tests(unit): add more test cases and snapshots

Author: xidedix

tests/unit/Users.spec.js

@@ -1,4 +1,5 @@
 import Vue from 'vue'
+import { shallowMount } from '@vue/test-utils';
 import BootstrapVue from 'bootstrap-vue'
 import DefaultAside from '@/containers/DefaultAside'
 
@@ -8,4 +9,8 @@ describe('DefaultAside.vue', () => {
   it('has a name', () => {
     expect(DefaultAside.name).toMatch('DefaultAside')
   })
+  test('renders correctly', () => {
+    const wrapper = shallowMount(DefaultAside)
+    expect(wrapper.element).toMatchSnapshot()
+  })
 })