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diff --git a/spec/javascripts/vue_shared/components/project_selector/project_selector_spec.js b/spec/javascripts/vue_shared/components/project_selector/project_selector_spec.js
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+++ b/spec/javascripts/vue_shared/components/project_selector/project_selector_spec.js
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+import Vue from 'vue';
+import _ from 'underscore';
+import ProjectSelector from '~/vue_shared/components/project_selector/project_selector.vue';
+import ProjectListItem from '~/vue_shared/components/project_selector/project_list_item.vue';
+import { shallowMount } from '@vue/test-utils';
+import { trimText } from 'spec/helpers/vue_component_helper';
+
+describe('ProjectSelector component', () => {
+  let wrapper;
+  let vm;
+  loadJSONFixtures('projects.json');
+  const allProjects = getJSONFixture('projects.json');
+  const searchResults = allProjects.slice(0, 5);
+  let selected = [];
+  selected = selected.concat(allProjects.slice(0, 3)).concat(allProjects.slice(5, 8));
+
+  beforeEach(() => {
+    jasmine.clock().install();
+
+    wrapper = shallowMount(Vue.extend(ProjectSelector), {
+      propsData: {
+        projectSearchResults: searchResults,
+        selectedProjects: selected,
+        showNoResultsMessage: false,
+        showMinimumSearchQueryMessage: false,
+        showLoadingIndicator: false,
+        showSearchErrorMessage: false,
+      },
+      attachToDocument: true,
+    });
+
+    ({ vm } = wrapper);
+  });
+
+  afterEach(() => {
+    jasmine.clock().uninstall();
+    vm.$destroy();
+  });
+
+  it('renders the search results', () => {
+    expect(wrapper.findAll('.js-project-list-item').length).toBe(5);
+  });
+
+  it(`triggers a (debounced) search when the search input value changes`, () => {
+    spyOn(vm, '$emit');
+    const query = 'my test query!';
+    const searchInput = wrapper.find('.js-project-selector-input');
+    searchInput.setValue(query);
+    searchInput.trigger('input');
+
+    expect(vm.$emit).not.toHaveBeenCalledWith();
+    jasmine.clock().tick(501);
+
+    expect(vm.$emit).toHaveBeenCalledWith('searched', query);
+  });
+
+  it(`debounces the search input`, () => {
+    spyOn(vm, '$emit');
+    const searchInput = wrapper.find('.js-project-selector-input');
+
+    const updateSearchQuery = (count = 0) => {
+      if (count === 10) {
+        jasmine.clock().tick(101);
+
+        expect(vm.$emit).toHaveBeenCalledTimes(1);
+        expect(vm.$emit).toHaveBeenCalledWith('searched', `search query #9`);
+      } else {
+        searchInput.setValue(`search query #${count}`);
+        searchInput.trigger('input');
+
+        jasmine.clock().tick(400);
+        updateSearchQuery(count + 1);
+      }
+    };
+
+    updateSearchQuery();
+  });
+
+  it(`includes a placeholder in the search box`, () => {
+    expect(wrapper.find('.js-project-selector-input').attributes('placeholder')).toBe(
+      'Search your projects',
+    );
+  });
+
+  it(`triggers a "projectClicked" event when a project is clicked`, () => {
+    spyOn(vm, '$emit');
+    wrapper.find(ProjectListItem).vm.$emit('click', _.first(searchResults));
+
+    expect(vm.$emit).toHaveBeenCalledWith('projectClicked', _.first(searchResults));
+  });
+
+  it(`shows a "no results" message if showNoResultsMessage === true`, () => {
+    wrapper.setProps({ showNoResultsMessage: true });
+
+    expect(wrapper.contains('.js-no-results-message')).toBe(true);
+
+    const noResultsEl = wrapper.find('.js-no-results-message');
+
+    expect(trimText(noResultsEl.text())).toEqual('Sorry, no projects matched your search');
+  });
+
+  it(`shows a "minimum seach query" message if showMinimumSearchQueryMessage === true`, () => {
+    wrapper.setProps({ showMinimumSearchQueryMessage: true });
+
+    expect(wrapper.contains('.js-minimum-search-query-message')).toBe(true);
+
+    const minimumSearchEl = wrapper.find('.js-minimum-search-query-message');
+
+    expect(trimText(minimumSearchEl.text())).toEqual('Enter at least three characters to search');
+  });
+
+  it(`shows a error message if showSearchErrorMessage === true`, () => {
+    wrapper.setProps({ showSearchErrorMessage: true });
+
+    expect(wrapper.contains('.js-search-error-message')).toBe(true);
+
+    const errorMessageEl = wrapper.find('.js-search-error-message');
+
+    expect(trimText(errorMessageEl.text())).toEqual(
+      'Something went wrong, unable to search projects',
+    );
+  });
+
+  it(`focuses the input element when the focusSearchInput() method is called`, () => {
+    const input = wrapper.find('.js-project-selector-input');
+
+    expect(document.activeElement).not.toBe(input.element);
+    vm.focusSearchInput();
+
+    expect(document.activeElement).toBe(input.element);
+  });
+});