Merge branch 'fix-merge-request-url-builder' into 'master'

Fix merge request URL passed to Webhooks

If you look at the data structure passed to Webhooks, you will see:

`"url"=>nil`

I don't think any of the Webhooks or services are using this yet, so right now nothing so far depends upon this value being correct.

See merge request !352

CHANGELOG

 Please view this file on the master branch, on stable branches it's out of date.
 
 v 7.9.0 (unreleased)
+  - Fix merge request URL passed to Webhooks. (Stan Hu)
   - Move labels/milestones tabs to sidebar
   - Upgrade Rails gem to version 4.1.9.
   - Improve error messages for file edit failures

lib/gitlab/url_builder.rb

@@ -10,6 +10,8 @@ module Gitlab
       case @type
       when :issue
         issue_url(id)
+      when :merge_request
+        merge_request_url(id)
       end
     end
 
@@ -22,5 +24,12 @@ module Gitlab
                                   project_id: issue.project,
                                   host: Gitlab.config.gitlab['url'])
     end
+
+    def merge_request_url(id)
+      merge_request = MergeRequest.find(id)
+      project_merge_request_url(id: merge_request.id,
+                                project_id: merge_request.project,
+                                host: Gitlab.config.gitlab['url'])
+    end
   end
 end

spec/lib/gitlab/url_builder_spec.rb

@@ -8,4 +8,12 @@ describe Gitlab::UrlBuilder do
       expect(url).to eq "#{Settings.gitlab['url']}/#{issue.project.path_with_namespace}/issues/#{issue.iid}"
     end
   end
+
+  describe 'When asking for an merge request' do
+    it 'returns the merge request url' do
+      merge_request = create(:merge_request)
+      url = Gitlab::UrlBuilder.new(:merge_request).build(merge_request.id)
+      expect(url).to eq "#{Settings.gitlab['url']}/#{merge_request.project.to_param}/merge_requests/#{merge_request.id}"
+    end
+  end
 end