From f7524cbc488e9c061081dc01fed8280064262b5f Mon Sep 17 00:00:00 2001
From: Matthew Roeschke <10647082+mroeschke@users.noreply.github.com>
Date: Sun, 21 Sep 2025 14:08:24 -0700
Subject: [PATCH] TST: Mark more tests as pytest.mark.slow

---
 pandas/tests/frame/indexing/test_where.py                 | 1 +
 pandas/tests/frame/test_constructors.py                   | 2 --
 pandas/tests/groupby/test_cumulative.py                   | 1 -
 pandas/tests/indexes/ranges/test_setops.py                | 1 +
 pandas/tests/io/parser/common/test_float.py               | 3 +--
 pandas/tests/io/sas/test_byteswap.py                      | 2 ++
 pandas/tests/scalar/timedelta/methods/test_round.py       | 3 +--
 pandas/tests/scalar/timedelta/test_arithmetic.py          | 1 -
 pandas/tests/scalar/timedelta/test_timedelta.py           | 2 +-
 pandas/tests/scalar/timestamp/methods/test_round.py       | 1 +
 pandas/tests/scalar/timestamp/methods/test_tz_localize.py | 1 -
 pandas/tests/scalar/timestamp/test_constructors.py        | 1 -
 pandas/tests/scalar/timestamp/test_timestamp.py           | 1 +
 pandas/tests/tools/test_to_datetime.py                    | 1 -
 pandas/tests/tseries/offsets/test_offsets_properties.py   | 2 ++
 pandas/tests/tseries/offsets/test_ticks.py                | 2 ++
 pandas/tests/tslibs/test_ccalendar.py                     | 1 +
 pandas/tests/tslibs/test_parsing.py                       | 1 +
 pyproject.toml                                            | 1 -
 19 files changed, 15 insertions(+), 13 deletions(-)

diff --git a/pandas/tests/frame/indexing/test_where.py b/pandas/tests/frame/indexing/test_where.py
index cb95014d92809..01dcce34e9fd2 100644
--- a/pandas/tests/frame/indexing/test_where.py
+++ b/pandas/tests/frame/indexing/test_where.py
@@ -950,6 +950,7 @@ def test_where_nullable_invalid_na(frame_or_series, any_numeric_ea_dtype):
             obj.mask(mask, null)
 
 
+@pytest.mark.slow
 @given(data=OPTIONAL_ONE_OF_ALL)
 def test_where_inplace_casting(data):
     # GH 22051
diff --git a/pandas/tests/frame/test_constructors.py b/pandas/tests/frame/test_constructors.py
index 2426c89dbcff5..264011edb65b5 100644
--- a/pandas/tests/frame/test_constructors.py
+++ b/pandas/tests/frame/test_constructors.py
@@ -3247,7 +3247,6 @@ def test_from_out_of_bounds_ns_datetime(
         assert item.asm8.dtype == exp_dtype
         assert dtype == exp_dtype
 
-    @pytest.mark.skip_ubsan
     def test_out_of_s_bounds_datetime64(self, constructor):
         scalar = np.datetime64(np.iinfo(np.int64).max, "D")
         result = constructor(scalar)
@@ -3283,7 +3282,6 @@ def test_from_out_of_bounds_ns_timedelta(
         assert item.asm8.dtype == exp_dtype
         assert dtype == exp_dtype
 
-    @pytest.mark.skip_ubsan
     @pytest.mark.parametrize("cls", [np.datetime64, np.timedelta64])
     def test_out_of_s_bounds_timedelta64(self, constructor, cls):
         scalar = cls(np.iinfo(np.int64).max, "D")
diff --git a/pandas/tests/groupby/test_cumulative.py b/pandas/tests/groupby/test_cumulative.py
index a1ace9e6a4c0f..cca4971e930b4 100644
--- a/pandas/tests/groupby/test_cumulative.py
+++ b/pandas/tests/groupby/test_cumulative.py
@@ -60,7 +60,6 @@ def test_groupby_cumprod():
     tm.assert_series_equal(actual, expected)
 
 
-@pytest.mark.skip_ubsan
 def test_groupby_cumprod_overflow():
     # GH#37493 if we overflow we return garbage consistent with numpy
     df = DataFrame({"key": ["b"] * 4, "value": 100_000})
diff --git a/pandas/tests/indexes/ranges/test_setops.py b/pandas/tests/indexes/ranges/test_setops.py
index ac24ff828cb8f..8a38ca7baf9b9 100644
--- a/pandas/tests/indexes/ranges/test_setops.py
+++ b/pandas/tests/indexes/ranges/test_setops.py
@@ -459,6 +459,7 @@ def assert_range_or_not_is_rangelike(index):
         assert not (diff == diff[0]).all()
 
 
+@pytest.mark.slow
 @given(
     st.integers(-20, 20),
     st.integers(-20, 20),
diff --git a/pandas/tests/io/parser/common/test_float.py b/pandas/tests/io/parser/common/test_float.py
index 4e0b61577f9e7..598f397da686d 100644
--- a/pandas/tests/io/parser/common/test_float.py
+++ b/pandas/tests/io/parser/common/test_float.py
@@ -46,7 +46,7 @@ def test_scientific_no_exponent(all_parsers_all_precisions):
     [
         -617,
         -100000,
-        pytest.param(-99999999999999999, marks=pytest.mark.skip_ubsan),
+        -99999999999999999,
     ],
 )
 def test_very_negative_exponent(all_parsers_all_precisions, neg_exp):
@@ -59,7 +59,6 @@ def test_very_negative_exponent(all_parsers_all_precisions, neg_exp):
     tm.assert_frame_equal(result, expected)
 
 
-@pytest.mark.skip_ubsan
 @xfail_pyarrow  # AssertionError: Attributes of DataFrame.iloc[:, 0] are different
 @pytest.mark.parametrize("exp", [999999999999999999, -999999999999999999])
 def test_too_many_exponent_digits(all_parsers_all_precisions, exp, request):
diff --git a/pandas/tests/io/sas/test_byteswap.py b/pandas/tests/io/sas/test_byteswap.py
index 6d7f2f05d1b00..78f0d2232c4ba 100644
--- a/pandas/tests/io/sas/test_byteswap.py
+++ b/pandas/tests/io/sas/test_byteswap.py
@@ -18,6 +18,7 @@
 import pandas._testing as tm
 
 
+@pytest.mark.slow
 @given(read_offset=st.integers(0, 11), number=st.integers(min_value=0))
 @example(number=2**16, read_offset=0)
 @example(number=2**32, read_offset=0)
@@ -29,6 +30,7 @@ def test_int_byteswap(read_offset, number, int_type, should_byteswap):
     _test(number, int_type, read_offset, should_byteswap)
 
 
+@pytest.mark.slow
 @pytest.mark.filterwarnings("ignore:overflow encountered:RuntimeWarning")
 @given(read_offset=st.integers(0, 11), number=st.floats())
 @pytest.mark.parametrize("float_type", [np.float32, np.float64])
diff --git a/pandas/tests/scalar/timedelta/methods/test_round.py b/pandas/tests/scalar/timedelta/methods/test_round.py
index 96cb1c07d2b76..bc50dc9e94bac 100644
--- a/pandas/tests/scalar/timedelta/methods/test_round.py
+++ b/pandas/tests/scalar/timedelta/methods/test_round.py
@@ -63,7 +63,6 @@ def test_round_invalid(self):
             with pytest.raises(ValueError, match=msg):
                 t1.round(freq)
 
-    @pytest.mark.skip_ubsan
     def test_round_implementation_bounds(self):
         # See also: analogous test for Timestamp
         # GH#38964
@@ -89,7 +88,7 @@ def test_round_implementation_bounds(self):
         with pytest.raises(OutOfBoundsTimedelta, match=msg):
             Timedelta.max.round("s")
 
-    @pytest.mark.skip_ubsan
+    @pytest.mark.slow
     @given(val=st.integers(min_value=iNaT + 1, max_value=lib.i8max))
     @pytest.mark.parametrize(
         "method", [Timedelta.round, Timedelta.floor, Timedelta.ceil]
diff --git a/pandas/tests/scalar/timedelta/test_arithmetic.py b/pandas/tests/scalar/timedelta/test_arithmetic.py
index 2183a5851ea9c..9347784fa1ec3 100644
--- a/pandas/tests/scalar/timedelta/test_arithmetic.py
+++ b/pandas/tests/scalar/timedelta/test_arithmetic.py
@@ -969,7 +969,6 @@ def test_td_op_timedelta_timedeltalike_array(self, op, arr):
 
 
 class TestTimedeltaComparison:
-    @pytest.mark.skip_ubsan
     def test_compare_pytimedelta_bounds(self):
         # GH#49021 don't overflow on comparison with very large pytimedeltas
 
diff --git a/pandas/tests/scalar/timedelta/test_timedelta.py b/pandas/tests/scalar/timedelta/test_timedelta.py
index a2fbec77df596..da22e49b24e54 100644
--- a/pandas/tests/scalar/timedelta/test_timedelta.py
+++ b/pandas/tests/scalar/timedelta/test_timedelta.py
@@ -587,7 +587,7 @@ def test_timedelta_hash_equality(self):
         ns_td = Timedelta(1, "ns")
         assert hash(ns_td) != hash(ns_td.to_pytimedelta())
 
-    @pytest.mark.skip_ubsan
+    @pytest.mark.slow
     @pytest.mark.xfail(
         reason="pd.Timedelta violates the Python hash invariant (GH#44504).",
     )
diff --git a/pandas/tests/scalar/timestamp/methods/test_round.py b/pandas/tests/scalar/timestamp/methods/test_round.py
index 6b27e5e6c5554..3c001aab01472 100644
--- a/pandas/tests/scalar/timestamp/methods/test_round.py
+++ b/pandas/tests/scalar/timestamp/methods/test_round.py
@@ -288,6 +288,7 @@ def test_round_implementation_bounds(self):
         with pytest.raises(OutOfBoundsDatetime, match=msg):
             Timestamp.max.round("s")
 
+    @pytest.mark.slow
     @given(val=st.integers(iNaT + 1, lib.i8max))
     @pytest.mark.parametrize(
         "method", [Timestamp.round, Timestamp.floor, Timestamp.ceil]
diff --git a/pandas/tests/scalar/timestamp/methods/test_tz_localize.py b/pandas/tests/scalar/timestamp/methods/test_tz_localize.py
index cb7ac5fa6f1da..cad67a8db7eb8 100644
--- a/pandas/tests/scalar/timestamp/methods/test_tz_localize.py
+++ b/pandas/tests/scalar/timestamp/methods/test_tz_localize.py
@@ -15,7 +15,6 @@
 
 
 class TestTimestampTZLocalize:
-    @pytest.mark.skip_ubsan
     def test_tz_localize_pushes_out_of_bounds(self):
         # GH#12677
         # tz_localize that pushes away from the boundary is OK
diff --git a/pandas/tests/scalar/timestamp/test_constructors.py b/pandas/tests/scalar/timestamp/test_constructors.py
index 6398579f7444e..912875f818eb6 100644
--- a/pandas/tests/scalar/timestamp/test_constructors.py
+++ b/pandas/tests/scalar/timestamp/test_constructors.py
@@ -843,7 +843,6 @@ def test_barely_out_of_bounds(self):
         with pytest.raises(OutOfBoundsDatetime, match=msg):
             Timestamp("2262-04-11 23:47:16.854775808")
 
-    @pytest.mark.skip_ubsan
     def test_bounds_with_different_units(self):
         out_of_bounds_dates = ("1677-09-21", "2262-04-12")
 
diff --git a/pandas/tests/scalar/timestamp/test_timestamp.py b/pandas/tests/scalar/timestamp/test_timestamp.py
index 345386025b209..8e153827ad086 100644
--- a/pandas/tests/scalar/timestamp/test_timestamp.py
+++ b/pandas/tests/scalar/timestamp/test_timestamp.py
@@ -240,6 +240,7 @@ def test_dow_historic(self, date_string, expected):
         dow = ts.weekday()
         assert dow == expected
 
+    @pytest.mark.slow
     @given(
         ts=st.datetimes(),
         sign=st.sampled_from(["-", ""]),
diff --git a/pandas/tests/tools/test_to_datetime.py b/pandas/tests/tools/test_to_datetime.py
index cedd9dfe82e5a..eddfeb80967ef 100644
--- a/pandas/tests/tools/test_to_datetime.py
+++ b/pandas/tests/tools/test_to_datetime.py
@@ -1129,7 +1129,6 @@ def test_to_datetime_dt64s_out_of_ns_bounds(self, cache, dt, errors):
         assert ts.unit == "s"
         assert ts.asm8 == dt
 
-    @pytest.mark.skip_ubsan
     def test_to_datetime_dt64d_out_of_bounds(self, cache):
         dt64 = np.datetime64(np.iinfo(np.int64).max, "D")
 
diff --git a/pandas/tests/tseries/offsets/test_offsets_properties.py b/pandas/tests/tseries/offsets/test_offsets_properties.py
index 809d8f87b2c02..e0c8839d3176a 100644
--- a/pandas/tests/tseries/offsets/test_offsets_properties.py
+++ b/pandas/tests/tseries/offsets/test_offsets_properties.py
@@ -28,6 +28,7 @@
 # Offset-specific behaviour tests
 
 
+@pytest.mark.slow
 @pytest.mark.arm_slow
 @given(DATETIME_JAN_1_1900_OPTIONAL_TZ, YQM_OFFSET)
 def test_on_offset_implementations(dt, offset):
@@ -57,6 +58,7 @@ def test_on_offset_implementations(dt, offset):
     assert offset.is_on_offset(dt) == (compare == dt)
 
 
+@pytest.mark.slow
 @given(YQM_OFFSET)
 def test_shift_across_dst(offset):
     # GH#18319 check that 1) timezone is correctly normalized and
diff --git a/pandas/tests/tseries/offsets/test_ticks.py b/pandas/tests/tseries/offsets/test_ticks.py
index f1065690233af..fae4320072042 100644
--- a/pandas/tests/tseries/offsets/test_ticks.py
+++ b/pandas/tests/tseries/offsets/test_ticks.py
@@ -61,6 +61,7 @@ def test_delta_to_tick():
     assert tick == Nano(5)
 
 
+@pytest.mark.slow
 @pytest.mark.parametrize("cls", tick_classes)
 @example(n=2, m=3)
 @example(n=800, m=300)
@@ -80,6 +81,7 @@ def test_tick_add_sub(cls, n, m):
     assert left - right == expected
 
 
+@pytest.mark.slow
 @pytest.mark.arm_slow
 @pytest.mark.parametrize("cls", tick_classes)
 @example(n=2, m=3)
diff --git a/pandas/tests/tslibs/test_ccalendar.py b/pandas/tests/tslibs/test_ccalendar.py
index 8dd1bd47e4728..aeb9d3387c91a 100644
--- a/pandas/tests/tslibs/test_ccalendar.py
+++ b/pandas/tests/tslibs/test_ccalendar.py
@@ -56,6 +56,7 @@ def test_dt_correct_iso_8601_year_week_and_day(input_date_tuple, expected_iso_tu
     assert result == expected_iso_tuple
 
 
+@pytest.mark.slow
 @given(DATETIME_IN_PD_TIMESTAMP_RANGE_NO_TZ)
 def test_isocalendar(dt):
     expected = dt.isocalendar()
diff --git a/pandas/tests/tslibs/test_parsing.py b/pandas/tests/tslibs/test_parsing.py
index 72515c030757b..6c134a11cb530 100644
--- a/pandas/tests/tslibs/test_parsing.py
+++ b/pandas/tests/tslibs/test_parsing.py
@@ -388,6 +388,7 @@ def _helper_hypothesis_delimited_date(call, date_string, **kwargs):
     return msg, result
 
 
+@pytest.mark.slow
 @given(DATETIME_NO_TZ)
 @pytest.mark.parametrize("delimiter", list(" -./"))
 @pytest.mark.parametrize("dayfirst", [True, False])
diff --git a/pyproject.toml b/pyproject.toml
index a00d6e71b14e3..973857bbd1d9f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -485,7 +485,6 @@ markers = [
   "db: tests requiring a database (mysql or postgres)",
   "clipboard: mark a pd.read_clipboard test",
   "arm_slow: mark a test as slow for arm64 architecture",
-  "skip_ubsan: Tests known to fail UBSAN check",
   # TODO: someone should investigate this ...
   # these tests only fail in the wheel builder and don't fail in regular
   # ARM CI