new_contents: '''Test cases for QTextEdit and ownership problems.'''
  
  import unittest
  from sys import getrefcount
  from PySide.QtGui import QTextEdit
  
  from helper import UsesQApplication
  
  class DontTouchReference(UsesQApplication):
      '''Check if the QTextTable returned by QTextCursor.insertTable() is not
      referenced by the QTextCursor that returns it.'''
  
      def setUp(self):
          super(DontTouchReference, self).setUp()
          self.editor = QTextEdit()
          self.cursor = self.editor.textCursor()
          self.table = self.cursor.insertTable(1, 1)
  
      def testQTextTable(self):
          # methods which return QTextTable should not increment its reference
          self.assertEqual(getrefcount(self.table), 2)
          f = self.cursor.currentFrame()
          del f
          self.assertEqual(getrefcount(self.table), 2)
          # destroying the cursor should not raise any "RuntimeError: internal
          # C++ object already deleted." when accessing the QTextTable
          del self.cursor
          self.assertEqual(getrefcount(self.table), 2)
          cell = self.table.cellAt(0, 0)
  
  if __name__ == "__main__":
      unittest.main()
  
subject: Add tests/qtgui/qtextedit_test.py