From: Daniele Varrazzo <daniele.varrazzo@gmail.com>
Date: Thu, 7 Oct 2021 21:20:49 +0000 (+0200)
Subject: Don't generate random timestamps BC
X-Git-Tag: 3.0~14
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9807b501d355cfd20265b97c18f2d3302f155f2d;p=thirdparty%2Fpsycopg.git

Don't generate random timestamps BC

It might happen to go below datetime.datetime.min if the timezone is
involved.

Today the random data generator is having a field day...
---

diff --git a/tests/fix_faker.py b/tests/fix_faker.py
index 75f660854..63c933e73 100644
--- a/tests/fix_faker.py
+++ b/tests/fix_faker.py
@@ -346,13 +346,16 @@ class Faker:
         return self.schema_time(cls)
 
     def make_datetime(self, spec):
+        # Add a day because with timezone we might go BC
+        dtmin = dt.datetime.min + dt.timedelta(days=1)
+
         # Comparisons might get unreliable too far in the future
         # https://bugs.python.org/issue45347
-        # delta = dt.datetime.max - dt.datetime.min
+        # delta = dt.datetime.max - dtmin
         delta = dt.timedelta(days=3000 * 365)
 
         micros = randrange((delta.days + 1) * 24 * 60 * 60 * 1_000_000)
-        rv = dt.datetime.min + dt.timedelta(microseconds=micros)
+        rv = dtmin + dt.timedelta(microseconds=micros)
         if spec[1]:
             rv = rv.replace(tzinfo=self._make_tz(spec))
         return rv