title: Object creation issue in Django unittest
body: <p>I have a Django testcase, and I'm creating some objects in setUp:</p>
  
  <pre class="lang-py prettyprint-override"><code>OBJ_COUNT = 4
  
  class ObjTest(TestCase):
  
      def setUp(self):
          for i in range(OBJ_COUNT):
              Obj.objects.create()
  </code></pre>
  
  <p>Running this test results in 5, not 4 objects.</p>