Add spec for YamlProcessor

spec/lib/gitlab/ci/yaml_processor_spec.rb

@@ -121,6 +121,21 @@ module Gitlab
             end
           end
         end
+
+        describe 'delayed job entry' do
+          context 'when delayed is defined' do
+            let(:config) do
+              YAML.dump(rspec: { script: 'rollout 10%',
+                                 when: 'delayed',
+                                 start_in: '1 day' })
+            end
+
+            it 'has the attributes' do
+              expect(subject[:when]).to eq 'delayed'
+              expect(subject[:options][:start_in]).to eq '1 day'
+            end
+          end
+        end
       end
 
       describe '#stages_attributes' do
@@ -1260,7 +1275,7 @@ module Gitlab
           config = YAML.dump({ rspec: { script: "test", when: 1 } })
           expect do
             Gitlab::Ci::YamlProcessor.new(config)
-          end.to raise_error(Gitlab::Ci::YamlProcessor::ValidationError, "jobs:rspec when should be on_success, on_failure, always or manual")
+          end.to raise_error(Gitlab::Ci::YamlProcessor::ValidationError, "jobs:rspec when should be on_success, on_failure, always, manual or delayed")
         end
 
         it "returns errors if job artifacts:name is not an a string" do