LWC的Jest测试无法从'hello.test.js找到模块'c / hello'

Question

我遵循了安装node.js和jest的所有步骤。我有下面的LWC组件，并在按如下所述运行测试时出错，我尝试调试并更改根目录/文件夹，但我找不到根本原因并解决问题。有什么建议吗？

遇到错误：

  ● Test suite failed to run

**Cannot find module 'c/hello' from 'hello.test.js'**

  1 | import { createElement } from 'lwc';
> 2 | import Hello from 'c/hello';
    | ^

import { LightningElement } from 'lwc';

export default class Hello extends LightningElement {
    greeting = 'World';
}

<template>
    <lightning-card title="Hello" icon-name="custom:custom14">
        <div class="slds-m-around_medium">
            Hello, {greeting}!
        </div>

        <c-view-source source="lwc/hello" slot="footer">
            Bind an HTML element to a component property.
        </c-view-source>
    </lightning-card>
</template>

hello.test.js

import {
  createElement
} from 'lwc';
import Hello from 'c/hello';

describe('c-hello', () => {
  afterEach(() => {
    // The jsdom instance is shared across test cases in a single file so reset the DOM
    while (document.body.firstChild) {
      document.body.removeChild(document.body.firstChild);
    }
  });

  it('displays greeting', () => {
    // Create element
    const element = createElement('c-hello', {
      is: Hello
    });
    document.body.appendChild(element);

    // Verify displayed greeting
    const div = element.shadowRoot.querySelector('div');
    expect(div.textContent).toBe('Hello, World!');
  });
});