From d04c9dda00ad11749df915e9399b17a66c43f5db Mon Sep 17 00:00:00 2001
From: Matthew Roeschke <10647082+mroeschke@users.noreply.github.com>
Date: Tue, 20 Feb 2024 10:14:10 -0800
Subject: [PATCH 1/3] TST: Allow test_dti_constructor_with_non_nano_now_today
 to be flaky

---
 .../tests/indexes/datetimes/test_constructors.py   | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/pandas/tests/indexes/datetimes/test_constructors.py b/pandas/tests/indexes/datetimes/test_constructors.py
index 0756d490cd4fa..dfae4270f7804 100644
--- a/pandas/tests/indexes/datetimes/test_constructors.py
+++ b/pandas/tests/indexes/datetimes/test_constructors.py
@@ -1031,23 +1031,23 @@ def test_dti_constructor_with_non_nano_dtype(self, tz):
         result2 = DatetimeIndex(np.array(vals, dtype=object), dtype=dtype)
         tm.assert_index_equal(result2, expected)
 
-    def test_dti_constructor_with_non_nano_now_today(self):
+    def test_dti_constructor_with_non_nano_now_today(self, request):
         # GH#55756
         now = Timestamp.now()
         today = Timestamp.today()
         result = DatetimeIndex(["now", "today"], dtype="M8[s]")
         assert result.dtype == "M8[s]"
 
+        diff0 = result[0] - now.as_unit("s")
+        diff1 = result[1] - today.as_unit("s")
+        assert diff1 >= pd.Timedelta(0), f"The difference is {diff0}"
+        assert diff0 >= pd.Timedelta(0), f"The difference is {diff0}"
+
         # result may not exactly match [now, today] so we'll test it up to a tolerance.
         #  (it *may* match exactly due to rounding)
+        request.applymarker(pytest.mark.xfail(strict=False))
         tolerance = pd.Timedelta(seconds=1)
-
-        diff0 = result[0] - now.as_unit("s")
-        assert diff0 >= pd.Timedelta(0), f"The difference is {diff0}"
         assert diff0 < tolerance, f"The difference is {diff0}"
-
-        diff1 = result[1] - today.as_unit("s")
-        assert diff1 >= pd.Timedelta(0), f"The difference is {diff0}"
         assert diff1 < tolerance, f"The difference is {diff0}"
 
     def test_dti_constructor_object_float_matches_float_dtype(self):

From 2211e8edded8899fae804cd443a1b8531476db67 Mon Sep 17 00:00:00 2001
From: Matthew Roeschke <10647082+mroeschke@users.noreply.github.com>
Date: Tue, 20 Feb 2024 10:16:00 -0800
Subject: [PATCH 2/3] Add GH reference

---
 pandas/tests/indexes/datetimes/test_constructors.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pandas/tests/indexes/datetimes/test_constructors.py b/pandas/tests/indexes/datetimes/test_constructors.py
index dfae4270f7804..d744bafca5d4c 100644
--- a/pandas/tests/indexes/datetimes/test_constructors.py
+++ b/pandas/tests/indexes/datetimes/test_constructors.py
@@ -1045,6 +1045,7 @@ def test_dti_constructor_with_non_nano_now_today(self, request):
 
         # result may not exactly match [now, today] so we'll test it up to a tolerance.
         #  (it *may* match exactly due to rounding)
+        # GH 57535
         request.applymarker(pytest.mark.xfail(strict=False))
         tolerance = pd.Timedelta(seconds=1)
         assert diff0 < tolerance, f"The difference is {diff0}"

From 5ba2f1cf60624c0adf31ecd0cbb140e418d1a127 Mon Sep 17 00:00:00 2001
From: Matthew Roeschke <10647082+mroeschke@users.noreply.github.com>
Date: Tue, 20 Feb 2024 10:16:53 -0800
Subject: [PATCH 3/3] Add reason

---
 pandas/tests/indexes/datetimes/test_constructors.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pandas/tests/indexes/datetimes/test_constructors.py b/pandas/tests/indexes/datetimes/test_constructors.py
index d744bafca5d4c..009723fc42360 100644
--- a/pandas/tests/indexes/datetimes/test_constructors.py
+++ b/pandas/tests/indexes/datetimes/test_constructors.py
@@ -1046,7 +1046,11 @@ def test_dti_constructor_with_non_nano_now_today(self, request):
         # result may not exactly match [now, today] so we'll test it up to a tolerance.
         #  (it *may* match exactly due to rounding)
         # GH 57535
-        request.applymarker(pytest.mark.xfail(strict=False))
+        request.applymarker(
+            pytest.mark.xfail(
+                reason="result may not exactly match [now, today]", strict=False
+            )
+        )
         tolerance = pd.Timedelta(seconds=1)
         assert diff0 < tolerance, f"The difference is {diff0}"
         assert diff1 < tolerance, f"The difference is {diff0}"