1 files changed, 105 insertions, 0 deletions
diff --git a/spec/services/git/process_ref_changes_service_spec.rb b/spec/services/git/process_ref_changes_service_spec.rb
new file mode 100644
index 00000000000..4d394a29867
--- /dev/null
+++ b/spec/services/git/process_ref_changes_service_spec.rb
@@ -0,0 +1,105 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Git::ProcessRefChangesService do
+  let(:project) { create(:project, :repository) }
+  let(:user) { project.owner }
+  let(:params) { { changes: git_changes } }
+
+  subject { described_class.new(project, user, params) }
+
+  shared_examples_for 'service for processing ref changes' do |push_service_class|
+    let(:service) { double(execute: true) }
+    let(:git_changes) { double(branch_changes: [], tag_changes: []) }
+
+    let(:changes) do
+      [
+        { index: 0, oldrev: Gitlab::Git::BLANK_SHA, newrev: '789012', ref: "#{ref_prefix}/create" },
+        { index: 1, oldrev: '123456', newrev: '789012', ref: "#{ref_prefix}/update" },
+        { index: 2, oldrev: '123456', newrev: Gitlab::Git::BLANK_SHA, ref: "#{ref_prefix}/delete" }
+      ]
+    end
+
+    before do
+      allow(git_changes).to receive(changes_method).and_return(changes)
+    end
+
+    it "calls #{push_service_class}" do
+      expect(push_service_class)
+        .to receive(:new)
+        .exactly(changes.count).times
+        .and_return(service)
+
+      subject.execute
+    end
+
+    context 'pipeline creation' do
+      context 'with valid .gitlab-ci.yml' do
+        before do
+          stub_ci_pipeline_to_return_yaml_file
+
+          allow_any_instance_of(Project)
+            .to receive(:commit)
+            .and_return(project.commit)
+
+          allow_any_instance_of(Repository)
+            .to receive(:branch_exists?)
+            .and_return(true)
+        end
+
+        context 'when git_push_create_all_pipelines is disabled' do
+          before do
+            stub_feature_flags(git_push_create_all_pipelines: false)
+          end
+
+          it 'creates pipeline for branches and tags' do
+            subject.execute
+
+            expect(Ci::Pipeline.pluck(:ref)).to contain_exactly('create', 'update', 'delete')
+          end
+
+          it "creates exactly #{described_class::PIPELINE_PROCESS_LIMIT} pipelines" do
+            stub_const("#{described_class}::PIPELINE_PROCESS_LIMIT", changes.count - 1)
+
+            expect { subject.execute }.to change { Ci::Pipeline.count }.by(described_class::PIPELINE_PROCESS_LIMIT)
+          end
+        end
+
+        context 'when git_push_create_all_pipelines is enabled' do
+          before do
+            stub_feature_flags(git_push_create_all_pipelines: true)
+          end
+
+          it 'creates all pipelines' do
+            expect { subject.execute }.to change { Ci::Pipeline.count }.by(changes.count)
+          end
+        end
+      end
+
+      context 'with invalid .gitlab-ci.yml' do
+        before do
+          stub_ci_pipeline_yaml_file(nil)
+        end
+
+        it 'does not create a pipeline' do
+          expect { subject.execute }.not_to change { Ci::Pipeline.count }
+        end
+      end
+    end
+  end
+
+  context 'branch changes' do
+    let(:changes_method) { :branch_changes }
+    let(:ref_prefix) { 'refs/heads' }
+
+    it_behaves_like 'service for processing ref changes', Git::BranchPushService
+  end
+
+  context 'tag changes' do
+    let(:changes_method) { :tag_changes }
+    let(:ref_prefix) { 'refs/tags' }
+
+    it_behaves_like 'service for processing ref changes', Git::TagPushService
+  end
+end