Merge branch 'cs-warn-on-failure' into 'master'

Warn on failure

## What does this MR do?

Adds styling and HTML for a `success_with_warnings` status in the MR widget. Unfinished as it needs some plumbing in the relevant CI controllers and models.

## Are there points in the code the reviewer needs to double check?

Not at the moment, though I think I'll probably need help getting this to work in the backend.

## What are the relevant issue numbers?

#17669 

## Screenshots (if relevant)

![Screen_Shot_2016-06-29_at_12.02.49_PM](/uploads/af4a915689633fe028f44bb34ae7a5b1/Screen_Shot_2016-06-29_at_12.02.49_PM.png)

## Does this MR meet the acceptance criteria?

- [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [ ] Added for this feature/bug
  - [ ] All builds are passing
- [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [ ] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

cc: @ayufan 

See merge request !5004

CHANGELOG

@@ -27,6 +27,7 @@ v 8.10.0 (unreleased)
   - Store when and yaml variables in builds table
   - Display last commit of deleted branch in push events !4699 (winniehell)
   - Escape file extension when parsing search results !5141 (winniehell)
+  - Add "passing with warnings" to the merge request pipeline possible statuses, this happens when builds that allow failures have failed. !5004
   - Apply the trusted_proxies config to the rack request object for use with rack_attack
   - Upgrade to Rails 4.2.7. !5236
   - Extend exposed environment variables for CI builds

app/assets/javascripts/merge_request_widget.js.coffee

@@ -55,8 +55,11 @@ class @MergeRequestWidget
       $('.mr-state-widget').replaceWith(data)
 
   ciLabelForStatus: (status) ->
-    if status is 'success'
+    switch status
+      when 'success'
         'passed'
+      when 'success_with_warnings'
+        'passed with warnings'
       else
         status
 
@@ -116,7 +119,7 @@ class @MergeRequestWidget
   showCIStatus: (state) ->
     return if not state?
     $('.ci_widget').hide()
-    allowed_states = ["failed", "canceled", "running", "pending", "success", "skipped", "not_found"]
+    allowed_states = ["failed", "canceled", "running", "pending", "success", "success_with_warnings", "skipped", "not_found"]
     if state in allowed_states
       $('.ci_widget.ci-' + state).show()
       switch state
@@ -124,7 +127,7 @@ class @MergeRequestWidget
           @setMergeButtonClass('btn-danger')
         when "running"
           @setMergeButtonClass('btn-warning')
-        when "success"
+        when "success", "success_with_warnings"
           @setMergeButtonClass('btn-create')
     else
       $('.ci_widget.ci-error').show()

app/assets/stylesheets/pages/merge_requests.scss

@@ -70,6 +70,14 @@
       color: $gl-success;
     }
 
+    &.ci-success_with_warnings {
+      color: $gl-success;
+
+      i {
+        color: $gl-warning;
+      }
+    }
+
     &.ci-skipped {
       background-color: #eee;
       color: #888;

app/assets/stylesheets/pages/status.scss

@@ -15,7 +15,8 @@
       border-color: $gl-danger;
     }
 
-    &.ci-success {
+    &.ci-success,
+    &.ci-success_with_warnings {
       color: $gl-success;
       border-color: $gl-success;
     }
@@ -57,9 +58,12 @@
   .ci-status-icon-failed {
     color: $gl-danger;
   }
-  .ci-status-icon-pending {
+
+  .ci-status-icon-pending,
+  .ci-status-icon-success_with_warning {
     color: $gl-warning;
   }
+  
   .ci-status-icon-running {
     color: $blue-normal;
   }

app/controllers/projects/merge_requests_controller.rb

@@ -286,6 +286,8 @@ class Projects::MergeRequestsController < Projects::ApplicationController
       status = pipeline.status
       coverage = pipeline.try(:coverage)
 
+      status = "success_with_warnings" if pipeline.success? && pipeline.has_warnings?
+
       status ||= "preparing"
     else
       ci_service = @merge_request.source_project.ci_service

app/helpers/ci_status_helper.rb

@@ -15,8 +15,11 @@ module CiStatusHelper
   end
 
   def ci_label_for_status(status)
-    if status == 'success'
+    case status
+    when 'success'
       'passed'
+    when 'success_with_warnings'
+      'passed with warnings'
     else
       status
     end

app/models/ci/pipeline.rb

@@ -146,6 +146,10 @@ module Ci
       end
     end
 
+    def has_warnings?
+      builds.latest.ignored.any?
+    end
+
     def config_processor
       return nil unless ci_yaml_file
       return @config_processor if defined?(@config_processor)

app/views/projects/merge_requests/widget/_heading.html.haml

 - if @pipeline
   .mr-widget-heading
-    - %w[success skipped canceled failed running pending].each do |status|
+    - %w[success success_with_warnings skipped canceled failed running pending].each do |status|
       .ci_widget{ class: "ci-#{status}", style: ("display:none" unless @pipeline.status == status) }
         = ci_icon_for_status(status)
         %span

spec/models/ci/pipeline_spec.rb

@@ -504,4 +504,42 @@ describe Ci::Pipeline, models: true do
       end
     end
   end
+
+  describe '#has_warnings?' do
+    subject { pipeline.has_warnings? }
+
+    context 'build which is allowed to fail fails' do
+      before do
+        create :ci_build, :success, pipeline: pipeline, name: 'rspec'
+        create :ci_build, :allowed_to_fail, :failed, pipeline: pipeline, name: 'rubocop'
+      end
+      
+      it 'returns true' do
+        is_expected.to be_truthy
+      end
+    end
+
+    context 'build which is allowed to fail succeeds' do
+      before do
+        create :ci_build, :success, pipeline: pipeline, name: 'rspec'
+        create :ci_build, :allowed_to_fail, :success, pipeline: pipeline, name: 'rubocop'
+      end
+      
+      it 'returns false' do
+        is_expected.to be_falsey
+      end
+    end
+
+    context 'build is retried and succeeds' do
+      before do
+        create :ci_build, :success, pipeline: pipeline, name: 'rubocop'
+        create :ci_build, :failed, pipeline: pipeline, name: 'rspec'
+        create :ci_build, :success, pipeline: pipeline, name: 'rspec'
+      end
+
+      it 'returns false' do
+        is_expected.to be_falsey
+      end
+    end
+  end
 end