374 lines
16 KiB
Python
374 lines
16 KiB
Python
import sys
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from test.test_support import verbose, have_unicode, TestFailed
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import test.test_support as test_support
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import unittest
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maxsize = test_support.MAX_Py_ssize_t
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# test string formatting operator (I am not sure if this is being tested
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# elsewhere but, surely, some of the given cases are *not* tested because
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# they crash python)
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# test on unicode strings as well
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def testformat(formatstr, args, output=None, limit=None, overflowok=False):
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if verbose:
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if output:
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print "%s %% %s =? %s ..." %\
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(repr(formatstr), repr(args), repr(output)),
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else:
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print "%s %% %s works? ..." % (repr(formatstr), repr(args)),
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try:
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result = formatstr % args
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except OverflowError:
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if not overflowok:
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raise
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if verbose:
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print 'overflow (this is fine)'
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else:
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if output and limit is None and result != output:
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if verbose:
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print 'no'
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raise AssertionError("%r %% %r == %r != %r" %
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(formatstr, args, result, output))
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# when 'limit' is specified, it determines how many characters
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# must match exactly; lengths must always match.
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# ex: limit=5, '12345678' matches '12345___'
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# (mainly for floating point format tests for which an exact match
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# can't be guaranteed due to rounding and representation errors)
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elif output and limit is not None and (
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len(result)!=len(output) or result[:limit]!=output[:limit]):
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if verbose:
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print 'no'
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print "%s %% %s == %s != %s" % \
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(repr(formatstr), repr(args), repr(result), repr(output))
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else:
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if verbose:
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print 'yes'
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def testboth(formatstr, *args, **kwargs):
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testformat(formatstr, *args, **kwargs)
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if have_unicode:
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testformat(unicode(formatstr), *args, **kwargs)
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class FormatTest(unittest.TestCase):
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def test_format(self):
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testboth("%.1d", (1,), "1")
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testboth("%.*d", (sys.maxint,1), overflowok=True) # expect overflow
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testboth("%.100d", (1,), '00000000000000000000000000000000000000'
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'000000000000000000000000000000000000000000000000000000'
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'00000001', overflowok=True)
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testboth("%#.117x", (1,), '0x00000000000000000000000000000000000'
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'000000000000000000000000000000000000000000000000000000'
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'0000000000000000000000000001',
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overflowok=True)
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testboth("%#.118x", (1,), '0x00000000000000000000000000000000000'
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'000000000000000000000000000000000000000000000000000000'
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'00000000000000000000000000001',
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overflowok=True)
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testboth("%f", (1.0,), "1.000000")
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# these are trying to test the limits of the internal magic-number-length
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# formatting buffer, if that number changes then these tests are less
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# effective
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testboth("%#.*g", (109, -1.e+49/3.))
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testboth("%#.*g", (110, -1.e+49/3.))
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testboth("%#.*g", (110, -1.e+100/3.))
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# test some ridiculously large precision, expect overflow
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testboth('%12.*f', (123456, 1.0))
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# check for internal overflow validation on length of precision
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# these tests should no longer cause overflow in Python
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# 2.7/3.1 and later.
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testboth("%#.*g", (110, -1.e+100/3.))
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testboth("%#.*G", (110, -1.e+100/3.))
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testboth("%#.*f", (110, -1.e+100/3.))
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testboth("%#.*F", (110, -1.e+100/3.))
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# Formatting of long integers. Overflow is not ok
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testboth("%x", 10L, "a")
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testboth("%x", 100000000000L, "174876e800")
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testboth("%o", 10L, "12")
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testboth("%o", 100000000000L, "1351035564000")
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testboth("%d", 10L, "10")
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testboth("%d", 100000000000L, "100000000000")
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big = 123456789012345678901234567890L
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testboth("%d", big, "123456789012345678901234567890")
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testboth("%d", -big, "-123456789012345678901234567890")
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testboth("%5d", -big, "-123456789012345678901234567890")
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testboth("%31d", -big, "-123456789012345678901234567890")
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testboth("%32d", -big, " -123456789012345678901234567890")
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testboth("%-32d", -big, "-123456789012345678901234567890 ")
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testboth("%032d", -big, "-0123456789012345678901234567890")
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testboth("%-032d", -big, "-123456789012345678901234567890 ")
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testboth("%034d", -big, "-000123456789012345678901234567890")
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testboth("%034d", big, "0000123456789012345678901234567890")
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testboth("%0+34d", big, "+000123456789012345678901234567890")
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testboth("%+34d", big, " +123456789012345678901234567890")
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testboth("%34d", big, " 123456789012345678901234567890")
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testboth("%.2d", big, "123456789012345678901234567890")
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testboth("%.30d", big, "123456789012345678901234567890")
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testboth("%.31d", big, "0123456789012345678901234567890")
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testboth("%32.31d", big, " 0123456789012345678901234567890")
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testboth("%d", float(big), "123456________________________", 6)
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big = 0x1234567890abcdef12345L # 21 hex digits
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testboth("%x", big, "1234567890abcdef12345")
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testboth("%x", -big, "-1234567890abcdef12345")
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testboth("%5x", -big, "-1234567890abcdef12345")
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testboth("%22x", -big, "-1234567890abcdef12345")
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testboth("%23x", -big, " -1234567890abcdef12345")
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testboth("%-23x", -big, "-1234567890abcdef12345 ")
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testboth("%023x", -big, "-01234567890abcdef12345")
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testboth("%-023x", -big, "-1234567890abcdef12345 ")
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testboth("%025x", -big, "-0001234567890abcdef12345")
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testboth("%025x", big, "00001234567890abcdef12345")
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testboth("%0+25x", big, "+0001234567890abcdef12345")
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testboth("%+25x", big, " +1234567890abcdef12345")
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testboth("%25x", big, " 1234567890abcdef12345")
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testboth("%.2x", big, "1234567890abcdef12345")
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testboth("%.21x", big, "1234567890abcdef12345")
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testboth("%.22x", big, "01234567890abcdef12345")
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testboth("%23.22x", big, " 01234567890abcdef12345")
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testboth("%-23.22x", big, "01234567890abcdef12345 ")
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testboth("%X", big, "1234567890ABCDEF12345")
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testboth("%#X", big, "0X1234567890ABCDEF12345")
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testboth("%#x", big, "0x1234567890abcdef12345")
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testboth("%#x", -big, "-0x1234567890abcdef12345")
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testboth("%#.23x", -big, "-0x001234567890abcdef12345")
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testboth("%#+.23x", big, "+0x001234567890abcdef12345")
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testboth("%# .23x", big, " 0x001234567890abcdef12345")
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testboth("%#+.23X", big, "+0X001234567890ABCDEF12345")
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testboth("%#-+.23X", big, "+0X001234567890ABCDEF12345")
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testboth("%#-+26.23X", big, "+0X001234567890ABCDEF12345")
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testboth("%#-+27.23X", big, "+0X001234567890ABCDEF12345 ")
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testboth("%#+27.23X", big, " +0X001234567890ABCDEF12345")
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# next one gets two leading zeroes from precision, and another from the
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# 0 flag and the width
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testboth("%#+027.23X", big, "+0X0001234567890ABCDEF12345")
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# same, except no 0 flag
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testboth("%#+27.23X", big, " +0X001234567890ABCDEF12345")
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testboth("%x", float(big), "123456_______________", 6)
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big = 012345670123456701234567012345670L # 32 octal digits
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testboth("%o", big, "12345670123456701234567012345670")
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testboth("%o", -big, "-12345670123456701234567012345670")
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testboth("%5o", -big, "-12345670123456701234567012345670")
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testboth("%33o", -big, "-12345670123456701234567012345670")
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testboth("%34o", -big, " -12345670123456701234567012345670")
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testboth("%-34o", -big, "-12345670123456701234567012345670 ")
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testboth("%034o", -big, "-012345670123456701234567012345670")
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testboth("%-034o", -big, "-12345670123456701234567012345670 ")
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testboth("%036o", -big, "-00012345670123456701234567012345670")
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testboth("%036o", big, "000012345670123456701234567012345670")
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testboth("%0+36o", big, "+00012345670123456701234567012345670")
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testboth("%+36o", big, " +12345670123456701234567012345670")
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testboth("%36o", big, " 12345670123456701234567012345670")
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testboth("%.2o", big, "12345670123456701234567012345670")
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testboth("%.32o", big, "12345670123456701234567012345670")
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testboth("%.33o", big, "012345670123456701234567012345670")
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testboth("%34.33o", big, " 012345670123456701234567012345670")
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testboth("%-34.33o", big, "012345670123456701234567012345670 ")
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testboth("%o", big, "12345670123456701234567012345670")
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testboth("%#o", big, "012345670123456701234567012345670")
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testboth("%#o", -big, "-012345670123456701234567012345670")
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testboth("%#.34o", -big, "-0012345670123456701234567012345670")
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testboth("%#+.34o", big, "+0012345670123456701234567012345670")
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testboth("%# .34o", big, " 0012345670123456701234567012345670")
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testboth("%#+.34o", big, "+0012345670123456701234567012345670")
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testboth("%#-+.34o", big, "+0012345670123456701234567012345670")
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testboth("%#-+37.34o", big, "+0012345670123456701234567012345670 ")
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testboth("%#+37.34o", big, " +0012345670123456701234567012345670")
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# next one gets one leading zero from precision
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testboth("%.33o", big, "012345670123456701234567012345670")
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# base marker shouldn't change that, since "0" is redundant
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testboth("%#.33o", big, "012345670123456701234567012345670")
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# but reduce precision, and base marker should add a zero
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testboth("%#.32o", big, "012345670123456701234567012345670")
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# one leading zero from precision, and another from "0" flag & width
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testboth("%034.33o", big, "0012345670123456701234567012345670")
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# base marker shouldn't change that
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testboth("%0#34.33o", big, "0012345670123456701234567012345670")
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testboth("%o", float(big), "123456__________________________", 6)
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# Some small ints, in both Python int and long flavors).
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testboth("%d", 42, "42")
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testboth("%d", -42, "-42")
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testboth("%d", 42L, "42")
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testboth("%d", -42L, "-42")
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testboth("%d", 42.0, "42")
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testboth("%#x", 1, "0x1")
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testboth("%#x", 1L, "0x1")
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testboth("%#X", 1, "0X1")
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testboth("%#X", 1L, "0X1")
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testboth("%#x", 1.0, "0x1")
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testboth("%#o", 1, "01")
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testboth("%#o", 1L, "01")
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testboth("%#o", 0, "0")
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testboth("%#o", 0L, "0")
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testboth("%o", 0, "0")
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testboth("%o", 0L, "0")
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testboth("%d", 0, "0")
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testboth("%d", 0L, "0")
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testboth("%#x", 0, "0x0")
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testboth("%#x", 0L, "0x0")
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testboth("%#X", 0, "0X0")
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testboth("%#X", 0L, "0X0")
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testboth("%x", 0x42, "42")
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testboth("%x", -0x42, "-42")
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testboth("%x", 0x42L, "42")
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testboth("%x", -0x42L, "-42")
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testboth("%x", float(0x42), "42")
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testboth("%o", 042, "42")
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testboth("%o", -042, "-42")
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testboth("%o", 042L, "42")
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testboth("%o", -042L, "-42")
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testboth("%o", float(042), "42")
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# alternate float formatting
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testformat('%g', 1.1, '1.1')
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testformat('%#g', 1.1, '1.10000')
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# Regression test for http://bugs.python.org/issue15516.
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class IntFails(object):
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def __int__(self):
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raise TestFailed
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def __long__(self):
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return 0
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fst = IntFails()
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testformat("%x", fst, '0')
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testformat(u"%x", fst, '0')
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# Test exception for unknown format characters
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if verbose:
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print 'Testing exceptions'
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def test_exc(formatstr, args, exception, excmsg):
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try:
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testformat(formatstr, args)
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except exception, exc:
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if str(exc) == excmsg:
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if verbose:
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print "yes"
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else:
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if verbose: print 'no'
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print 'Unexpected ', exception, ':', repr(str(exc))
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except:
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if verbose: print 'no'
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print 'Unexpected exception'
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raise
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else:
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raise TestFailed, 'did not get expected exception: %s' % excmsg
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test_exc('abc %a', 1, ValueError,
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"unsupported format character 'a' (0x61) at index 5")
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if have_unicode:
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test_exc(unicode('abc %\u3000','raw-unicode-escape'), 1, ValueError,
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"unsupported format character '?' (0x3000) at index 5")
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test_exc('%d', '1', TypeError, "%d format: a number is required, not str")
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test_exc('%g', '1', TypeError, "float argument required, not str")
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test_exc('no format', '1', TypeError,
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"not all arguments converted during string formatting")
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test_exc('no format', u'1', TypeError,
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"not all arguments converted during string formatting")
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test_exc(u'no format', '1', TypeError,
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"not all arguments converted during string formatting")
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test_exc(u'no format', u'1', TypeError,
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"not all arguments converted during string formatting")
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class Foobar(long):
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def __oct__(self):
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# Returning a non-string should not blow up.
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return self + 1
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test_exc('%o', Foobar(), TypeError,
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"expected string or Unicode object, long found")
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if maxsize == 2**31-1:
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# crashes 2.2.1 and earlier:
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try:
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"%*d"%(maxsize, -127)
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except MemoryError:
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pass
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else:
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raise TestFailed, '"%*d"%(maxsize, -127) should fail'
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def test_invalid_special_methods(self):
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tests = []
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for f in 'sriduoxXfge':
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tests.append(('%' + f, 1, TypeError))
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tests.append(('%#' + f, 1, TypeError))
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for r in ['', '-', 'L', '-L']:
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for f in 'iduoxX':
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tests.append(('%' + f, r, ValueError))
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tests.append(('%#' + f, r, ValueError))
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tests.append(('%o', 'abc', ValueError))
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for r in ('abc', '0abc', '0x', '0xL'):
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for f in 'xX':
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tests.append(('%' + f, r, ValueError))
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for r in ('0x', '0xL'):
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for f in 'xX':
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tests.append(('%#' + f, r, ValueError))
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class X(long):
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def __repr__(self):
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return result
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def __str__(self):
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return result
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def __oct__(self):
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return result
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def __hex__(self):
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return result
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def __float__(self):
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return result
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for fmt, result, exc in tests:
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try:
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fmt % X()
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except exc:
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pass
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else:
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self.fail('%s not raised for %r format of %r' %
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(exc.__name__, fmt, result))
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def test_main():
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test_support.run_unittest(FormatTest)
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def test_precision(self):
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f = 1.2
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self.assertEqual(format(f, ".0f"), "1")
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self.assertEqual(format(f, ".3f"), "1.200")
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with self.assertRaises(ValueError) as cm:
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format(f, ".%sf" % (sys.maxsize + 1))
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self.assertEqual(str(cm.exception), "precision too big")
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c = complex(f)
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self.assertEqual(format(c, ".0f"), "1+0j")
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self.assertEqual(format(c, ".3f"), "1.200+0.000j")
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with self.assertRaises(ValueError) as cm:
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format(c, ".%sf" % (sys.maxsize + 1))
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self.assertEqual(str(cm.exception), "precision too big")
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@test_support.cpython_only
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def test_precision_c_limits(self):
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from _testcapi import INT_MAX
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f = 1.2
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with self.assertRaises(ValueError) as cm:
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format(f, ".%sf" % (INT_MAX + 1))
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c = complex(f)
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with self.assertRaises(ValueError) as cm:
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format(c, ".%sf" % (INT_MAX + 1))
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if __name__ == "__main__":
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unittest.main()
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