
When we do System Testing
Who will do System Testing
Possible interview questions


System testing: is done after the integration testing.

• The process of testing an integrated system to verify that it meets specified requirements.
• It is end-to-end testing wherein testing environment is similar to the production environment.
• End-to-end testing is a technique used to test whether the flow of an application right from start to finish is behaving as expected.

• Here, we navigate through all the features of the software and test if the end business / end feature works. We just test the end feature and don’t check for data flow or do functional testing and all.

Why test environment to be similar to production environment:

Developers after developing give it to testers they do all testing & then when they find it say 80% bug free they deliver it and at the production end they find out that more than 40% of the features are not working. This is because the environment at the production end could be different from that used in testing.
So, you create the same environment as production environment and test it. Hence the definition end to end testing is done where testing environment is same as production environment.
When we do System Testing?
• It is very important to complete a full test cycle and ST is the stage where it is done
• performed in environment which is similar to the production environment and hence stakeholders can get a good idea of the user’s reaction.
• It helps to minimize after-deployment troubleshooting and support calls.

Who will do system testing?
System testing is performed by experts or independent testers

Possible Interview Questions on system testing

What is System Testing
What is End-to-End Testing