Add tests and update overload order

Author: alippai

pandas-stubs/_libs/tslibs/offsets.pyi

@@ -45,8 +45,6 @@ class BaseOffset:
     @overload
     def __add__(self, other: date) -> Timestamp: ...
     @overload
-    def __add__(self, other: datetime) -> Timestamp: ...
-    @overload
     def __add__(self, other: BaseOffset) -> Self: ...
     @overload
     def __add__(self, other: _DatetimeT) -> _DatetimeT: ...
@@ -57,26 +55,15 @@ class BaseOffset:
     @overload
     def __radd__(self, other: date) -> Timestamp: ...
     @overload
-    def __radd__(self, other: datetime) -> Timestamp: ...
-    @overload
     def __radd__(self, other: BaseOffset) -> Self: ...
     @overload
     def __radd__(self, other: _DatetimeT) -> _DatetimeT: ...
     @overload
     def __radd__(self, other: _TimedeltaT) -> _TimedeltaT: ...
-    @overload
-    def __sub__(self, other: date) -> Timestamp: ...
-    @overload
-    def __sub__(self, other: datetime) -> Timestamp: ...
-    @overload
-    def __sub__(self, other: BaseOffset) -> Self: ...
-    @overload
     def __rsub__(self, other: npt.NDArray[np.object_]) -> npt.NDArray[np.object_]: ...
     @overload
     def __rsub__(self, other: date) -> Timestamp: ...
     @overload
-    def __rsub__(self, other: datetime) -> Timestamp: ...
-    @overload
     def __rsub__(self, other: BaseOffset) -> Self: ...
     @overload
     def __rsub__(self, other: _DatetimeT) -> _DatetimeT: ...

tests/test_timefuncs.py

@@ -664,8 +664,10 @@ def test_some_offsets() -> None:
         ),
         pd.DatetimeIndex,
     )
-    # GH 224
-    check(assert_type(dt.date.today() - Day(), dt.date), dt.date)
+    # GH 755
+    check(assert_type(dt.date.today() - Day(), pd.Timestamp), pd.Timestamp)
+    check(assert_type(dt.date.today() + Day(), pd.Timestamp), pd.Timestamp)
+    check(assert_type(Day() + dt.date.today(), pd.Timestamp), pd.Timestamp)
     # GH 235
     check(
         assert_type(