Fix emails on push service when a single commit is pushed

This fixes issue #161.

CHANGELOG

@@ -15,6 +15,7 @@ v 6.8.0
   - Option to disable standard login
   - Clean old created archives from repository downloads directory
   - Fix download link for huge MR diffs
+  - Fix emails on push service when only one commit is pushed
 v 6.7.3
   - Fix the merge notification email not being sent (Pierre de La Morinerie)

app/mailers/emails/projects.rb

@@ -26,7 +26,7 @@ module Emails
       if @commits.length > 1
         @target_url = project_compare_url(@project, from: @commits.first, to: @commits.last)
       else
-        @target_url = project_commit_url(@project, @compare.commit)
+        @target_url = project_commit_url(@project, @commits.first)
       end
       mail(from: sender(author_id),

spec/mailers/notify_spec.rb

@@ -502,7 +502,7 @@ describe Notify do
     end
   end
-  describe 'email on push' do
+  describe 'email on push with multiple commits' do
     let(:example_site_path) { root_path }
     let(:user) { create(:user) }
     let(:compare) { Gitlab::Git::Compare.new(project.repository.raw_repository, 'cd5c4bac', 'b1e6a9db') }
@@ -537,4 +537,40 @@ describe Notify do
       should have_body_text /#{diff_path}/
     end
   end
+
+  describe 'email on push with a single commit' do
+    let(:example_site_path) { root_path }
+    let(:user) { create(:user) }
+    let(:compare) { Gitlab::Git::Compare.new(project.repository.raw_repository, '8716fc78', 'b1e6a9db') }
+    let(:commits) { Commit.decorate(compare.commits) }
+    let(:diff_path) { project_commit_path(project, commits.first) }
+
+    subject { Notify.repository_push_email(project.id, 'devs@company.name', user.id, 'master', compare) }
+
+    it 'is sent as the author' do
+      sender = subject.header[:from].addrs[0]
+      sender.display_name.should eq(user.name)
+      sender.address.should eq(gitlab_sender)
+    end
+
+    it 'is sent to recipient' do
+      should deliver_to 'devs@company.name'
+    end
+
+    it 'has the correct subject' do
+      should have_subject /New push to repository/
+    end
+
+    it 'includes commits list' do
+      should have_body_text /tree css fixes/
+    end
+
+    it 'includes diffs' do
+      should have_body_text /Checkout wiki pages for installation information/
+    end
+
+    it 'contains a link to the diff' do
+      should have_body_text /#{diff_path}/
+    end
+  end
 end