1 files changed, 96 insertions, 0 deletions
diff --git a/spec/services/work_items/create_and_link_service_spec.rb b/spec/services/work_items/create_and_link_service_spec.rb
new file mode 100644
index 00000000000..93c029bdab1
--- /dev/null
+++ b/spec/services/work_items/create_and_link_service_spec.rb
@@ -0,0 +1,96 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe WorkItems::CreateAndLinkService do
+  let_it_be(:group) { create(:group) }
+  let_it_be(:project) { create(:project, group: group) }
+  let_it_be(:user) { create(:user) }
+  let_it_be(:related_work_item) { create(:work_item, project: project) }
+
+  let(:spam_params) { double }
+  let(:link_params) { {} }
+  let(:params) do
+    {
+      title: 'Awesome work item',
+      description: 'please fix'
+    }
+  end
+
+  before_all do
+    project.add_developer(user)
+  end
+
+  describe '#execute' do
+    subject(:service_result) { described_class.new(project: project, current_user: user, params: params, spam_params: spam_params, link_params: link_params).execute }
+
+    before do
+      stub_spam_services
+    end
+
+    context 'when work item params are valid' do
+      it { is_expected.to be_success }
+
+      it 'creates a work item successfully with no links' do
+        expect do
+          service_result
+        end.to change(WorkItem, :count).by(1).and(
+          not_change(IssueLink, :count)
+        )
+      end
+
+      context 'when link params are valid' do
+        let(:link_params) { { issuable_references: [related_work_item.to_reference] } }
+
+        it 'creates a work item successfully with links' do
+          expect do
+            service_result
+          end.to change(WorkItem, :count).by(1).and(
+            change(IssueLink, :count).by(1)
+          )
+        end
+      end
+
+      context 'when link params are invalid' do
+        let(:link_params) { { issuable_references: ['invalid reference'] } }
+
+        it { is_expected.to be_error }
+
+        it 'does not create a link and does not rollback transaction' do
+          expect do
+            service_result
+          end.to not_change(IssueLink, :count).and(
+            change(WorkItem, :count).by(1)
+          )
+        end
+
+        it 'returns a link creation error message' do
+          expect(service_result.errors).to contain_exactly('No matching issue found. Make sure that you are adding a valid issue URL.')
+        end
+      end
+    end
+
+    context 'when work item params are invalid' do
+      let(:params) do
+        {
+          title: '',
+          description: 'invalid work item'
+        }
+      end
+
+      it { is_expected.to be_error }
+
+      it 'does not create a work item or links' do
+        expect do
+          service_result
+        end.to not_change(WorkItem, :count).and(
+          not_change(IssueLink, :count)
+        )
+      end
+
+      it 'returns work item errors' do
+        expect(service_result.errors).to contain_exactly("Title can't be blank")
+      end
+    end
+  end
+end