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diff --git a/spec/frontend/frequent_items/components/app_spec.js b/spec/frontend/frequent_items/components/app_spec.js
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+++ b/spec/frontend/frequent_items/components/app_spec.js
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+import MockAdapter from 'axios-mock-adapter';
+import Vue from 'vue';
+import { mountComponentWithStore } from 'helpers/vue_mount_component_helper';
+import axios from '~/lib/utils/axios_utils';
+import appComponent from '~/frequent_items/components/app.vue';
+import eventHub from '~/frequent_items/event_hub';
+import store from '~/frequent_items/store';
+import { FREQUENT_ITEMS, HOUR_IN_MS } from '~/frequent_items/constants';
+import { getTopFrequentItems } from '~/frequent_items/utils';
+import { currentSession, mockFrequentProjects, mockSearchedProjects } from '../mock_data';
+import { useLocalStorageSpy } from 'helpers/local_storage_helper';
+import waitForPromises from 'helpers/wait_for_promises';
+
+useLocalStorageSpy();
+
+let session;
+const createComponentWithStore = (namespace = 'projects') => {
+  session = currentSession[namespace];
+  gon.api_version = session.apiVersion;
+  const Component = Vue.extend(appComponent);
+
+  return mountComponentWithStore(Component, {
+    store,
+    props: {
+      namespace,
+      currentUserName: session.username,
+      currentItem: session.project || session.group,
+    },
+  });
+};
+
+describe('Frequent Items App Component', () => {
+  let vm;
+  let mock;
+
+  beforeEach(() => {
+    mock = new MockAdapter(axios);
+    vm = createComponentWithStore();
+  });
+
+  afterEach(() => {
+    mock.restore();
+    vm.$destroy();
+  });
+
+  describe('methods', () => {
+    describe('dropdownOpenHandler', () => {
+      it('should fetch frequent items when no search has been previously made on desktop', () => {
+        jest.spyOn(vm, 'fetchFrequentItems').mockImplementation(() => {});
+
+        vm.dropdownOpenHandler();
+
+        expect(vm.fetchFrequentItems).toHaveBeenCalledWith();
+      });
+    });
+
+    describe('logItemAccess', () => {
+      let storage;
+
+      beforeEach(() => {
+        storage = {};
+
+        localStorage.setItem.mockImplementation((storageKey, value) => {
+          storage[storageKey] = value;
+        });
+
+        localStorage.getItem.mockImplementation(storageKey => {
+          if (storage[storageKey]) {
+            return storage[storageKey];
+          }
+
+          return null;
+        });
+      });
+
+      it('should create a project store if it does not exist and adds a project', () => {
+        vm.logItemAccess(session.storageKey, session.project);
+
+        const projects = JSON.parse(storage[session.storageKey]);
+
+        expect(projects.length).toBe(1);
+        expect(projects[0].frequency).toBe(1);
+        expect(projects[0].lastAccessedOn).toBeDefined();
+      });
+
+      it('should prevent inserting same report multiple times into store', () => {
+        vm.logItemAccess(session.storageKey, session.project);
+        vm.logItemAccess(session.storageKey, session.project);
+
+        const projects = JSON.parse(storage[session.storageKey]);
+
+        expect(projects.length).toBe(1);
+      });
+
+      it('should increase frequency of report if it was logged multiple times over the course of an hour', () => {
+        let projects;
+        const newTimestamp = Date.now() + HOUR_IN_MS + 1;
+
+        vm.logItemAccess(session.storageKey, session.project);
+        projects = JSON.parse(storage[session.storageKey]);
+
+        expect(projects[0].frequency).toBe(1);
+
+        vm.logItemAccess(session.storageKey, {
+          ...session.project,
+          lastAccessedOn: newTimestamp,
+        });
+        projects = JSON.parse(storage[session.storageKey]);
+
+        expect(projects[0].frequency).toBe(2);
+        expect(projects[0].lastAccessedOn).not.toBe(session.project.lastAccessedOn);
+      });
+
+      it('should always update project metadata', () => {
+        let projects;
+        const oldProject = {
+          ...session.project,
+        };
+
+        const newProject = {
+          ...session.project,
+          name: 'New Name',
+          avatarUrl: 'new/avatar.png',
+          namespace: 'New / Namespace',
+          webUrl: 'http://localhost/new/web/url',
+        };
+
+        vm.logItemAccess(session.storageKey, oldProject);
+        projects = JSON.parse(storage[session.storageKey]);
+
+        expect(projects[0].name).toBe(oldProject.name);
+        expect(projects[0].avatarUrl).toBe(oldProject.avatarUrl);
+        expect(projects[0].namespace).toBe(oldProject.namespace);
+        expect(projects[0].webUrl).toBe(oldProject.webUrl);
+
+        vm.logItemAccess(session.storageKey, newProject);
+        projects = JSON.parse(storage[session.storageKey]);
+
+        expect(projects[0].name).toBe(newProject.name);
+        expect(projects[0].avatarUrl).toBe(newProject.avatarUrl);
+        expect(projects[0].namespace).toBe(newProject.namespace);
+        expect(projects[0].webUrl).toBe(newProject.webUrl);
+      });
+
+      it('should not add more than 20 projects in store', () => {
+        for (let id = 0; id < FREQUENT_ITEMS.MAX_COUNT; id += 1) {
+          const project = {
+            ...session.project,
+            id,
+          };
+          vm.logItemAccess(session.storageKey, project);
+        }
+
+        const projects = JSON.parse(storage[session.storageKey]);
+
+        expect(projects.length).toBe(FREQUENT_ITEMS.MAX_COUNT);
+      });
+    });
+  });
+
+  describe('created', () => {
+    it('should bind event listeners on eventHub', done => {
+      jest.spyOn(eventHub, '$on').mockImplementation(() => {});
+
+      createComponentWithStore().$mount();
+
+      Vue.nextTick(() => {
+        expect(eventHub.$on).toHaveBeenCalledWith('projects-dropdownOpen', expect.any(Function));
+        done();
+      });
+    });
+  });
+
+  describe('beforeDestroy', () => {
+    it('should unbind event listeners on eventHub', done => {
+      jest.spyOn(eventHub, '$off').mockImplementation(() => {});
+
+      vm.$mount();
+      vm.$destroy();
+
+      Vue.nextTick(() => {
+        expect(eventHub.$off).toHaveBeenCalledWith('projects-dropdownOpen', expect.any(Function));
+        done();
+      });
+    });
+  });
+
+  describe('template', () => {
+    it('should render search input', () => {
+      expect(vm.$el.querySelector('.search-input-container')).toBeDefined();
+    });
+
+    it('should render loading animation', done => {
+      vm.$store.dispatch('fetchSearchedItems');
+
+      Vue.nextTick(() => {
+        const loadingEl = vm.$el.querySelector('.loading-animation');
+
+        expect(loadingEl).toBeDefined();
+        expect(loadingEl.classList.contains('prepend-top-20')).toBe(true);
+        expect(loadingEl.querySelector('span').getAttribute('aria-label')).toBe('Loading projects');
+        done();
+      });
+    });
+
+    it('should render frequent projects list header', done => {
+      Vue.nextTick(() => {
+        const sectionHeaderEl = vm.$el.querySelector('.section-header');
+
+        expect(sectionHeaderEl).toBeDefined();
+        expect(sectionHeaderEl.innerText.trim()).toBe('Frequently visited');
+        done();
+      });
+    });
+
+    it('should render frequent projects list', done => {
+      const expectedResult = getTopFrequentItems(mockFrequentProjects);
+      localStorage.getItem.mockImplementation(() => JSON.stringify(mockFrequentProjects));
+
+      expect(vm.$el.querySelectorAll('.frequent-items-list-container li').length).toBe(1);
+
+      vm.fetchFrequentItems();
+      Vue.nextTick(() => {
+        expect(vm.$el.querySelectorAll('.frequent-items-list-container li').length).toBe(
+          expectedResult.length,
+        );
+        done();
+      });
+    });
+
+    it('should render searched projects list', done => {
+      mock.onGet(/\/api\/v4\/projects.json(.*)$/).replyOnce(200, mockSearchedProjects);
+
+      expect(vm.$el.querySelectorAll('.frequent-items-list-container li').length).toBe(1);
+
+      vm.$store.dispatch('setSearchQuery', 'gitlab');
+      vm.$nextTick()
+        .then(() => {
+          expect(vm.$el.querySelector('.loading-animation')).toBeDefined();
+        })
+        .then(waitForPromises)
+        .then(() => {
+          expect(vm.$el.querySelectorAll('.frequent-items-list-container li').length).toBe(
+            mockSearchedProjects.data.length,
+          );
+        })
+        .then(done)
+        .catch(done.fail);
+    });
+  });
+});