AppPkg/Applications/Python/Python-2.7.2/Lib/test/test_ascii_formatd.py

   1 # PyOS_ascii_formatd is deprecated and not called from anywhere in
   2 #  Python itself. So this module is the only place it gets tested.
   3 # Test that it works, and test that it's deprecated.
   4
   5 import unittest
   6 from test.test_support import check_warnings, run_unittest, import_module
   7
   8 # Skip tests if _ctypes module does not exist
   9 import_module('_ctypes')
  10
  11 from ctypes import pythonapi, create_string_buffer, sizeof, byref, c_double
  12 PyOS_ascii_formatd = pythonapi.PyOS_ascii_formatd
  13
  14
  15 class FormatDeprecationTests(unittest.TestCase):
  16
  17     def test_format_deprecation(self):
  18         buf = create_string_buffer(' ' * 100)
  19
  20         with check_warnings(('PyOS_ascii_formatd is deprecated',
  21                              DeprecationWarning)):
  22             PyOS_ascii_formatd(byref(buf), sizeof(buf), '%+.10f',
  23                                c_double(10.0))
  24             self.assertEqual(buf.value, '+10.0000000000')
  25
  26
  27 class FormatTests(unittest.TestCase):
  28     # ensure that, for the restricted set of format codes,
  29     # %-formatting returns the same values os PyOS_ascii_formatd
  30     def test_format(self):
  31         buf = create_string_buffer(' ' * 100)
  32
  33         tests = [
  34             ('%f', 100.0),
  35             ('%g', 100.0),
  36             ('%#g', 100.0),
  37             ('%#.2g', 100.0),
  38             ('%#.2g', 123.4567),
  39             ('%#.2g', 1.234567e200),
  40             ('%e', 1.234567e200),
  41             ('%e', 1.234),
  42             ('%+e', 1.234),
  43             ('%-e', 1.234),
  44             ]
  45
  46         with check_warnings(('PyOS_ascii_formatd is deprecated',
  47                              DeprecationWarning)):
  48             for format, val in tests:
  49                 PyOS_ascii_formatd(byref(buf), sizeof(buf), format,
  50                                    c_double(val))
  51                 self.assertEqual(buf.value, format % val)
  52
  53
  54 def test_main():
  55     run_unittest(FormatDeprecationTests, FormatTests)
  56
  57 if __name__ == '__main__':
  58     test_main()