title: Why can't I use assertTrue in MATLAB?
body: <p>I am trying to run the following code in R2016a</p>
  
  <pre><code>import matlab.unittest.qualifications.Assertable;
  assertTrue(true, 'wrong');
  </code></pre>
  
  <p>But am getting this error.</p>
  
  <blockquote>
    <p>Undefined function or variable 'assertTrue'.</p>
  </blockquote>
  
  <p>I did not notice any changes in <code>assertTrue</code> of Matlab 2016a.
  I also tried unsuccessfully the import of <code>matlab.unittest.qualifications.*</code>. 
  I also tried unsuccessfully <code>testcase.assertTrue(true, 'wrong');</code>. </p>
  
  <hr>
  
  <p>How can you I use assertTrue in Matlab?</p>