Test for existing spec

Comment implementation code and new spec

spec/controllers/projects/pipelines_controller_spec.rb

@@ -10,6 +10,7 @@ describe Projects::PipelinesController do
   let(:feature) { ProjectFeature::ENABLED }
 
   before do
+    allow(Sidekiq.logger).to receive(:info)
     stub_not_protect_default_branch
     project.add_developer(user)
     project.project_feature.update(builds_access_level: feature)
@@ -583,6 +584,71 @@ describe Projects::PipelinesController do
     end
   end
 
+  describe 'POST create' do
+    let(:project) { create(:project, :public, :repository) }
+
+    before do
+      project.add_developer(user)
+      project.project_feature.update(builds_access_level: feature)
+    end
+
+    context 'with a valid .gitlab-ci.yml file' do
+      before do
+        stub_ci_pipeline_yaml_file(YAML.dump({
+          test: {
+            stage: 'test',
+            script: 'echo'
+          }
+        }))
+      end
+
+      shared_examples 'creates a pipeline' do
+        it do
+          expect { post_request }.to change { project.ci_pipelines.count }.by(1)
+
+          pipeline = project.ci_pipelines.last
+          expected_redirect_path = Gitlab::Routing.url_helpers.project_pipeline_path(project, pipeline)
+          expect(pipeline).to be_pending
+          expect(response).to redirect_to(expected_redirect_path)
+        end
+      end
+
+      it_behaves_like 'creates a pipeline'
+
+      context 'when latest commit contains [ci skip]' do
+        before do
+          project.repository.create_file(user, 'new-file.txt', 'A new file',
+                                         message: '[skip ci] This is a test',
+                                         branch_name: 'master')
+        end
+
+        it_behaves_like 'creates a pipeline'
+      end
+    end
+
+    context 'with an invalid .gitlab-ci.yml file' do
+      before do
+        stub_ci_pipeline_yaml_file('invalid yaml file')
+      end
+
+      it 'does not persist a pipeline' do
+        expect { post_request }.not_to change { project.ci_pipelines.count }
+
+        expect(response).to have_gitlab_http_status(:ok)
+      end
+    end
+
+    def post_request
+      post :create, params: {
+        namespace_id: project.namespace,
+        project_id: project,
+        pipeline: {
+          ref: 'master'
+        }
+      }
+    end
+  end
+
   describe 'POST retry.json' do
     let!(:pipeline) { create(:ci_pipeline, :failed, project: project) }
     let!(:build) { create(:ci_build, :failed, pipeline: pipeline) }