Use merge_request_diff instead of doubles for testing pipelines for Merge Requests

app/views/projects/merge_requests/_show.html.haml

@@ -45,24 +45,24 @@
     - if @commits_count.nonzero?
       %ul.merge-request-tabs.nav-links.no-top.no-bottom
         %li.notes-tab
-          = link_to namespace_project_merge_request_path(@project.namespace, @project, @merge_request), data: {target: 'div#notes', action: 'notes', toggle: 'tab'} do
+          = link_to namespace_project_merge_request_path(@project.namespace, @project, @merge_request), data: { target: 'div#notes', action: 'notes', toggle: 'tab' } do
             Discussion
             %span.badge= @merge_request.mr_and_commit_notes.user.count
         %li.commits-tab
-          = link_to commits_namespace_project_merge_request_path(@project.namespace, @project, @merge_request), data: {target: 'div#commits', action: 'commits', toggle: 'tab'} do
+          = link_to commits_namespace_project_merge_request_path(@project.namespace, @project, @merge_request), data: { target: 'div#commits', action: 'commits', toggle: 'tab' } do
             Commits
             %span.badge= @commits_count
         - if @pipeline
           %li.pipelines-tab
-            = link_to pipelines_namespace_project_merge_request_path(@project.namespace, @project, @merge_request), data: {target: '#pipelines', action: 'pipelines', toggle: 'tab'} do
+            = link_to pipelines_namespace_project_merge_request_path(@project.namespace, @project, @merge_request), data: { target: '#pipelines', action: 'pipelines', toggle: 'tab' } do
               Pipelines
               %span.badge
           %li.builds-tab
-            = link_to builds_namespace_project_merge_request_path(@project.namespace, @project, @merge_request), data: {target: '#builds', action: 'builds', toggle: 'tab'} do
+            = link_to builds_namespace_project_merge_request_path(@project.namespace, @project, @merge_request), data: { target: '#builds', action: 'builds', toggle: 'tab' } do
               Builds
               %span.badge= @statuses.size
         %li.diffs-tab
-          = link_to diffs_namespace_project_merge_request_path(@project.namespace, @project, @merge_request), data: {target: 'div#diffs', action: 'diffs', toggle: 'tab'} do
+          = link_to diffs_namespace_project_merge_request_path(@project.namespace, @project, @merge_request), data: { target: 'div#diffs', action: 'diffs', toggle: 'tab' } do
             Changes
             %span.badge= @merge_request.diff_size
 

spec/features/merge_requests/pipelines_spec.rb

@@ -24,7 +24,7 @@ feature 'Pipelines for Merge Requests', feature: true, js: true do
       visit namespace_project_merge_request_path(project.namespace, project, merge_request)
     end
 
-    scenario 'does click a pipeline tab and sees a list of pipelines' do
+    scenario 'user visits merge request pipelines tab' do
       page.within('.merge-request-tabs') do
         click_link('Pipelines')
       end
@@ -39,7 +39,7 @@ feature 'Pipelines for Merge Requests', feature: true, js: true do
       visit namespace_project_merge_request_path(project.namespace, project, merge_request)
     end
 
-    scenario 'does not find a pipeline link' do
+    scenario 'user visits merge request page' do
       page.within('.merge-request-tabs') do
         expect(page).not_to have_link('Pipelines')
       end

spec/models/merge_request_spec.rb

@@ -425,7 +425,7 @@ describe MergeRequest, models: true do
     let(:commit2) { double('commit2', sha: 'sha3') }
 
     before do
-      allow(subject).to receive(:commits).and_return([commit0, commit1, commit2])
+      allow(subject.merge_request_diff).to receive(:commits).and_return([commit0, commit1, commit2])
     end
 
     it 'returns sha of commits' do
@@ -458,20 +458,15 @@ describe MergeRequest, models: true do
   end
 
   describe '#all_pipelines' do
-    let(:commit0) { double('commit0', sha: 'sha1') }
-    let(:commit1) { double('commit1', sha: 'sha2') }
-    let(:commit2) { double('commit2', sha: 'sha3') }
-    let!(:pipeline) { create(:ci_empty_pipeline, project: subject.source_project, sha: 'sha1', ref: subject.source_branch) }
-    let!(:pipeline2) { create(:ci_empty_pipeline, project: subject.source_project, sha: 'sha1', ref: subject.source_branch) }
-    let!(:pipeline3) { create(:ci_empty_pipeline, project: subject.source_project, sha: 'sha2', ref: subject.source_branch) }
-    let!(:pipeline4) { create(:ci_empty_pipeline, project: subject.target_project, sha: 'sha1', ref: subject.target_branch) }
-
-    before do
-      allow(subject).to receive(:commits).and_return([commit0, commit1, commit2])
+    let!(:pipelines) do
+      subject.merge_request_diff.commits.map do |commit|
+        create(:ci_empty_pipeline, project: subject.source_project, sha: commit.id, ref: subject.source_branch)
+      end
     end
 
-    it 'returns a pipelines from source projects' do
-      expect(subject.all_pipelines).to eq([pipeline3, pipeline2, pipeline])
+    it 'returns a pipelines from source projects with proper ordering' do
+      expect(subject.all_pipelines).not_to be_empty
+      expect(subject.all_pipelines).to eq(pipelines.reverse)
     end
   end