title: Configuring filters with vue-test-utils
body: <p>How can we configure a component mount with a globally applied filter? I assume it would be some options passed to <a href="https://vue-test-utils.vuejs.org/api/#createlocalvue" rel="noreferrer">createLocalVue</a>, but I don't see it in the docs. </p>
  
  <p>With a global filter in use, I get the following warning in the console when running a suite:</p>
  
  <pre><code>[Vue warn]: Failed to resolve filter: filterName
  </code></pre>
  
  <p>The string at wrapper.html() includes the precomputed value, with the filter not applied, e.g.</p>
  
  <pre><code>{{ 'a string' | throughFilter }}
  </code></pre>
  
  <p>is still </p>
  
  <pre><code>'a string'
  </code></pre>
  
  <p>The filter works in the browser, and it tests on its own as a function, but I don't want to ship code with warnings. </p>