Unit testing 在VueJS单元测试中使用querySelector会记录错误

在编写单元测试时，每当我在该组件上使用

querySelector（）

时，我都会得到大量堆栈。测试仍然通过，但只是抛出错误。以下是我对默认Hello组件的规范：

你好，vue

<template>
  <div class="hello">
    <h1>{{ msg }}</h1>
  </div>
</template>

<script>
export default {
  name: 'hello',
  data () {
    return {
      msg: 'Welcome to Your Vue.js App'
    }
  }
}
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
h1, h2 {
  font-weight: normal;
}

ul {
  list-style-type: none;
  padding: 0;
}

li {
  display: inline-block;
  margin: 0 10px;
}

a {
  color: #42b983;
}
</style>

Package.json

{
 "vue": "^2.2.2",
 "karma": "^1.6.0",
 "karma-jasmine": "^1.1.0",
 "jasmine-core": "^2.5.2",
}

错误：

错误日志：TypeError{stack:'render@http：//localhost:9876/base/index.js？6c531a43b44d6e4b9f5a01ea1fbbc3a4597aeae5:80741:28
get@http：//localhost:9876/base/index.js？6c531a43b44d6e4b9f5a01ea1fbbc3a4597aeae5:5337:29
evaluate@http：//localhost:9876/base/index.js？6c531a43b44d6e4b9f5a01ea1fbbc3a4597aeae5:5437:24
computedGetter@http：//localhost:9876/base/index.js？6c531a43b44d6e4b9f5a01ea1fbbc3a4597aeae5:5681:25
render@http：//localhost:9876/base/index.js？6c531a43b44d6e4b9f5a01ea1fbbc3a4597aeae5:91018:131
_render@http：//localhost:9876/base/index.js？6c531a43b44d6e4b9f5a01ea1fbbc3a4597aeae5:6477:26
updateComponent@http：//localhost:9876/base/index.js？6c531a43b44d6e4b9f5a01ea1fbbc3a4597aeae5:5026:28
get@http：//localhost:9876/base/index.js？6c531a43b44d6e4b9f5a01ea1fbbc3a4597aeae5:5337:29
Watcher@http：//localhost:9876/base/index.js？6c531a43b44d6e4b9f5a01ea1fbbc3a4597aeae5:5320:15
mountComponent@http：//localhost:9876/base/index.js？6c531a43b44d6e4b9f5a01ea1fbbc3a4597aeae5:5030:28
$mount@http：//localhost:9876/base/index.js？6c531a43b44d6e4b9f5a01ea1fbbc3a4597aeae5:10120:24
$mount@http：//localhost:9876/base/index.js？6c531a43b44d6e4b9f5a01ea1fbbc3a4597aeae5:12169:20
http://localhost:9876/base/index.js?6c531a43b44d6e4b9f5a01ea1fbbc3a4597aeae5:43223:64
attemptSync@http：//localhost:9876/absolute/Users/user/projects/my project/node_modules/jasmine core/lib/jasmine core/jasmine.js？916005cc407925f476468d61d04888d59258f5d:1950:28
run@http：//localhost:9876/absolute/Users/user/projects/my project/node_modules/jasmine core/lib/jasmine core/jasmine.js？916005cc407925f4668d61d04888d59258f5d:1938:20…

完全错误是什么？我相信这是使用vue cli支架进行的默认单元测试？只需在顶部弹出它，谢谢您的查看，可以吗发布

Hello

组件？当然，这只是默认组件，但是添加到了上面。您是否尝试过GetElementsByCassName，而不是querySelector，方法是为h1元素指定类名？

{
 "vue": "^2.2.2",
 "karma": "^1.6.0",
 "karma-jasmine": "^1.1.0",
 "jasmine-core": "^2.5.2",
}