Update SIP to 4.19.4

unittests/test_dtor.py

@@ -0,0 +1,28 @@
+import unittest
+from unittests import wtc
+import wx
+
+#---------------------------------------------------------------------------
+
+class dtor_Tests(wtc.WidgetTestCase):
+
+    def test_dtor(self):
+        # Test that a __dtor__ method is called when a wrapped C++ class is
+        # destroyed
+
+        class MyPanel(wx.Panel):
+            def __init__(self, parent):
+                super(MyPanel, self).__init__(parent)
+                self.Parent.dtor_called = False
+
+            def __dtor__(self):
+                self.Parent.dtor_called = True
+
+
+        panel = MyPanel(self.frame)
+        self.myYield()
+        assert not self.frame.dtor_called
+        panel.Destroy()
+        self.myYield()
+        assert self.frame.dtor_called
+