[Xapian-tickets] [Xapian] #757: Testcase qp_scale1 fails consistently with --enable-log (was: Testcase qp_scale1 fails consistently)

[Xapian]

#757: Testcase qp_scale1 fails consistently with --enable-log
------------------------+-----------------------------
 Reporter:  gp1308      |             Owner:  olly
     Type:  defect      |            Status:  assigned
 Priority:  low         |         Milestone:  1.4.6
Component:  Test Suite  |           Version:
 Severity:  normal      |        Resolution:
 Keywords:              |        Blocked By:
 Blocking:              |  Operating System:  All
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Changes (by olly):

 * cc: olly (removed)
 * status:  new => assigned
 * component:  Other => Test Suite
 * milestone:   => 1.4.6


Comment:

 > The logging certainly can cause issues - e.g. it can turn a method which
 takes a `Query` object from `O(1)` to `O(n)` by calling
 `Query::get_description()` when it logs the parameter value.

 This is unfortunate, but seems hard to avoid as creating a query object's
 description is inherently `O(n)` for a description which fully describes
 the object.

 I think we probably need to disable scaling tests when `--enable-log` is
 used (not ideal but better than them failing) or somehow make them "soft
 fail" (not ideal either).

 We already have an `AUTOMATED_TESTING` check which skips timed tests like
 these (because it's really unhelpful for an automated build to fail its
 tests due to external factors such as abnormal load from other processes
 on the machine), so enable-log could just hook into that.

 Marking for 1.4.6.

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Ticket URL: <https://trac.xapian.org/ticket/757#comment:4>
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