[Python-checkins] r72098 - python/branches/py3k/Lib/test/test_ascii_formatd.py
eric.smith
python-checkins at python.org
Wed Apr 29 14:34:19 CEST 2009
Author: eric.smith
Date: Wed Apr 29 14:34:19 2009
New Revision: 72098
Log:
Added test that didn't make it in an svnmerge.
Added:
python/branches/py3k/Lib/test/test_ascii_formatd.py
Added: python/branches/py3k/Lib/test/test_ascii_formatd.py
==============================================================================
--- (empty file)
+++ python/branches/py3k/Lib/test/test_ascii_formatd.py Wed Apr 29 14:34:19 2009
@@ -0,0 +1,62 @@
+# 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.support import check_warnings, run_unittest, cpython_only
+
+class FormatDeprecationTests(unittest.TestCase):
+
+ @cpython_only
+ def testFormatDeprecation(self):
+ # delay importing ctypes until we know we're in CPython
+ from ctypes import (pythonapi, create_string_buffer, sizeof, byref,
+ c_double)
+ PyOS_ascii_formatd = pythonapi.PyOS_ascii_formatd
+ buf = create_string_buffer(100)
+
+ with check_warnings() as w:
+ PyOS_ascii_formatd(byref(buf), sizeof(buf), b'%+.10f',
+ c_double(10.0))
+ self.assertEqual(buf.value, b'+10.0000000000')
+
+ self.assertEqual(str(w.message), 'PyOS_ascii_formatd is deprecated, '
+ 'use PyOS_double_to_string instead')
+
+class FormatTests(unittest.TestCase):
+ # ensure that, for the restricted set of format codes,
+ # %-formatting returns the same values os PyOS_ascii_formatd
+ @cpython_only
+ def testFormat(self):
+ # delay importing ctypes until we know we're in CPython
+ from ctypes import (pythonapi, create_string_buffer, sizeof, byref,
+ c_double)
+ PyOS_ascii_formatd = pythonapi.PyOS_ascii_formatd
+ 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():
+ for format, val in tests:
+ PyOS_ascii_formatd(byref(buf), sizeof(buf),
+ bytes(format, 'ascii'),
+ c_double(val))
+ self.assertEqual(buf.value, bytes(format % val, 'ascii'))
+
+
+def test_main():
+ run_unittest(FormatDeprecationTests, FormatTests)
+
+if __name__ == '__main__':
+ test_main()
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