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Testing for an error using exception handling - the stupid way

/ Published in: Java
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I was refactoring code lately, changed a method to return null instead of throwing an error - yet this test kept working. I did not get why for quite some time.

Lesson learned: Never rely on Eclipse generating a try-catch-block without actually looking what kind of exception or error it catches.

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  1. public void testShouldNotFindAfterDeletion(){
  2.    manager.createContact(contact);
  3.    manager.deleteContact(contact.getID());
  4.  
  5.    /* now try to read it again to make sure the delete request works: */
  6.  
  7.    try {
  8.       manager.getContact(contact.getID()); //this throws an AssertionError.
  9.       fail("Should not reach this step, should throw exception first"); //mistake that should have been obvious: This also does.
  10.    } catch (AssertionError e){
  11.       //succeed
  12.    };
  13. }

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