Added test for Python written models returning new objects without keeping reference to them.

Reviewed by Lauro Moura <lauro.neto@openbossa.org>
eviewed by Luciano Wolf <luciano.wolf@openbossa.org>

tests/pysidetest/modelview_test.py

@@ -0,0 +1,51 @@
+#!/usr/bin/python
+
+import unittest
+from testbinding import TestView
+from PySide.QtCore import QAbstractListModel, QObject, QModelIndex
+
+'''Tests model/view relationship.'''
+
+object_name = 'test object'
+
+class MyObject(QObject):
+    pass
+
+class ListModelKeepsReference(QAbstractListModel):
+    def rowCount(self, parent=QModelIndex()):
+        return 1
+
+    def data(self, index, role):
+        self.obj = MyObject()
+        self.obj.setObjectName(object_name)
+        return self.obj
+
+class ListModelDoesntKeepsReference(QAbstractListModel):
+    def rowCount(self, parent=QModelIndex()):
+        return 1
+
+    def data(self, index, role):
+        obj = MyObject()
+        obj.setObjectName(object_name)
+        return obj
+
+class ModelViewTest(unittest.TestCase):
+
+    def testListModelKeepsReference(self):
+        model = ListModelKeepsReference()
+        view = TestView(model)
+        obj = view.getData()
+        self.assertEqual(type(obj), MyObject)
+        self.assertEqual(obj.objectName(), object_name)
+
+    def testListModelDoesntKeepsReference(self):
+        model = ListModelDoesntKeepsReference()
+        view = TestView(model)
+        obj = view.getData()
+        self.assertEqual(type(obj), MyObject)
+        self.assertEqual(obj.objectName(), object_name)
+
+
+if __name__ == '__main__':
+    unittest.main()
+