Added all original pyside unit tests to the shiboken version.

tests/qtgui/qpushbutton_test.py

@@ -0,0 +1,30 @@
+import unittest
+
+from helper import UsesQApplication
+from PySide.QtGui import QPushButton, QMenu, QWidget
+from PySide.QtCore import QTimer
+
+class MyWidget(QWidget):
+    def __init__(self):
+        QWidget.__init__(self)
+
+        m = QMenu(self)
+        b = QPushButton("Hello", self)
+        b.setMenu(m)
+
+
+class QPushButtonTest(UsesQApplication):
+    def createMenu(self, button):
+        m = QMenu()
+        button.setMenu(m)
+
+    def testSetMenu(self):
+        w = MyWidget()
+        w.show()
+
+        timer = QTimer.singleShot(100, self.app.quit)
+        self.app.exec_()
+
+if __name__ == '__main__':
+    unittest.main()
+