BIND 10 #614: Run unit tests with Valgrind

[BIND 10 Development]

#614: Run unit tests with Valgrind
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                 Reporter:  stephen  |                Owner:  vorner
                     Type:  task     |               Status:  assigned
                 Priority:  major    |            Milestone:  A-Team-
                Component:           |  Sprint-20110309
  Unclassified                       |           Resolution:
                 Keywords:           |            Sensitive:  0
Estimated Number of Hours:  0.0      |  Add Hours to Ticket:  0
                Billable?:  1        |          Total Hours:  0
                Internal?:  0        |
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Comment (by jinmei):

 Additional comments: I've installed valgrind on my macbook pro and ran
 the scripts, finding the following portability issues:
 - -executable option for find wasn't available
 - if [ -n "$FAILED" ] didn't work (-n was considered a program)

 For the first issue, I think we can simply remove this option in practice,
 until we really have a file named "run_unittests" that should be excluded
 and can only be excluded with this option (which doesn't seem to be the
 case for now).

 The second issue can be solved by explicitly specifying 'test' instead of
 [.

 I'm attaching a proposed patch.

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Ticket URL: <http://bind10.isc.org/ticket/614#comment:7>
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