title: Trying vue-test-utils-getting-started with default config and Preset Not Found when run
body: <p>I am trying to do a unit test by following <a href="https://vue-test-utils.vuejs.org/guides/#getting-started" rel="nofollow noreferrer">the official guide</a> by cloning the demo repository <code>vue-test-utils-getting-started</code>.</p>
  
  <p>Step to Reproduce</p>
  
  <ol>
  <li>npm install (only run once after cloning vue-test-utils-getting-started)</li>
  <li>Because the file is prepared, run <code>npm test</code> could see the following error</li>
  </ol>
  
  <pre><code>● Validation Error:
  
    Preset @vue/cli-plugin-unit-jest/presets/no-babel/jest-preset.js not found.
  
    Configuration Documentation:
    https://facebook.github.io/jest/docs/configuration.html
  
  </code></pre>
  
  <p>If cat the file</p>
  
  <pre><code>cat @vue/cli-plugin-unit-jest/presets/no-babel/jest-preset.js
  
  it does display the content meaning that the file does exist in the path
  </code></pre>
  
  <p>If comment out the line, it works. It seems that the mechanism to load the preset file is buggy.
  Does any one know how to load the preset correctly?</p>
  
  <pre><code>// jest.config.js
  
  module.exports = {
    // this is installed by default, but not working, many people encounters, "not found" but file exists 
    // preset: '@vue/cli-plugin-unit-jest/presets/no-babel'
  }
  </code></pre>