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fpm/spec/conversion/gem_to_deb.rb
Jordan Sissel 541550a74d Allow versions in Provides field for Debian packages
This fixes #1788. This also reverts #280. For #280, at the time, this
change to ignore versions was correct. Two years after #280, Debian
began allowing `Provides` field to have versions.

This change also fixes bug in gem-to-deb conversion where previously an
incorrect Provides syntax would be generated (but thanks to #280,
removed), so this bug was only noticed after #280 was undone!

Computers are hard sometimes.

Added tests for gem-to-deb conversion specifically for the Provides
field.

Tested manually with Docker on Ubuntu 14.04 and 18.04 and results meet
expectations.

The history here is follows:
* In 2012, fpm was patched to remove version specifiers in Provides
  field because Debian didn't support it.
* In 2014, Debian dpkg[1] added support for versions in Provides field
* Somewhere between 2015-2018, Debian and Ubuntu included this new
  version of dpkg.
* Debian packaging policy docs (v4.4.0) was updated to allow versions
  in the Provides field.

Expected impacts:
* Older versions of dpkg/etc should _ignore_ the presence of a version
  specifier. Testing on Ubuntu 14.04 confirmed this.
* Newer versions of dpkg/etc should respect the presence of a version
  specifier. Testing on Ubuntu 18.04 confirmed this.

[1] https://launchpad.net/debian/+source/dpkg/1.17.11
2021-07-06 14:25:06 -07:00

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1.0 KiB
Ruby

require "spec_setup"
require "fpm/command" # local
require "fpm/package/deb" # local
require "fpm/package/gem" # local
require "stud/temporary"
describe "-s gem -t deb" do
# dpkg-deb lets us query deb package files.
# Comes with debian and ubuntu systems.
have_dpkg_deb = program_exists?("dpkg-deb")
if !have_dpkg_deb
Cabin::Channel.get("rspec") \
.warn("Skipping some deb tests because 'dpkg-deb' isn't in your PATH")
end
let(:fpm) { FPM::Command.new("fpm") }
let(:target) { Stud::Temporary.pathname + ".deb" }
after do
File.unlink(target) if File.exist?(target)
end
before do
insist { fpm.run(["-s", "gem", "-t", "deb", "-p", target, "rails"]) } == 0
end
it "should have a correctly formatted Provides field" do
deb = FPM::Package::Deb.new
deb.input(target)
# Converting gem->deb should format the deb Provides field as "rubygem-rails (= version)"
insist { deb.provides.first } =~ /^rubygem-rails \(= \d+\.\d+\.\d+\)$/
end
end # describe "-s gem -t deb"