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Unified Diff: Modules/_decimal/tests/formathelper.py

Issue 7652: Merge C version of decimal into py3k.
Patch Set: Created 7 years, 3 months ago
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Modules/_decimal/tests/formathelper.py Sat Mar 10 18:12:20 2012 +0100
@@ -0,0 +1,344 @@
+#
+# Copyright (c) 2008-2010 Stefan Krah. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+
+
+# Generate PEP-3101 format strings.
+
+
+import os, sys, locale, random
+import platform, subprocess
+from test.support import import_fresh_module
+from distutils.spawn import find_executable
+
+C = import_fresh_module('decimal', fresh=['_decimal'])
+P = import_fresh_module('decimal', blocked=['_decimal'])
+
+
+windows_lang_strings = [
+ "chinese", "chinese-simplified", "chinese-traditional", "czech", "danish",
+ "dutch", "belgian", "english", "australian", "canadian", "english-nz",
+ "english-uk", "english-us", "finnish", "french", "french-belgian",
+ "french-canadian", "french-swiss", "german", "german-austrian",
+ "german-swiss", "greek", "hungarian", "icelandic", "italian", "italian-swiss",
+ "japanese", "korean", "norwegian", "norwegian-bokmal", "norwegian-nynorsk",
+ "polish", "portuguese", "portuguese-brazil", "russian", "slovak", "spanish",
+ "spanish-mexican", "spanish-modern", "swedish", "turkish",
+]
+
+preferred_encoding = {
+ 'cs_CZ': 'ISO8859-2',
+ 'cs_CZ.iso88592': 'ISO8859-2',
+ 'czech': 'ISO8859-2',
+ 'eesti': 'ISO8859-1',
+ 'estonian': 'ISO8859-1',
+ 'et_EE': 'ISO8859-15',
+ 'et_EE.ISO-8859-15': 'ISO8859-15',
+ 'et_EE.iso885915': 'ISO8859-15',
+ 'et_EE.iso88591': 'ISO8859-1',
+ 'fi_FI.iso88591': 'ISO8859-1',
+ 'fi_FI': 'ISO8859-15',
+ 'fi_FI@euro': 'ISO8859-15',
+ 'fi_FI.iso885915@euro': 'ISO8859-15',
+ 'finnish': 'ISO8859-1',
+ 'lv_LV': 'ISO8859-13',
+ 'lv_LV.iso885913': 'ISO8859-13',
+ 'nb_NO': 'ISO8859-1',
+ 'nb_NO.iso88591': 'ISO8859-1',
+ 'bokmal': 'ISO8859-1',
+ 'nn_NO': 'ISO8859-1',
+ 'nn_NO.iso88591': 'ISO8859-1',
+ 'no_NO': 'ISO8859-1',
+ 'norwegian': 'ISO8859-1',
+ 'nynorsk': 'ISO8859-1',
+ 'ru_RU': 'ISO8859-5',
+ 'ru_RU.iso88595': 'ISO8859-5',
+ 'russian': 'ISO8859-5',
+ 'ru_RU.KOI8-R': 'KOI8-R',
+ 'ru_RU.koi8r': 'KOI8-R',
+ 'ru_RU.CP1251': 'CP1251',
+ 'ru_RU.cp1251': 'CP1251',
+ 'sk_SK': 'ISO8859-2',
+ 'sk_SK.iso88592': 'ISO8859-2',
+ 'slovak': 'ISO8859-2',
+ 'sv_FI': 'ISO8859-1',
+ 'sv_FI.iso88591': 'ISO8859-1',
+ 'sv_FI@euro': 'ISO8859-15',
+ 'sv_FI.iso885915@euro': 'ISO8859-15',
+ 'uk_UA': 'KOI8-U',
+ 'uk_UA.koi8u': 'KOI8-U'
+}
+
+integers = [
+ "",
+ "1",
+ "12",
+ "123",
+ "1234",
+ "12345",
+ "123456",
+ "1234567",
+ "12345678",
+ "123456789",
+ "1234567890",
+ "12345678901",
+ "123456789012",
+ "1234567890123",
+ "12345678901234",
+ "123456789012345",
+ "1234567890123456",
+ "12345678901234567",
+ "123456789012345678",
+ "1234567890123456789",
+ "12345678901234567890",
+ "123456789012345678901",
+ "1234567890123456789012",
+]
+
+numbers = [
+ "0", "-0", "+0",
+ "0.0", "-0.0", "+0.0",
+ "0e0", "-0e0", "+0e0",
+ ".0", "-.0",
+ ".1", "-.1",
+ "1.1", "-1.1",
+ "1e1", "-1e1"
+]
+
+# Get the list of available locales.
+if platform.system() == 'Windows':
+ locale_list = windows_lang_strings
+else:
+ locale_list = ['C']
+ if os.path.isfile("/var/lib/locales/supported.d/local"):
+ # On Ubuntu, `locale -a` gives the wrong case for some locales,
+ # so we get the correct names directly:
+ with open("/var/lib/locales/supported.d/local") as f:
+ locale_list = [loc.split()[0] for loc in f.readlines() \
+ if not loc.startswith('#')]
+ elif find_executable('locale'):
+ locale_list = subprocess.Popen(["locale", "-a"],
+ stdout=subprocess.PIPE).communicate()[0]
+ try:
+ locale_list = locale_list.decode()
+ except UnicodeDecodeError:
+ # Some distributions insist on using latin-1 characters
+ # in their locale names.
+ locale_list = locale_list.decode('latin-1')
+ locale_list = locale_list.split('\n')
+try:
+ locale_list.remove('')
+except ValueError:
+ pass
+
+# Debian
+if os.path.isfile("/etc/locale.alias"):
+ with open("/etc/locale.alias") as f:
+ while 1:
+ try:
+ line = f.readline()
+ except UnicodeDecodeError:
+ continue
+ if line == "":
+ break
+ if line.startswith('#'):
+ continue
+ x = line.split()
+ if len(x) == 2:
+ if x[0] in locale_list:
+ locale_list.remove(x[0])
+
+# FreeBSD
+if platform.system() == 'FreeBSD':
+ # http://www.freebsd.org/cgi/query-pr.cgi?pr=142173
+ # en_GB.US-ASCII has 163 as the currency symbol.
+ for loc in ['it_CH.ISO8859-1', 'it_CH.ISO8859-15', 'it_CH.UTF-8',
+ 'it_IT.ISO8859-1', 'it_IT.ISO8859-15', 'it_IT.UTF-8',
+ 'sl_SI.ISO8859-2', 'sl_SI.UTF-8',
+ 'en_GB.US-ASCII']:
+ try:
+ locale_list.remove(loc)
+ except ValueError:
+ pass
+
+# Print a testcase in the format of the IBM tests (for runtest.c):
+def get_preferred_encoding():
+ loc = locale.setlocale(locale.LC_CTYPE)
+ if loc in preferred_encoding:
+ return preferred_encoding[loc]
+ else:
+ return locale.getpreferredencoding()
+
+def printit(testno, s, fmt, encoding=None):
+ if not encoding:
+ encoding = get_preferred_encoding()
+ try:
+ result = format(P.Decimal(s), fmt)
+ fmt = str(fmt.encode(encoding))[2:-1]
+ result = str(result.encode(encoding))[2:-1]
+ if "'" in result:
+ sys.stdout.write("xfmt%d format %s '%s' -> \"%s\"\n"
+ % (testno, s, fmt, result))
+ else:
+ sys.stdout.write("xfmt%d format %s '%s' -> '%s'\n"
+ % (testno, s, fmt, result))
+ except Exception as err:
+ sys.stderr.write("%s %s %s\n" % (err, s, fmt))
+
+
+# Check if an integer can be converted to a valid fill character.
+def check_fillchar(i):
+ try:
+ c = chr(i)
+ c.encode('utf-8').decode()
+ format(P.Decimal(0), c + '<19g')
+ if c in ("'", '"', '\\'):
+ return None
+ return c
+ except:
+ return None
+
+# Generate all unicode characters that are accepted as
+# fill characters by decimal.py.
+def all_fillchars():
+ for i in range(32, 0x110002):
+ c = check_fillchar(i)
+ if c: yield c
+
+# Return random fill character.
+def rand_fillchar():
+ while 1:
+ i = random.randrange(32, 0x110002)
+ c = check_fillchar(i)
+ if c: return c
+
+# Generate random format strings
+# [[fill]align][sign][#][0][width][.precision][type]
+def rand_format(fill, typespec='EeGgFfn%'):
+ active = sorted(random.sample(range(7), random.randrange(8)))
+ have_align = 0
+ s = ''
+ for elem in active:
+ if elem == 0: # fill+align
+ s += fill
+ s += random.choice('<>=^')
+ have_align = 1
+ elif elem == 1: # sign
+ s += random.choice('+- ')
+ elif elem == 2 and not have_align: # zeropad
+ s += '0'
+ elif elem == 3: # width
+ s += str(random.randrange(1, 100))
+ elif elem == 4: # thousands separator
+ s += ','
+ elif elem == 5: # prec
+ s += '.'
+ s += str(random.randrange(100))
+ elif elem == 6:
+ if 4 in active: c = typespec.replace('n', '')
+ else: c = typespec
+ s += random.choice(c)
+ return s
+
+# Partially brute force all possible format strings containing a thousands
+# separator. Fall back to random where the runtime would become excessive.
+# [[fill]align][sign][#][0][width][,][.precision][type]
+def all_format_sep():
+ for align in ('', '<', '>', '=', '^'):
+ for fill in ('', 'x'):
+ if align == '': fill = ''
+ for sign in ('', '+', '-', ' '):
+ for zeropad in ('', '0'):
+ if align != '': zeropad = ''
+ for width in ['']+[str(y) for y in range(1, 15)]+['101']:
+ for prec in ['']+['.'+str(y) for y in range(15)]:
+ # for type in ('', 'E', 'e', 'G', 'g', 'F', 'f', '%'):
+ type = random.choice(('', 'E', 'e', 'G', 'g', 'F', 'f', '%'))
+ yield ''.join((fill, align, sign, zeropad, width, ',', prec, type))
+
+# Partially brute force all possible format strings with an 'n' specifier.
+# [[fill]align][sign][#][0][width][,][.precision][type]
+def all_format_loc():
+ for align in ('', '<', '>', '=', '^'):
+ for fill in ('', 'x'):
+ if align == '': fill = ''
+ for sign in ('', '+', '-', ' '):
+ for zeropad in ('', '0'):
+ if align != '': zeropad = ''
+ for width in ['']+[str(y) for y in range(1, 20)]+['101']:
+ for prec in ['']+['.'+str(y) for y in range(1, 20)]:
+ yield ''.join((fill, align, sign, zeropad, width, prec, 'n'))
+
+# Generate random format strings with a unicode fill character
+# [[fill]align][sign][#][0][width][,][.precision][type]
+def randfill(fill):
+ active = sorted(random.sample(range(5), random.randrange(6)))
+ s = ''
+ s += str(fill)
+ s += random.choice('<>=^')
+ for elem in active:
+ if elem == 0: # sign
+ s += random.choice('+- ')
+ elif elem == 1: # width
+ s += str(random.randrange(1, 100))
+ elif elem == 2: # thousands separator
+ s += ','
+ elif elem == 3: # prec
+ s += '.'
+ s += str(random.randrange(100))
+ elif elem == 4:
+ if 2 in active: c = 'EeGgFf%'
+ else: c = 'EeGgFfn%'
+ s += random.choice(c)
+ return s
+
+# Generate random format strings with random locale setting
+# [[fill]align][sign][#][0][width][,][.precision][type]
+def rand_locale():
+ try:
+ loc = random.choice(locale_list)
+ locale.setlocale(locale.LC_ALL, loc)
+ except locale.Error as err:
+ pass
+ active = sorted(random.sample(range(5), random.randrange(6)))
+ s = ''
+ have_align = 0
+ for elem in active:
+ if elem == 0: # fill+align
+ s += chr(random.randrange(32, 128))
+ s += random.choice('<>=^')
+ have_align = 1
+ elif elem == 1: # sign
+ s += random.choice('+- ')
+ elif elem == 2 and not have_align: # zeropad
+ s += '0'
+ elif elem == 3: # width
+ s += str(random.randrange(1, 100))
+ elif elem == 4: # prec
+ s += '.'
+ s += str(random.randrange(100))
+ s += 'n'
+ return s
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