Wrap updating of cache after pipeline transition in class method

app/models/ci/pipeline.rb

@@ -393,7 +393,7 @@ module Ci
     end
 
     def refresh_project_build_status_cache
-      Gitlab::Cache::Ci::ProjectBuildStatus.new(project, sha: sha, status: status).store_in_cache_if_needed
+      Gitlab::Cache::Ci::ProjectBuildStatus.update_for_pipeline(self)
     end
 
     private

lib/gitlab/cache/ci/project_build_status.rb

@@ -15,6 +15,10 @@ module Gitlab
           end
         end
 
+        def self.update_for_pipeline(pipeline)
+          new(pipeline.project, sha: pipeline.sha, status: pipeline.status).store_in_cache_if_needed
+        end
+
         def initialize(project, sha: nil, status: nil)
           @project = project
           @sha = sha

spec/lib/gitlab/cache/ci/project_build_status_spec.rb

@@ -12,6 +12,20 @@ describe Gitlab::Cache::Ci::ProjectBuildStatus do
     end
   end
 
+  describe '.update_for_pipeline' do
+    it 'refreshes the cache if nescessary' do
+      pipeline = build_stubbed(:ci_pipeline, sha: '123456', status: 'success')
+      fake_status = double
+      expect(described_class).to receive(:new).
+                                   with(pipeline.project, sha: '123456', status: 'success').
+                                   and_return(fake_status)
+
+      expect(fake_status).to receive(:store_in_cache_if_needed)
+
+      described_class.update_for_pipeline(pipeline)
+    end
+  end
+
   describe '#has_status?' do
     it "is false when the status wasn't loaded yet" do
       expect(pipeline_status.has_status?).to be_falsy

spec/models/ci/pipeline_spec.rb

@@ -1083,12 +1083,8 @@ describe Ci::Pipeline, models: true do
     let(:pipeline) { create(:ci_pipeline, sha: '123456') }
 
     it 'updates the cached status' do
-      fake_status = double
-      expect(Gitlab::Cache::Ci::ProjectBuildStatus).to receive(:new).
-                                                         with(pipeline.project, sha: '123456', status: 'manual').
-                                                         and_return(fake_status)
-
-      expect(fake_status).to receive(:store_in_cache_if_needed)
+      expect(Gitlab::Cache::Ci::ProjectBuildStatus).to receive(:update_for_pipeline).
+                                                         with(pipeline)
 
       pipeline.block
     end