(RK-135) Improve error message when no published mod versions exist

CHANGELOG.mkd

@@ -3,6 +3,7 @@ CHANGELOG
 
 Unreleased
 
+- Attempting to download the latest version for a module that has no Forge releases will now issue a meaningful error.
 - Added an interface to R10K::Source::Base named `reload!` for updating the environments list for a given deployment; `reload!` is called before deployment purges to make r10k deploy pools more threadsafe. [#1172](https://github.com/puppetlabs/r10k/pull/1172)
 ----------
 

integration/tests/user_scenario/basic_workflow/negative/neg_specify_deleted_forge_module.rb

@@ -10,7 +10,7 @@
 r10k_fqp = get_r10k_fqp(master)
 
 #Verification
-error_notification_regex = /Does 'puppetlabs-regret' have at least one published release?/
+error_notification_regex = /The module puppetlabs-regret does not appear to have any published releases/
 
 #File
 puppet_file = <<-PUPPETFILE
@@ -40,12 +40,6 @@
 
 #Tests
 step "Deploy production environment via r10k with specified module deleted"
-on(master, "#{r10k_fqp} deploy environment -p -v", :acceptable_exit_codes => 1) do |result|
-  if get_puppet_version(master) < 4.0
-    assert_match(error_notification_regex, result.stderr, 'Unexpected error was detected!')
-  else
-    expect_failure('expected to fail due to RK-135') do
-      assert_match(error_notification_regex, result.stderr, 'Unexpected error was detected!')
-    end
-  end
+on(master, "#{r10k_fqp} deploy environment -p -v --trace", :acceptable_exit_codes => 1) do |result|
+  assert_match(error_notification_regex, result.stderr, 'Unexpected error was detected!')
 end

lib/r10k/module/forge.rb

@@ -83,7 +83,11 @@ def properties
   def expected_version
     if @expected_version == :latest
       begin
-        @expected_version = @v3_module.current_release.version
+        if @v3_module.current_release
+          @expected_version = @v3_module.current_release.version
+        else
+          raise PuppetForge::ReleaseNotFound, _("The module %{title} does not appear to have any published releases, cannot determine latest version.") % { title: @title }
+        end
       rescue Faraday::ResourceNotFound => e
         raise PuppetForge::ReleaseNotFound, _("The module %{title} does not exist on %{url}.") % {title: @title, url: PuppetForge::V3::Release.conn.url_prefix}, e.backtrace
       end

spec/unit/module/forge_spec.rb

@@ -104,9 +104,16 @@
 
     it "uses the latest version from the forge when the version is :latest" do
       subject = described_class.new('branan/eight_hundred', fixture_modulepath, { version: :latest })
-      expect(subject.v3_module).to receive_message_chain(:current_release, :version).and_return('8.8.8')
+      release = double("Module Release", version: '8.8.8')
+      expect(subject.v3_module).to receive(:current_release).and_return(release).twice
       expect(subject.expected_version).to eq '8.8.8'
     end
+
+    it "throws when there are no available versions" do
+      subject = described_class.new('branan/eight_hundred', fixture_modulepath, { version: :latest })
+      expect(subject.v3_module).to receive(:current_release).and_return(nil)
+      expect { subject.expected_version }.to raise_error(PuppetForge::ReleaseNotFound)
+    end
   end
 
   describe "determining the status" do