Stop signal/slot connection if is impossible to register that on object.

Created unit test for bug #442, #437.
Fixes bug #442.

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

tests/QtDeclarative/CMakeLists.txt

@@ -1,2 +1,3 @@
 PYSIDE_TEST(qdeclarativenetwork_test.py FALSE)
 PYSIDE_TEST(qdeclarativeview_test.py FALSE)
+PYSIDE_TEST(connect_python_qml.py FALSE)

tests/QtDeclarative/connect_python_qml.py

@@ -0,0 +1,30 @@
+'''Test case for bug #442'''
+
+from PySide import QtCore, QtGui, QtDeclarative
+from helper import adjust_filename, TimedQApplication
+import unittest
+
+class TestConnectionWithInvalidSignature(TimedQApplication):
+    def onButtonClicked(self):
+        self.buttonClicked = True
+        self.app.quit()
+
+    def onButtonFailClicked(self):
+        pass
+
+    def testFailConnection(self):
+        self.buttonClicked = False
+        self.buttonFailClicked = False
+        view = QtDeclarative.QDeclarativeView()
+        view.setSource(QtCore.QUrl(adjust_filename('connect_python_qml.qml', __file__)))
+        root = view.rootObject()
+        button = root.findChild(QtCore.QObject, "buttonMouseArea")
+        self.assertRaises(TypeError, QtCore.QObject.connect, [button,QtCore.SIGNAL('clicked()'), self.onButtonFailClicked])
+        button.clicked.connect(self.onButtonClicked)
+        button.clicked.emit()
+        view.show()
+        self.app.exec_()
+        self.assert_(self.buttonClicked)
+
+if __name__ == '__main__':
+    unittest.main()

tests/QtDeclarative/connect_python_qml.qml

@@ -0,0 +1,20 @@
+import Qt 4.7
+
+Rectangle {
+    id: page
+    width: 500; height: 200
+    color: "lightgray"
+
+    Rectangle {
+	id: button
+	width: 150; height: 40
+	color: "darkgray"
+	anchors.horizontalCenter: page.horizontalCenter
+	y: 150
+	MouseArea {
+	    id: buttonMouseArea
+	    objectName: "buttonMouseArea"
+	    anchors.fill: parent
+	}
+    }
+}