title: assertRaises() in a test cases that raises multiple exceptions
body: <p>Is it possible to use assertRaises with multiple types of exceptions. Some thing like</p>
  
  <pre><code>assertRaises(RuntimeError, "error message")
  assertRaises(Exception, "exception message")
  </code></pre>
  
  <p>both these errors occur in my code at different places with the same call.</p>
  
  <p>How can I write a singel assertRaises statement to handle both. </p>
  
  <p>As you can imagine the unit test case fails when only one of the execptions is mentioned.</p>