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6fdd3dcb6a
This was originally suggested by Guido, discussed on the stdlib-sig mailing list, and given the OK by Guido directly to me. What this change essentially means is that Python has taken a policy of silencing warnings that are only of interest to developers by default. This should prevent users from seeing warnings which are triggered by an application being run against a new interpreter before the app developer has a chance to update their code. Closes issue #7319. Thanks to Antoine Pitrou, Ezio Melotti, and Brian Curtin for helping with the issue.
63 lines
2.1 KiB
Python
63 lines
2.1 KiB
Python
# PyOS_ascii_formatd is deprecated and not called from anywhere in
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# Python itself. So this module is the only place it gets tested.
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# Test that it works, and test that it's deprecated.
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import unittest
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from test_support import check_warnings, run_unittest, cpython_only
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import warnings
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class FormatDeprecationTests(unittest.TestCase):
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@cpython_only
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def testFormatDeprecation(self):
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# delay importing ctypes until we know we're in CPython
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from ctypes import (pythonapi, create_string_buffer, sizeof, byref,
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c_double)
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PyOS_ascii_formatd = pythonapi.PyOS_ascii_formatd
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buf = create_string_buffer(' ' * 100)
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with check_warnings() as w:
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warnings.simplefilter('default')
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PyOS_ascii_formatd(byref(buf), sizeof(buf), '%+.10f',
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c_double(10.0))
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self.assertEqual(buf.value, '+10.0000000000')
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self.assertEqual(w.category, DeprecationWarning)
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class FormatTests(unittest.TestCase):
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# ensure that, for the restricted set of format codes,
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# %-formatting returns the same values os PyOS_ascii_formatd
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@cpython_only
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def testFormat(self):
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# delay importing ctypes until we know we're in CPython
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from ctypes import (pythonapi, create_string_buffer, sizeof, byref,
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c_double)
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PyOS_ascii_formatd = pythonapi.PyOS_ascii_formatd
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buf = create_string_buffer(' ' * 100)
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tests = [
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('%f', 100.0),
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('%g', 100.0),
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('%#g', 100.0),
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('%#.2g', 100.0),
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('%#.2g', 123.4567),
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('%#.2g', 1.234567e200),
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('%e', 1.234567e200),
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('%e', 1.234),
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('%+e', 1.234),
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('%-e', 1.234),
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]
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with check_warnings():
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for format, val in tests:
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PyOS_ascii_formatd(byref(buf), sizeof(buf), format,
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c_double(val))
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self.assertEqual(buf.value, format % val)
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def test_main():
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run_unittest(FormatDeprecationTests, FormatTests)
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if __name__ == '__main__':
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test_main()
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