Show test coverage results in MR if available

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/assets/javascripts/merge_request.js.coffee

@@ -40,6 +40,8 @@ class MergeRequest
     if @opts.ci_enable
       $.get @opts.url_to_ci_check, (data) =>
         this.showCiState data.status
+        if data.coverage
+          this.showCiCoverage data.coverage
       , 'json'
 
   bindEvents: ->
@@ -102,7 +104,11 @@ class MergeRequest
       when "running", "pending"
         $('.mr-state-widget').addClass("panel-warning")
 
-
+  showCiCoverage: (coverage) ->
+    cov_html = $('<span>')
+    cov_html.addClass('ci-coverage')
+    cov_html.text('Coverage ' + coverage + '%')
+    $('.ci_widget:visible').append(cov_html)
 
   loadDiff: (event) ->
     $.ajax

app/assets/stylesheets/sections/merge_requests.scss

@@ -113,6 +113,10 @@
       margin-bottom: 0;
     }
   }
+
+  .ci-coverage {
+    float: right;
+  }
 }
 
 .merge-request-show-labels .label {

app/controllers/projects/merge_requests_controller.rb

@@ -150,8 +150,17 @@ class Projects::MergeRequestsController < Projects::ApplicationController
   end
 
   def ci_status
-    status = @merge_request.source_project.ci_service.commit_status(merge_request.last_commit.sha)
-    response = {status: status}
+    ci_service = @merge_request.source_project.ci_service
+    status = ci_service.commit_status(merge_request.last_commit.sha)
+
+    if ci_service.respond_to?(:commit_coverage)
+      coverage = ci_service.commit_coverage(merge_request.last_commit.sha)
+    end
+
+    response = {
+      status: status,
+      coverage: coverage
+    }
 
     render json: response
   end

app/models/project_services/gitlab_ci_service.rb

@@ -31,8 +31,13 @@ class GitlabCiService < CiService
     project_url + "/builds/#{sha}/status.json?token=#{token}"
   end
 
-  def commit_status sha
-    response = HTTParty.get(commit_status_path(sha), verify: false)
+  def get_ci_build(sha)
+    @ci_builds ||= {}
+    @ci_builds[sha] ||= HTTParty.get(commit_status_path(sha), verify: false)
+  end
+
+  def commit_status(sha)
+    response = get_ci_build(sha)
 
     if response.code == 200 and response["status"]
       response["status"]
@@ -41,6 +46,14 @@ class GitlabCiService < CiService
     end
   end
 
+  def commit_coverage(sha)
+    response = get_ci_build(sha)
+
+    if response.code == 200 and response["coverage"]
+      response["coverage"]
+    end
+  end
+
   def build_page sha
     project_url + "/builds/#{sha}"
   end