test: fix overflow in faker datetime handling

Causes at least test_adapt::test_random to fail sometimes.

diff --git a/tests/fix_faker.py b/tests/fix_faker.py
index 905b6ad4a845163950f11b522b036dd73b1a966c..cd6511f7d8330b4f30c36ee7c6e437fce4b0cd24 100644 (file)
--- a/tests/fix_faker.py
+++ b/tests/fix_faker.py
@@ -334,10 +334,10 @@ class Faker:
         return self.schema_time(cls)
 
     def make_datetime(self, spec):
-        # Add a day because with timezone we might go BC
+        # Add/subtract a day because with timezone we might overflow
         dtmin = dt.datetime.min + dt.timedelta(days=1)
-        delta = dt.datetime.max - dtmin
-        micros = randrange((delta.days + 1) * 24 * 60 * 60 * 1_000_000)
+        delta = dt.datetime.max - dt.timedelta(days=1) - dtmin
+        micros = randrange(int(delta.total_seconds() * 1_000_000))
         rv = dtmin + dt.timedelta(microseconds=micros)
         if spec[1]:
             rv = rv.replace(tzinfo=self._make_tz(spec))