https://github.com/python/cpython/commit/d2b9b6f919e92184420c8e13d078e83447ce7917
commit: d2b9b6f919e92184420c8e13d078e83447ce7917
branch: main
author: Sergey B Kirpichev <[email protected]>
committer: vstinner <[email protected]>
date: 2024-09-11T11:21:05+02:00
summary:
gh-123811: test that round() can return signed zero (#123829)
files:
M Lib/test/test_float.py
diff --git a/Lib/test/test_float.py b/Lib/test/test_float.py
index 42fc99131472c5..048bb14509064b 100644
--- a/Lib/test/test_float.py
+++ b/Lib/test/test_float.py
@@ -863,7 +863,7 @@ def test_short_repr(self):
self.assertEqual(repr(float(negs)), str(float(negs)))
@support.requires_IEEE_754
-class RoundTestCase(unittest.TestCase):
+class RoundTestCase(unittest.TestCase, FloatsAreIdenticalMixin):
def test_inf_nan(self):
self.assertRaises(OverflowError, round, INF)
@@ -893,10 +893,10 @@ def test_large_n(self):
def test_small_n(self):
for n in [-308, -309, -400, 1-2**31, -2**31, -2**31-1, -2**100]:
- self.assertEqual(round(123.456, n), 0.0)
- self.assertEqual(round(-123.456, n), -0.0)
- self.assertEqual(round(1e300, n), 0.0)
- self.assertEqual(round(1e-320, n), 0.0)
+ self.assertFloatsAreIdentical(round(123.456, n), 0.0)
+ self.assertFloatsAreIdentical(round(-123.456, n), -0.0)
+ self.assertFloatsAreIdentical(round(1e300, n), 0.0)
+ self.assertFloatsAreIdentical(round(1e-320, n), 0.0)
def test_overflow(self):
self.assertRaises(OverflowError, round, 1.6e308, -308)
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