title: assertTrue with "instanceof" vs assertEquals
body: <p>I wonder why this fails:</p>
  
  <pre><code>assertEquals(Key.class, expectedKey.getClass());
  </code></pre>
  
  <p>and this does not:</p>
  
  <pre><code>assertTrue(expectedKey instanceof Key);
  </code></pre>
  
  <p>Is there a real difference between the two?</p>