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
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
|
# frozen_string_literal: false
require 'test/unit'
require 'stringio'
require_relative '../ruby/ut_eof'
class TestStringIO < Test::Unit::TestCase
include TestEOF
def open_file(content)
f = StringIO.new(content)
yield f
end
alias open_file_rw open_file
include TestEOF::Seek
def test_initialize
assert_kind_of StringIO, StringIO.new
assert_kind_of StringIO, StringIO.new('str')
assert_kind_of StringIO, StringIO.new('str', 'r+')
assert_raise(ArgumentError) { StringIO.new('', 'x') }
assert_raise(ArgumentError) { StringIO.new('', 'rx') }
assert_raise(ArgumentError) { StringIO.new('', 'rbt') }
assert_raise(TypeError) { StringIO.new(nil) }
assert_raise(TypeError) { StringIO.new('str', nil) }
o = Object.new
def o.to_str
nil
end
assert_raise(TypeError) { StringIO.new(o) }
def o.to_str
'str'
end
assert_kind_of StringIO, StringIO.new(o)
end
def test_truncate
io = StringIO.new("")
io.puts "abc"
io.truncate(0)
io.puts "def"
assert_equal("\0\0\0\0def\n", io.string, "[ruby-dev:24190]")
assert_raise(Errno::EINVAL) { io.truncate(-1) }
io.truncate(10)
assert_equal("\0\0\0\0def\n\0\0", io.string)
end
def test_seek_beyond_eof
io = StringIO.new
n = 100
io.seek(n)
io.print "last"
assert_equal("\0" * n + "last", io.string, "[ruby-dev:24194]")
end
def test_overwrite
stringio = StringIO.new
responses = ['', 'just another ruby', 'hacker']
responses.each do |resp|
stringio.puts(resp)
stringio.rewind
end
assert_equal("hacker\nother ruby\n", stringio.string, "[ruby-core:3836]")
end
def test_gets
assert_equal(nil, StringIO.new("").gets)
assert_equal("\n", StringIO.new("\n").gets)
assert_equal("a\n", StringIO.new("a\n").gets)
assert_equal("a\n", StringIO.new("a\nb\n").gets)
assert_equal("a", StringIO.new("a").gets)
assert_equal("a\n", StringIO.new("a\nb").gets)
assert_equal("abc\n", StringIO.new("abc\n\ndef\n").gets)
assert_equal("abc\n\ndef\n", StringIO.new("abc\n\ndef\n").gets(nil))
assert_equal("abc\n\n", StringIO.new("abc\n\ndef\n").gets(""))
assert_raise(TypeError){StringIO.new("").gets(1, 1)}
assert_nothing_raised {StringIO.new("").gets(nil, nil)}
end
def test_readlines
assert_equal([], StringIO.new("").readlines)
assert_equal(["\n"], StringIO.new("\n").readlines)
assert_equal(["a\n"], StringIO.new("a\n").readlines)
assert_equal(["a\n", "b\n"], StringIO.new("a\nb\n").readlines)
assert_equal(["a"], StringIO.new("a").readlines)
assert_equal(["a\n", "b"], StringIO.new("a\nb").readlines)
assert_equal(["abc\n", "\n", "def\n"], StringIO.new("abc\n\ndef\n").readlines)
assert_equal(["abc\n\ndef\n"], StringIO.new("abc\n\ndef\n").readlines(nil), "[ruby-dev:34591]")
assert_equal(["abc\n\n", "def\n"], StringIO.new("abc\n\ndef\n").readlines(""))
end
def test_write
s = ""
f = StringIO.new(s, "w")
f.print("foo")
f.close
assert_equal("foo", s)
f = StringIO.new(s, File::WRONLY)
f.print("bar")
f.close
assert_equal("bar", s)
f = StringIO.new(s, "a")
o = Object.new
def o.to_s; "baz"; end
f.print(o)
f.close
assert_equal("barbaz", s)
ensure
f.close unless f.closed?
end
def test_write_nonblock_no_exceptions
s = ""
f = StringIO.new(s, "w")
f.write_nonblock("foo", exception: false)
f.close
assert_equal("foo", s)
end
def test_write_nonblock
s = ""
f = StringIO.new(s, "w")
f.write_nonblock("foo")
f.close
assert_equal("foo", s)
f = StringIO.new(s, File::WRONLY)
f.write_nonblock("bar")
f.close
assert_equal("bar", s)
f = StringIO.new(s, "a")
o = Object.new
def o.to_s; "baz"; end
f.write_nonblock(o)
f.close
assert_equal("barbaz", s)
ensure
f.close unless f.closed?
end
def test_write_infection
bug9769 = '[ruby-dev:48118] [Bug #9769]'
s = "".untaint
f = StringIO.new(s, "w")
f.print("bar".taint)
f.close
assert_predicate(s, :tainted?, bug9769)
ensure
f.close unless f.closed?
end
def test_write_encoding
s = "".force_encoding(Encoding::UTF_8)
f = StringIO.new(s)
f.print("\u{3053 3093 306b 3061 306f ff01}".b)
assert_equal(Encoding::UTF_8, s.encoding, "honor the original encoding over ASCII-8BIT")
end
def test_set_encoding
bug10285 = '[ruby-core:65240] [Bug #10285]'
f = StringIO.new()
f.set_encoding(Encoding::ASCII_8BIT)
f.write("quz \x83 mat".b)
s = "foo \x97 bar".force_encoding(Encoding::WINDOWS_1252)
assert_nothing_raised(Encoding::CompatibilityError, bug10285) {
f.write(s)
}
assert_equal(Encoding::ASCII_8BIT, f.string.encoding, bug10285)
bug11827 = '[ruby-core:72189] [Bug #11827]'
f = StringIO.new("foo\x83".freeze)
assert_nothing_raised(RuntimeError, bug11827) {
f.set_encoding(Encoding::ASCII_8BIT)
}
assert_equal("foo\x83".b, f.gets)
end
def test_mode_error
f = StringIO.new("", "r")
assert_raise(IOError) { f.write("foo") }
f = StringIO.new("", "w")
assert_raise(IOError) { f.read }
assert_raise(Errno::EACCES) { StringIO.new("".freeze, "w") }
s = ""
f = StringIO.new(s, "w")
s.freeze
assert_raise(IOError) { f.write("foo") }
assert_raise(IOError) { StringIO.allocate.read }
ensure
f.close unless f.closed?
end
def test_open
s = ""
StringIO.open("foo") {|f| s = f.read }
assert_equal("foo", s)
end
def test_isatty
assert_equal(false, StringIO.new("").isatty)
end
def test_fsync
assert_equal(0, StringIO.new("").fsync)
end
def test_sync
assert_equal(true, StringIO.new("").sync)
assert_equal(false, StringIO.new("").sync = false)
end
def test_set_fcntl
assert_raise(NotImplementedError) { StringIO.new("").fcntl }
end
def test_close
f = StringIO.new("")
f.close
assert_nil(f.close)
f = StringIO.new("")
f.close_read
f.close_write
assert_nil(f.close)
ensure
f.close unless f.closed?
end
def test_close_read
f = StringIO.new("")
f.close_read
assert_raise(IOError) { f.read }
assert_nothing_raised(IOError) {f.close_read}
f.close
f = StringIO.new("", "w")
assert_raise(IOError) { f.close_read }
f.close
ensure
f.close unless f.closed?
end
def test_close_write
f = StringIO.new("")
f.close_write
assert_raise(IOError) { f.write("foo") }
assert_nothing_raised(IOError) {f.close_write}
f.close
f = StringIO.new("", "r")
assert_raise(IOError) { f.close_write }
f.close
ensure
f.close unless f.closed?
end
def test_closed
f = StringIO.new("")
assert_equal(false, f.closed?)
f.close
assert_equal(true, f.closed?)
ensure
f.close unless f.closed?
end
def test_closed_read
f = StringIO.new("")
assert_equal(false, f.closed_read?)
f.close_write
assert_equal(false, f.closed_read?)
f.close_read
assert_equal(true, f.closed_read?)
ensure
f.close unless f.closed?
end
def test_closed_write
f = StringIO.new("")
assert_equal(false, f.closed_write?)
f.close_read
assert_equal(false, f.closed_write?)
f.close_write
assert_equal(true, f.closed_write?)
ensure
f.close unless f.closed?
end
def test_dup
f1 = StringIO.new("1234")
assert_equal("1", f1.getc)
f2 = f1.dup
assert_equal("2", f2.getc)
assert_equal("3", f1.getc)
assert_equal("4", f2.getc)
assert_equal(nil, f1.getc)
assert_equal(true, f2.eof?)
f1.close
assert_equal(false, f2.closed?, '[ruby-core:48443]')
ensure
f1.close unless f1.closed?
f2.close unless f2.closed?
end
def test_lineno
f = StringIO.new("foo\nbar\nbaz\n")
assert_equal([0, "foo\n"], [f.lineno, f.gets])
assert_equal([1, "bar\n"], [f.lineno, f.gets])
f.lineno = 1000
assert_equal([1000, "baz\n"], [f.lineno, f.gets])
assert_equal([1001, nil], [f.lineno, f.gets])
ensure
f.close unless f.closed?
end
def test_pos
f = StringIO.new("foo\nbar\nbaz\n")
assert_equal([0, "foo\n"], [f.pos, f.gets])
assert_equal([4, "bar\n"], [f.pos, f.gets])
assert_raise(Errno::EINVAL) { f.pos = -1 }
f.pos = 1
assert_equal([1, "oo\n"], [f.pos, f.gets])
assert_equal([4, "bar\n"], [f.pos, f.gets])
assert_equal([8, "baz\n"], [f.pos, f.gets])
assert_equal([12, nil], [f.pos, f.gets])
ensure
f.close unless f.closed?
end
def test_reopen
f = StringIO.new("foo\nbar\nbaz\n")
assert_equal("foo\n", f.gets)
f.reopen("qux\nquux\nquuux\n")
assert_equal("qux\n", f.gets)
f2 = StringIO.new("")
f2.reopen(f)
assert_equal("quux\n", f2.gets)
ensure
f.close unless f.closed?
end
def test_seek
f = StringIO.new("1234")
assert_raise(Errno::EINVAL) { f.seek(-1) }
f.seek(-1, 2)
assert_equal("4", f.getc)
assert_raise(Errno::EINVAL) { f.seek(1, 3) }
f.close
assert_raise(IOError) { f.seek(0) }
ensure
f.close unless f.closed?
end
def test_each_byte
f = StringIO.new("1234")
a = []
f.each_byte {|c| a << c }
assert_equal(%w(1 2 3 4).map {|c| c.ord }, a)
ensure
f.close unless f.closed?
end
def test_getbyte
f = StringIO.new("1234")
assert_equal("1".ord, f.getbyte)
assert_equal("2".ord, f.getbyte)
assert_equal("3".ord, f.getbyte)
assert_equal("4".ord, f.getbyte)
assert_equal(nil, f.getbyte)
ensure
f.close unless f.closed?
end
def test_ungetbyte
s = "foo\nbar\n"
t = StringIO.new(s, "r")
t.ungetbyte(0x41)
assert_equal(0x41, t.getbyte)
t.ungetbyte("qux")
assert_equal("quxfoo\n", t.gets)
t.set_encoding("utf-8")
t.ungetbyte(0x89)
t.ungetbyte(0x8e)
t.ungetbyte("\xe7")
t.ungetbyte("\xe7\xb4\x85")
assert_equal("\u7d05\u7389bar\n", t.gets)
assert_equal("q\u7d05\u7389bar\n", s)
t.pos = 1
t.ungetbyte("\u{30eb 30d3 30fc}")
assert_equal(0, t.pos)
assert_equal("\u{30eb 30d3 30fc}\u7d05\u7389bar\n", s)
end
def test_ungetc
s = "1234"
f = StringIO.new(s, "r")
assert_nothing_raised { f.ungetc("x") }
assert_equal("x", f.getc) # bug? -> it's a feature from 1.9.
assert_equal("1", f.getc)
s = "1234"
f = StringIO.new(s, "r")
assert_equal("1", f.getc)
f.ungetc("y".ord)
assert_equal("y", f.getc)
assert_equal("2", f.getc)
ensure
f.close unless f.closed?
end
def test_readchar
f = StringIO.new("1234")
a = ""
assert_raise(EOFError) { loop { a << f.readchar } }
assert_equal("1234", a)
end
def test_readbyte
f = StringIO.new("1234")
a = []
assert_raise(EOFError) { loop { a << f.readbyte } }
assert_equal("1234".unpack("C*"), a)
end
def test_each_char
f = StringIO.new("1234")
assert_equal(%w(1 2 3 4), f.each_char.to_a)
end
def test_each_codepoint
f = StringIO.new("1234")
assert_equal([49, 50, 51, 52], f.each_codepoint.to_a)
end
def test_gets2
f = StringIO.new("foo\nbar\nbaz\n")
assert_equal("fo", f.gets(2))
o = Object.new
def o.to_str; "z"; end
assert_equal("o\nbar\nbaz", f.gets(o))
f = StringIO.new("foo\nbar\nbaz\n")
assert_equal("foo\nbar\nbaz", f.gets("az"))
f = StringIO.new("a" * 10000 + "zz!")
assert_equal("a" * 10000 + "zz", f.gets("zz"))
f = StringIO.new("a" * 10000 + "zz!")
assert_equal("a" * 10000 + "zz!", f.gets("zzz"))
bug4112 = '[ruby-dev:42674]'
["a".encode("utf-16be"), "\u3042"].each do |s|
assert_equal(s, StringIO.new(s).gets(1), bug4112)
assert_equal(s, StringIO.new(s).gets(nil, 1), bug4112)
end
end
def test_each
f = StringIO.new("foo\nbar\nbaz\n")
assert_equal(["foo\n", "bar\n", "baz\n"], f.each.to_a)
end
def test_putc
s = ""
f = StringIO.new(s, "w")
f.putc("1")
f.putc("2")
f.putc("3")
f.close
assert_equal("123", s)
s = "foo"
f = StringIO.new(s, "a")
f.putc("1")
f.putc("2")
f.putc("3")
f.close
assert_equal("foo123", s)
end
def test_putc_nonascii
s = ""
f = StringIO.new(s, "w")
f.putc("\u{3042}")
f.putc(0x3044)
f.close
assert_equal("\u{3042}D", s)
s = "foo"
f = StringIO.new(s, "a")
f.putc("\u{3042}")
f.putc(0x3044)
f.close
assert_equal("foo\u{3042}D", s)
end
def test_read
f = StringIO.new("\u3042\u3044")
assert_raise(ArgumentError) { f.read(-1) }
assert_raise(ArgumentError) { f.read(1, 2, 3) }
assert_equal("\u3042\u3044", f.read)
assert_nil(f.read(1))
f.rewind
assert_equal("\u3042\u3044".force_encoding(Encoding::ASCII_8BIT), f.read(f.size))
bug5207 = '[ruby-core:39026]'
f.rewind
assert_equal("\u3042\u3044", f.read(nil, nil), bug5207)
f.rewind
s = ""
f.read(nil, s)
assert_equal("\u3042\u3044", s, bug5207)
f.rewind
# not empty buffer
s = "0123456789"
f.read(nil, s)
assert_equal("\u3042\u3044", s)
end
def test_readpartial
f = StringIO.new("\u3042\u3044")
assert_raise(ArgumentError) { f.readpartial(-1) }
assert_raise(ArgumentError) { f.readpartial(1, 2, 3) }
assert_equal("\u3042\u3044".force_encoding(Encoding::ASCII_8BIT), f.readpartial(100))
f.rewind
assert_equal("\u3042\u3044".force_encoding(Encoding::ASCII_8BIT), f.readpartial(f.size))
f.rewind
# not empty buffer
s = '0123456789'
assert_equal("\u3042\u3044".force_encoding(Encoding::ASCII_8BIT), f.readpartial(f.size, s))
end
def test_read_nonblock
f = StringIO.new("\u3042\u3044")
assert_raise(ArgumentError) { f.read_nonblock(-1) }
assert_raise(ArgumentError) { f.read_nonblock(1, 2, 3) }
assert_equal("\u3042\u3044".force_encoding("BINARY"), f.read_nonblock(100))
assert_raise(EOFError) { f.read_nonblock(10) }
f.rewind
assert_equal("\u3042\u3044".force_encoding(Encoding::ASCII_8BIT), f.read_nonblock(f.size))
end
def test_read_nonblock_no_exceptions
f = StringIO.new("\u3042\u3044")
assert_raise(ArgumentError) { f.read_nonblock(-1, exception: false) }
assert_raise(ArgumentError) { f.read_nonblock(1, 2, 3, exception: false) }
assert_raise(ArgumentError) { f.read_nonblock }
assert_equal("\u3042\u3044".force_encoding(Encoding::ASCII_8BIT), f.read_nonblock(100, exception: false))
assert_equal(nil, f.read_nonblock(10, exception: false))
f.rewind
assert_equal("\u3042\u3044".force_encoding(Encoding::ASCII_8BIT), f.read_nonblock(f.size))
f.rewind
# not empty buffer
s = '0123456789'
assert_equal("\u3042\u3044".force_encoding(Encoding::ASCII_8BIT), f.read_nonblock(f.size, s))
end
def test_sysread
f = StringIO.new("sysread \u{30c6 30b9 30c8}")
assert_equal "sysread \u{30c6 30b9 30c8}", f.sysread
assert_equal "", f.sysread
assert_raise(EOFError) { f.sysread(1) }
f.rewind
assert_equal Encoding::ASCII_8BIT, f.sysread(3).encoding
end
def test_size
f = StringIO.new("1234")
assert_equal(4, f.size)
end
# This test is should in ruby/test_method.rb
# However this test depends on stringio library,
# we write it here.
class C < StringIO
alias old_init initialize
attr_reader :foo
def initialize
@foo = :ok
old_init
end
end
def test_method
assert_equal(:ok, C.new.foo, 'Bug #632 [ruby-core:19282]')
end
def test_ungetc_pos
b = '\\b00010001 \\B00010001 \\b1 \\B1 \\b000100011'
s = StringIO.new( b )
expected_pos = 0
while n = s.getc
assert_equal( expected_pos + 1, s.pos )
s.ungetc( n )
assert_equal( expected_pos, s.pos )
assert_equal( n, s.getc )
expected_pos += 1
end
end
def test_ungetc_padding
s = StringIO.new()
s.pos = 2
s.ungetc("a")
assert_equal("\0""a", s.string)
s.pos = 0
s.ungetc("b")
assert_equal("b""\0""a", s.string)
end
def test_ungetbyte_pos
b = '\\b00010001 \\B00010001 \\b1 \\B1 \\b000100011'
s = StringIO.new( b )
expected_pos = 0
while n = s.getbyte
assert_equal( expected_pos + 1, s.pos )
s.ungetbyte( n )
assert_equal( expected_pos, s.pos )
assert_equal( n, s.getbyte )
expected_pos += 1
end
end
def test_ungetbyte_padding
s = StringIO.new()
s.pos = 2
s.ungetbyte("a".ord)
assert_equal("\0""a", s.string)
s.pos = 0
s.ungetbyte("b".ord)
assert_equal("b""\0""a", s.string)
end
def test_frozen
s = StringIO.new
s.freeze
bug = '[ruby-core:33648]'
assert_raise(RuntimeError, bug) {s.puts("foo")}
assert_raise(RuntimeError, bug) {s.string = "foo"}
assert_raise(RuntimeError, bug) {s.reopen("")}
end
def test_frozen_string
s = StringIO.new("".freeze)
bug = '[ruby-core:48530]'
assert_raise(IOError, bug) {s.write("foo")}
assert_raise(IOError, bug) {s.ungetc("a")}
assert_raise(IOError, bug) {s.ungetbyte("a")}
end
def test_readlines_limit_0
assert_raise(ArgumentError, "[ruby-dev:43392]") { StringIO.new.readlines(0) }
end
def test_each_line_limit_0
assert_raise(ArgumentError, "[ruby-dev:43392]") { StringIO.new.each_line(0){} }
assert_raise(ArgumentError, "[ruby-dev:43392]") { StringIO.new.each_line("a",0){} }
end
def test_binmode
s = StringIO.new
s.set_encoding('utf-8')
assert_same s, s.binmode
bug_11945 = '[ruby-core:72699] [Bug #11945]'
assert_equal Encoding::ASCII_8BIT, s.external_encoding, bug_11945
end
def test_new_block_warning
assert_warn(/does not take block/) do
StringIO.new {}
end
end
def test_overflow
limit = (1 << (RbConfig::SIZEOF["size_t"]*8-1)) - 0x10
assert_separately(%w[-rstringio], "#{<<-"begin;"}\n#{<<-"end;"}")
begin;
limit = #{limit}
ary = []
while true
x = "a"*0x100000
break if [x].pack("p").unpack("i!")[0] < 0
ary << x
skip if ary.size > 1000
end
s = StringIO.new(x)
s.gets("xxx", limit)
assert_equal(0x100000, s.pos)
end;
end
end
|