| from test.support import verbose, TestFailed |
| import locale |
| import sys |
| import re |
| 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 bytes object 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') |
| |
| def testcommon(formatstr, args, output=None, limit=None, overflowok=False): |
| # if formatstr is a str, test str, bytes, and bytearray; |
| # otherwise, test bytes and bytearray |
| if isinstance(formatstr, str): |
| testformat(formatstr, args, output, limit, overflowok) |
| b_format = formatstr.encode('ascii') |
| else: |
| b_format = formatstr |
| ba_format = bytearray(b_format) |
| b_args = [] |
| if not isinstance(args, tuple): |
| args = (args, ) |
| b_args = tuple(args) |
| if output is None: |
| b_output = ba_output = None |
| else: |
| if isinstance(output, str): |
| b_output = output.encode('ascii') |
| else: |
| b_output = output |
| ba_output = bytearray(b_output) |
| testformat(b_format, b_args, b_output, limit, overflowok) |
| testformat(ba_format, b_args, ba_output, limit, overflowok) |
| |
| 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) |
| |
| def test_exc_common(formatstr, args, exception, excmsg): |
| # test str and bytes |
| test_exc(formatstr, args, exception, excmsg) |
| test_exc(formatstr.encode('ascii'), args, exception, excmsg) |
| |
| class FormatTest(unittest.TestCase): |
| |
| def test_common_format(self): |
| # test the format identifiers that work the same across |
| # str, bytes, and bytearrays (integer, float, oct, hex) |
| testcommon("%%", (), "%") |
| testcommon("%.1d", (1,), "1") |
| testcommon("%.*d", (sys.maxsize,1), overflowok=True) # expect overflow |
| testcommon("%.100d", (1,), '00000000000000000000000000000000000000' |
| '000000000000000000000000000000000000000000000000000000' |
| '00000001', overflowok=True) |
| testcommon("%#.117x", (1,), '0x00000000000000000000000000000000000' |
| '000000000000000000000000000000000000000000000000000000' |
| '0000000000000000000000000001', |
| overflowok=True) |
| testcommon("%#.118x", (1,), '0x00000000000000000000000000000000000' |
| '000000000000000000000000000000000000000000000000000000' |
| '00000000000000000000000000001', |
| overflowok=True) |
| |
| testcommon("%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 |
| testcommon("%#.*g", (109, -1.e+49/3.)) |
| testcommon("%#.*g", (110, -1.e+49/3.)) |
| testcommon("%#.*g", (110, -1.e+100/3.)) |
| # test some ridiculously large precision, expect overflow |
| testcommon('%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. |
| testcommon("%#.*g", (110, -1.e+100/3.)) |
| testcommon("%#.*G", (110, -1.e+100/3.)) |
| testcommon("%#.*f", (110, -1.e+100/3.)) |
| testcommon("%#.*F", (110, -1.e+100/3.)) |
| # Formatting of integers. Overflow is not ok |
| testcommon("%x", 10, "a") |
| testcommon("%x", 100000000000, "174876e800") |
| testcommon("%o", 10, "12") |
| testcommon("%o", 100000000000, "1351035564000") |
| testcommon("%d", 10, "10") |
| testcommon("%d", 100000000000, "100000000000") |
| |
| big = 123456789012345678901234567890 |
| testcommon("%d", big, "123456789012345678901234567890") |
| testcommon("%d", -big, "-123456789012345678901234567890") |
| testcommon("%5d", -big, "-123456789012345678901234567890") |
| testcommon("%31d", -big, "-123456789012345678901234567890") |
| testcommon("%32d", -big, " -123456789012345678901234567890") |
| testcommon("%-32d", -big, "-123456789012345678901234567890 ") |
| testcommon("%032d", -big, "-0123456789012345678901234567890") |
| testcommon("%-032d", -big, "-123456789012345678901234567890 ") |
| testcommon("%034d", -big, "-000123456789012345678901234567890") |
| testcommon("%034d", big, "0000123456789012345678901234567890") |
| testcommon("%0+34d", big, "+000123456789012345678901234567890") |
| testcommon("%+34d", big, " +123456789012345678901234567890") |
| testcommon("%34d", big, " 123456789012345678901234567890") |
| testcommon("%.2d", big, "123456789012345678901234567890") |
| testcommon("%.30d", big, "123456789012345678901234567890") |
| testcommon("%.31d", big, "0123456789012345678901234567890") |
| testcommon("%32.31d", big, " 0123456789012345678901234567890") |
| testcommon("%d", float(big), "123456________________________", 6) |
| |
| big = 0x1234567890abcdef12345 # 21 hex digits |
| testcommon("%x", big, "1234567890abcdef12345") |
| testcommon("%x", -big, "-1234567890abcdef12345") |
| testcommon("%5x", -big, "-1234567890abcdef12345") |
| testcommon("%22x", -big, "-1234567890abcdef12345") |
| testcommon("%23x", -big, " -1234567890abcdef12345") |
| testcommon("%-23x", -big, "-1234567890abcdef12345 ") |
| testcommon("%023x", -big, "-01234567890abcdef12345") |
| testcommon("%-023x", -big, "-1234567890abcdef12345 ") |
| testcommon("%025x", -big, "-0001234567890abcdef12345") |
| testcommon("%025x", big, "00001234567890abcdef12345") |
| testcommon("%0+25x", big, "+0001234567890abcdef12345") |
| testcommon("%+25x", big, " +1234567890abcdef12345") |
| testcommon("%25x", big, " 1234567890abcdef12345") |
| testcommon("%.2x", big, "1234567890abcdef12345") |
| testcommon("%.21x", big, "1234567890abcdef12345") |
| testcommon("%.22x", big, "01234567890abcdef12345") |
| testcommon("%23.22x", big, " 01234567890abcdef12345") |
| testcommon("%-23.22x", big, "01234567890abcdef12345 ") |
| testcommon("%X", big, "1234567890ABCDEF12345") |
| testcommon("%#X", big, "0X1234567890ABCDEF12345") |
| testcommon("%#x", big, "0x1234567890abcdef12345") |
| testcommon("%#x", -big, "-0x1234567890abcdef12345") |
| testcommon("%#27x", big, " 0x1234567890abcdef12345") |
| testcommon("%#-27x", big, "0x1234567890abcdef12345 ") |
| testcommon("%#027x", big, "0x00001234567890abcdef12345") |
| testcommon("%#.23x", big, "0x001234567890abcdef12345") |
| testcommon("%#.23x", -big, "-0x001234567890abcdef12345") |
| testcommon("%#27.23x", big, " 0x001234567890abcdef12345") |
| testcommon("%#-27.23x", big, "0x001234567890abcdef12345 ") |
| testcommon("%#027.23x", big, "0x00001234567890abcdef12345") |
| testcommon("%#+.23x", big, "+0x001234567890abcdef12345") |
| testcommon("%# .23x", big, " 0x001234567890abcdef12345") |
| testcommon("%#+.23X", big, "+0X001234567890ABCDEF12345") |
| # next one gets two leading zeroes from precision, and another from the |
| # 0 flag and the width |
| testcommon("%#+027.23X", big, "+0X0001234567890ABCDEF12345") |
| testcommon("%# 027.23X", big, " 0X0001234567890ABCDEF12345") |
| # same, except no 0 flag |
| testcommon("%#+27.23X", big, " +0X001234567890ABCDEF12345") |
| testcommon("%#-+27.23x", big, "+0x001234567890abcdef12345 ") |
| testcommon("%#- 27.23x", big, " 0x001234567890abcdef12345 ") |
| |
| big = 0o12345670123456701234567012345670 # 32 octal digits |
| testcommon("%o", big, "12345670123456701234567012345670") |
| testcommon("%o", -big, "-12345670123456701234567012345670") |
| testcommon("%5o", -big, "-12345670123456701234567012345670") |
| testcommon("%33o", -big, "-12345670123456701234567012345670") |
| testcommon("%34o", -big, " -12345670123456701234567012345670") |
| testcommon("%-34o", -big, "-12345670123456701234567012345670 ") |
| testcommon("%034o", -big, "-012345670123456701234567012345670") |
| testcommon("%-034o", -big, "-12345670123456701234567012345670 ") |
| testcommon("%036o", -big, "-00012345670123456701234567012345670") |
| testcommon("%036o", big, "000012345670123456701234567012345670") |
| testcommon("%0+36o", big, "+00012345670123456701234567012345670") |
| testcommon("%+36o", big, " +12345670123456701234567012345670") |
| testcommon("%36o", big, " 12345670123456701234567012345670") |
| testcommon("%.2o", big, "12345670123456701234567012345670") |
| testcommon("%.32o", big, "12345670123456701234567012345670") |
| testcommon("%.33o", big, "012345670123456701234567012345670") |
| testcommon("%34.33o", big, " 012345670123456701234567012345670") |
| testcommon("%-34.33o", big, "012345670123456701234567012345670 ") |
| testcommon("%o", big, "12345670123456701234567012345670") |
| testcommon("%#o", big, "0o12345670123456701234567012345670") |
| testcommon("%#o", -big, "-0o12345670123456701234567012345670") |
| testcommon("%#38o", big, " 0o12345670123456701234567012345670") |
| testcommon("%#-38o", big, "0o12345670123456701234567012345670 ") |
| testcommon("%#038o", big, "0o000012345670123456701234567012345670") |
| testcommon("%#.34o", big, "0o0012345670123456701234567012345670") |
| testcommon("%#.34o", -big, "-0o0012345670123456701234567012345670") |
| testcommon("%#38.34o", big, " 0o0012345670123456701234567012345670") |
| testcommon("%#-38.34o", big, "0o0012345670123456701234567012345670 ") |
| testcommon("%#038.34o", big, "0o000012345670123456701234567012345670") |
| testcommon("%#+.34o", big, "+0o0012345670123456701234567012345670") |
| testcommon("%# .34o", big, " 0o0012345670123456701234567012345670") |
| testcommon("%#+38.34o", big, " +0o0012345670123456701234567012345670") |
| testcommon("%#-+38.34o", big, "+0o0012345670123456701234567012345670 ") |
| testcommon("%#- 38.34o", big, " 0o0012345670123456701234567012345670 ") |
| testcommon("%#+038.34o", big, "+0o00012345670123456701234567012345670") |
| testcommon("%# 038.34o", big, " 0o00012345670123456701234567012345670") |
| # next one gets one leading zero from precision |
| testcommon("%.33o", big, "012345670123456701234567012345670") |
| # base marker added in spite of leading zero (different to Python 2) |
| testcommon("%#.33o", big, "0o012345670123456701234567012345670") |
| # reduce precision, and base marker is always added |
| testcommon("%#.32o", big, "0o12345670123456701234567012345670") |
| # one leading zero from precision, plus two from "0" flag & width |
| testcommon("%035.33o", big, "00012345670123456701234567012345670") |
| # base marker shouldn't change the size |
| testcommon("%0#35.33o", big, "0o012345670123456701234567012345670") |
| |
| # Some small ints, in both Python int and flavors. |
| testcommon("%d", 42, "42") |
| testcommon("%d", -42, "-42") |
| testcommon("%d", 42.0, "42") |
| testcommon("%#x", 1, "0x1") |
| testcommon("%#X", 1, "0X1") |
| testcommon("%#o", 1, "0o1") |
| testcommon("%#o", 0, "0o0") |
| testcommon("%o", 0, "0") |
| testcommon("%d", 0, "0") |
| testcommon("%#x", 0, "0x0") |
| testcommon("%#X", 0, "0X0") |
| testcommon("%x", 0x42, "42") |
| testcommon("%x", -0x42, "-42") |
| testcommon("%o", 0o42, "42") |
| testcommon("%o", -0o42, "-42") |
| # alternate float formatting |
| testcommon('%g', 1.1, '1.1') |
| testcommon('%#g', 1.1, '1.10000') |
| |
| if verbose: |
| print('Testing exceptions') |
| test_exc_common('%', (), ValueError, "incomplete format") |
| test_exc_common('% %s', 1, ValueError, |
| "unsupported format character '%' (0x25) at index 2") |
| test_exc_common('%d', '1', TypeError, |
| "%d format: a real number is required, not str") |
| test_exc_common('%d', b'1', TypeError, |
| "%d format: a real number is required, not bytes") |
| test_exc_common('%x', '1', TypeError, |
| "%x format: an integer is required, not str") |
| test_exc_common('%x', 3.14, TypeError, |
| "%x format: an integer is required, not float") |
| |
| def test_str_format(self): |
| testformat("%r", "\u0378", "'\\u0378'") # non printable |
| testformat("%a", "\u0378", "'\\u0378'") # non printable |
| testformat("%r", "\u0374", "'\u0374'") # printable |
| testformat("%a", "\u0374", "'\\u0374'") # printable |
| |
| # Test exception for unknown format characters, etc. |
| if verbose: |
| print('Testing exceptions') |
| 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('%g', '1', TypeError, "must be real number, not str") |
| test_exc('no format', '1', TypeError, |
| "not all arguments converted during string formatting") |
| test_exc('%c', -1, OverflowError, "%c arg not in range(0x110000)") |
| test_exc('%c', sys.maxunicode+1, OverflowError, |
| "%c arg not in range(0x110000)") |
| #test_exc('%c', 2**128, OverflowError, "%c arg not in range(0x110000)") |
| test_exc('%c', 3.14, TypeError, "%c requires int or char") |
| test_exc('%c', 'ab', TypeError, "%c requires int or char") |
| test_exc('%c', b'x', TypeError, "%c requires int or char") |
| |
| 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_bytes_and_bytearray_format(self): |
| # %c will insert a single byte, either from an int in range(256), or |
| # from a bytes argument of length 1, not from a str. |
| testcommon(b"%c", 7, b"\x07") |
| testcommon(b"%c", b"Z", b"Z") |
| testcommon(b"%c", bytearray(b"Z"), b"Z") |
| testcommon(b"%5c", 65, b" A") |
| testcommon(b"%-5c", 65, b"A ") |
| # %b will insert a series of bytes, either from a type that supports |
| # the Py_buffer protocol, or something that has a __bytes__ method |
| class FakeBytes(object): |
| def __bytes__(self): |
| return b'123' |
| fb = FakeBytes() |
| testcommon(b"%b", b"abc", b"abc") |
| testcommon(b"%b", bytearray(b"def"), b"def") |
| testcommon(b"%b", fb, b"123") |
| testcommon(b"%b", memoryview(b"abc"), b"abc") |
| # # %s is an alias for %b -- should only be used for Py2/3 code |
| testcommon(b"%s", b"abc", b"abc") |
| testcommon(b"%s", bytearray(b"def"), b"def") |
| testcommon(b"%s", fb, b"123") |
| testcommon(b"%s", memoryview(b"abc"), b"abc") |
| # %a will give the equivalent of |
| # repr(some_obj).encode('ascii', 'backslashreplace') |
| testcommon(b"%a", 3.14, b"3.14") |
| testcommon(b"%a", b"ghi", b"b'ghi'") |
| testcommon(b"%a", "jkl", b"'jkl'") |
| testcommon(b"%a", "\u0544", b"'\\u0544'") |
| # %r is an alias for %a |
| testcommon(b"%r", 3.14, b"3.14") |
| testcommon(b"%r", b"ghi", b"b'ghi'") |
| testcommon(b"%r", "jkl", b"'jkl'") |
| testcommon(b"%r", "\u0544", b"'\\u0544'") |
| |
| # Test exception for unknown format characters, etc. |
| if verbose: |
| print('Testing exceptions') |
| test_exc(b'%g', '1', TypeError, "float argument required, not str") |
| test_exc(b'%g', b'1', TypeError, "float argument required, not bytes") |
| test_exc(b'no format', 7, TypeError, |
| "not all arguments converted during bytes formatting") |
| test_exc(b'no format', b'1', TypeError, |
| "not all arguments converted during bytes formatting") |
| test_exc(b'no format', bytearray(b'1'), TypeError, |
| "not all arguments converted during bytes formatting") |
| test_exc(b"%c", -1, OverflowError, |
| "%c arg not in range(256)") |
| test_exc(b"%c", 256, OverflowError, |
| "%c arg not in range(256)") |
| test_exc(b"%c", 2**128, OverflowError, |
| "%c arg not in range(256)") |
| test_exc(b"%c", b"Za", TypeError, |
| "%c requires an integer in range(256) or a single byte") |
| test_exc(b"%c", "Y", TypeError, |
| "%c requires an integer in range(256) or a single byte") |
| test_exc(b"%c", 3.14, TypeError, |
| "%c requires an integer in range(256) or a single byte") |
| 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'] |
| grouping = localeconv['grouping'] |
| |
| text = format(123456789, "n") |
| if grouping: |
| self.assertIn(sep, text) |
| self.assertEqual(text.replace(sep, ''), '123456789') |
| |
| text = format(1234.5, "n") |
| if grouping: |
| 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) |
| |
| def test_better_error_message_format(self): |
| # https://bugs.python.org/issue20524 |
| for value in [12j, 12, 12.0, "12"]: |
| with self.subTest(value=value): |
| # The format spec must be invalid for all types we're testing. |
| # '%M' will suffice. |
| bad_format_spec = '%M' |
| err = re.escape("Invalid format specifier " |
| f"'{bad_format_spec}' for object of type " |
| f"'{type(value).__name__}'") |
| with self.assertRaisesRegex(ValueError, err): |
| f"xx{{value:{bad_format_spec}}}yy".format(value=value) |
| |
| # Also test the builtin format() function. |
| with self.assertRaisesRegex(ValueError, err): |
| format(value, bad_format_spec) |
| |
| # Also test f-strings. |
| with self.assertRaisesRegex(ValueError, err): |
| eval("f'xx{value:{bad_format_spec}}yy'") |
| |
| def test_unicode_in_error_message(self): |
| str_err = re.escape( |
| "Invalid format specifier '%ЫйЯЧ' for object of type 'str'") |
| with self.assertRaisesRegex(ValueError, str_err): |
| "{a:%ЫйЯЧ}".format(a='a') |
| |
| def test_negative_zero(self): |
| ## default behavior |
| self.assertEqual(f"{-0.:.1f}", "-0.0") |
| self.assertEqual(f"{-.01:.1f}", "-0.0") |
| self.assertEqual(f"{-0:.1f}", "0.0") # integers do not distinguish -0 |
| |
| ## z sign option |
| self.assertEqual(f"{0.:z.1f}", "0.0") |
| self.assertEqual(f"{0.:z6.1f}", " 0.0") |
| self.assertEqual(f"{-1.:z6.1f}", " -1.0") |
| self.assertEqual(f"{-0.:z.1f}", "0.0") |
| self.assertEqual(f"{.01:z.1f}", "0.0") |
| self.assertEqual(f"{-0:z.1f}", "0.0") # z is allowed for integer input |
| self.assertEqual(f"{-.01:z.1f}", "0.0") |
| self.assertEqual(f"{0.:z.2f}", "0.00") |
| self.assertEqual(f"{-0.:z.2f}", "0.00") |
| self.assertEqual(f"{.001:z.2f}", "0.00") |
| self.assertEqual(f"{-.001:z.2f}", "0.00") |
| |
| self.assertEqual(f"{0.:z.1e}", "0.0e+00") |
| self.assertEqual(f"{-0.:z.1e}", "0.0e+00") |
| self.assertEqual(f"{0.:z.1E}", "0.0E+00") |
| self.assertEqual(f"{-0.:z.1E}", "0.0E+00") |
| |
| self.assertEqual(f"{-0.001:z.2e}", "-1.00e-03") # tests for mishandled |
| # rounding |
| self.assertEqual(f"{-0.001:z.2g}", "-0.001") |
| self.assertEqual(f"{-0.001:z.2%}", "-0.10%") |
| |
| self.assertEqual(f"{-00000.000001:z.1f}", "0.0") |
| self.assertEqual(f"{-00000.:z.1f}", "0.0") |
| self.assertEqual(f"{-.0000000000:z.1f}", "0.0") |
| |
| self.assertEqual(f"{-00000.000001:z.2f}", "0.00") |
| self.assertEqual(f"{-00000.:z.2f}", "0.00") |
| self.assertEqual(f"{-.0000000000:z.2f}", "0.00") |
| |
| self.assertEqual(f"{.09:z.1f}", "0.1") |
| self.assertEqual(f"{-.09:z.1f}", "-0.1") |
| |
| self.assertEqual(f"{-0.: z.0f}", " 0") |
| self.assertEqual(f"{-0.:+z.0f}", "+0") |
| self.assertEqual(f"{-0.:-z.0f}", "0") |
| self.assertEqual(f"{-1.: z.0f}", "-1") |
| self.assertEqual(f"{-1.:+z.0f}", "-1") |
| self.assertEqual(f"{-1.:-z.0f}", "-1") |
| |
| self.assertEqual(f"{0.j:z.1f}", "0.0+0.0j") |
| self.assertEqual(f"{-0.j:z.1f}", "0.0+0.0j") |
| self.assertEqual(f"{.01j:z.1f}", "0.0+0.0j") |
| self.assertEqual(f"{-.01j:z.1f}", "0.0+0.0j") |
| |
| self.assertEqual(f"{-0.:z>6.1f}", "zz-0.0") # test fill, esp. 'z' fill |
| self.assertEqual(f"{-0.:z>z6.1f}", "zzz0.0") |
| self.assertEqual(f"{-0.:x>z6.1f}", "xxx0.0") |
| self.assertEqual(f"{-0.:🖤>z6.1f}", "🖤🖤🖤0.0") # multi-byte fill char |
| |
| def test_specifier_z_error(self): |
| error_msg = re.compile("Invalid format specifier '.*z.*'") |
| with self.assertRaisesRegex(ValueError, error_msg): |
| f"{0:z+f}" # wrong position |
| with self.assertRaisesRegex(ValueError, error_msg): |
| f"{0:fz}" # wrong position |
| |
| error_msg = re.escape("Negative zero coercion (z) not allowed") |
| with self.assertRaisesRegex(ValueError, error_msg): |
| f"{0:zd}" # can't apply to int presentation type |
| with self.assertRaisesRegex(ValueError, error_msg): |
| f"{'x':zs}" # can't apply to string |
| |
| error_msg = re.escape("unsupported format character 'z'") |
| with self.assertRaisesRegex(ValueError, error_msg): |
| "%z.1f" % 0 # not allowed in old style string interpolation |
| with self.assertRaisesRegex(ValueError, error_msg): |
| b"%z.1f" % 0 |
| |
| |
| if __name__ == "__main__": |
| unittest.main() |
