title: How to measure and display the running time of a single test?
body: <p>I have a potentially long-running test written with <em>scalatest</em>:</p>
  
  <pre><code>test("a long running test") {
    failAfter(Span(60, Seconds)) {
      // ...
    }
  }
  </code></pre>
  
  <p>Even if the test finishes within the timeout limit, its running time can be valuable to the person who runs the test. How can I measure and display the running time of this <em>single</em> particular test in scalatest's output?</p>
  
  <p><strong>Update:</strong> Currently I measure the running time with my own function, just as in r.v's answer. I'd like to know if <em>scalatest</em> offers this functionality already.</p>