I'm speccing a small lib which manipulates image files using mini_magick.
The lib creates various temporary files during the process, the lib then cleans
up the temporary files at the end.
I'm trying to mock expectations that the calls are made to File#delete
Eg...
File.should_receive(:delete).once.with("#{generator.tmp_path}-full\.png")
File.should_receive(:delete).once.with("#{generator.tmp_path}-screen\.png")
File.should_receive(:delete).once.with("#{generator.tmp_path}-shadow\.png")
The method in the lib that does this is:
Class IconGenerator
...
private
def cleanup
# remove temporary files created during
# image manipulation
['-full','_screen','_shadow','_back_shadow'].each do |f|
File.delete "#{tmp_path}#{f}.png" if File.exists? "#{tmp_path}#{f}.png"
end
end
...
end
The expectations work fine, however, I also have an after block which also
calls File.delete to clean up the final version of the manipulated test image
after(:each) do
# cleanup manipulated image
File.delete out_dir.join('MenuIcon.png') if File.exists?
out_dir.join('MenuIcon.png')
end
The File.delete call in the after block fails because its calling the mocked
version of File.delete
This results in the following error:
Failure/Error: File.delete out_dir.join('MenuIcon.png') if File.exists?
out_dir.join('MenuIcon.png')
NoMethodError:
undefined method `=~' for
#<Pathname:/Users/robaldred/Sites/egg/tmp/MenuIcon.png>
My next step was to stub the write method for every instance of
MiniMagick::Image
However I will then no longer be able to test the cleanup because the delete
method will never be called if the files don't exist.
I'm pretty sure I'm going about this the wrong way and making it difficult for
myself here.
Appreciate any help & feedback
Thanks
--
Rob
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