RakeTasks: refactor latest_release_for

lib/travis/build/rake_tasks.rb

@@ -58,32 +58,9 @@ def fetch_githubusercontent_file(from, host: 'raw.githubusercontent.com',
       end
 
       def latest_release_for(repo)
-        conn = build_faraday_conn(host: 'api.github.com')
-
-        response = conn.get do |req|
-          releases_url = "repos/#{repo}/releases"
-          logger.info "Fetching releases from #{conn.url_prefix}#{releases_url}"
-          req.url releases_url
-          oauth_token = ENV.fetch(
-            'GITHUB_OAUTH_TOKEN', ENV.fetch('no_scope_token', 'notset')
-          )
-          if oauth_token && !oauth_token.empty? && oauth_token != 'notset'
-            logger.info(
-              "Adding 'Authorization' header for api.github.com request"
-            )
-            req.headers['Authorization'] = "token #{oauth_token}"
-          end
-        end
-
-        raise "Could not find releases for #{repo}" unless response.success?
-
-        json_data = JSON.parse(response.body)
-        raise "No releases found for #{repo}" if json_data.empty?
-
-        json_data.sort! do |a, b|
-          semver_cmp(a['tag_name'].sub(/^v/, ''), b['tag_name'].sub(/^v/, ''))
-        end
-        json_data.last['tag_name']
+        octokit.latest_release(repo)['tag_name']
+      rescue
+        raise "Could not get latest release for #{repo}"
       end
 
       def file_update_sc_data

spec/build/rake_tasks_spec.rb

@@ -11,29 +11,8 @@ def tmp_top
 describe Travis::Build::RakeTasks do
   subject { described_class }
 
-  def releases_response(*versions)
-    [
-      200,
-      { 'Content-Type' => 'application/json' },
-      JSON.dump(
-        versions.map { |v| { 'tag_name' => v } }
-      )
-    ]
-  end
-
   let :request_stubs do
     Faraday::Adapter::Test::Stubs.new do |stub|
-      %w[
-        creationix/nvm
-        tmate-io/tmate
-        tools/godep
-        travis-ci/gimme
-      ].each do |repo_slug|
-        stub.get("/repos/#{repo_slug}/releases") do |*|
-          releases_response('v1.2.3', 'v1.2.5')
-        end
-      end
-
       [
         ['tmate-io/tmate', 'tmate-v1.2.5-static-linux-amd64.tar.xz'],
         ['tools/godep', 'godep_darwin_amd64'],
@@ -168,27 +147,36 @@ def releases_response(*versions)
     expect(ghc_versions).to_not be_exist
   end
 
-  %w[
-    public/files/casher
-    public/files/gimme
-    public/files/godep_darwin_amd64
-    public/files/godep_linux_amd64
-    public/files/nvm.sh
-    public/files/rustup-init.sh
-    public/files/sbt
-    public/files/sc-linux.tar.gz
-    public/files/sc-osx.zip
-    public/files/tmate-static-linux-amd64.tar.xz
-    public/version-aliases/ghc.json
-  ].each do |filename|
-    it "can fetch #{filename}" do
-      %w[
-        tmp/ghc-versions.html
-      ].each { |t| Rake::Task[t].reenable }
+  context 'fetch files' do
+    let(:uri_template) { Addressable::Template.new 'https://api.github.com/repos/{owner}/{repo}/releases/latest' }
+
+    %w[
+      public/files/casher
+      public/files/gimme
+      public/files/godep_darwin_amd64
+      public/files/godep_linux_amd64
+      public/files/nvm.sh
+      public/files/rustup-init.sh
+      public/files/sbt
+      public/files/sc-linux.tar.gz
+      public/files/sc-osx.zip
+      public/files/tmate-static-linux-amd64.tar.xz
+      public/version-aliases/ghc.json
+    ].each do |filename|
+      before do
+        stub_request(:get, uri_template)
+          .to_return(headers: { content_type: 'application/json' }, body: '{"tag_name": "v1.2.5"}')
+      end
 
-      Rake::Task[filename].reenable
-      Rake::Task[filename].invoke
-      expect(tmp_top + filename).to be_exist
+      it "can fetch #{filename}" do
+        %w[
+          tmp/ghc-versions.html
+        ].each { |t| Rake::Task[t].reenable }
+
+        Rake::Task[filename].reenable
+        Rake::Task[filename].invoke
+        expect(tmp_top + filename).to be_exist
+      end
     end
   end