extra test cases

Author: MarcoGorelli

tests/indexes/test_indexes.py

@@ -65,8 +65,10 @@ def test_index_isin() -> None:
 
     mi = pd.MultiIndex.from_arrays([[1, 2, 3]])
     check(assert_type(mi.isin([[3]]), np_1darray_bool), np_1darray_bool)
+    check(assert_type(mi.isin({iter([3])}), np_1darray_bool), np_1darray_bool)
     if TYPE_CHECKING_INVALID_USAGE:
         mi.isin({3})  # type: ignore[arg-type]  # pyright: ignore[reportArgumentType]
+        mi.isin(iter([[3]]))  # type: ignore[arg-type]  # pyright: ignore[reportArgumentType]
 
 
 def test_index_astype() -> None: