[wp-trac] [WordPress Trac] #41641: Unit testing reaching the memory limit

[WordPress Trac]

#41641: Unit testing reaching the memory limit
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 Reporter:  Hristo Sg         |       Owner:
     Type:  enhancement       |      Status:  new
 Priority:  normal            |   Milestone:  Future Release
Component:  Build/Test Tools  |     Version:
 Severity:  normal            |  Resolution:
 Keywords:                    |     Focuses:
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Comment (by danielbachhuber):

 > 99% test suite completion == 3.1 GB resident memory

 Interestingly, I can't reproduce this now in calling `phpunit` directly.
 Maybe Blackfire injects some observing code that increases memory usage (I
 can't imagine it's optimized for long-running processes).

 I also tried adding `Imagick::setResourceLimit(
 Imagick::RESOURCETYPE_MEMORY, 100 * 1024 );` to
 `WP_UnitTestCase::setUp()`, but that didn't seem to have an impact.

 TIL the difference between stack and heap memory, and how PHP doesn't have
 great tooling for measuring the latter.

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Ticket URL: <https://core.trac.wordpress.org/ticket/41641#comment:8>
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