1 files changed, 15 insertions, 0 deletions
diff --git a/Lib/test/test_memoryview.py b/Lib/test/test_memoryview.py
index 8809930acb..5a33d035a1 100644
--- a/Lib/test/test_memoryview.py
+++ b/Lib/test/test_memoryview.py
@@ -336,6 +336,21 @@ class AbstractMemoryTests:
         m = self._view(b)
         self.assertRaises(ValueError, hash, m)
 
+    def test_weakref(self):
+        # Check memoryviews are weakrefable
+        for tp in self._types:
+            b = tp(self._source)
+            m = self._view(b)
+            L = []
+            def callback(wr, b=b):
+                L.append(b)
+            wr = weakref.ref(m, callback)
+            self.assertIs(wr(), m)
+            del m
+            test.support.gc_collect()
+            self.assertIs(wr(), None)
+            self.assertIs(L[0], b)
+
 # Variations on source objects for the buffer: bytes-like objects, then arrays
 # with itemsize > 1.
 # NOTE: support for multi-dimensional objects is unimplemented.