compat: narwhals 2.23.0 (#6944)

Author: hoxbro

holoviews/tests/core/test_utils.py

@@ -44,12 +44,15 @@
     unique_array,
     wrap_tuple_streams,
 )
+from holoviews.core.util.dependencies import _no_import_version
 from holoviews.core.util.types import masked_types
 from holoviews.streams import PointerXY
 from holoviews.testing import assert_data_equal
 
 from .._deps import pa_skip, pl, pl_skip
 
+NW_VERSION = _no_import_version("narwhals")
+
 sanitize_identifier = sanitize_identifier_fn.instance()
 
 
@@ -1122,7 +1125,9 @@ def test_is_null_or_na_scalar_polars():
             [1.1, 2.2, 3.3],
             "float16",
             "f",
-            marks=pytest.mark.xfail(reason="narwhals don't support float16"),
+            marks=pytest.mark.xfail(
+                condition=NW_VERSION < (2, 23, 0), reason="narwhals don't support float16"
+            ),
         ),
         ([1.1, 2.2, 3.3], "float32", "f"),
         ([1.1, 2.2, 3.3], "float64", "f"),