1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
|
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("%r %% %r =? %r ..." %\
(formatstr, args, output), end=' ')
else:
print("%r %% %r works? ..." % (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)
if __name__ == "__main__":
unittest.main()
|
