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    What are the basic difference between testing and debugging?


    Of course, they are different things. Testers perform testing in order to find all possible defects. The debug is performed by developers in order to find the causes of defects and for their removal.


    It is a cold war between the testing and development teams.
    Testing: As you know, teams are very keen on finding all possible defects on whatever they are testing. The defects would be assigned to development team.
    Debugging: The development team who work on the defect fixing, will carry out debugging the defect to find the root cause and to remove it.


    Yes, I think the ideas pointed out by @gohar and @thoughtsofdeva are the differences between testing and debugging.

    There are specific situations where these activities are somehow done together by testers and developers. When a problem is discovered by a tester and it can be reproduced only in some situations (specific workflows, input data, configurations etc.), the developer may ask the tester to help him by running the test step by step. Thus, developer can look on each step in the logs and check the code to investigate and find the issue.
    It can require further analysis to identify the problem and developer may need to compare different test runs (like tests that work correctly or tests that fail but have other sets of data). The tester should repeat the step by step procedure for each run while the developer checks the code and the logs at each step.



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