change test_groupby_resample_on_api_with_getitem

Author: aram-cedarwood

pandas/tests/resample/test_resampler_grouper.py

@@ -139,7 +139,8 @@ def test_getitem_multiple():
 def test_groupby_resample_on_api_with_getitem():
     # GH 17813
     df = DataFrame(
-        {"id": list("aabbb"), "date": date_range("1-1-2016", periods=5), "data": 1}
+        {"id": list("aabbb"), "date": date_range("1-1-2016", periods=5), "data": 1},
+        index=list("xyzab"),
     )
     exp = df.set_index("date").groupby("id").resample("2D")["data"].sum()
     result = df.groupby("id").resample("2D", on="date")["data"].sum()