TST: fix deprecation test

Author: hasB4K

doc/source/whatsnew/v1.1.0.rst

@@ -145,7 +145,7 @@ Small example of the use of ``origin``:
     ts = pd.Series(np.arange(len(rng)) * 3, index=rng)
     ts
 
-Resample with the default behavior 'start_day' (origin is 2000-10-01 00:00:00):
+Resample with the default behavior ``'start_day'`` (origin is ``2000-10-01 00:00:00``):
 
 .. ipython:: python
 

pandas/tests/resample/test_deprecated.py

@@ -56,8 +56,9 @@ def test_deprecating_on_loffset_and_base():
     with tm.assert_produces_warning(FutureWarning):
         df.resample("3T", loffset="0s").sum()
     msg = "'offset' and 'base' cannot be present at the same time"
-    with pytest.raises(ValueError, match=msg):
-        df.groupby("a").resample("3T", base=0, offset=0).sum()
+    with tm.assert_produces_warning(FutureWarning):
+        with pytest.raises(ValueError, match=msg):
+            df.groupby("a").resample("3T", base=0, offset=0).sum()
 
 
 @all_ts