Update test_deprecated_kwargs.py

Use assert_produces_warning(None) context to check whether no warning is produced.

Author: alexitkes

pandas/tests/io/json/test_deprecated_kwargs.py

@@ -32,6 +32,7 @@ def test_good_kwargs():
     argument passed as keyword.
     """
     df = pd.DataFrame({"A": [2, 4, 6], "B": [3, 6, 9]}, index=[0, 1, 2])
-    assert_frame_equal(df, read_json(df.to_json(orient="split"), orient="split"))
-    assert_frame_equal(df, read_json(df.to_json(orient="columns"), orient="columns"))
-    assert_frame_equal(df, read_json(df.to_json(orient="index"), orient="index"))
+    with tm.assert_produces_warning(None):
+        assert_frame_equal(df, read_json(df.to_json(orient="split"), orient="split"))
+        assert_frame_equal(df, read_json(df.to_json(orient="columns"), orient="columns"))
+        assert_frame_equal(df, read_json(df.to_json(orient="index"), orient="index"))