suggestd edits

Author: jbrockmendel

pandas/tests/apply/test_frame_apply.py

@@ -653,9 +653,7 @@ def test_apply_dict(df, dicts):
 
 def test_apply_non_numpy_dtype():
     # GH 12244
-    df = DataFrame(
-        {"dt": date_range("2015-01-01", periods=3, tz="Europe/Brussels", unit="ns")}
-    )
+    df = DataFrame({"dt": date_range("2015-01-01", periods=3, tz="Europe/Brussels")})
     result = df.apply(lambda x: x)
     tm.assert_frame_equal(result, df)
 
@@ -1427,7 +1425,7 @@ def test_nuiscance_columns():
             "A": [1, 2, 3],
             "B": [1.0, 2.0, 3.0],
             "C": ["foo", "bar", "baz"],
-            "D": date_range("20130101", periods=3, unit="ns"),
+            "D": date_range("20130101", periods=3),
         }
     )
 
@@ -1437,7 +1435,7 @@ def test_nuiscance_columns():
 
     result = df.agg(["min"])
     expected = DataFrame(
-        [[1, 1.0, "bar", Timestamp("20130101").as_unit("ns")]],
+        [[1, 1.0, "bar", Timestamp("20130101")]],
         index=["min"],
         columns=df.columns,
     )

pandas/tests/indexes/datetimes/test_date_range.py

@@ -1845,9 +1845,18 @@ def test_date_range_unit_inference_tick(self):
         assert dti.unit == "ns"
 
     def test_date_range_unit_inference_dateoffset_freq(self):
-        off = DateOffset(microseconds=2_000_000)
+        start = Timestamp("2025-11-25 09:00:00").as_unit("s")
+        end = Timestamp("2025-11-25 09:00:02").as_unit("s")
 
-        start = Timestamp("2025-11-25").as_unit("ms")
-        end = Timestamp("2025-11-26").as_unit("s")
+        off = DateOffset(microseconds=2_000_000)
         dti = date_range(start, end, freq=off)
         assert dti.unit == "us"
+
+        off = DateOffset(milliseconds=2)
+        dti = date_range(start, end, freq=off)
+        assert dti.unit == "ms"
+
+        end2 = start + Timedelta(microseconds=2).as_unit("us")
+        off = DateOffset(nanoseconds=2)
+        dti = date_range(start, end2, freq=off)
+        assert dti.unit == "ns"