fail

DetachHead · Nov 18, 2024 · 7f1d22e · 7f1d22e
1 parent 29b9759
commit 7f1d22e
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/packages/pyright-internal/src/tests/samples/typeNarrowingUsingBounds.py b/packages/pyright-internal/src/tests/samples/typeNarrowingUsingBounds.py
@@ -1,4 +1,4 @@
-from typing import Any, Never, assert_type, Iterable
+from typing import Any, Never, assert_type, Iterable, Iterator, MutableMapping, Reversible
 
 
 class Covariant[T]:
@@ -66,3 +66,7 @@ def unknown(self, value):
     def partially_unknown(self, value=None):
         if isinstance(value, Iterable):
             assert_type(value, Iterable[Any])
+
+def foo[KT,VT](self: MutableMapping[KT, VT]) -> Iterator[KT]:
+    assert isinstance(self, Reversible) # fail
+    return reversed(self)