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diff --git a/spec/frontend/releases/components/milestone_list_spec.js b/spec/frontend/releases/components/milestone_list_spec.js
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+++ b/spec/frontend/releases/components/milestone_list_spec.js
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+import { shallowMount } from '@vue/test-utils';
+import { GlLink } from '@gitlab/ui';
+import MilestoneList from '~/releases/components/milestone_list.vue';
+import Icon from '~/vue_shared/components/icon.vue';
+import _ from 'underscore';
+import { milestones } from '../mock_data';
+
+describe('Milestone list', () => {
+  let wrapper;
+
+  const factory = milestonesProp => {
+    wrapper = shallowMount(MilestoneList, {
+      propsData: {
+        milestones: milestonesProp,
+      },
+      sync: false,
+    });
+  };
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  it('renders the milestone icon', () => {
+    factory(milestones);
+
+    expect(wrapper.find(Icon).exists()).toBe(true);
+  });
+
+  it('renders the label as "Milestone" if only a single milestone is passed in', () => {
+    factory(milestones.slice(0, 1));
+
+    expect(wrapper.find('.js-label-text').text()).toEqual('Milestone');
+  });
+
+  it('renders the label as "Milestones" if more than one milestone is passed in', () => {
+    factory(milestones);
+
+    expect(wrapper.find('.js-label-text').text()).toEqual('Milestones');
+  });
+
+  it('renders a link to the milestone with a tooltip', () => {
+    const milestone = _.first(milestones);
+    factory([milestone]);
+
+    const milestoneLink = wrapper.find(GlLink);
+
+    expect(milestoneLink.exists()).toBe(true);
+
+    expect(milestoneLink.text()).toBe(milestone.title);
+
+    expect(milestoneLink.attributes('href')).toBe(milestone.web_url);
+
+    expect(milestoneLink.attributes('data-original-title')).toBe(milestone.description);
+  });
+});