Add unit tests and fix map load

tests/unit/Navbar.spec.js

@@ -0,0 +1,42 @@
+import { expect } from 'chai'
+import { shallowMount, RouterLinkStub } from '@vue/test-utils'
+import { nextTick } from 'vue'
+import Navbar from '@/components/Navbar.vue'
+
+describe('Navbar.vue Component Test', () => {
+  let wrapper;
+  let componentInstance;
+  beforeEach(() => {
+    wrapper = shallowMount(Navbar, {
+      global: {
+        stubs: {
+          'router-link': RouterLinkStub
+        }
+      }
+    })
+    componentInstance = wrapper.vm;
+  })
+
+  it('Not logged in test', () => {
+    expect(wrapper.text()).to.include('Irish Rail Tracker');
+    expect(wrapper.text()).to.include('Home');
+    expect(wrapper.text()).to.include('Insights');
+    expect(wrapper.text()).to.include('Login');
+    expect(wrapper.text()).to.include('Sign Up');
+  }),
+
+  it('Logged in test', () => {
+    // re-render the component
+    wrapper.setData({isLoggedIn: true})
+    nextTick(() => {
+      expect(wrapper.text()).to.include('Irish Rail Tracker');
+      expect(wrapper.text()).to.include('Home');
+      expect(wrapper.text()).to.include('Insights');
+      expect(wrapper.text()).to.include('Account Settings');
+      expect(wrapper.text()).to.include('Logout');
+    })
+  })
+})
+
+
+// wrapper.find('input[type=checkbox]').setChecked();