1 files changed, 42 insertions, 0 deletions
diff --git a/spec/lib/gitlab/metrics/dashboard/service_spec.rb b/spec/lib/gitlab/metrics/dashboard/service_spec.rb
new file mode 100644
index 00000000000..e66c356bf49
--- /dev/null
+++ b/spec/lib/gitlab/metrics/dashboard/service_spec.rb
@@ -0,0 +1,42 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::Metrics::Dashboard::Service, :use_clean_rails_memory_store_caching do
+  let(:project) { build(:project) }
+  let(:environment) { build(:environment) }
+
+  describe 'get_dashboard' do
+    let(:dashboard_schema) { JSON.parse(fixture_file('lib/gitlab/metrics/dashboard/schemas/dashboard.json')) }
+
+    it 'returns a json representation of the environment dashboard' do
+      result = described_class.new(project, environment).get_dashboard
+
+      expect(result.keys).to contain_exactly(:dashboard, :status)
+      expect(result[:status]).to eq(:success)
+
+      expect(JSON::Validator.fully_validate(dashboard_schema, result[:dashboard])).to be_empty
+    end
+
+    it 'caches the dashboard for subsequent calls' do
+      expect(YAML).to receive(:safe_load).once.and_call_original
+
+      described_class.new(project, environment).get_dashboard
+      described_class.new(project, environment).get_dashboard
+    end
+
+    context 'when the dashboard is configured incorrectly' do
+      before do
+        allow(YAML).to receive(:safe_load).and_return({})
+      end
+
+      it 'returns an appropriate message and status code' do
+        result = described_class.new(project, environment).get_dashboard
+
+        expect(result.keys).to contain_exactly(:message, :http_status, :status)
+        expect(result[:status]).to eq(:error)
+        expect(result[:http_status]).to eq(:unprocessable_entity)
+      end
+    end
+  end
+end