Use NPY_PROMOTION_STATE environment variable

Author: lysnikolaou

pandas/tests/series/indexing/test_setitem.py

@@ -4,13 +4,15 @@
     datetime,
 )
 from decimal import Decimal
+import os
 
 import numpy as np
 import pytest
 
 from pandas._config import using_string_dtype
 
 from pandas.compat import HAS_PYARROW
+from pandas.compat.numpy import np_version_gte1p24
 from pandas.errors import IndexingError
 
 from pandas.core.dtypes.common import is_list_like
@@ -1443,6 +1445,13 @@ def obj(self):
             np.float32,
             False,
             marks=pytest.mark.xfail(
+                (
+                    not np_version_gte1p24
+                    or (
+                        np_version_gte1p24
+                        and os.environ.get("NPY_PROMOTION_STATE", "weak") != "weak"
+                    )
+                ),
                 reason="np.float32(1.1) ends up as 1.100000023841858, so "
                 "np_can_hold_element raises and we cast to float64",
             ),