[pypy-svn] r49602 - pypy/dist/pypy/module/_weakref/test

[arigo at codespeak.net]

Author: arigo
Date: Mon Dec 10 16:45:07 2007
New Revision: 49602

Modified:
   pypy/dist/pypy/module/_weakref/test/test_weakref.py
Log:
A test checking the del-weakref-id interactions.
I suspect that this fails in py.test -A mode on a framework gc.


Modified: pypy/dist/pypy/module/_weakref/test/test_weakref.py
==============================================================================
--- pypy/dist/pypy/module/_weakref/test/test_weakref.py	(original)
+++ pypy/dist/pypy/module/_weakref/test/test_weakref.py	Mon Dec 10 16:45:07 2007
@@ -268,6 +268,31 @@
             a1 = w()
             assert a1 is None
 
+    def test_del_and_callback_and_id(self):
+        import gc, weakref
+        seen_del = []
+        class A(object):
+            def __del__(self):
+                seen_del.append(id(self))
+                seen_del.append(w1() is None)
+                seen_del.append(w2() is None)
+        seen_callback = []
+        def callback(r):
+            seen_callback.append(r is w2)
+            seen_callback.append(w1() is None)
+            seen_callback.append(w2() is None)
+        a = A()
+        w1 = weakref.ref(a)
+        w2 = weakref.ref(a, callback)
+        aid = id(a)
+        del a
+        for i in range(5):
+            gc.collect()
+        if seen_del:
+            assert seen_del == [aid, True, True]
+        if seen_callback:
+            assert seen_callback == [True, True, True]
+
 
 class AppTestProxy(object):
     def setup_class(cls):