Merge branch…

app/services/ci/create_pipeline_service.rb

@@ -15,7 +15,7 @@ module Ci
         pipeline_schedule: schedule
       )
 
-      result = validate(current_user || trigger_request.trigger.owner,
+      result = validate(current_user,
                         ignore_skip_ci: ignore_skip_ci,
                         save_on_errors: save_on_errors)
 

changelogs/unreleased/fix-sm-37040-regression-pipeline-trigger-via-api-fails-with-500-internal-server-error-in-9-5-1.yml

+---
+title: Fix pipeline trigger via API fails with 500 Internal Server Error in 9.5
+merge_request:
+author:
+type: fixed

spec/requests/api/triggers_spec.rb

@@ -84,6 +84,22 @@ describe API::Triggers do
           expect(pipeline.variables.map { |v| { v.key => v.value } }.last).to eq(variables)
         end
       end
+
+      context 'when legacy trigger' do
+        before do
+          trigger.update(owner: nil)
+        end
+
+        it 'creates pipeline' do
+          post api("/projects/#{project.id}/trigger/pipeline"), options.merge(ref: 'master')
+
+          expect(response).to have_http_status(201)
+          expect(json_response).to include('id' => pipeline.id)
+          pipeline.builds.reload
+          expect(pipeline.builds.pending.size).to eq(2)
+          expect(pipeline.builds.size).to eq(5)
+        end
+      end
     end
 
     context 'when triggering a pipeline from a trigger token' do

spec/services/ci/create_pipeline_service_spec.rb

@@ -413,14 +413,12 @@ describe Ci::CreatePipelineService do
       end
 
       context 'when trigger belongs to a developer' do
-        let(:user) {}
+        let(:user) { create(:user) }
+        let(:trigger) { create(:ci_trigger, owner: user) }
+        let(:trigger_request) { create(:ci_trigger_request, trigger: trigger) }
 
-        let(:trigger_request) do
-          create(:ci_trigger_request).tap do |request|
-            user = create(:user)
-            project.add_developer(user)
-            request.trigger.update(owner: user)
-          end
+        before do
+          project.add_developer(user)
         end
 
         it 'does not create a pipeline' do
@@ -431,17 +429,15 @@ describe Ci::CreatePipelineService do
       end
 
       context 'when trigger belongs to a master' do
-        let(:user) {}
+        let(:user) { create(:user) }
+        let(:trigger) { create(:ci_trigger, owner: user) }
+        let(:trigger_request) { create(:ci_trigger_request, trigger: trigger) }
 
-        let(:trigger_request) do
-          create(:ci_trigger_request).tap do |request|
-            user = create(:user)
-            project.add_master(user)
-            request.trigger.update(owner: user)
-          end
+        before do
+          project.add_master(user)
         end
 
-        it 'does not create a pipeline' do
+        it 'creates a pipeline' do
           expect(execute_service(trigger_request: trigger_request))
             .to be_persisted
           expect(Ci::Pipeline.count).to eq(1)