Build failures summary page for pipelines

app/assets/javascripts/dispatcher.js

@@ -232,6 +232,7 @@ const ShortcutsBlob = require('./shortcuts_blob');
           }
           break;
         case 'projects:pipelines:builds':
+        case 'projects:pipelines:failures':
         case 'projects:pipelines:show':
           const { controllerAction } = document.querySelector('.js-pipeline-container').dataset;
           const pipelineStatusUrl = `${document.querySelector('.js-pipeline-tab-link a').getAttribute('href')}/status.json`;

app/assets/stylesheets/pages/pipelines.scss

@@ -316,6 +316,32 @@
   }
 }
 
+.build-failures {
+  .build-state {
+    padding: 20px 2px;
+
+    .build-name {
+      float: right;
+      font-weight: 500;
+    }
+
+    .ci-status-icon-failed svg {
+      vertical-align: middle;
+    }
+
+    .stage {
+      color: $gl-text-color-secondary;
+      font-weight: 500;
+      vertical-align: middle;
+    }
+  }
+
+  .build-log {
+    border: none;
+    line-height: initial;
+  }
+}
+
 // Pipeline graph
 .pipeline-graph {
   width: 100%;

app/controllers/projects/pipelines_controller.rb

 class Projects::PipelinesController < Projects::ApplicationController
   before_action :pipeline, except: [:index, :new, :create, :charts]
-  before_action :commit, only: [:show, :builds]
+  before_action :commit, only: [:show, :builds, :failures]
   before_action :authorize_read_pipeline!
   before_action :authorize_create_pipeline!, only: [:new, :create]
   before_action :authorize_update_pipeline!, only: [:retry, :cancel]
@@ -67,11 +67,11 @@ class Projects::PipelinesController < Projects::ApplicationController
   end
 
   def builds
-    respond_to do |format|
-      format.html do
-        render 'show'
-      end
+    render_show
   end
+
+  def failures
+    render_show
   end
 
   def status
@@ -111,6 +111,14 @@ class Projects::PipelinesController < Projects::ApplicationController
 
   private
 
+  def render_show
+    respond_to do |format|
+      format.html do
+        render 'show'
+      end
+    end
+  end
+
   def create_params
     params.require(:pipeline).permit(:ref)
   end

app/helpers/builds_helper.rb

 module BuildsHelper
+  def build_summary(build)
+    if build.has_trace?
+      build.trace.html(last_lines: 10).html_safe
+    else
+      "No job trace"
+    end
+  end
+
   def sidebar_build_class(build, current_build)
     build_class = ''
     build_class += ' active' if build.id === current_build.id

app/views/projects/pipelines/_with_tabs.html.haml

@@ -7,8 +7,10 @@
       = link_to builds_namespace_project_pipeline_path(@project.namespace, @project, @pipeline), data: {target: 'div#js-tab-builds', action: 'builds', toggle: 'tab' }, class: 'builds-tab' do
         Jobs
         %span.badge.js-builds-counter= pipeline.statuses.count
-
-
+    %li.js-failures-tab-link
+      = link_to failures_namespace_project_pipeline_path(@project.namespace, @project, @pipeline), data: {target: 'div#js-tab-failures', action: 'failures', toggle: 'tab' }, class: 'failures-tab' do
+        Failures
+        %span.badge.js-failures-counter= pipeline.statuses.latest.failed.count
 
 .tab-content
   #js-tab-pipeline.tab-pane
@@ -39,3 +41,13 @@
             %th Coverage
             %th
         = render partial: "projects/stage/stage", collection: pipeline.stages, as: :stage
+  #js-tab-failures.build-failures.tab-pane
+    - failed = @pipeline.statuses.latest.failed
+    - failed.each do |build|
+      .build-state
+        %span.ci-status-icon-failed= custom_icon('icon_status_failed')
+        %span.stage
+          = build.stage.titleize
+        %span.build-name
+          = render "notify/links/#{build.to_partial_path}", pipeline: @pipeline, build: build
+      %pre.build-log= build_summary(build)

changelogs/unreleased/24883-build-failure-summary-page.yml

+---
+title: Added build failures summary page for pipelines
+merge_request: 10719
+author:

config/routes/project.rb

@@ -155,6 +155,7 @@ constraints(ProjectUrlConstrainer.new) do
           post :cancel
           post :retry
           get :builds
+          get :failures
           get :status
         end
       end

spec/features/projects/pipelines/pipeline_spec.rb

@@ -254,4 +254,42 @@ describe 'Pipeline', :feature, :js do
       it { expect(build_manual.reload).to be_pending }
     end
   end
+
+  describe 'GET /:project/pipelines/:id/failures' do
+    let(:project) { create(:project) }
+    let(:pipeline) { create(:ci_pipeline, project: project, ref: 'master', sha: project.commit.id) }
+    let(:pipeline_failures_page) { failures_namespace_project_pipeline_path(project.namespace, project, pipeline) }
+    let!(:failed_build) { create(:ci_build, :failed, pipeline: pipeline) }
+
+    context 'with failed build' do
+      before do
+        failed_build.trace.set('4 examples, 1 failure')
+
+        visit pipeline_failures_page
+      end
+
+      it 'shows jobs tab pane as active' do
+        expect(page).to have_css('#js-tab-failures.active')
+      end
+
+      it 'lists failed builds' do
+        expect(page).to have_content(failed_build.name)
+        expect(page).to have_content(failed_build.stage)
+      end
+
+      it 'shows build failure logs' do
+        expect(page).to have_content('4 examples, 1 failure')
+      end
+    end
+
+    context 'when missing build logs' do
+      before do
+        visit pipeline_failures_page
+      end
+
+      it 'includes failed jobs' do
+        expect(page).to have_content('No job trace')
+      end
+    end
+  end
 end