| from test.support import verbose, TestFailed |
| import locale |
| import sys |
| import test.support as support |
| import unittest |
| |
| maxsize = support.MAX_Py_ssize_t |
| |
| # test string formatting operator (I am not sure if this is being tested |
| # elsewhere but, surely, some of the given cases are *not* tested because |
| # they crash python) |
| # test on unicode strings as well |
| |
| def testformat(formatstr, args, output=None, limit=None, overflowok=False): |
| if verbose: |
| if output: |
| print("{!a} % {!a} =? {!a} ...".format(formatstr, args, output), |
| end=' ') |
| else: |
| print("{!a} % {!a} works? ...".format(formatstr, args), end=' ') |
| try: |
| result = formatstr % args |
| except OverflowError: |
| if not overflowok: |
| raise |
| if verbose: |
| print('overflow (this is fine)') |
| else: |
| if output and limit is None and result != output: |
| if verbose: |
| print('no') |
| raise AssertionError("%r %% %r == %r != %r" % |
| (formatstr, args, result, output)) |
| # when 'limit' is specified, it determines how many characters |
| # must match exactly; lengths must always match. |
| # ex: limit=5, '12345678' matches '12345___' |
| # (mainly for floating point format tests for which an exact match |
| # can't be guaranteed due to rounding and representation errors) |
| elif output and limit is not None and ( |
| len(result)!=len(output) or result[:limit]!=output[:limit]): |
| if verbose: |
| print('no') |
| print("%s %% %s == %s != %s" % \ |
| (repr(formatstr), repr(args), repr(result), repr(output))) |
| else: |
| if verbose: |
| print('yes') |
| |
| |
| class FormatTest(unittest.TestCase): |
| def test_format(self): |
| testformat("%.1d", (1,), "1") |
| testformat("%.*d", (sys.maxsize,1), overflowok=True) # expect overflow |
| testformat("%.100d", (1,), '00000000000000000000000000000000000000' |
| '000000000000000000000000000000000000000000000000000000' |
| '00000001', overflowok=True) |
| testformat("%#.117x", (1,), '0x00000000000000000000000000000000000' |
| '000000000000000000000000000000000000000000000000000000' |
| '0000000000000000000000000001', |
| overflowok=True) |
| testformat("%#.118x", (1,), '0x00000000000000000000000000000000000' |
| '000000000000000000000000000000000000000000000000000000' |
| '00000000000000000000000000001', |
| overflowok=True) |
| |
| testformat("%f", (1.0,), "1.000000") |
| # these are trying to test the limits of the internal magic-number-length |
| # formatting buffer, if that number changes then these tests are less |
| # effective |
| testformat("%#.*g", (109, -1.e+49/3.)) |
| testformat("%#.*g", (110, -1.e+49/3.)) |
| testformat("%#.*g", (110, -1.e+100/3.)) |
| # test some ridiculously large precision, expect overflow |
| testformat('%12.*f', (123456, 1.0)) |
| |
| # check for internal overflow validation on length of precision |
| # these tests should no longer cause overflow in Python |
| # 2.7/3.1 and later. |
| testformat("%#.*g", (110, -1.e+100/3.)) |
| testformat("%#.*G", (110, -1.e+100/3.)) |
| testformat("%#.*f", (110, -1.e+100/3.)) |
| testformat("%#.*F", (110, -1.e+100/3.)) |
| # Formatting of integers. Overflow is not ok |
| testformat("%x", 10, "a") |
| testformat("%x", 100000000000, "174876e800") |
| testformat("%o", 10, "12") |
| testformat("%o", 100000000000, "1351035564000") |
| testformat("%d", 10, "10") |
| testformat("%d", 100000000000, "100000000000") |
| big = 123456789012345678901234567890 |
| testformat("%d", big, "123456789012345678901234567890") |
| testformat("%d", -big, "-123456789012345678901234567890") |
| testformat("%5d", -big, "-123456789012345678901234567890") |
| testformat("%31d", -big, "-123456789012345678901234567890") |
| testformat("%32d", -big, " -123456789012345678901234567890") |
| testformat("%-32d", -big, "-123456789012345678901234567890 ") |
| testformat("%032d", -big, "-0123456789012345678901234567890") |
| testformat("%-032d", -big, "-123456789012345678901234567890 ") |
| testformat("%034d", -big, "-000123456789012345678901234567890") |
| testformat("%034d", big, "0000123456789012345678901234567890") |
| testformat("%0+34d", big, "+000123456789012345678901234567890") |
| testformat("%+34d", big, " +123456789012345678901234567890") |
| testformat("%34d", big, " 123456789012345678901234567890") |
| testformat("%.2d", big, "123456789012345678901234567890") |
| testformat("%.30d", big, "123456789012345678901234567890") |
| testformat("%.31d", big, "0123456789012345678901234567890") |
| testformat("%32.31d", big, " 0123456789012345678901234567890") |
| testformat("%d", float(big), "123456________________________", 6) |
| big = 0x1234567890abcdef12345 # 21 hex digits |
| testformat("%x", big, "1234567890abcdef12345") |
| testformat("%x", -big, "-1234567890abcdef12345") |
| testformat("%5x", -big, "-1234567890abcdef12345") |
| testformat("%22x", -big, "-1234567890abcdef12345") |
| testformat("%23x", -big, " -1234567890abcdef12345") |
| testformat("%-23x", -big, "-1234567890abcdef12345 ") |
| testformat("%023x", -big, "-01234567890abcdef12345") |
| testformat("%-023x", -big, "-1234567890abcdef12345 ") |
| testformat("%025x", -big, "-0001234567890abcdef12345") |
| testformat("%025x", big, "00001234567890abcdef12345") |
| testformat("%0+25x", big, "+0001234567890abcdef12345") |
| testformat("%+25x", big, " +1234567890abcdef12345") |
| testformat("%25x", big, " 1234567890abcdef12345") |
| testformat("%.2x", big, "1234567890abcdef12345") |
| testformat("%.21x", big, "1234567890abcdef12345") |
| testformat("%.22x", big, "01234567890abcdef12345") |
| testformat("%23.22x", big, " 01234567890abcdef12345") |
| testformat("%-23.22x", big, "01234567890abcdef12345 ") |
| testformat("%X", big, "1234567890ABCDEF12345") |
| testformat("%#X", big, "0X1234567890ABCDEF12345") |
| testformat("%#x", big, "0x1234567890abcdef12345") |
| testformat("%#x", -big, "-0x1234567890abcdef12345") |
| testformat("%#.23x", -big, "-0x001234567890abcdef12345") |
| testformat("%#+.23x", big, "+0x001234567890abcdef12345") |
| testformat("%# .23x", big, " 0x001234567890abcdef12345") |
| testformat("%#+.23X", big, "+0X001234567890ABCDEF12345") |
| testformat("%#-+.23X", big, "+0X001234567890ABCDEF12345") |
| testformat("%#-+26.23X", big, "+0X001234567890ABCDEF12345") |
| testformat("%#-+27.23X", big, "+0X001234567890ABCDEF12345 ") |
| testformat("%#+27.23X", big, " +0X001234567890ABCDEF12345") |
| # next one gets two leading zeroes from precision, and another from the |
| # 0 flag and the width |
| testformat("%#+027.23X", big, "+0X0001234567890ABCDEF12345") |
| # same, except no 0 flag |
| testformat("%#+27.23X", big, " +0X001234567890ABCDEF12345") |
| testformat("%x", float(big), "123456_______________", 6) |
| big = 0o12345670123456701234567012345670 # 32 octal digits |
| testformat("%o", big, "12345670123456701234567012345670") |
| testformat("%o", -big, "-12345670123456701234567012345670") |
| testformat("%5o", -big, "-12345670123456701234567012345670") |
| testformat("%33o", -big, "-12345670123456701234567012345670") |
| testformat("%34o", -big, " -12345670123456701234567012345670") |
| testformat("%-34o", -big, "-12345670123456701234567012345670 ") |
| testformat("%034o", -big, "-012345670123456701234567012345670") |
| testformat("%-034o", -big, "-12345670123456701234567012345670 ") |
| testformat("%036o", -big, "-00012345670123456701234567012345670") |
| testformat("%036o", big, "000012345670123456701234567012345670") |
| testformat("%0+36o", big, "+00012345670123456701234567012345670") |
| testformat("%+36o", big, " +12345670123456701234567012345670") |
| testformat("%36o", big, " 12345670123456701234567012345670") |
| testformat("%.2o", big, "12345670123456701234567012345670") |
| testformat("%.32o", big, "12345670123456701234567012345670") |
| testformat("%.33o", big, "012345670123456701234567012345670") |
| testformat("%34.33o", big, " 012345670123456701234567012345670") |
| testformat("%-34.33o", big, "012345670123456701234567012345670 ") |
| testformat("%o", big, "12345670123456701234567012345670") |
| testformat("%#o", big, "0o12345670123456701234567012345670") |
| testformat("%#o", -big, "-0o12345670123456701234567012345670") |
| testformat("%#.34o", -big, "-0o0012345670123456701234567012345670") |
| testformat("%#+.34o", big, "+0o0012345670123456701234567012345670") |
| testformat("%# .34o", big, " 0o0012345670123456701234567012345670") |
| testformat("%#+.34o", big, "+0o0012345670123456701234567012345670") |
| testformat("%#-+.34o", big, "+0o0012345670123456701234567012345670") |
| testformat("%#-+37.34o", big, "+0o0012345670123456701234567012345670") |
| testformat("%#+37.34o", big, "+0o0012345670123456701234567012345670") |
| # next one gets one leading zero from precision |
| testformat("%.33o", big, "012345670123456701234567012345670") |
| # base marker shouldn't change that, since "0" is redundant |
| testformat("%#.33o", big, "0o012345670123456701234567012345670") |
| # but reduce precision, and base marker should add a zero |
| testformat("%#.32o", big, "0o12345670123456701234567012345670") |
| # one leading zero from precision, and another from "0" flag & width |
| testformat("%034.33o", big, "0012345670123456701234567012345670") |
| # base marker shouldn't change that |
| testformat("%0#34.33o", big, "0o012345670123456701234567012345670") |
| testformat("%o", float(big), "123456__________________________", 6) |
| # Some small ints, in both Python int and flavors). |
| testformat("%d", 42, "42") |
| testformat("%d", -42, "-42") |
| testformat("%d", 42, "42") |
| testformat("%d", -42, "-42") |
| testformat("%d", 42.0, "42") |
| testformat("%#x", 1, "0x1") |
| testformat("%#x", 1, "0x1") |
| testformat("%#X", 1, "0X1") |
| testformat("%#X", 1, "0X1") |
| testformat("%#x", 1.0, "0x1") |
| testformat("%#o", 1, "0o1") |
| testformat("%#o", 1, "0o1") |
| testformat("%#o", 0, "0o0") |
| testformat("%#o", 0, "0o0") |
| testformat("%o", 0, "0") |
| testformat("%o", 0, "0") |
| testformat("%d", 0, "0") |
| testformat("%d", 0, "0") |
| testformat("%#x", 0, "0x0") |
| testformat("%#x", 0, "0x0") |
| testformat("%#X", 0, "0X0") |
| testformat("%#X", 0, "0X0") |
| testformat("%x", 0x42, "42") |
| testformat("%x", -0x42, "-42") |
| testformat("%x", 0x42, "42") |
| testformat("%x", -0x42, "-42") |
| testformat("%x", float(0x42), "42") |
| testformat("%o", 0o42, "42") |
| testformat("%o", -0o42, "-42") |
| testformat("%o", 0o42, "42") |
| testformat("%o", -0o42, "-42") |
| testformat("%o", float(0o42), "42") |
| testformat("%r", "\u0378", "'\\u0378'") # non printable |
| testformat("%a", "\u0378", "'\\u0378'") # non printable |
| testformat("%r", "\u0374", "'\u0374'") # printable |
| testformat("%a", "\u0374", "'\\u0374'") # printable |
| |
| # alternate float formatting |
| testformat('%g', 1.1, '1.1') |
| testformat('%#g', 1.1, '1.10000') |
| |
| # Test exception for unknown format characters |
| if verbose: |
| print('Testing exceptions') |
| def test_exc(formatstr, args, exception, excmsg): |
| try: |
| testformat(formatstr, args) |
| except exception as exc: |
| if str(exc) == excmsg: |
| if verbose: |
| print("yes") |
| else: |
| if verbose: print('no') |
| print('Unexpected ', exception, ':', repr(str(exc))) |
| except: |
| if verbose: print('no') |
| print('Unexpected exception') |
| raise |
| else: |
| raise TestFailed('did not get expected exception: %s' % excmsg) |
| test_exc('abc %b', 1, ValueError, |
| "unsupported format character 'b' (0x62) at index 5") |
| #test_exc(unicode('abc %\u3000','raw-unicode-escape'), 1, ValueError, |
| # "unsupported format character '?' (0x3000) at index 5") |
| test_exc('%d', '1', TypeError, "%d format: a number is required, not str") |
| test_exc('%g', '1', TypeError, "a float is required") |
| test_exc('no format', '1', TypeError, |
| "not all arguments converted during string formatting") |
| test_exc('no format', '1', TypeError, |
| "not all arguments converted during string formatting") |
| |
| 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_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) |
| |
| |
| |
| def test_main(): |
| support.run_unittest(FormatTest) |
| |
| def test_precision(self): |
| INT_MAX = 2147483647 |
| |
| 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" % (INT_MAX + 1)) |
| self.assertEqual(str(cm.exception), "precision too big") |
| |
| c = complex(f) |
| self.assertEqual(format(f, ".0f"), "1") |
| self.assertEqual(format(f, ".3f"), "1.200") |
| with self.assertRaises(ValueError) as cm: |
| format(f, ".%sf" % (INT_MAX + 1)) |
| self.assertEqual(str(cm.exception), "precision too big") |
| |
| |
| if __name__ == "__main__": |
| unittest.main() |