mirror of
https://github.com/python/cpython.git
synced 2025-07-25 20:24:11 +00:00
99170a5dbf
svn+ssh://pythondev@svn.python.org/python/trunk ........ r59544 | raymond.hettinger | 2007-12-18 01:13:45 +0100 (Tue, 18 Dec 2007) | 1 line Add more namedtuple() test cases. Neaten the code and comments. ........ r59545 | christian.heimes | 2007-12-18 04:38:03 +0100 (Tue, 18 Dec 2007) | 3 lines Fixed for #1601: IDLE not working correctly on Windows (Py30a2/IDLE30a1) Amaury's ideas works great. Should we build the Python core with WINVER=0x0500 and _WIN32_WINNT=0x0500, too? ........ r59546 | christian.heimes | 2007-12-18 10:00:13 +0100 (Tue, 18 Dec 2007) | 1 line Make it a bit easier to test Tcl/Tk and idle from a build dir. ........ r59547 | christian.heimes | 2007-12-18 10:12:10 +0100 (Tue, 18 Dec 2007) | 1 line Removed several unused files from the PCbuild9 directory. They are relics from the past. ........ r59548 | raymond.hettinger | 2007-12-18 19:26:18 +0100 (Tue, 18 Dec 2007) | 29 lines Speed-up dictionary constructor by about 10%. New opcode, STORE_MAP saves the compiler from awkward stack manipulations and specializes for dicts using PyDict_SetItem instead of PyObject_SetItem. Old disassembly: 0 BUILD_MAP 0 3 DUP_TOP 4 LOAD_CONST 1 (1) 7 ROT_TWO 8 LOAD_CONST 2 ('x') 11 STORE_SUBSCR 12 DUP_TOP 13 LOAD_CONST 3 (2) 16 ROT_TWO 17 LOAD_CONST 4 ('y') 20 STORE_SUBSCR New disassembly: 0 BUILD_MAP 0 3 LOAD_CONST 1 (1) 6 LOAD_CONST 2 ('x') 9 STORE_MAP 10 LOAD_CONST 3 (2) 13 LOAD_CONST 4 ('y') 16 STORE_MAP ........ r59549 | thomas.heller | 2007-12-18 20:00:34 +0100 (Tue, 18 Dec 2007) | 2 lines Issue #1642: Fix segfault in ctypes when trying to delete attributes. ........ r59551 | guido.van.rossum | 2007-12-18 21:10:42 +0100 (Tue, 18 Dec 2007) | 2 lines Issue #1645 by Alberto Bertogli. Fix a comment. ........ r59553 | raymond.hettinger | 2007-12-18 22:24:09 +0100 (Tue, 18 Dec 2007) | 12 lines Give meaning to the oparg for BUILD_MAP: estimated size of the dictionary. Allows dictionaries to be pre-sized (upto 255 elements) saving time lost to re-sizes with their attendant mallocs and re-insertions. Has zero effect on small dictionaries (5 elements or fewer), a slight benefit for dicts upto 22 elements (because they had to resize once anyway), and more benefit for dicts upto 255 elements (saving multiple resizes during the build-up and reducing the number of collisions on the first insertions). Beyond 255 elements, there is no addional benefit. ........ r59554 | christian.heimes | 2007-12-18 22:56:09 +0100 (Tue, 18 Dec 2007) | 1 line Fixed #1649: IDLE error: dictionary changed size during iteration ........ r59557 | raymond.hettinger | 2007-12-18 23:21:27 +0100 (Tue, 18 Dec 2007) | 1 line Simplify and speedup _asdict() for named tuples. ........ r59558 | christian.heimes | 2007-12-19 00:22:54 +0100 (Wed, 19 Dec 2007) | 3 lines Applied patch #1635: Float patch for inf and nan on Windows (and other platforms). The patch unifies float("inf") and repr(float("inf")) on all platforms. ........ r59559 | raymond.hettinger | 2007-12-19 00:51:15 +0100 (Wed, 19 Dec 2007) | 1 line Users demand iterable input for named tuples. The author capitulates. ........ r59560 | raymond.hettinger | 2007-12-19 01:21:06 +0100 (Wed, 19 Dec 2007) | 1 line Beef-up tests for dict literals ........ r59561 | raymond.hettinger | 2007-12-19 01:27:21 +0100 (Wed, 19 Dec 2007) | 1 line Zap a duplicate line ........
244 lines
9.1 KiB
Python
244 lines
9.1 KiB
Python
|
|
import unittest, struct
|
|
import os
|
|
from test import test_support
|
|
|
|
def isinf(x):
|
|
return x * 0.5 == x
|
|
|
|
def isnan(x):
|
|
return x != x
|
|
|
|
class FormatFunctionsTestCase(unittest.TestCase):
|
|
|
|
def setUp(self):
|
|
self.save_formats = {'double':float.__getformat__('double'),
|
|
'float':float.__getformat__('float')}
|
|
|
|
def tearDown(self):
|
|
float.__setformat__('double', self.save_formats['double'])
|
|
float.__setformat__('float', self.save_formats['float'])
|
|
|
|
def test_getformat(self):
|
|
self.assert_(float.__getformat__('double') in
|
|
['unknown', 'IEEE, big-endian', 'IEEE, little-endian'])
|
|
self.assert_(float.__getformat__('float') in
|
|
['unknown', 'IEEE, big-endian', 'IEEE, little-endian'])
|
|
self.assertRaises(ValueError, float.__getformat__, 'chicken')
|
|
self.assertRaises(TypeError, float.__getformat__, 1)
|
|
|
|
def test_setformat(self):
|
|
for t in 'double', 'float':
|
|
float.__setformat__(t, 'unknown')
|
|
if self.save_formats[t] == 'IEEE, big-endian':
|
|
self.assertRaises(ValueError, float.__setformat__,
|
|
t, 'IEEE, little-endian')
|
|
elif self.save_formats[t] == 'IEEE, little-endian':
|
|
self.assertRaises(ValueError, float.__setformat__,
|
|
t, 'IEEE, big-endian')
|
|
else:
|
|
self.assertRaises(ValueError, float.__setformat__,
|
|
t, 'IEEE, big-endian')
|
|
self.assertRaises(ValueError, float.__setformat__,
|
|
t, 'IEEE, little-endian')
|
|
self.assertRaises(ValueError, float.__setformat__,
|
|
t, 'chicken')
|
|
self.assertRaises(ValueError, float.__setformat__,
|
|
'chicken', 'unknown')
|
|
|
|
BE_DOUBLE_INF = b'\x7f\xf0\x00\x00\x00\x00\x00\x00'
|
|
LE_DOUBLE_INF = bytes(reversed(BE_DOUBLE_INF))
|
|
BE_DOUBLE_NAN = b'\x7f\xf8\x00\x00\x00\x00\x00\x00'
|
|
LE_DOUBLE_NAN = bytes(reversed(BE_DOUBLE_NAN))
|
|
|
|
BE_FLOAT_INF = b'\x7f\x80\x00\x00'
|
|
LE_FLOAT_INF = bytes(reversed(BE_FLOAT_INF))
|
|
BE_FLOAT_NAN = b'\x7f\xc0\x00\x00'
|
|
LE_FLOAT_NAN = bytes(reversed(BE_FLOAT_NAN))
|
|
|
|
# on non-IEEE platforms, attempting to unpack a bit pattern
|
|
# representing an infinity or a NaN should raise an exception.
|
|
|
|
class UnknownFormatTestCase(unittest.TestCase):
|
|
def setUp(self):
|
|
self.save_formats = {'double':float.__getformat__('double'),
|
|
'float':float.__getformat__('float')}
|
|
float.__setformat__('double', 'unknown')
|
|
float.__setformat__('float', 'unknown')
|
|
|
|
def tearDown(self):
|
|
float.__setformat__('double', self.save_formats['double'])
|
|
float.__setformat__('float', self.save_formats['float'])
|
|
|
|
def test_double_specials_dont_unpack(self):
|
|
for fmt, data in [('>d', BE_DOUBLE_INF),
|
|
('>d', BE_DOUBLE_NAN),
|
|
('<d', LE_DOUBLE_INF),
|
|
('<d', LE_DOUBLE_NAN)]:
|
|
self.assertRaises(ValueError, struct.unpack, fmt, data)
|
|
|
|
def test_float_specials_dont_unpack(self):
|
|
for fmt, data in [('>f', BE_FLOAT_INF),
|
|
('>f', BE_FLOAT_NAN),
|
|
('<f', LE_FLOAT_INF),
|
|
('<f', LE_FLOAT_NAN)]:
|
|
self.assertRaises(ValueError, struct.unpack, fmt, data)
|
|
|
|
|
|
# on an IEEE platform, all we guarantee is that bit patterns
|
|
# representing infinities or NaNs do not raise an exception; all else
|
|
# is accident (today).
|
|
# let's also try to guarantee that -0.0 and 0.0 don't get confused.
|
|
|
|
class IEEEFormatTestCase(unittest.TestCase):
|
|
if float.__getformat__("double").startswith("IEEE"):
|
|
def test_double_specials_do_unpack(self):
|
|
for fmt, data in [('>d', BE_DOUBLE_INF),
|
|
('>d', BE_DOUBLE_NAN),
|
|
('<d', LE_DOUBLE_INF),
|
|
('<d', LE_DOUBLE_NAN)]:
|
|
struct.unpack(fmt, data)
|
|
|
|
if float.__getformat__("float").startswith("IEEE"):
|
|
def test_float_specials_do_unpack(self):
|
|
for fmt, data in [('>f', BE_FLOAT_INF),
|
|
('>f', BE_FLOAT_NAN),
|
|
('<f', LE_FLOAT_INF),
|
|
('<f', LE_FLOAT_NAN)]:
|
|
struct.unpack(fmt, data)
|
|
|
|
if float.__getformat__("double").startswith("IEEE"):
|
|
def test_negative_zero(self):
|
|
import math
|
|
def pos_pos():
|
|
return 0.0, math.atan2(0.0, -1)
|
|
def pos_neg():
|
|
return 0.0, math.atan2(-0.0, -1)
|
|
def neg_pos():
|
|
return -0.0, math.atan2(0.0, -1)
|
|
def neg_neg():
|
|
return -0.0, math.atan2(-0.0, -1)
|
|
self.assertEquals(pos_pos(), neg_pos())
|
|
self.assertEquals(pos_neg(), neg_neg())
|
|
|
|
class FormatTestCase(unittest.TestCase):
|
|
def test_format(self):
|
|
# these should be rewritten to use both format(x, spec) and
|
|
# x.__format__(spec)
|
|
|
|
self.assertEqual(format(0.0, 'f'), '0.000000')
|
|
|
|
# the default is 'g', except for empty format spec
|
|
self.assertEqual(format(0.0, ''), '0.0')
|
|
self.assertEqual(format(0.01, ''), '0.01')
|
|
self.assertEqual(format(0.01, 'g'), '0.01')
|
|
|
|
self.assertEqual(format(0, 'f'), '0.000000')
|
|
|
|
self.assertEqual(format(1.0, 'f'), '1.000000')
|
|
self.assertEqual(format(1, 'f'), '1.000000')
|
|
|
|
self.assertEqual(format(-1.0, 'f'), '-1.000000')
|
|
self.assertEqual(format(-1, 'f'), '-1.000000')
|
|
|
|
self.assertEqual(format( 1.0, ' f'), ' 1.000000')
|
|
self.assertEqual(format(-1.0, ' f'), '-1.000000')
|
|
self.assertEqual(format( 1.0, '+f'), '+1.000000')
|
|
self.assertEqual(format(-1.0, '+f'), '-1.000000')
|
|
|
|
# % formatting
|
|
self.assertEqual(format(-1.0, '%'), '-100.000000%')
|
|
|
|
# conversion to string should fail
|
|
self.assertRaises(ValueError, format, 3.0, "s")
|
|
|
|
|
|
class ReprTestCase(unittest.TestCase):
|
|
def test_repr(self):
|
|
floats_file = open(os.path.join(os.path.split(__file__)[0],
|
|
'floating_points.txt'))
|
|
for line in floats_file:
|
|
line = line.strip()
|
|
if not line or line.startswith('#'):
|
|
continue
|
|
v = eval(line)
|
|
self.assertEqual(v, eval(repr(v)))
|
|
floats_file.close()
|
|
|
|
# Beginning with Python 2.6 float has cross platform compatible
|
|
# ways to create and representate inf and nan
|
|
class InfNanTest(unittest.TestCase):
|
|
def test_inf_from_str(self):
|
|
self.assert_(isinf(float("inf")))
|
|
self.assert_(isinf(float("+inf")))
|
|
self.assert_(isinf(float("-inf")))
|
|
|
|
self.assertEqual(repr(float("inf")), "inf")
|
|
self.assertEqual(repr(float("+inf")), "inf")
|
|
self.assertEqual(repr(float("-inf")), "-inf")
|
|
|
|
self.assertEqual(repr(float("INF")), "inf")
|
|
self.assertEqual(repr(float("+Inf")), "inf")
|
|
self.assertEqual(repr(float("-iNF")), "-inf")
|
|
|
|
self.assertEqual(str(float("inf")), "inf")
|
|
self.assertEqual(str(float("+inf")), "inf")
|
|
self.assertEqual(str(float("-inf")), "-inf")
|
|
|
|
self.assertRaises(ValueError, float, "info")
|
|
self.assertRaises(ValueError, float, "+info")
|
|
self.assertRaises(ValueError, float, "-info")
|
|
self.assertRaises(ValueError, float, "in")
|
|
self.assertRaises(ValueError, float, "+in")
|
|
self.assertRaises(ValueError, float, "-in")
|
|
|
|
def test_inf_as_str(self):
|
|
self.assertEqual(repr(1e300 * 1e300), "inf")
|
|
self.assertEqual(repr(-1e300 * 1e300), "-inf")
|
|
|
|
self.assertEqual(str(1e300 * 1e300), "inf")
|
|
self.assertEqual(str(-1e300 * 1e300), "-inf")
|
|
|
|
def test_nan_from_str(self):
|
|
self.assert_(isnan(float("nan")))
|
|
self.assert_(isnan(float("+nan")))
|
|
self.assert_(isnan(float("-nan")))
|
|
|
|
self.assertEqual(repr(float("nan")), "nan")
|
|
self.assertEqual(repr(float("+nan")), "nan")
|
|
self.assertEqual(repr(float("-nan")), "nan")
|
|
|
|
self.assertEqual(repr(float("NAN")), "nan")
|
|
self.assertEqual(repr(float("+NAn")), "nan")
|
|
self.assertEqual(repr(float("-NaN")), "nan")
|
|
|
|
self.assertEqual(str(float("nan")), "nan")
|
|
self.assertEqual(str(float("+nan")), "nan")
|
|
self.assertEqual(str(float("-nan")), "nan")
|
|
|
|
self.assertRaises(ValueError, float, "nana")
|
|
self.assertRaises(ValueError, float, "+nana")
|
|
self.assertRaises(ValueError, float, "-nana")
|
|
self.assertRaises(ValueError, float, "na")
|
|
self.assertRaises(ValueError, float, "+na")
|
|
self.assertRaises(ValueError, float, "-na")
|
|
|
|
def test_nan_as_str(self):
|
|
self.assertEqual(repr(1e300 * 1e300 * 0), "nan")
|
|
self.assertEqual(repr(-1e300 * 1e300 * 0), "nan")
|
|
|
|
self.assertEqual(str(1e300 * 1e300 * 0), "nan")
|
|
self.assertEqual(str(-1e300 * 1e300 * 0), "nan")
|
|
|
|
def test_main():
|
|
test_support.run_unittest(
|
|
FormatFunctionsTestCase,
|
|
UnknownFormatTestCase,
|
|
IEEEFormatTestCase,
|
|
FormatTestCase,
|
|
ReprTestCase,
|
|
InfNanTest,
|
|
)
|
|
|
|
if __name__ == '__main__':
|
|
test_main()
|