1 files changed, 78 insertions, 0 deletions
diff --git a/spec/frontend/monitoring/embed/embed_spec.js b/spec/frontend/monitoring/embed/embed_spec.js
new file mode 100644
index 00000000000..1ce14e2418a
--- /dev/null
+++ b/spec/frontend/monitoring/embed/embed_spec.js
@@ -0,0 +1,78 @@
+import { createLocalVue, shallowMount } from '@vue/test-utils';
+import Vuex from 'vuex';
+import Embed from '~/monitoring/components/embed.vue';
+import MonitorTimeSeriesChart from '~/monitoring/components/charts/time_series.vue';
+import { TEST_HOST } from 'helpers/test_constants';
+import { groups, initialState, metricsData, metricsWithData } from './mock_data';
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+describe('Embed', () => {
+  let wrapper;
+  let store;
+  let actions;
+
+  function mountComponent() {
+    wrapper = shallowMount(Embed, {
+      localVue,
+      store,
+      propsData: {
+        dashboardUrl: TEST_HOST,
+      },
+    });
+  }
+
+  beforeEach(() => {
+    actions = {
+      setFeatureFlags: () => {},
+      setShowErrorBanner: () => {},
+      setEndpoints: () => {},
+      fetchMetricsData: () => {},
+    };
+
+    store = new Vuex.Store({
+      modules: {
+        monitoringDashboard: {
+          namespaced: true,
+          actions,
+          state: initialState,
+        },
+      },
+    });
+  });
+
+  afterEach(() => {
+    if (wrapper) {
+      wrapper.destroy();
+    }
+  });
+
+  describe('no metrics are available yet', () => {
+    beforeEach(() => {
+      mountComponent();
+    });
+
+    it('shows an empty state when no metrics are present', () => {
+      expect(wrapper.find('.metrics-embed').exists()).toBe(true);
+      expect(wrapper.find(MonitorTimeSeriesChart).exists()).toBe(false);
+    });
+  });
+
+  describe('metrics are available', () => {
+    beforeEach(() => {
+      store.state.monitoringDashboard.groups = groups;
+      store.state.monitoringDashboard.groups[0].metrics = metricsData;
+      store.state.monitoringDashboard.metricsWithData = metricsWithData;
+
+      mountComponent();
+    });
+
+    it('shows a chart when metrics are present', () => {
+      wrapper.setProps({});
+      expect(wrapper.find('.metrics-embed').exists()).toBe(true);
+      expect(wrapper.find(MonitorTimeSeriesChart).exists()).toBe(true);
+      expect(wrapper.findAll(MonitorTimeSeriesChart).length).toBe(2);
+    });
+  });
+});