Ember.js 测试页面一直自动刷新

Question

我正在尝试从这里开始进行示例集成测试：https://guides.emberjs.com/release/testing/testing-components/（测试操作）

我的问题是测试输出出于某种原因一直自动刷新？

测试代码：

test('Can handle submit action', async function (assert) {
    /*
    * THIS TEST HAS PROBLEMS
    * THE PAGE CONSTANTLY REFRESHES FOR THIS TEST, NO IDEA WHY, NEED TO INVESTIGATE
    */
    assert.expect(1);

    // test double for the external action
    this.set('externalAction', (actual) => {
      const expected = {inputValue: 'test'};
      assert.deepEqual(actual, expected, 'submitted value is passed to external action');
    });

    await render(hbs`{{user-form inputValue="test" saveAction=(action externalAction)}}`);

    // click the button to submit the form
    await click('#submitButton');
  });

Component.js:

import Component from '@ember/component';
import {computed} from '@ember/object';

export default Component.extend({
  inputValue: '',
  submitText: 'Save',
  inputIsValid: computed('inputValue', function () {
    return this.inputValue.length > 3;
  }),

  actions: {
    save(inputValue) {
      if (this.inputIsValid) {
        this.saveAction(inputValue); // pass action handling to route that uses component
      }
    }
  }
});

组件模板：

<br>
<br>
<form onsubmit={{action "save" inputValue}}>
    {{#unless inputIsValid}}
      <div style="color: red" class='validationMessage'>
        Hey it is not valid!
      </div>
    {{/unless}}

    <label id="inputLabel">{{inputLabel}}</label>
    {{input type="text" id="input" placeholder=inputPlaceholder value=inputValue class="form-control"}}
    <br>
    <button type="submit" id="submitButton" class="btn btn-primary">{{submitText}}</button>
</form>
{{outlet}}

我认为这可能是因为模板中的表单一直在提交，但事实并非如此，因为它应该只点击提交一次。非常感谢任何帮助！

Answer 1

按照@Lux 的建议写成评论；您需要执行以下操作以防止表单提交重新加载页面：

save(inputValue, event) {
  event.preventDefault()
  if (this.inputIsValid) {
    this.saveAction(inputValue); // pass action handling to route that uses component
  }
}

您收到 event 作为最后一个参数，并调用 preventDefault 告诉浏览器不要像往常一样处理该事件。请参阅 MDN 以获得更好的解释。

Ember.js 测试页面一直自动刷新

Ember.js test page keeps refreshing automatically

javascript

unit-testing

ember.js