Created unit test for cyclic dependency.

Reviewer: Hugo Parente <hugo.lima@openbossa.org>
          Luciano Wolf <luciano.wolf@openbossa.org>

1 files changed, 104 insertions, 0 deletions

diff --git a/tests/samplebinding/cyclic_test.py b/tests/samplebinding/cyclic_test.py
new file mode 100644
index 000000000..bf265267d
--- /dev/null
+++ b/tests/samplebinding/cyclic_test.py
@@ -0,0 +1,104 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# This file is part of the Shiboken Python Bindings Generator project.
+#
+# Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+#
+# Contact: PySide team <contact@pyside.org>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public License
+# version 2.1 as published by the Free Software Foundation. Please
+# review the following information to ensure the GNU Lesser General
+# Public License version 2.1 requirements will be met:
+# http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+# #
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+# 02110-1301 USA
+
+import unittest
+from sample import ObjectType
+from sample import ObjectView
+from sample import ObjectModel
+
+
+
+class ObjTest(unittest.TestCase):
+
+    def test_cyclic_dependency_withParent(self):
+        """Create 2 objects with a cyclic dependency, so that they can
+        only be removed by the garbage collector, and then invoke the
+        garbage collector in a different thread.
+        """
+        import gc
+
+        class CyclicChildObject(ObjectType):
+            def __init__(self, parent):
+                super(CyclicChildObject, self).__init__(parent)
+                self._parent = parent
+
+        class CyclicObject(ObjectType):
+            def __init__(self):
+                super(CyclicObject, self).__init__()
+                CyclicChildObject(self)
+
+        # turn off automatic garbage collection, to be able to trigger it
+        # at the 'right' time
+        gc.disable()
+        alive = lambda :sum(isinstance(o, CyclicObject) for o in gc.get_objects() )
+
+        #
+        # first proof that the wizard is only destructed by the garbage
+        # collector
+        #
+        cycle = CyclicObject()
+        self.assertTrue(alive())
+        del cycle
+        self.assertTrue(alive())
+        gc.collect()
+        self.assertFalse(alive())
+
+    def test_cyclic_dependency_withKeepRef(self):
+        """Create 2 objects with a cyclic dependency, so that they can
+        only be removed by the garbage collector, and then invoke the
+        garbage collector in a different thread.
+        """
+        import gc
+
+        class CyclicChildObject(ObjectView):
+            def __init__(self, model):
+                super(CyclicChildObject, self).__init__(None)
+                self.setModel(model)
+
+        class CyclicObject(ObjectModel):
+            def __init__(self):
+                super(CyclicObject, self).__init__()
+                self._view = CyclicChildObject(self)
+
+        # turn off automatic garbage collection, to be able to trigger it
+        # at the 'right' time
+        gc.disable()
+        alive = lambda :sum(isinstance(o, CyclicObject) for o in gc.get_objects() )
+
+        #
+        # first proof that the wizard is only destructed by the garbage
+        # collector
+        #
+        cycle = CyclicObject()
+        self.assertTrue(alive())
+        del cycle
+        self.assertTrue(alive())
+        gc.collect()
+        self.assertFalse(alive())
+
+if __name__ == '__main__':
+    unittest.main()
+