1 files changed, 56 insertions, 0 deletions
diff --git a/spec/frontend/issue_show/components/incidents/highlight_bar_spec.js b/spec/frontend/issue_show/components/incidents/highlight_bar_spec.js
new file mode 100644
index 00000000000..8d50df5e406
--- /dev/null
+++ b/spec/frontend/issue_show/components/incidents/highlight_bar_spec.js
@@ -0,0 +1,56 @@
+import { shallowMount } from '@vue/test-utils';
+import { GlLink } from '@gitlab/ui';
+import HighlightBar from '~/issue_show/components/incidents/highlight_bar.vue';
+import { formatDate } from '~/lib/utils/datetime_utility';
+
+jest.mock('~/lib/utils/datetime_utility');
+
+describe('Highlight Bar', () => {
+  let wrapper;
+
+  const alert = {
+    startedAt: '2020-05-29T10:39:22Z',
+    detailsUrl: 'http://127.0.0.1:3000/root/unique-alerts/-/alert_management/1/details',
+    eventCount: 1,
+    title: 'Alert 1',
+  };
+
+  const mountComponent = () => {
+    wrapper = shallowMount(HighlightBar, {
+      propsData: {
+        alert,
+      },
+    });
+  };
+
+  beforeEach(() => {
+    mountComponent();
+  });
+
+  afterEach(() => {
+    if (wrapper) {
+      wrapper.destroy();
+      wrapper = null;
+    }
+  });
+
+  const findLink = () => wrapper.find(GlLink);
+
+  it('renders a link to the alert page', () => {
+    expect(findLink().exists()).toBe(true);
+    expect(findLink().attributes('href')).toBe(alert.detailsUrl);
+    expect(findLink().text()).toContain(alert.title);
+  });
+
+  it('renders formatted start time of the alert', () => {
+    const formattedDate = '2020-05-29 UTC';
+    formatDate.mockReturnValueOnce(formattedDate);
+    mountComponent();
+    expect(formatDate).toHaveBeenCalledWith(alert.startedAt, 'yyyy-mm-dd Z');
+    expect(wrapper.text()).toContain(formattedDate);
+  });
+
+  it('renders a number of alert events', () => {
+    expect(wrapper.text()).toContain(alert.eventCount);
+  });
+});