Replace "requires" class decorator with a simple if (for Python 2.5 compatibility)

Reviewed-by: Lauro Moura <lauro.neto@openbossa.org>
Reviewed-by: Bruno Araujo <bruno.araujo@openbossa.org>

tests/signals/lambda_gui_test.py

@@ -7,32 +7,31 @@ from PySide.QtCore import QObject, SIGNAL
 
 try:
     from PySide.QtGui import QSpinBox, QPushButton
+    hasQtGui = True
 except ImportError:
-    pass
+    hasQtGui = False
 
 from helper import UsesQApplication
-from helper import decorators
 
+if hasQtGui:
+    class QtGuiSigLambda(UsesQApplication):
 
-@decorators.requires('PySide.QtGui')
-class QtGuiSigLambda(UsesQApplication):
+        def testButton(self):
+            #Connecting a lambda to a QPushButton.clicked()
+            obj = QPushButton('label')
+            QObject.connect(obj, SIGNAL('clicked()'),
+                            lambda: setattr(obj, 'called', True))
+            obj.click()
+            self.assert_(obj.called)
 
-    def testButton(self):
-        #Connecting a lambda to a QPushButton.clicked()
-        obj = QPushButton('label')
-        QObject.connect(obj, SIGNAL('clicked()'),
-                        lambda: setattr(obj, 'called', True))
-        obj.click()
-        self.assert_(obj.called)
-
-    def testSpinButton(self):
-        #Connecting a lambda to a QPushButton.clicked()
-        obj = QSpinBox()
-        arg = 444
-        QObject.connect(obj, SIGNAL('valueChanged(int)'),
-                        lambda x: setattr(obj, 'arg', 444))
-        obj.setValue(444)
-        self.assertEqual(obj.arg, arg)
+        def testSpinButton(self):
+            #Connecting a lambda to a QPushButton.clicked()
+            obj = QSpinBox()
+            arg = 444
+            QObject.connect(obj, SIGNAL('valueChanged(int)'),
+                            lambda x: setattr(obj, 'arg', 444))
+            obj.setValue(444)
+            self.assertEqual(obj.arg, arg)
 
 if __name__ == '__main__':
     unittest.main()