Add success CI Build empty state status

lib/gitlab/ci/status/build/factory.rb

@@ -8,7 +8,8 @@ module Gitlab
               Status::Build::Canceled,
               Status::Build::Created,
               Status::Build::Pending,
-              Status::Build::Skipped],
+              Status::Build::Skipped,
+              Status::Build::Success],
              [Status::Build::Cancelable,
               Status::Build::Retryable],
              [Status::Build::FailedAllowed,

lib/gitlab/ci/status/build/success.rb

+module Gitlab
+  module Ci
+    module Status
+      module Build
+        class Success < Status::Extended
+          def illustration
+            {
+              image: 'illustrations/skipped-job_empty.svg',
+              size: 'svg-430',
+              title: _('Job has been erased')
+            }
+          end
+
+          def self.matches?(build, user)
+            build.success?
+          end
+        end
+      end
+    end
+  end
+end

spec/lib/gitlab/ci/status/build/factory_spec.rb

@@ -36,6 +36,22 @@ describe Gitlab::Ci::Status::Build::Factory do
       expect(status).to have_details
       expect(status).to have_action
     end
+
+    context 'when job log gets erased' do
+      before do
+        build.trace.set(nil)
+      end
+
+      it 'matches correct extended statuses' do
+        expect(factory.extended_statuses)
+          .to eq [Gitlab::Ci::Status::Build::Success,
+                  Gitlab::Ci::Status::Build::Retryable]
+      end
+
+      it 'fabricates a retryable build status' do
+        expect(status).to be_a Gitlab::Ci::Status::Build::Retryable
+      end
+    end
   end
 
   context 'when build is failed' do

spec/lib/gitlab/ci/status/build/success_spec.rb

+require 'spec_helper'
+
+describe Gitlab::Ci::Status::Build::Success do
+  let(:user) { create(:user) }
+
+  subject do
+    described_class.new(double('subject'))
+  end
+
+  describe '#illustration' do
+    it { expect(subject.illustration).to include(:image, :size, :title) }
+  end
+
+  describe '.matches?' do
+    subject {described_class.matches?(build, user) }
+
+    context 'when build succeeded' do
+      let(:build) { create(:ci_build, :success) }
+
+      it 'is a correct match' do
+        expect(subject).to be true
+      end
+    end
+
+    context 'when build did not succeed' do
+      let(:build) { create(:ci_build, :skipped) }
+
+      it 'does not match' do
+        expect(subject).to be false
+      end
+    end
+  end
+end