added more testcases

Author: dannyi96

pandas/core/series.py

@@ -5573,9 +5573,8 @@ def resample(
     ) -> Resampler:
         if axis is not lib.no_default:
             warnings.warn(
-                "resample axis keyword is deprecated and will be removed in a "
-                "future version. To group on axis=1, use obj.T.resample(...) "
-                "instead",
+                "Series resample axis keyword is deprecated and will be removed in a "
+                "future version.",
                 FutureWarning,
                 stacklevel=find_stack_level(),
             )

pandas/tests/resample/test_resample_api.py

@@ -977,3 +977,33 @@ def test_args_kwargs_depr(method, raises):
         with tm.assert_produces_warning(FutureWarning, match=warn_msg):
             with pytest.raises(TypeError, match=error_msg_type):
                 func(*args, 1, 2, 3)
+
+
+def test_df_axis_param_depr():
+    np.random.seed(1234)
+    index = date_range(datetime(2005, 1, 1), datetime(2005, 1, 10), freq="D")
+    index.name = "date"
+    df = DataFrame(np.random.rand(10, 2), columns=list("AB"), index=index).T
+
+    # Deprication error when axis=1 is explicitly passed
+    warning_msg = "DataFrame.resample with axis=1 is deprecated."
+    with tm.assert_produces_warning(FutureWarning, match=warning_msg):
+        df.resample("M", axis=1)
+
+    # Deprication error when axis=0 is explicitly passed
+    df = df.T
+    warning_msg = (
+        "The 'axis' keyword in DataFrame.resample is deprecated and "
+        "will be removed in a future version."
+    )
+    with tm.assert_produces_warning(FutureWarning, match=warning_msg):
+        df.resample("M", axis=0)
+
+
+def test_series_axis_param_depr():
+    warning_msg = (
+        "Series resample axis keyword is deprecated and will be removed in a "
+        "future version."
+    )
+    with tm.assert_produces_warning(FutureWarning, match=warning_msg):
+        test_series.resample("H", axis=0)