title: phpspec - running same test with multiple values
body: <p>Using phpspec, is it possible to run the same test with multiple values, using annotations or similar?</p>
  
  <p>For example, say i have the following test:</p>
  
  <pre><code>public function it_should_return_sum_of_numbers_passed()
  {
     $number1 = 1;
     $number2 = 1;
  
     $expectedresult = $number1 + $number2;
  
     $this-&gt;add($number1, $number2)-&gt;shouldReturn($expectedResult);
  }
  </code></pre>
  
  <p>Thats fine.  But it only tests a single set of parameters.  What about passing -1 and 1, -1 and -2 etc etc.  Fair enough this is a massively simplified scenario but it would mean having to create a new method for each edge case.</p>