Created new unittest model.

Separete unittest for module.
Only run unittest for compiled modules.

Reviewer: Marcelo Lira <marcelo.lira@openbossa.org>,
          Luciano Wolf <luciano.wolf@openbossa.org>

tests/QtGui/qtextedit_test.py

@@ -0,0 +1,32 @@
+'''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()