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# PyOS_ascii_formatd is deprecated and not called from anywhere in
# Python itself. So this module is the only place it gets tested.
# Test that it works, and test that it's deprecated.
import unittest
from test.test_support import check_warnings, run_unittest, import_module
# Skip tests if _ctypes module does not exist
import_module('_ctypes')
from ctypes import pythonapi, create_string_buffer, sizeof, byref, c_double
PyOS_ascii_formatd = pythonapi.PyOS_ascii_formatd
class FormatDeprecationTests(unittest.TestCase):
def test_format_deprecation(self):
buf = create_string_buffer(' ' * 100)
with check_warnings(('PyOS_ascii_formatd is deprecated',
DeprecationWarning)):
PyOS_ascii_formatd(byref(buf), sizeof(buf), '%+.10f',
c_double(10.0))
self.assertEqual(buf.value, '+10.0000000000')
class FormatTests(unittest.TestCase):
# ensure that, for the restricted set of format codes,
# %-formatting returns the same values os PyOS_ascii_formatd
def test_format(self):
buf = create_string_buffer(' ' * 100)
tests = [
('%f', 100.0),
('%g', 100.0),
('%#g', 100.0),
('%#.2g', 100.0),
('%#.2g', 123.4567),
('%#.2g', 1.234567e200),
('%e', 1.234567e200),
('%e', 1.234),
('%+e', 1.234),
('%-e', 1.234),
]
with check_warnings(('PyOS_ascii_formatd is deprecated',
DeprecationWarning)):
for format, val in tests:
PyOS_ascii_formatd(byref(buf), sizeof(buf), format,
c_double(val))
self.assertEqual(buf.value, format % val)
def test_main():
run_unittest(FormatDeprecationTests, FormatTests)
if __name__ == '__main__':
test_main()