feat(client): add project_languages methode

lib/gitlab/client/projects.rb

@@ -3,7 +3,7 @@
 class Gitlab::Client
   # Defines methods related to projects.
   # @see https://docs.gitlab.com/ce/api/projects.html
-  module Projects
+  module Projects # rubocop:disable Metrics/ModuleLength
     # Gets a list of projects owned by the authenticated user.
     #
     # @example
@@ -704,5 +704,16 @@ def delete_project_custom_attribute(key, project_id = nil)
     def project_deploy_tokens(project, options = {})
       get("/projects/#{url_encode project}/deploy_tokens", query: options)
     end
+
+    # Get languages used with percentage value
+    #
+    # @example
+    #   Gitlab.project_languages(42)
+    #
+    # @param [Integer, String] id The ID or path of a project.
+    # @return [Gitlab::ObjectifiedHash]
+    def project_languages(project)
+      get("/projects/#{url_encode project}/languages")
+    end
   end
 end

spec/fixtures/project_languages.json

@@ -0,0 +1 @@
+{"Ruby":99.99,"Shell":0.01}

spec/gitlab/client/projects_spec.rb

@@ -925,4 +925,16 @@
       expect(@custom_attributes.first.username).to eq 'gitlab+deploy-token-93'
     end
   end
+
+  describe '.project_languages' do
+    before do
+      stub_get('/projects/2/languages', 'project_languages')
+      @project_languages = Gitlab.project_languages(2)
+    end
+
+    it 'returns a GitlabHash with language data' do
+      expect(@project_languages).to be_a Gitlab::ObjectifiedHash
+      expect(@project_languages.to_hash.keys).to contain_exactly('Ruby', 'Shell')
+    end
+  end
 end