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# Licensed to the .NET Foundation under one or more agreements.
# The .NET Foundation licenses this file to you under the Apache 2.0 License.
# See the LICENSE file in the project root for more information.
import math
import os
from iptest import IronPythonTestCase, is_cli, is_netcoreapp, is_netcoreapp21, big, run_test, skipUnlessIronPython
class A:
def __str__(self):
return "str"
def __repr__(self):
return "repr"
class B(object):
def __str__(self):
return "str"
def __repr__(self):
return "repr"
format_rounds_to_even = "%.0f" % 2.5 == "2"
class FormattingTest(IronPythonTestCase):
def test_format_rounds_to_even(self):
# https://github.com/IronLanguages/ironpython2/issues/634
self.assertEqual(format_rounds_to_even, is_netcoreapp and not is_netcoreapp21 or not is_cli)
def test_floats(self):
"""Formatting of floats"""
def str(x): return "%.12g" % x
# 12 significant digits near the decimal point
self.assertEqual(str(12345678901.2), "12345678901.2")
self.assertEqual(str(1.23456789012), "1.23456789012")
# 12 significant digits near the decimal point, preceded by up to 3 0s
self.assertEqual(str(123456789012.00), "123456789012")
self.assertEqual(str(123456789012.0), "123456789012")
self.assertEqual(str(00.123456789012), "0.123456789012")
self.assertEqual(str(0.000123456789012), "0.000123456789012")
# 12 significant digits near the decimal point, followed by 0s, or preceded more than 3 0s
self.assertEqual(str(1234567890120.00), "1.23456789012e+12")
self.assertEqual(str(0.0000123456789012), "1.23456789012e-05")
# More than 12 significant digits near the decimal point, with rounding down
self.assertEqual(str(12345678901.23), "12345678901.2")
self.assertEqual(str(123456789012.3), "123456789012")
self.assertEqual(str(1.234567890123), "1.23456789012")
# More than 12 significant digits near the decimal point, with rounding up
self.assertEqual(str(12345678901.25), "12345678901.2" if format_rounds_to_even else "12345678901.3")
self.assertEqual(str(123456789012), "123456789012")
self.assertEqual(str(1.234567890125), "1.23456789012" if format_rounds_to_even else "1.23456789013")
self.assertEqual(str(1.234567890126), "1.23456789013")
# Significant digits away from the decimal point
self.assertEqual(str(100000000000.0), "100000000000")
self.assertEqual(str(1000000000000.0), "1e+12")
self.assertEqual(str(0.0001), "0.0001")
self.assertEqual(str(0.00001), "1e-05")
# Near the ends of the number line
# System.Double.MaxValue
self.assertEqual(str(1.79769313486232e+308), "inf")
self.assertEqual(str(1.79769313486231e+308), "1.79769313486e+308")
# System.Double.MinValue
self.assertEqual(str(-1.79769313486232e+308), "-inf")
self.assertEqual(str(-1.79769313486231e+308), "-1.79769313486e+308")
# System.Double.Epsilon
self.assertEqual(str(4.94065645841247e-324), "4.94065645841e-324")
# NaN
self.assertEqual(str((1.79769313486232e+308 * 2.0) * 0.0), "nan")
self.assertEqual(str(2.0), "2")
self.assertEqual(str(.0), "0")
self.assertEqual(str(-.0), "-0")
# verify small strings display all precision by default
x = 123.456E-19 * 2.0
self.assertEqual(str(x), "2.46912e-17")
######################################################################################
values = [
# 6 significant digits near the decimal point
(123456, "123456"),
(123456.0, "123456"),
(12345.6, "12345.6"),
(1.23456, "1.23456"),
(0.123456, "0.123456"),
# 6 significant digits near the decimal point, preceded by up to 3 0s
(0.000123456, "0.000123456"),
# More than 6 significant digits near the decimal point, with rounding down
(123456.4, "123456"),
(0.0001234564, "0.000123456"),
# More than 6 significant digits near the decimal point, with rounding up
(0.0001234565, "0.000123457"),
# Significant digits away from the decimal point
(100000.0, "100000"),
(1000000.0, "1e+06"),
(0.0001, "0.0001"),
(0.00001, "1e-05"),
(123456.5, "123456" if format_rounds_to_even else "123457"),
]
for v in values:
self.assertEqual("%g" % v[0], v[1])
self.assertEqual("%.6g" % v[0], v[1])
self.assertEqual("% .6g" % v[0], " " + v[1])
def test_formatting_issues(self):
# these were not working properly
values = (
("0%.1f" % -0.01, "0-0.0"),
("%+01.0f" % -0.0, "-0"),
("%#9f" % 1.0, " 1.000000"),
("%#9e" % 1.0, "1.000000e+00"),
("%#9g" % 1.0, " 1.00000"),
("%-#3.0f" % 1.0, "1. "),
("%+07.0e" % -0.0, "-00e+00"),
( "% 7.0e" % -0.0, " -0e+00"),
("%0#7.0e" % 1.0, "01.e+00"),
( "%104.100f" % 1.0, " 1." + ("0" * 100)),
("% 104.100f" % 1.0, " 1." + ("0" * 100)),
("%+104.100f" % 1.0, " +1." + ("0" * 100)),
("%0104.100f" % 1.0, "001." + ("0" * 100)),
("%.200f" % 1.0, "1." + ("0" * 200)), # OverflowError
)
for a, b in values:
self.assertEqual(a, b)
# TODO: fix these
values = (
)
if is_cli:
for a, b in values:
self.assertNotEqual(a, b)
else:
for a, b in values:
self.assertEqual(a, b)
def test_ints(self):
# Test results can be generated by running the following with CPython:
import itertools
def gen_results(val, suffix):
flags = "0- +"
all_combinations = list(itertools.chain.from_iterable((list("".join(x) for x in itertools.combinations(flags, i)) for i in range(len(flags)+1))))
res = {}
for flags in all_combinations:
res.setdefault(("%" + flags + suffix + "d") % val, []).append(flags)
return res
tests = {
(1, ''): {'+1': ['+', '0+', '-+', ' +', '0-+', '0 +', '- +', '0- +'], '1': ['', '0', '-', '0-'], ' 1': [' ', '0 ', '- ', '0- ']},
(-1, ''): {'-1': ['', '0', '-', ' ', '+', '0-', '0 ', '0+', '- ', '-+', ' +', '0- ', '0-+', '0 +', '- +', '0- +']},
(1, '4'): {' 1': ['', ' '], '1 ': ['-', '0-'], '+1 ': ['-+', '0-+', '- +', '0- +'], ' +1': ['+', ' +'], ' 001': ['0 '], '0001': ['0'], '+001': ['0+', '0 +'], ' 1 ': ['- ', '0- ']},
(-1, '4'): {' -1': ['', ' ', '+', ' +'], '-001': ['0', '0 ', '0+', '0 +'], '-1 ': ['-', '0-', '- ', '-+', '0- ', '0-+', '- +', '0- +']},
(1, '.2'): {'01': ['', '0', '-', '0-'], ' 01': [' ', '0 ', '- ', '0- '], '+01': ['+', '0+', '-+', ' +', '0-+', '0 +', '- +', '0- +']},
(-1, '.2'): {'-01': ['', '0', '-', ' ', '+', '0-', '0 ', '0+', '- ', '-+', ' +', '0- ', '0-+', '0 +', '- +', '0- +']},
(1, '4.2'): {' 01': ['', ' '], '0001': ['0'], '01 ': ['-', '0-'], ' +01': ['+', ' +'], ' 001': ['0 '], '+001': ['0+', '0 +'], ' 01 ': ['- ', '0- '], '+01 ': ['-+', '0-+', '- +', '0- +']},
(-1, '4.2'): {' -01': ['', ' ', '+', ' +'], '-001': ['0', '0 ', '0+', '0 +'], '-01 ': ['-', '0-', '- ', '-+', '0- ', '0-+', '- +', '0- +']},
(1, '110'): {' ' * 109 + '1': ['', ' '], '0' * 109 + '1': ['0'], '1' + ' ' * 109: ['-', '0-'], ' ' * 108 + '+1': ['+', ' +'], ' ' + '0' * 108 + '1': ['0 '], '+' + '0' * 108 + '1': ['0+', '0 +'], ' 1' + ' ' * 108: ['- ', '0- '], '+1' + ' ' * 108: ['-+', '0-+', '- +', '0- +']},
(-1, '110'): {' ' * 108 + '-1': ['', ' ', '+', ' +'], '-' + '0' * 108 + '1': ['0', '0 ', '0+', '0 +'], '-1' + ' ' * 108: ['-', '0-', '- ', '-+', '0- ', '0-+', '- +', '0- +']},
(1, '.102'): {'0' * 101 + '1': ['', '0', '-', '0-'], ' ' + '0' * 101 + '1': [' ', '0 ', '- ', '0- '], '+' + '0' * 101 + '1': ['+', '0+', '-+', ' +', '0-+', '0 +', '- +', '0- +']},
(-1, '.102'): {'-' + '0' * 101 + '1': ['', '0', '-', ' ', '+', '0-', '0 ', '0+', '- ', '-+', ' +', '0- ', '0-+', '0 +', '- +', '0- +']},
(1, '110.102'): {' ' * 8 + '0' * 101 + '1': ['', ' '], '0' * 109 + '1': ['0'], '0' * 101 + '1' + ' ' * 8: ['-', '0-'], ' ' * 7 + '+' + '0'*101 + '1': ['+', ' +'], ' ' + '0' * 108 + '1': ['0 '], '+' + '0' * 108 + '1': ['0+', '0 +'], ' ' + '0' * 101 + '1' + ' ' * 7: ['- ', '0- '], '+' + '0' * 101 + '1' + ' ' * 7: ['-+', '0-+', '- +', '0- +']},
(-1, '110.102'): {' ' * 7 + '-' + '0' * 101 + '1': ['', ' ', '+', ' +'], '-' + '0' * 108 + '1': ['0', '0 ', '0+', '0 +'], '-' + '0' * 101 + '1' + ' ' * 7: ['-', '0-', '- ', '-+', '0- ', '0-+', '- +', '0- +']},
}
for k, test_res in tests.items():
val, suffix = k
self.assertEqual(gen_results(val, suffix), test_res)
for res, v in test_res.items():
for flags in v:
self.assertEqual(("%" + flags + suffix + "d") % val, res, msg="{!r} % {}".format("%" + flags + suffix + "d", val))
self.assertEqual(("%" + flags + suffix + "d") % big(val), res, msg="{!r} % big({})".format("%" + flags + suffix + "d", val))
# alternate form does nothing
self.assertEqual(("%#" + flags + suffix + "d") % val, res, msg="{!r} % {}".format("%#" + flags + suffix + "d", val))
self.assertEqual(("%#" + flags + suffix + "d") % big(val), res, msg="{!r} % big({})".format("%#" + flags + suffix + "d", val))
@skipUnlessIronPython()
def test_single(self):
"""Formatting of System.Single"""
self.load_iron_python_test()
import IronPythonTest
f = IronPythonTest.DoubleToFloat.ToFloat(1.0)
self.assertEqual(str(f), "1.0")
self.assertEqual("%g" % f, "1")
f = IronPythonTest.DoubleToFloat.ToFloat(1.1)
self.assertEqual(str(f), "1.1")
self.assertEqual("%g" % f, "1.1")
f = IronPythonTest.DoubleToFloat.ToFloat(1.2345678)
self.assertEqual(str(f), "1.23457")
self.assertEqual("%g" % f, "1.23457")
f = IronPythonTest.DoubleToFloat.ToFloat(1234567.8)
self.assertEqual(str(f), "1.23457e+06")
self.assertEqual("%g" % f, "1.23457e+06")
def test_long(self):
# these were not working properly
self.assertEqual("%x" % (-1 << 31), '-80000000')
self.assertEqual("% 9x" % (1 << 31), ' 80000000')
def test_errors(self):
def formatError():
"%d" % (1,2)
self.assertRaises(TypeError, formatError, None)
def formatError_earlyEnd():
"%" % None
self.assertRaises(ValueError, formatError_earlyEnd)
def test_basic(self):
self.assertEqual(len('%10d' %(1)), 10)
#formatting should accept a float for int formatting...
self.assertEqual('%d' % 3.7, '3')
self.assertEqual("%0.3f" % 10.8, "10.800")
def test__repr__and__str__(self):
"""test that %s / %r work correctly"""
# oldstyle class
a = A()
self.assertEqual("%s" % a, "str")
self.assertEqual("%r" % a, "repr")
b = B()
self.assertEqual("%s" % b, "str")
self.assertEqual("%r" % b, "repr")
def test_unicode(self):
"""# if str() returns Unicode, so should test character"""
self.assertEqual("%c" % 23, chr(23))
self.assertRaises(OverflowError, (lambda: "%c" % -1) )
self.assertEqual("%c" % str('x'), str('x'))
try:
self.assertEqual("%c" % 65535, '\uffff')
except OverflowError:
pass
def test_i_u(self):
"""test %i, %u, not covered in test_format"""
self.assertEqual('%i' % 23, '23')
self.assertEqual('%i' % 23.9, '23')
self.assertEqual('%+u' % 5, '+5')
self.assertEqual('%05u' % 3, '00003')
self.assertEqual('% u' % 19, ' 19')
self.assertEqual('%*u' % (5,10), ' 10')
self.assertEqual('%e' % 1000000, '1.000000e+06')
self.assertEqual('%E' % 1000000, '1.000000E+06')
self.assertEqual('%.2e' % 1000000, '1.00e+06')
self.assertEqual('%.2E' % 1000000, '1.00E+06')
self.assertEqual('%.2g' % 1000000, '1e+06')
self.assertEqual('%G' % 100, '100')
def test_named_inputs(self):
"""test named inputs"""
fmtstr = '%(x)+d -- %(y)s -- %(z).2f'
self.assertEqual(fmtstr % {'x':9, 'y':'quux', 'z':3.1415}, '+9 -- quux -- 3.14')
self.assertRaises(KeyError, (lambda:fmtstr % {}))
self.assertRaises(KeyError, (lambda:fmtstr % {'x': 3}))
self.assertRaises(TypeError, (lambda:fmtstr % {'x': 'notanint', 'y':'str', 'z':2.1878}))
self.assertEqual('%(key)s %(yek)d' % {'key':'ff', 'yek':200}, "ff 200")
self.assertEqual(repr("\u00F4"), "'\xf4'")
self.assertEqual(repr("\u10F4"), "'\u10f4'")
self.assertRaises(TypeError, lambda: "%5c" % None)
self.assertEqual("%5c" % 'c', ' c')
self.assertEqual("%+5c" % 'c', ' c')
self.assertEqual("%-5c" % 'c', 'c ')
self.assertEqual("%5s" % None, ' None')
self.assertEqual("%5s" % 'abc', ' abc')
self.assertEqual("%+5s" % 'abc', ' abc')
self.assertEqual("%-5s" % 'abc', 'abc ')
def test_named_inputs_nested_parens(self):
"""Test named inputs with nested ()"""
# Success cases
s = '_%((key))s_' % {'(key)':10}
self.assertEqual(s, '_10_')
s = '_%((((key))))s_' % {'(((key)))':20}
self.assertEqual(s, '_20_')
s = '%((%s))s' % { '(%s)' : 30 }
self.assertEqual(s, '30')
s = '%()s' % { '': 40 }
self.assertEqual(s,'40')
s = '%(a(b)c)s' % { 'a(b)c' : 50 }
self.assertEqual(s,'50')
s = '%(a)s)s' % { 'a' : 60 }
self.assertEqual(s,'60)s')
s = '%(((a)s))s' % {'((a)s)': 70, 'abc': 'efg'}
self.assertEqual(s, '70')
# Error cases
# ensure we properly count number of expected closing ')'
def Error1():
return '%(a))s' % { 'a' : 10, 'a)' : 20 }
self.assertRaises(ValueError, Error1)
# Incomplete format key, not enough closing ')'
def Error2():
return '%((a)s' % { 'a' : 10, '(a' : 20 }
self.assertRaises(ValueError, Error2)
self.assertEqual('%*s' %(-5,'abc'), 'abc ')
def test_cp28936(self):
self.assertEqual('%10.1e' % 1, ' 1.0e+00')
self.assertEqual('% 10.1e' % 1, ' 1.0e+00')
self.assertEqual('%+10.1e' % 1, ' +1.0e+00')
self.assertEqual('%10.1e' % -1, ' -1.0e+00')
self.assertEqual('% 10.1e' % -1, ' -1.0e+00')
self.assertEqual('%+10.1e' % -1, ' -1.0e+00')
self.assertEqual('%-10.1e' % 1, '1.0e+00 ')
self.assertEqual('% -10.1e' % 1, ' 1.0e+00 ')
self.assertEqual('%+-10.1e' % 1, '+1.0e+00 ')
self.assertEqual('%-10.1e' % -1, '-1.0e+00 ')
self.assertEqual('% -10.1e' % -1, '-1.0e+00 ')
self.assertEqual('%+-10.1e' % -1, '-1.0e+00 ')
def test_inf_nan(self):
inf_nan_cases = """
-- nans and infinities
%f nan -> nan
%f inf -> inf
%f -infinity -> -inf
%F nan -> NAN
%F infinity -> INF
%F -inf -> -INF
-- nans and infinities
%e nan -> nan
%e inf -> inf
%e -infinity -> -inf
%E nan -> NAN
%E infinity -> INF
%E -inf -> -INF
-- nans and infinities
%g nan -> nan
%g inf -> inf
%g -infinity -> -inf
%G nan -> NAN
%G infinity -> INF
%G -inf -> -INF
""".strip().split("\n")
self.check_lines(inf_nan_cases)
def test_format_testfile(self):
"""the following is borrowed from stdlib"""
expected_failures = []
if is_cli:
expected_failures = """
%r 0.03 -> 0.03
%r 0.04 -> 0.04
%r 0.05 -> 0.05
%r 9999999999999999 -> 1e+16
%r 1e16 -> 1e+16
%r 1.001e-4 -> 0.0001001
%r 1.00000000001e-4 -> 0.000100000000001
%r 1.0000000001e-4 -> 0.00010000000001
%r 0.9999999999999999e-4 -> 9.999999999999999e-05
%r 0.999999999999e-4 -> 9.99999999999e-05
%r 0.999e-4 -> 9.99e-05
%r 1e-5 -> 1e-05
""".strip().split("\n")
if not format_rounds_to_even:
expected_failures += """
%.0f 2.5 -> 2
%.0f 1e49 -> 9999999999999999464902769475481793196872414789632
%.0f 9.9999999999999987e+49 -> 99999999999999986860582406952576489172979654066176
%.0f 1e50 -> 100000000000000007629769841091887003294964970946560
%.1f 0.25 -> 0.2
%.2f 0.125 -> 0.12
%#.0f 2.5 -> 2.
%.0e 2.5 -> 2e+00
%.0e 4.5 -> 4e+00
%.0e 6.5 -> 6e+00
%.0e 8.5 -> 8e+00
%#.0e 2.5 -> 2.e+00
%#.0e 4.5 -> 4.e+00
%#.0e 6.5 -> 6.e+00
%#.0e 8.5 -> 8.e+00
""".strip().split("\n")
import test
with open(os.path.join(test.__path__[0], 'formatfloat_testcases.txt')) as testfile:
self.check_lines(testfile, expected_failures=expected_failures)
def check_lines(self, lines, expected_failures=None):
for i, line in enumerate(lines):
if line.startswith('--'):
continue
line = line.strip()
if not line:
continue
lhs, rhs = map(str.strip, line.split('->'))
fmt, arg = lhs.split()
arg = float(arg)
if expected_failures and line in expected_failures:
self.assertNotEqual(fmt % arg, rhs, "line " + str(i+1))
continue
self.assertEqual(fmt % arg, rhs, "line " + str(i+1))
if not math.isnan(arg) and math.copysign(1.0, arg) > 0.0:
self.assertEqual(fmt % -arg, '-' + rhs)
run_test(__name__)