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update test_cmath.py from cpython 3.11.2 #4758

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Merged
merged 1 commit into from
Mar 25, 2023
Merged

update test_cmath.py from cpython 3.11.2 #4758

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11 changes: 6 additions & 5 deletions Lib/test/test_cmath.py
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
from test.support import requires_IEEE_754, cpython_only
from test.support import requires_IEEE_754, cpython_only, import_helper
from test.test_math import parse_testfile, test_file
import test.test_math as test_math
import unittest
Expand Down Expand Up @@ -60,7 +60,7 @@ class CMathTests(unittest.TestCase):
test_functions.append(lambda x : cmath.log(14.-27j, x))

def setUp(self):
self.test_values = open(test_file)
self.test_values = open(test_file, encoding="utf-8")

def tearDown(self):
self.test_values.close()
Expand Down Expand Up @@ -460,13 +460,13 @@ def test_polar(self):
@cpython_only
def test_polar_errno(self):
# Issue #24489: check a previously set C errno doesn't disturb polar()
from _testcapi import set_errno
_testcapi = import_helper.import_module('_testcapi')
def polar_with_errno_set(z):
set_errno(11)
_testcapi.set_errno(11)
try:
return polar(z)
finally:
set_errno(0)
_testcapi.set_errno(0)
self.check_polar(polar_with_errno_set)

def test_phase(self):
Expand Down Expand Up @@ -534,6 +534,7 @@ def test_abs(self):
self.assertEqual(abs(complex(INF, NAN)), INF)
self.assertTrue(math.isnan(abs(complex(NAN, NAN))))


@requires_IEEE_754
def test_abs_overflows(self):
# result overflows
Expand Down