Ember.js测试页面自动保持刷新

Question

我正在尝试从此处遵循一个示例集成测试：https：//guides.emberjs.com/release/release/testing/testing-components/（testing Action）

我的问题是，由于某种原因，测试输出会永久自动刷新？

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格不断提交，但事实并非如此，因为它只能单击一次提交。任何帮助非常感谢！

Answer 1

按照 @lux的建议写为注释；您需要进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告诉浏览器不要按照通常的方式处理事件。有关更好的解释，请参见MDN。