521 lines
24 KiB
Python
521 lines
24 KiB
Python
from test.support import verbose, TestFailed
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import locale
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import sys
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import re
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import test.support as support
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import unittest
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maxsize = 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 bytes object 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("{!a} % {!a} =? {!a} ...".format(formatstr, args, output),
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end=' ')
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else:
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print("{!a} % {!a} works? ...".format(formatstr, args), end=' ')
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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 testcommon(formatstr, args, output=None, limit=None, overflowok=False):
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# if formatstr is a str, test str, bytes, and bytearray;
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# otherwise, test bytes and bytearray
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if isinstance(formatstr, str):
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testformat(formatstr, args, output, limit, overflowok)
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b_format = formatstr.encode('ascii')
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else:
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b_format = formatstr
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ba_format = bytearray(b_format)
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b_args = []
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if not isinstance(args, tuple):
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args = (args, )
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b_args = tuple(args)
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if output is None:
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b_output = ba_output = None
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else:
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if isinstance(output, str):
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b_output = output.encode('ascii')
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else:
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b_output = output
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ba_output = bytearray(b_output)
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testformat(b_format, b_args, b_output, limit, overflowok)
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testformat(ba_format, b_args, ba_output, limit, overflowok)
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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 as 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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def test_exc_common(formatstr, args, exception, excmsg):
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# test str and bytes
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test_exc(formatstr, args, exception, excmsg)
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test_exc(formatstr.encode('ascii'), args, exception, excmsg)
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class FormatTest(unittest.TestCase):
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def test_common_format(self):
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# test the format identifiers that work the same across
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# str, bytes, and bytearrays (integer, float, oct, hex)
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testcommon("%%", (), "%")
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testcommon("%.1d", (1,), "1")
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testcommon("%.*d", (sys.maxsize,1), overflowok=True) # expect overflow
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testcommon("%.100d", (1,), '00000000000000000000000000000000000000'
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'000000000000000000000000000000000000000000000000000000'
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'00000001', overflowok=True)
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testcommon("%#.117x", (1,), '0x00000000000000000000000000000000000'
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'000000000000000000000000000000000000000000000000000000'
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'0000000000000000000000000001',
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overflowok=True)
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testcommon("%#.118x", (1,), '0x00000000000000000000000000000000000'
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'000000000000000000000000000000000000000000000000000000'
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'00000000000000000000000000001',
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overflowok=True)
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testcommon("%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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testcommon("%#.*g", (109, -1.e+49/3.))
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testcommon("%#.*g", (110, -1.e+49/3.))
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testcommon("%#.*g", (110, -1.e+100/3.))
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# test some ridiculously large precision, expect overflow
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testcommon('%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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testcommon("%#.*g", (110, -1.e+100/3.))
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testcommon("%#.*G", (110, -1.e+100/3.))
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testcommon("%#.*f", (110, -1.e+100/3.))
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testcommon("%#.*F", (110, -1.e+100/3.))
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# Formatting of integers. Overflow is not ok
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testcommon("%x", 10, "a")
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testcommon("%x", 100000000000, "174876e800")
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testcommon("%o", 10, "12")
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testcommon("%o", 100000000000, "1351035564000")
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testcommon("%d", 10, "10")
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testcommon("%d", 100000000000, "100000000000")
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big = 123456789012345678901234567890
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testcommon("%d", big, "123456789012345678901234567890")
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testcommon("%d", -big, "-123456789012345678901234567890")
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testcommon("%5d", -big, "-123456789012345678901234567890")
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testcommon("%31d", -big, "-123456789012345678901234567890")
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testcommon("%32d", -big, " -123456789012345678901234567890")
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testcommon("%-32d", -big, "-123456789012345678901234567890 ")
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testcommon("%032d", -big, "-0123456789012345678901234567890")
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testcommon("%-032d", -big, "-123456789012345678901234567890 ")
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testcommon("%034d", -big, "-000123456789012345678901234567890")
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testcommon("%034d", big, "0000123456789012345678901234567890")
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testcommon("%0+34d", big, "+000123456789012345678901234567890")
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testcommon("%+34d", big, " +123456789012345678901234567890")
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testcommon("%34d", big, " 123456789012345678901234567890")
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testcommon("%.2d", big, "123456789012345678901234567890")
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testcommon("%.30d", big, "123456789012345678901234567890")
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testcommon("%.31d", big, "0123456789012345678901234567890")
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testcommon("%32.31d", big, " 0123456789012345678901234567890")
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testcommon("%d", float(big), "123456________________________", 6)
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big = 0x1234567890abcdef12345 # 21 hex digits
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testcommon("%x", big, "1234567890abcdef12345")
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testcommon("%x", -big, "-1234567890abcdef12345")
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testcommon("%5x", -big, "-1234567890abcdef12345")
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testcommon("%22x", -big, "-1234567890abcdef12345")
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testcommon("%23x", -big, " -1234567890abcdef12345")
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testcommon("%-23x", -big, "-1234567890abcdef12345 ")
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testcommon("%023x", -big, "-01234567890abcdef12345")
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testcommon("%-023x", -big, "-1234567890abcdef12345 ")
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testcommon("%025x", -big, "-0001234567890abcdef12345")
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testcommon("%025x", big, "00001234567890abcdef12345")
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testcommon("%0+25x", big, "+0001234567890abcdef12345")
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testcommon("%+25x", big, " +1234567890abcdef12345")
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testcommon("%25x", big, " 1234567890abcdef12345")
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testcommon("%.2x", big, "1234567890abcdef12345")
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testcommon("%.21x", big, "1234567890abcdef12345")
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testcommon("%.22x", big, "01234567890abcdef12345")
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testcommon("%23.22x", big, " 01234567890abcdef12345")
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testcommon("%-23.22x", big, "01234567890abcdef12345 ")
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testcommon("%X", big, "1234567890ABCDEF12345")
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testcommon("%#X", big, "0X1234567890ABCDEF12345")
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testcommon("%#x", big, "0x1234567890abcdef12345")
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testcommon("%#x", -big, "-0x1234567890abcdef12345")
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testcommon("%#27x", big, " 0x1234567890abcdef12345")
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testcommon("%#-27x", big, "0x1234567890abcdef12345 ")
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testcommon("%#027x", big, "0x00001234567890abcdef12345")
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testcommon("%#.23x", big, "0x001234567890abcdef12345")
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testcommon("%#.23x", -big, "-0x001234567890abcdef12345")
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testcommon("%#27.23x", big, " 0x001234567890abcdef12345")
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testcommon("%#-27.23x", big, "0x001234567890abcdef12345 ")
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testcommon("%#027.23x", big, "0x00001234567890abcdef12345")
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testcommon("%#+.23x", big, "+0x001234567890abcdef12345")
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testcommon("%# .23x", big, " 0x001234567890abcdef12345")
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testcommon("%#+.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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testcommon("%#+027.23X", big, "+0X0001234567890ABCDEF12345")
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testcommon("%# 027.23X", big, " 0X0001234567890ABCDEF12345")
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# same, except no 0 flag
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testcommon("%#+27.23X", big, " +0X001234567890ABCDEF12345")
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testcommon("%#-+27.23x", big, "+0x001234567890abcdef12345 ")
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testcommon("%#- 27.23x", big, " 0x001234567890abcdef12345 ")
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big = 0o12345670123456701234567012345670 # 32 octal digits
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testcommon("%o", big, "12345670123456701234567012345670")
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testcommon("%o", -big, "-12345670123456701234567012345670")
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testcommon("%5o", -big, "-12345670123456701234567012345670")
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testcommon("%33o", -big, "-12345670123456701234567012345670")
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testcommon("%34o", -big, " -12345670123456701234567012345670")
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testcommon("%-34o", -big, "-12345670123456701234567012345670 ")
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testcommon("%034o", -big, "-012345670123456701234567012345670")
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testcommon("%-034o", -big, "-12345670123456701234567012345670 ")
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testcommon("%036o", -big, "-00012345670123456701234567012345670")
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testcommon("%036o", big, "000012345670123456701234567012345670")
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testcommon("%0+36o", big, "+00012345670123456701234567012345670")
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testcommon("%+36o", big, " +12345670123456701234567012345670")
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testcommon("%36o", big, " 12345670123456701234567012345670")
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testcommon("%.2o", big, "12345670123456701234567012345670")
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testcommon("%.32o", big, "12345670123456701234567012345670")
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testcommon("%.33o", big, "012345670123456701234567012345670")
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testcommon("%34.33o", big, " 012345670123456701234567012345670")
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testcommon("%-34.33o", big, "012345670123456701234567012345670 ")
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testcommon("%o", big, "12345670123456701234567012345670")
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testcommon("%#o", big, "0o12345670123456701234567012345670")
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testcommon("%#o", -big, "-0o12345670123456701234567012345670")
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testcommon("%#38o", big, " 0o12345670123456701234567012345670")
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testcommon("%#-38o", big, "0o12345670123456701234567012345670 ")
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testcommon("%#038o", big, "0o000012345670123456701234567012345670")
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testcommon("%#.34o", big, "0o0012345670123456701234567012345670")
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testcommon("%#.34o", -big, "-0o0012345670123456701234567012345670")
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testcommon("%#38.34o", big, " 0o0012345670123456701234567012345670")
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testcommon("%#-38.34o", big, "0o0012345670123456701234567012345670 ")
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testcommon("%#038.34o", big, "0o000012345670123456701234567012345670")
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testcommon("%#+.34o", big, "+0o0012345670123456701234567012345670")
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testcommon("%# .34o", big, " 0o0012345670123456701234567012345670")
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testcommon("%#+38.34o", big, " +0o0012345670123456701234567012345670")
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testcommon("%#-+38.34o", big, "+0o0012345670123456701234567012345670 ")
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testcommon("%#- 38.34o", big, " 0o0012345670123456701234567012345670 ")
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testcommon("%#+038.34o", big, "+0o00012345670123456701234567012345670")
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testcommon("%# 038.34o", big, " 0o00012345670123456701234567012345670")
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# next one gets one leading zero from precision
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testcommon("%.33o", big, "012345670123456701234567012345670")
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# base marker added in spite of leading zero (different to Python 2)
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testcommon("%#.33o", big, "0o012345670123456701234567012345670")
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# reduce precision, and base marker is always added
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testcommon("%#.32o", big, "0o12345670123456701234567012345670")
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# one leading zero from precision, plus two from "0" flag & width
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testcommon("%035.33o", big, "00012345670123456701234567012345670")
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# base marker shouldn't change the size
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testcommon("%0#35.33o", big, "0o012345670123456701234567012345670")
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# Some small ints, in both Python int and flavors).
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testcommon("%d", 42, "42")
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testcommon("%d", -42, "-42")
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testcommon("%d", 42.0, "42")
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testcommon("%#x", 1, "0x1")
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testcommon("%#X", 1, "0X1")
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testcommon("%#o", 1, "0o1")
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testcommon("%#o", 0, "0o0")
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testcommon("%o", 0, "0")
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testcommon("%d", 0, "0")
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testcommon("%#x", 0, "0x0")
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testcommon("%#X", 0, "0X0")
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testcommon("%x", 0x42, "42")
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testcommon("%x", -0x42, "-42")
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testcommon("%o", 0o42, "42")
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testcommon("%o", -0o42, "-42")
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# alternate float formatting
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testcommon('%g', 1.1, '1.1')
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testcommon('%#g', 1.1, '1.10000')
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if verbose:
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print('Testing exceptions')
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test_exc_common('%', (), ValueError, "incomplete format")
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test_exc_common('% %s', 1, ValueError,
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"unsupported format character '%' (0x25) at index 2")
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test_exc_common('%d', '1', TypeError,
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"%d format: a number is required, not str")
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test_exc_common('%d', b'1', TypeError,
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"%d format: a number is required, not bytes")
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test_exc_common('%x', '1', TypeError,
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"%x format: an integer is required, not str")
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test_exc_common('%x', 3.14, TypeError,
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"%x format: an integer is required, not float")
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def test_str_format(self):
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testformat("%r", "\u0378", "'\\u0378'") # non printable
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testformat("%a", "\u0378", "'\\u0378'") # non printable
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testformat("%r", "\u0374", "'\u0374'") # printable
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testformat("%a", "\u0374", "'\\u0374'") # printable
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# Test exception for unknown format characters, etc.
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if verbose:
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print('Testing exceptions')
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test_exc('abc %b', 1, ValueError,
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"unsupported format character 'b' (0x62) at index 5")
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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('%g', '1', TypeError, "must be real number, 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('%c', -1, OverflowError, "%c arg not in range(0x110000)")
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test_exc('%c', sys.maxunicode+1, OverflowError,
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"%c arg not in range(0x110000)")
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#test_exc('%c', 2**128, OverflowError, "%c arg not in range(0x110000)")
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test_exc('%c', 3.14, TypeError, "%c requires int or char")
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test_exc('%c', 'ab', TypeError, "%c requires int or char")
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test_exc('%c', b'x', TypeError, "%c requires int or char")
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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_bytes_and_bytearray_format(self):
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# %c will insert a single byte, either from an int in range(256), or
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# from a bytes argument of length 1, not from a str.
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testcommon(b"%c", 7, b"\x07")
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testcommon(b"%c", b"Z", b"Z")
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testcommon(b"%c", bytearray(b"Z"), b"Z")
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testcommon(b"%5c", 65, b" A")
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testcommon(b"%-5c", 65, b"A ")
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# %b will insert a series of bytes, either from a type that supports
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# the Py_buffer protocol, or something that has a __bytes__ method
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class FakeBytes(object):
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def __bytes__(self):
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return b'123'
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fb = FakeBytes()
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testcommon(b"%b", b"abc", b"abc")
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testcommon(b"%b", bytearray(b"def"), b"def")
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testcommon(b"%b", fb, b"123")
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testcommon(b"%b", memoryview(b"abc"), b"abc")
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# # %s is an alias for %b -- should only be used for Py2/3 code
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testcommon(b"%s", b"abc", b"abc")
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testcommon(b"%s", bytearray(b"def"), b"def")
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testcommon(b"%s", fb, b"123")
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testcommon(b"%s", memoryview(b"abc"), b"abc")
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# %a will give the equivalent of
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# repr(some_obj).encode('ascii', 'backslashreplace')
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testcommon(b"%a", 3.14, b"3.14")
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testcommon(b"%a", b"ghi", b"b'ghi'")
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testcommon(b"%a", "jkl", b"'jkl'")
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testcommon(b"%a", "\u0544", b"'\\u0544'")
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# %r is an alias for %a
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testcommon(b"%r", 3.14, b"3.14")
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testcommon(b"%r", b"ghi", b"b'ghi'")
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testcommon(b"%r", "jkl", b"'jkl'")
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testcommon(b"%r", "\u0544", b"'\\u0544'")
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# Test exception for unknown format characters, etc.
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if verbose:
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print('Testing exceptions')
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test_exc(b'%g', '1', TypeError, "float argument required, not str")
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test_exc(b'%g', b'1', TypeError, "float argument required, not bytes")
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test_exc(b'no format', 7, TypeError,
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"not all arguments converted during bytes formatting")
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test_exc(b'no format', b'1', TypeError,
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"not all arguments converted during bytes formatting")
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test_exc(b'no format', bytearray(b'1'), TypeError,
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"not all arguments converted during bytes formatting")
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test_exc(b"%c", -1, OverflowError,
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"%c arg not in range(256)")
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test_exc(b"%c", 256, OverflowError,
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"%c arg not in range(256)")
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test_exc(b"%c", 2**128, OverflowError,
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"%c arg not in range(256)")
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test_exc(b"%c", b"Za", TypeError,
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"%c requires an integer in range(256) or a single byte")
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test_exc(b"%c", "Y", TypeError,
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"%c requires an integer in range(256) or a single byte")
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test_exc(b"%c", 3.14, TypeError,
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"%c requires an integer in range(256) or a single byte")
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test_exc(b"%b", "Xc", TypeError,
|
|
"%b requires a bytes-like object, "
|
|
"or an object that implements __bytes__, not 'str'")
|
|
test_exc(b"%s", "Wd", TypeError,
|
|
"%b requires a bytes-like object, "
|
|
"or an object that implements __bytes__, not 'str'")
|
|
|
|
if maxsize == 2**31-1:
|
|
# crashes 2.2.1 and earlier:
|
|
try:
|
|
"%*d"%(maxsize, -127)
|
|
except MemoryError:
|
|
pass
|
|
else:
|
|
raise TestFailed('"%*d"%(maxsize, -127) should fail')
|
|
|
|
def test_nul(self):
|
|
# test the null character
|
|
testcommon("a\0b", (), 'a\0b')
|
|
testcommon("a%cb", (0,), 'a\0b')
|
|
testformat("a%sb", ('c\0d',), 'ac\0db')
|
|
testcommon(b"a%sb", (b'c\0d',), b'ac\0db')
|
|
|
|
def test_non_ascii(self):
|
|
testformat("\u20ac=%f", (1.0,), "\u20ac=1.000000")
|
|
|
|
self.assertEqual(format("abc", "\u2007<5"), "abc\u2007\u2007")
|
|
self.assertEqual(format(123, "\u2007<5"), "123\u2007\u2007")
|
|
self.assertEqual(format(12.3, "\u2007<6"), "12.3\u2007\u2007")
|
|
self.assertEqual(format(0j, "\u2007<4"), "0j\u2007\u2007")
|
|
self.assertEqual(format(1+2j, "\u2007<8"), "(1+2j)\u2007\u2007")
|
|
|
|
self.assertEqual(format("abc", "\u2007>5"), "\u2007\u2007abc")
|
|
self.assertEqual(format(123, "\u2007>5"), "\u2007\u2007123")
|
|
self.assertEqual(format(12.3, "\u2007>6"), "\u2007\u200712.3")
|
|
self.assertEqual(format(1+2j, "\u2007>8"), "\u2007\u2007(1+2j)")
|
|
self.assertEqual(format(0j, "\u2007>4"), "\u2007\u20070j")
|
|
|
|
self.assertEqual(format("abc", "\u2007^5"), "\u2007abc\u2007")
|
|
self.assertEqual(format(123, "\u2007^5"), "\u2007123\u2007")
|
|
self.assertEqual(format(12.3, "\u2007^6"), "\u200712.3\u2007")
|
|
self.assertEqual(format(1+2j, "\u2007^8"), "\u2007(1+2j)\u2007")
|
|
self.assertEqual(format(0j, "\u2007^4"), "\u20070j\u2007")
|
|
|
|
def test_locale(self):
|
|
try:
|
|
oldloc = locale.setlocale(locale.LC_ALL)
|
|
locale.setlocale(locale.LC_ALL, '')
|
|
except locale.Error as err:
|
|
self.skipTest("Cannot set locale: {}".format(err))
|
|
try:
|
|
localeconv = locale.localeconv()
|
|
sep = localeconv['thousands_sep']
|
|
point = localeconv['decimal_point']
|
|
|
|
text = format(123456789, "n")
|
|
self.assertIn(sep, text)
|
|
self.assertEqual(text.replace(sep, ''), '123456789')
|
|
|
|
text = format(1234.5, "n")
|
|
self.assertIn(sep, text)
|
|
self.assertIn(point, text)
|
|
self.assertEqual(text.replace(sep, ''), '1234' + point + '5')
|
|
finally:
|
|
locale.setlocale(locale.LC_ALL, oldloc)
|
|
|
|
@support.cpython_only
|
|
def test_optimisations(self):
|
|
text = "abcde" # 5 characters
|
|
|
|
self.assertIs("%s" % text, text)
|
|
self.assertIs("%.5s" % text, text)
|
|
self.assertIs("%.10s" % text, text)
|
|
self.assertIs("%1s" % text, text)
|
|
self.assertIs("%5s" % text, text)
|
|
|
|
self.assertIs("{0}".format(text), text)
|
|
self.assertIs("{0:s}".format(text), text)
|
|
self.assertIs("{0:.5s}".format(text), text)
|
|
self.assertIs("{0:.10s}".format(text), text)
|
|
self.assertIs("{0:1s}".format(text), text)
|
|
self.assertIs("{0:5s}".format(text), text)
|
|
|
|
self.assertIs(text % (), text)
|
|
self.assertIs(text.format(), text)
|
|
|
|
def test_precision(self):
|
|
f = 1.2
|
|
self.assertEqual(format(f, ".0f"), "1")
|
|
self.assertEqual(format(f, ".3f"), "1.200")
|
|
with self.assertRaises(ValueError) as cm:
|
|
format(f, ".%sf" % (sys.maxsize + 1))
|
|
|
|
c = complex(f)
|
|
self.assertEqual(format(c, ".0f"), "1+0j")
|
|
self.assertEqual(format(c, ".3f"), "1.200+0.000j")
|
|
with self.assertRaises(ValueError) as cm:
|
|
format(c, ".%sf" % (sys.maxsize + 1))
|
|
|
|
@support.cpython_only
|
|
def test_precision_c_limits(self):
|
|
from _testcapi import INT_MAX
|
|
|
|
f = 1.2
|
|
with self.assertRaises(ValueError) as cm:
|
|
format(f, ".%sf" % (INT_MAX + 1))
|
|
|
|
c = complex(f)
|
|
with self.assertRaises(ValueError) as cm:
|
|
format(c, ".%sf" % (INT_MAX + 1))
|
|
|
|
def test_g_format_has_no_trailing_zeros(self):
|
|
# regression test for bugs.python.org/issue40780
|
|
self.assertEqual("%.3g" % 1505.0, "1.5e+03")
|
|
self.assertEqual("%#.3g" % 1505.0, "1.50e+03")
|
|
|
|
self.assertEqual(format(1505.0, ".3g"), "1.5e+03")
|
|
self.assertEqual(format(1505.0, "#.3g"), "1.50e+03")
|
|
|
|
self.assertEqual(format(12300050.0, ".6g"), "1.23e+07")
|
|
self.assertEqual(format(12300050.0, "#.6g"), "1.23000e+07")
|
|
|
|
def test_with_two_commas_in_format_specifier(self):
|
|
error_msg = re.escape("Cannot specify ',' with ','.")
|
|
with self.assertRaisesRegex(ValueError, error_msg):
|
|
'{:,,}'.format(1)
|
|
|
|
def test_with_two_underscore_in_format_specifier(self):
|
|
error_msg = re.escape("Cannot specify '_' with '_'.")
|
|
with self.assertRaisesRegex(ValueError, error_msg):
|
|
'{:__}'.format(1)
|
|
|
|
def test_with_a_commas_and_an_underscore_in_format_specifier(self):
|
|
error_msg = re.escape("Cannot specify both ',' and '_'.")
|
|
with self.assertRaisesRegex(ValueError, error_msg):
|
|
'{:,_}'.format(1)
|
|
|
|
def test_with_an_underscore_and_a_comma_in_format_specifier(self):
|
|
error_msg = re.escape("Cannot specify both ',' and '_'.")
|
|
with self.assertRaisesRegex(ValueError, error_msg):
|
|
'{:_,}'.format(1)
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|