title: How to assert that input value is truthy with cypress
body: <p>I have some input</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;input /&gt;
  </code></pre>
  
  <p>How to assert that input has truthy value?</p>
  
  <p>I think it's possible with </p>
  
  <pre class="lang-js prettyprint-override"><code>cy('input').should('not.have.value', '')
  </code></pre>
  
  <p>but I think it's slightly unreliable. Or maybe not. But anyway, would be nice to know some other way to check for truthy value.</p>