Ask JUnit to throw exception in method its calling

Question

Is there a way I can tell a JUnit to enter a method and throw an exception so that I can test error handling scenarios?

Thanks

JUnit no, one of the mocking libraries, yes. – Chris K Nov 11 '14 at 12:01 — Chris K, Nov 11 '14 at 12:01

Duncan Jones · Accepted Answer · 2014-11-11T12:07:11.690

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No, not in the way you describe it. A typical solution would be to mock the object in question and instruct the mock to throw an exception when the method is invoked.

Take a look at Mockito, which is a popular framework for mocking in Java. The code would be essentially:

doThrow(new SomeException()).when(yourMockedObject).yourMethod();

edited Nov 11 '14 at 12:07

answered Nov 11 '14 at 12:01

Duncan Jones

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score -1 · Answer 2 · edited May 23 '17 at 11:59

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I think this would be helpful: How do you assert that a certain exception is thrown in JUnit 4 tests?

You will have to simulate those exception scenarios as well.

edited May 23 '17 at 11:59

Community

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answered Nov 11 '14 at 12:01

anand ojha

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-1 The question is how to trigger the exception. This answer doesn't explain how to do that. – Duncan Jones Nov 11 '14 at 12:03

Ask JUnit to throw exception in method its calling

2 Answers2