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  1. Derby
  2. DERBY-4732

Release system resources in CanonTestCase thoroughly

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 10.7.1.1
    • Component/s: Test
    • Labels:
      None

      Description

      Now, in the method of compareCanon(String canon) in CanonTestcase, two BufferedReaders----cannonReader and testOutput are closed in try catch block, however if some exception occurs above, the two BufferReaders won't be closed, and related system resources won't be released.

      Besides, a releative problem is about the ByteArrayOutputStream rawBytes in CanonTestcase, it's created in getOutputStream() and closed in compareCanon(String canon). It's pointed out by Knut in Derby-2708, ByteArrayOutputStream's javadoc says that closing it has no effect, so tearDown() method has been added to CanonTestCase and sets rawBytes to null. It certainly can work. However, is it also OK to null out rawBytes in compareCanon(String canon)? If so, it seems cleaner than to null it out in tearDown() method.

      1. derby-4732.patch
        2 kB
        Yun Lee
      2. derby-4732.stat
        0.1 kB
        Yun Lee

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          Hide
          yunlee Yun Lee added a comment -

          In Derby-4732.patch, cannonReader and testOutput are closed in finally block to make sure they can be closed. Besides, rawBytes is nulled out in compareCanon() method and tearDown() method is removed.

          Show
          yunlee Yun Lee added a comment - In Derby-4732.patch, cannonReader and testOutput are closed in finally block to make sure they can be closed. Besides, rawBytes is nulled out in compareCanon() method and tearDown() method is removed.
          Hide
          kristwaa Kristian Waagan added a comment -

          Seems like an improvement.
          I committed the patch to trunk with revision 963716.

          Show
          kristwaa Kristian Waagan added a comment - Seems like an improvement. I committed the patch to trunk with revision 963716.

            People

            • Assignee:
              yunlee Yun Lee
              Reporter:
              yunlee Yun Lee
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              • Created:
                Updated:
                Resolved:

                Development