[DRE-maint] Bug#1006374: graphicsmagick breaks ruby-mini-magick autopkgtest: Failure/Error: expect(subject["EXIF:Flash"]).to eq "0"

[Paul Gevers]

Source: graphicsmagick, ruby-mini-magick
Control: found -1 graphicsmagick/1.4+really1.3.37+hg16662-1
Control: found -1 ruby-mini-magick/4.11.0-1
Severity: serious
Tags: sid bookworm
X-Debbugs-CC: debian-ci at lists.debian.org
User: debian-ci at lists.debian.org
Usertags: breaks needs-update

Dear maintainer(s),

With a recent upload of graphicsmagick the autopkgtest of 
ruby-mini-magick fails in testing when that autopkgtest is run with the 
binary packages of graphicsmagick from unstable. It passes when run with 
only packages from testing. In tabular form:

                        pass            fail
graphicsmagick         from testing    1.4+really1.3.37+hg16662-1
ruby-mini-magick       from testing    4.11.0-1
all others             from testing    from testing

I copied some of the output at the bottom of this report.

Currently this regression is blocking the migration of graphicsmagick to 
testing [1]. Due to the nature of this issue, I filed this bug report 
against both packages. Can you please investigate the situation and 
reassign the bug to the right package?

More information about this bug and the reason for filing it can be found on
https://wiki.debian.org/ContinuousIntegration/RegressionEmailInformation

Paul

[1] https://qa.debian.org/excuses.php?package=graphicsmagick

https://ci.debian.net/data/autopkgtest/testing/amd64/r/ruby-mini-magick/19529839/log.gz


Failures:

   1) With GraphicsMagick MiniMagick::Image#[] reads exif
      Failure/Error: expect(subject["EXIF:Flash"]).to eq "0"

        expected: "0"
             got: ""

        (compared using ==)
      # ./spec/lib/mini_magick/image_spec.rb:365:in `block (5 levels) in 
<top (required)>'

   2) With GraphicsMagick MiniMagick::Image#exif returns a hash of EXIF data
      Failure/Error: expect(subject.exif["DateTimeOriginal"]).to 
be_a(String)
        expected nil to be a kind of String
      # ./spec/lib/mini_magick/image_spec.rb:404:in `block (5 levels) in 
<top (required)>'

   3) With GraphicsMagick MiniMagick::Image#exif decodes the ExifVersion
      Failure/Error: expect(subject.exif["ExifVersion"]).to eq("0220")

        expected: "0220"
             got: nil

        (compared using ==)
      # ./spec/lib/mini_magick/image_spec.rb:409:in `block (5 levels) in 
<top (required)>'

Finished in 7.05 seconds (files took 0.41511 seconds to load)
284 examples, 3 failures, 5 pending

Failed examples:

rspec ./spec/lib/mini_magick/image_spec.rb[2:1:11:3] # With 
GraphicsMagick MiniMagick::Image#[] reads exif
rspec ./spec/lib/mini_magick/image_spec.rb[2:1:16:1] # With 
GraphicsMagick MiniMagick::Image#exif returns a hash of EXIF data
rspec ./spec/lib/mini_magick/image_spec.rb[2:1:16:2] # With 
GraphicsMagick MiniMagick::Image#exif decodes the ExifVersion

/usr/bin/ruby2.7 
-I/usr/share/rubygems-integration/all/gems/rspec-support-3.10.3/lib:/usr/share/rubygems-integration/all/gems/rspec-core-3.10.1/lib 
/usr/share/rubygems-integration/all/gems/rspec-core-3.10.1/exe/rspec 
--pattern ./spec/\*\*/\*_spec.rb --format documentation failed
mv ./.gem2deb.lib lib
autopkgtest [10:17:01]: test gem2deb-test-runner

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