Comments on: Speeding up Paperclip Tests by… a LOT

By: Trevor

Trevor — Fri, 06 Nov 2009 20:21:14 +0000

Cool – thanks for the feedback!

By: Steve Madsen

Steve Madsen — Fri, 06 Nov 2009 14:32:11 +0000

Based on my debugging, it appears so, but I’m also using very small files for these tests. Any additional overhead in save_attached_files is not impacting the test run time, and it is allowing Paperclip to clean up the temporary files it creates.

A slow test is a problem, but failing due to a problem outside my code is worse. :-)

By: Trevor

Trevor — Fri, 06 Nov 2009 05:12:19 +0000

Steve, so you’re saying it’s best to just stub out the “post_process” method? I suppose that would at least save all the time for generating thumbnails…

By: Steve Madsen

Steve Madsen — Fri, 06 Nov 2009 04:37:31 +0000

This technique has worked really well for me for a couple of months now, until tonight. I accumulated enough functional tests with stubbed out Paperclip methods that I hit too many open files and my tests started failing inside Paperclip:

Errno::EMFILE: Too many open files – /var/folders/45/45kdBsmpGF0A-mb8hYDQxU+++TM/-Tmp-/stream.25027.213
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/tempfile.rb:55:in `initialize’
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/tempfile.rb:55:in `open’
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/tempfile.rb:55:in `initialize’
vendor/gems/thoughtbot-paperclip-2.3.1/lib/paperclip/iostream.rb:7:in `new’
vendor/gems/thoughtbot-paperclip-2.3.1/lib/paperclip/iostream.rb:7:in `to_tempfile’
vendor/gems/thoughtbot-paperclip-2.3.1/lib/paperclip/attachment.rb:79:in `assign’
vendor/gems/thoughtbot-paperclip-2.3.1/lib/paperclip.rb:232:in `image=’

The solution seems to be to NOT stub out save_attached_files and delete_attached_files, and it doesn’t impact the run time of the tests, either.

By: Xavius

Xavius — Mon, 24 Aug 2009 16:37:41 +0000

Trevor, would you be able to include another posts with some basics on how to use Test::Unit to create functional tests for controllers associated with paperclip models?

By: Rodney

Rodney — Thu, 07 May 2009 23:16:25 +0000

Thanks for posting that! I don’t know if it’s my version of paperclip, but I have to use :destroy_attached_files, instead.

Photo.any_instance.stubs(:delete_attached_files).returns(true)

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Mon, 16 Mar 2009 17:43:48 +0000

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