Updating implementation per reviewer recommendations.

Author: rmhowe425

pandas/tests/io/xml/test_xml.py

@@ -1370,13 +1370,14 @@ def test_stylesheet_with_etree(kml_cta_rail_lines, xsl_flatten_doc):
 @td.skip_if_no("lxml")
 @pytest.mark.parametrize("val", ["", b""])
 def test_empty_stylesheet(val):
-    from lxml.etree import XMLSyntaxError
-
+    msg = (
+        "Passing literal xml to 'read_xml' is deprecated and "
+        "will be removed in a future version. To read from a "
+        "literal string, wrap it in a 'StringIO' object."
+    )
     kml = os.path.join("data", "xml", "cta_rail_lines.kml")
 
-    with pytest.raises(
-        XMLSyntaxError, match=("Document is empty|Start tag expected, '<' not found")
-    ):
+    with pytest.raises(FutureWarning, match=msg):
         read_xml(kml, stylesheet=val)