1 files changed, 71 insertions, 0 deletions
diff --git a/spec/services/incident_management/timeline_event_tags/create_service_spec.rb b/spec/services/incident_management/timeline_event_tags/create_service_spec.rb
new file mode 100644
index 00000000000..c1b993ce3d9
--- /dev/null
+++ b/spec/services/incident_management/timeline_event_tags/create_service_spec.rb
@@ -0,0 +1,71 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe IncidentManagement::TimelineEventTags::CreateService do
+  let_it_be(:user_with_permissions) { create(:user) }
+  let_it_be(:user_without_permissions) { create(:user) }
+  let_it_be_with_reload(:project) { create(:project) }
+
+  let(:current_user) { user_with_permissions }
+  let(:args) { { 'name': 'Test tag 1', 'project_path': project.full_path } }
+
+  let(:service) { described_class.new(project, current_user, args) }
+
+  before do
+    project.add_maintainer(user_with_permissions)
+    project.add_developer(user_without_permissions)
+  end
+
+  describe '#execute' do
+    shared_examples 'error response' do |message|
+      it 'has an informative message' do
+        expect(execute).to be_error
+        expect(execute.message).to eq(message)
+      end
+    end
+
+    shared_examples 'success response' do
+      it 'has timeline event tag' do
+        expect(execute).to be_success
+
+        result = execute.payload[:timeline_event_tag]
+        expect(result).to be_a(::IncidentManagement::TimelineEventTag)
+        expect(result.name).to eq(args[:name])
+        expect(result.project).to eq(project)
+      end
+    end
+
+    subject(:execute) { service.execute }
+
+    context 'when current user is nil' do
+      let(:current_user) { nil }
+
+      it_behaves_like 'error response',
+        'You have insufficient permissions to manage timeline event tags for this project'
+    end
+
+    context 'when user does not have permissions to create tags' do
+      let(:current_user) { user_without_permissions }
+
+      it_behaves_like 'error response',
+        'You have insufficient permissions to manage timeline event tags for this project'
+    end
+
+    context 'when error occurs during creation' do
+      let(:args) { {} }
+
+      it_behaves_like 'error response', "Name can't be blank and Name is invalid"
+    end
+
+    context 'when user has permissions' do
+      it_behaves_like 'success response'
+
+      it 'creates database record' do
+        expect { execute }.to change {
+          ::IncidentManagement::TimelineEventTag.where(project_id: project.id).count
+        }.by(1)
+      end
+    end
+  end
+end