[tahoe-lafs-trac-stream] [Tahoe-LAFS] #2891: fix intermittent test coverage

[Tahoe-LAFS]

#2891: fix intermittent test coverage
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     Reporter:  warner  |      Owner:
         Type:  defect  |     Status:  new
     Priority:  normal  |  Milestone:  undecided
    Component:  code    |    Version:  1.12.1
   Resolution:          |   Keywords:
Launchpad Bug:          |
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Comment (by Brian Warner <warner@…>):

 In [changeset:"3f2f7dfb05ad7f505b70323459aec8d70d2a3ab5/trunk"
 3f2f7df/trunk]:
 {{{
 #!CommitTicketReference repository="trunk"
 revision="3f2f7dfb05ad7f505b70323459aec8d70d2a3ab5"
 dictutil: fix bug in str(ValueOrderedDict), and improve test coverage

 It looks like str() was meant to truncate the dict, but a missing i+=1
 meant
 that it never actually did. I also changed the format to include a clear
 "..." in case we truncate it, to avoid confusion with a non-truncated dict
 of
 the same size.

 This also improves test coverage in subtract() and
 NumDict.item_with_largest_value().

 refs ticket:2891
 }}}

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2891#comment:3>
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