Extend pipelines factory with transient config attribute

spec/factories/ci/pipelines.rb

@@ -21,21 +21,16 @@ FactoryGirl.define do
     end
 
     factory :ci_pipeline do
-      after(:build) do |pipeline|
-        allow(pipeline).to receive(:ci_yaml_file) do
-          File.read(Rails.root.join('spec/support/gitlab_stubs/gitlab_ci.yml'))
-        end
-      end
-    end
-
-    factory(:ci_pipeline_with_yaml) do
-      transient { yaml nil }
+      transient { config nil }
 
       after(:build) do |pipeline, evaluator|
-        raise ArgumentError unless evaluator.yaml
-
-        allow(pipeline).to receive(:ci_yaml_file)
-          .and_return(YAML.dump(evaluator.yaml))
+        allow(pipeline).to receive(:ci_yaml_file) do
+          if evaluator.config
+            YAML.dump(evaluator.config)
+          else
+            File.read(Rails.root.join('spec/support/gitlab_stubs/gitlab_ci.yml'))
+          end
+        end
       end
     end
   end

spec/services/ci/process_pipeline_service_spec.rb

@@ -295,7 +295,7 @@ describe Ci::ProcessPipelineService, services: true do
 
     context 'when there are builds that are not created yet' do
       let(:pipeline) do
-        create(:ci_pipeline_with_yaml, yaml: config)
+        create(:ci_pipeline, config: config)
       end
 
       let(:config) do