title: Show exhaustive information for passed tests in pytest
body: <p>When a test fails, there's an output indicating the context of the test, e.g.</p>
  
  <pre><code>=================================== FAILURES ===================================
  ______________________________ Test.test_sum_even ______________________________
  
  numbers = [2, 4, 6]
  
      @staticmethod
      def test_sum_even(numbers):
          assert sum(numbers) % 2 == 0
  &gt;       assert False
  E       assert False
  
  test_preprocessing.py:52: AssertionError
  </code></pre>
  
  <p>What if I want the same thing for passed tests as well? so that I can have a quick check on the parameters that get passed to the tests are correct?</p>
  
  <p>I tried command line options line <code>--full-trace</code>, <code>-l</code>, <code>--tb long</code>, and <code>-rpP</code>, but none of them works.</p>
  
  <p>Any idea?</p>