1 files changed, 152 insertions, 0 deletions
diff --git a/spec/frontend/vue_shared/components/filtered_search_bar/tokens/milestone_token_spec.js b/spec/frontend/vue_shared/components/filtered_search_bar/tokens/milestone_token_spec.js
new file mode 100644
index 00000000000..de893bf44c8
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+++ b/spec/frontend/vue_shared/components/filtered_search_bar/tokens/milestone_token_spec.js
@@ -0,0 +1,152 @@
+import { mount } from '@vue/test-utils';
+import { GlFilteredSearchToken, GlFilteredSearchTokenSegment } from '@gitlab/ui';
+import MockAdapter from 'axios-mock-adapter';
+import waitForPromises from 'helpers/wait_for_promises';
+import axios from '~/lib/utils/axios_utils';
+
+import createFlash from '~/flash';
+import MilestoneToken from '~/vue_shared/components/filtered_search_bar/tokens/milestone_token.vue';
+
+import {
+  mockMilestoneToken,
+  mockMilestones,
+  mockRegularMilestone,
+  mockEscapedMilestone,
+} from '../mock_data';
+
+jest.mock('~/flash');
+
+const createComponent = ({
+  config = mockMilestoneToken,
+  value = { data: '' },
+  active = false,
+} = {}) =>
+  mount(MilestoneToken, {
+    propsData: {
+      config,
+      value,
+      active,
+    },
+    provide: {
+      portalName: 'fake target',
+      alignSuggestions: function fakeAlignSuggestions() {},
+    },
+    stubs: {
+      Portal: {
+        template: '<div><slot></slot></div>',
+      },
+      GlFilteredSearchSuggestionList: {
+        template: '<div></div>',
+        methods: {
+          getValue: () => '=',
+        },
+      },
+    },
+  });
+
+describe('MilestoneToken', () => {
+  let mock;
+  let wrapper;
+
+  beforeEach(() => {
+    mock = new MockAdapter(axios);
+    wrapper = createComponent();
+  });
+
+  afterEach(() => {
+    mock.restore();
+    wrapper.destroy();
+  });
+
+  describe('computed', () => {
+    beforeEach(async () => {
+      // Milestone title with spaces is always enclosed in quotations by component.
+      wrapper = createComponent({ value: { data: `"${mockEscapedMilestone.title}"` } });
+
+      wrapper.setData({
+        milestones: mockMilestones,
+      });
+
+      await wrapper.vm.$nextTick();
+    });
+
+    describe('currentValue', () => {
+      it('returns lowercase string for `value.data`', () => {
+        expect(wrapper.vm.currentValue).toBe('"5.0 rc1"');
+      });
+    });
+
+    describe('activeMilestone', () => {
+      it('returns object for currently present `value.data`', () => {
+        expect(wrapper.vm.activeMilestone).toEqual(mockEscapedMilestone);
+      });
+    });
+  });
+
+  describe('methods', () => {
+    describe('fetchMilestoneBySearchTerm', () => {
+      it('calls `config.fetchMilestones` with provided searchTerm param', () => {
+        jest.spyOn(wrapper.vm.config, 'fetchMilestones');
+
+        wrapper.vm.fetchMilestoneBySearchTerm('foo');
+
+        expect(wrapper.vm.config.fetchMilestones).toHaveBeenCalledWith('foo');
+      });
+
+      it('sets response to `milestones` when request is successful', () => {
+        jest.spyOn(wrapper.vm.config, 'fetchMilestones').mockResolvedValue({
+          data: mockMilestones,
+        });
+
+        wrapper.vm.fetchMilestoneBySearchTerm();
+
+        return waitForPromises().then(() => {
+          expect(wrapper.vm.milestones).toEqual(mockMilestones);
+        });
+      });
+
+      it('calls `createFlash` with flash error message when request fails', () => {
+        jest.spyOn(wrapper.vm.config, 'fetchMilestones').mockRejectedValue({});
+
+        wrapper.vm.fetchMilestoneBySearchTerm('foo');
+
+        return waitForPromises().then(() => {
+          expect(createFlash).toHaveBeenCalledWith('There was a problem fetching milestones.');
+        });
+      });
+
+      it('sets `loading` to false when request completes', () => {
+        jest.spyOn(wrapper.vm.config, 'fetchMilestones').mockRejectedValue({});
+
+        wrapper.vm.fetchMilestoneBySearchTerm('foo');
+
+        return waitForPromises().then(() => {
+          expect(wrapper.vm.loading).toBe(false);
+        });
+      });
+    });
+  });
+
+  describe('template', () => {
+    beforeEach(async () => {
+      wrapper = createComponent({ value: { data: `"${mockRegularMilestone.title}"` } });
+
+      wrapper.setData({
+        milestones: mockMilestones,
+      });
+
+      await wrapper.vm.$nextTick();
+    });
+
+    it('renders gl-filtered-search-token component', () => {
+      expect(wrapper.find(GlFilteredSearchToken).exists()).toBe(true);
+    });
+
+    it('renders token item when value is selected', () => {
+      const tokenSegments = wrapper.findAll(GlFilteredSearchTokenSegment);
+
+      expect(tokenSegments).toHaveLength(3); // Milestone, =, '%"4.0"'
+      expect(tokenSegments.at(2).text()).toBe(`%"${mockRegularMilestone.title}"`); // "4.0 RC1"
+    });
+  });
+});