Generating JUnit Testcases

Question

Our application depends on numerous resources that are provided by another system.

To ensure the existence of those resources, we currently have a JUnit test case (probably more an integration test), that takes a list of all the resources as a textfile, fetches each and tracks success/failure.

This is a very long running testCase that is not very "tool friendly". What we would really like to have is something along the lines of one test-method per resource.

I am aware that this is not what JUnit was meant to do. But is there a way to generate those testmethods on the fly?

Maybe something a bit more "elegant" than writing a perl-script to generate hundreds of methods?

Thanks a lot!

score 5 · Accepted Answer · edited May 23 '17 at 09:57

5

You may want to look at parameterized tests. This is easier to achieve in JUnit 4, though can be done in JUnit 3. See this question for code: JUnit test with dynamic number of tests

edited May 23 '17 at 09:57

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answered Feb 09 '09 at 16:53

McDowell

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Jep! Perfect solution, because you could implement an FileInputStream into this paramerized tests to load the resource list to check. – guerda Feb 09 '09 at 20:27
In my oppinion this is a near perfect solution. In IDEA, the parameterized tests sadly collapse to a single one. This means we still don't see at once, which resources were not available. However thanks for the parameterized tests - I didn't knew them. – Mo. Feb 09 '09 at 21:36

score 1 · Answer 2 · answered Oct 30 '10 at 00:26

This: http://github.com/adewale/cq-challenge-markup/blob/b99c098f0b31307c92bd09cb6a324ef2e0753a0b/code/acceptance-tests/AcceptanceTest.java is an example of a class that dynamically generates one test per resource using the JUnit4 @Parameterized annotation

score 0 · Answer 3 · answered Feb 09 '09 at 16:50

You might want to take a look at the TestSuite class, and creating your own instance (rather than letting one of the junit runners just run all the tests in a certain dir) and/or subclassing it - the TestSuite has methods to programmatically addTests to it, and then you can run all the tests within the suite.

Generating JUnit Testcases

3 Answers3