1 files changed, 72 insertions, 0 deletions
diff --git a/spec/services/metrics/users_starred_dashboards/create_service_spec.rb b/spec/services/metrics/users_starred_dashboards/create_service_spec.rb
new file mode 100644
index 00000000000..eac4965ba44
--- /dev/null
+++ b/spec/services/metrics/users_starred_dashboards/create_service_spec.rb
@@ -0,0 +1,72 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Metrics::UsersStarredDashboards::CreateService do
+  let_it_be(:user) { create(:user) }
+  let(:dashboard_path) { 'config/prometheus/common_metrics.yml' }
+  let(:service_instance) { described_class.new(user, project, dashboard_path) }
+  let(:project) { create(:project) }
+  let(:starred_dashboard_params) do
+    {
+      user: user,
+      project: project,
+      dashboard_path: dashboard_path
+    }
+  end
+
+  shared_examples 'prevented starred dashboard creation' do |message|
+    it 'returns error response', :aggregate_failures do
+      expect(Metrics::UsersStarredDashboard).not_to receive(:new)
+
+      response = service_instance.execute
+
+      expect(response.status).to be :error
+      expect(response.message).to eql message
+    end
+  end
+
+  describe '.execute' do
+    context 'with anonymous user' do
+      it_behaves_like 'prevented starred dashboard creation', 'You are not authorized to add star to this dashboard'
+    end
+
+    context 'with reporter user' do
+      before do
+        project.add_reporter(user)
+      end
+
+      context 'incorrect dashboard_path' do
+        let(:dashboard_path) { 'something_incorrect.yml' }
+
+        it_behaves_like 'prevented starred dashboard creation', 'Dashboard with requested path can not be found'
+      end
+
+      context 'with valid dashboard path' do
+        it 'creates starred dashboard and returns success response', :aggregate_failures do
+          expect_next_instance_of(Metrics::UsersStarredDashboard, starred_dashboard_params) do |starred_dashboard|
+            expect(starred_dashboard).to receive(:save).and_return true
+          end
+
+          response = service_instance.execute
+
+          expect(response.status).to be :success
+        end
+
+        context 'Metrics::UsersStarredDashboard has validation errors' do
+          it 'returns error response', :aggregate_failures do
+            expect_next_instance_of(Metrics::UsersStarredDashboard, starred_dashboard_params) do |starred_dashboard|
+              expect(starred_dashboard).to receive(:save).and_return(false)
+              expect(starred_dashboard).to receive(:errors).and_return(double(messages: { base: ['Model validation error'] }))
+            end
+
+            response = service_instance.execute
+
+            expect(response.status).to be :error
+            expect(response.message).to eql(base: ['Model validation error'])
+          end
+        end
+      end
+    end
+  end
+end