4 Stages of System Testing

Discussion in 'Java' started by szewong@gmail.com, Aug 31, 2007.

  1. Guest

    During system test, it's usually very hard to gauge progress. Most
    teams are still using the percent complete (how much have you tested)
    to report progress. While that's easy, that usually does not tell you
    correctly where you are.

    Today I am starting to use the 4 stage system to tell the team where
    we are in System Testing.

    The basic idea is that as you test, you will start by finding a lot of
    bugs, and as developers keep fixing these top level bugs, you will
    find more as you get deeper into the system. The bug list will grow on
    a daily basis. This is stage 1.

    Then you getting to a point where you are finding less bugs, but the
    bug list is still big because the developers are working on high-level
    bugs and usually takes longer to fix. The bug list is slowly
    shrinking. This is stage 2.

    As developers catch up, you finally get to a point when the bug list
    is empty and the developers starts to fix at a faster pace than the
    testers can find bugs. This is stage 3. The onset of stage 3 is when
    the rate of bug fixing finally go beyond the rate of bug finding. In
    real-life is not aways easy to spot to onset of stage 3 but if the bug
    list stays empty for a few days (assuming daily test cycle), the the
    proejct is in stage 3.

    And finally, the testers will have a hard time finding bugs. And the
    bug fix rate is starting to drop as there are not enough bugs to be
    fix. Then, of course, at the end, the testers cannot find any more
    bugs for bug found and bug fixed are both zero at the end. Stage 4
    starts when the rate of bug fixing slows down.

    Thoughts?

    Sze Wong
    Zerion Consulting

    http://www.zerionconsulting.com
    http://www.szewong.com
    , Aug 31, 2007
    #1
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