1 files changed, 42 insertions, 0 deletions
diff --git a/spec/requests/api/graphql/project/pipeline_spec.rb b/spec/requests/api/graphql/project/pipeline_spec.rb
index d46ef313563..73e02e2a4b1 100644
--- a/spec/requests/api/graphql/project/pipeline_spec.rb
+++ b/spec/requests/api/graphql/project/pipeline_spec.rb
@@ -273,6 +273,48 @@ RSpec.describe 'getting pipeline information nested in a project' do
     end
   end
 
+  context 'N+1 queries on pipeline jobs' do
+    let(:pipeline) { create(:ci_pipeline, project: project) }
+
+    let(:fields) do
+      <<~FIELDS
+      jobs {
+        nodes {
+          previousStageJobsAndNeeds {
+            nodes {
+              name
+            }
+          }
+        }
+      }
+      FIELDS
+    end
+
+    it 'does not generate N+1 queries', :request_store, :use_sql_query_cache do
+      build_stage = create(:ci_stage_entity, position: 1, name: 'build', project: project, pipeline: pipeline)
+      test_stage = create(:ci_stage_entity, position: 2, name: 'test', project: project, pipeline: pipeline)
+      create(:ci_build, pipeline: pipeline, stage_idx: build_stage.position, name: 'docker 1 2', stage: build_stage)
+      create(:ci_build, pipeline: pipeline, stage_idx: build_stage.position, name: 'docker 2 2', stage: build_stage)
+      create(:ci_build, pipeline: pipeline, stage_idx: test_stage.position, name: 'rspec 1 2', stage: test_stage)
+      test_job = create(:ci_build, pipeline: pipeline, stage_idx: test_stage.position, name: 'rspec 2 2', stage: test_stage)
+      create(:ci_build_need, build: test_job, name: 'docker 1 2')
+
+      post_graphql(query, current_user: current_user)
+
+      control = ActiveRecord::QueryRecorder.new(skip_cached: false) do
+        post_graphql(query, current_user: current_user)
+      end
+
+      create(:ci_build, name: 'test-a', stage: test_stage, stage_idx: test_stage.position, pipeline: pipeline)
+      test_b_job = create(:ci_build, name: 'test-b', stage: test_stage, stage_idx: test_stage.position, pipeline: pipeline)
+      create(:ci_build_need, build: test_b_job, name: 'docker 2 2')
+
+      expect do
+        post_graphql(query, current_user: current_user)
+      end.not_to exceed_all_query_limit(control)
+    end
+  end
+
   context 'N+1 queries on stages jobs' do
     let(:depth) { 5 }
     let(:fields) do