1 files changed, 102 insertions, 0 deletions
diff --git a/spec/frontend/monitoring/components/embeds/metric_embed_spec.js b/spec/frontend/monitoring/components/embeds/metric_embed_spec.js
new file mode 100644
index 00000000000..d0fe22cefec
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+++ b/spec/frontend/monitoring/components/embeds/metric_embed_spec.js
@@ -0,0 +1,102 @@
+import { createLocalVue, shallowMount } from '@vue/test-utils';
+import Vuex from 'vuex';
+import PanelType from 'ee_else_ce/monitoring/components/panel_type.vue';
+import { TEST_HOST } from 'helpers/test_constants';
+import MetricEmbed from '~/monitoring/components/embeds/metric_embed.vue';
+import { groups, initialState, metricsData, metricsWithData } from './mock_data';
+
+const localVue = createLocalVue();
+localVue.use(Vuex);
+
+describe('MetricEmbed', () => {
+  let wrapper;
+  let store;
+  let actions;
+  let metricsWithDataGetter;
+
+  function mountComponent() {
+    wrapper = shallowMount(MetricEmbed, {
+      localVue,
+      store,
+      propsData: {
+        dashboardUrl: TEST_HOST,
+      },
+    });
+  }
+
+  beforeEach(() => {
+    actions = {
+      setFeatureFlags: jest.fn(),
+      setShowErrorBanner: jest.fn(),
+      setEndpoints: jest.fn(),
+      setTimeRange: jest.fn(),
+      fetchDashboard: jest.fn(),
+    };
+
+    metricsWithDataGetter = jest.fn();
+
+    store = new Vuex.Store({
+      modules: {
+        monitoringDashboard: {
+          namespaced: true,
+          actions,
+          getters: {
+            metricsWithData: () => metricsWithDataGetter,
+          },
+          state: initialState,
+        },
+      },
+    });
+  });
+
+  afterEach(() => {
+    metricsWithDataGetter.mockClear();
+    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(PanelType).exists()).toBe(false);
+    });
+  });
+
+  describe('metrics are available', () => {
+    beforeEach(() => {
+      store.state.monitoringDashboard.dashboard.panelGroups = groups;
+      store.state.monitoringDashboard.dashboard.panelGroups[0].panels = metricsData;
+
+      metricsWithDataGetter.mockReturnValue(metricsWithData);
+
+      mountComponent();
+    });
+
+    it('calls actions to fetch data', () => {
+      const expectedTimeRangePayload = expect.objectContaining({
+        start: expect.any(String),
+        end: expect.any(String),
+      });
+
+      expect(actions.setTimeRange).toHaveBeenCalledTimes(1);
+      expect(actions.setTimeRange.mock.calls[0][1]).toEqual(expectedTimeRangePayload);
+
+      expect(actions.fetchDashboard).toHaveBeenCalled();
+    });
+
+    it('shows a chart when metrics are present', () => {
+      expect(wrapper.find('.metrics-embed').exists()).toBe(true);
+      expect(wrapper.find(PanelType).exists()).toBe(true);
+      expect(wrapper.findAll(PanelType).length).toBe(2);
+    });
+
+    it('includes groupId with dashboardUrl', () => {
+      expect(wrapper.find(PanelType).props('groupId')).toBe(TEST_HOST);
+    });
+  });
+});