Remove reduntant method for building pipeline builds

app/models/ci/pipeline.rb

@@ -91,15 +91,14 @@ module Ci
       trigger_requests.any?
     end
 
-    def build_builds(user, trigger_request = nil)
+    def create_builds(user, trigger_request = nil)
+      ##
+      # We persist pipeline only if there are builds available
+      #
       return unless config_processor
 
       build_builds_for_stages(config_processor.stages, user,
-                              'success', trigger_request)
-    end
-
-    def create_builds(user, trigger_request = nil)
-      build_builds(user, trigger_request) && save
+                              'success', trigger_request) && save
     end
 
     def create_next_builds(build)
@@ -121,7 +120,6 @@ module Ci
       # and save pipeline if we have builds
       build_builds_for_stages(next_stages, build.user, prior_status,
                               build.trigger_request) && save
-
     end
 
     def retried

app/services/ci/create_builds_service.rb

@@ -22,7 +22,8 @@ module Ci
 
       # don't create the same build twice
       builds_attrs.reject! do |build_attrs|
-        @pipeline.builds.find_by(ref: @pipeline.ref, tag: @pipeline.tag,
+        @pipeline.builds.find_by(ref: @pipeline.ref,
+                                 tag: @pipeline.tag,
                                  trigger_request: trigger_request,
                                  name: build_attrs[:name])
       end

app/services/create_commit_builds_service.rb

@@ -42,7 +42,7 @@ class CreateCommitBuildsService
     ##
     # Skip creating pipeline object if there are no builds for it.
     #
-    unless @pipeline.build_builds(user)
+    unless @pipeline.create_builds(user)
       @pipeline.errors.add(:base, 'No builds created')
       return false
     end

spec/models/ci/pipeline_spec.rb

@@ -260,12 +260,15 @@ describe Ci::Pipeline, models: true do
     end
 
     context 'when no builds created' do
+      let(:pipeline) { build(:ci_pipeline) }
+
       before do
         stub_ci_pipeline_yaml_file(YAML.dump(before_script: ['ls']))
       end
 
       it 'returns false' do
         expect(pipeline.create_builds(nil)).to be_falsey
+        expect(pipeline).not_to be_persisted
       end
     end
   end

spec/services/create_commit_builds_service_spec.rb

@@ -184,6 +184,7 @@ describe CreateCommitBuildsService, services: true do
                                  before: '00000000',
                                  after: '31das312',
                                  commits: [{ message: 'some msg' }])
+
         expect(result).to be_falsey
         expect(Ci::Build.all).to be_empty
         expect(Ci::Pipeline.count).to eq(0)