Testing

Precilla Dimpe's picture

I am new to testing. I would like to know the difference between a use case testing, test case and test scenario. Please help

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2 Answers

Steve Poling's picture

You needn't obsess about distinctions between different sorts of tests provided you mind one important guideline: Every test should have one reason to fail. The nature of that one reason will distinguish between unit tests, acceptance tests, integration tests, or whatever.

When I speak of collection tests, I call them a "test suite" and each element of the test suite is a "test case." In something like JUnit or NUnit, a test case is a single public function the framework executes in the course of running all the tests in a test suite.

Unit tests are generally very closely tied to the implementation code and their scope are generally very low level. Things are less cut-and-dried when the scope engages higher levels of functional testing. Use cases and scenarios are generally covered by functional testing. They are less cut-and-dried because it is difficult to avoid writing tests that can fail for multiple reasons (without ruthlessly applying mocks, stubs, and fakes).

If you can, try to keep your focus on the lowest level tests and make sure you not only have complete code coverage in your unit tests, but that every major off-happy-path situation you worry about has a specific test creating the bad situation and asserting the desired error-handling.

Sourabh  Chowdhury's picture

A use case describes us the overview of the software functions to reach the final destination. A test case is a set of conditions or variables under which a tester will determine whether an application, software system, or one of its features is working as it was originally established for it to do. A test scenario contains high-level documentation which describes an end to end functionality to be tested.

Execution of the use case can give the same results for the multiple paths, also different results are possible. The test case gives one results and verifies the function ability. Test scenarios are one-liner. So, there is always the possibility of ambiguity during the testing.

 

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