summaryrefslogtreecommitdiff
path: root/test/ruby/test_dir.rb
blob: bb268f2ab339f1828849ff5d119cb2d520723fda (plain)
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
# frozen_string_literal: false
require 'test/unit'

require 'tmpdir'
require 'fileutils'

class TestDir < Test::Unit::TestCase

  def setup
    @verbose = $VERBOSE
    @root = File.realpath(Dir.mktmpdir('__test_dir__'))
    @nodir = File.join(@root, "dummy")
    @dirs = []
    for i in "a".."z"
      if i.ord % 2 == 0
        FileUtils.touch(File.join(@root, i))
      else
        FileUtils.mkdir(File.join(@root, i))
        @dirs << File.join(i, "")
      end
    end
  end

  def teardown
    $VERBOSE = @verbose
    FileUtils.remove_entry_secure @root if File.directory?(@root)
  end

  def test_seek
    dir = Dir.open(@root)
    begin
      cache = []
      loop do
        pos = dir.tell
        break unless name = dir.read
        cache << [pos, name]
      end
      for x,y in cache.sort_by {|z| z[0] % 3 } # shuffle
        dir.seek(x)
        assert_equal(y, dir.read)
      end
    ensure
      dir.close
    end
  end

  def test_nodir
    assert_raise(Errno::ENOENT) { Dir.open(@nodir) }
  end

  def test_inspect
    d = Dir.open(@root)
    assert_match(/^#<Dir:#{ Regexp.quote(@root) }>$/, d.inspect)
    assert_match(/^#<Dir:.*>$/, Dir.allocate.inspect)
  ensure
    d.close
  end

  def test_path
    d = Dir.open(@root)
    assert_equal(@root, d.path)
    assert_nil(Dir.allocate.path)
  ensure
    d.close
  end

  def test_set_pos
    d = Dir.open(@root)
    loop do
      i = d.pos
      break unless x = d.read
      d.pos = i
      assert_equal(x, d.read)
    end
  ensure
    d.close
  end

  def test_rewind
    d = Dir.open(@root)
    a = (0..5).map { d.read }
    d.rewind
    b = (0..5).map { d.read }
    assert_equal(a, b)
  ensure
    d.close
  end

  def test_chdir
    pwd = Dir.pwd
    env_home = ENV["HOME"]
    env_logdir = ENV["LOGDIR"]
    ENV.delete("HOME")
    ENV.delete("LOGDIR")

    assert_raise(Errno::ENOENT) { Dir.chdir(@nodir) }
    assert_raise(ArgumentError) { Dir.chdir }
    ENV["HOME"] = pwd
    Dir.chdir do
      assert_warning(/conflicting chdir during another chdir block/) { Dir.chdir(pwd) }

      assert_warning(/conflicting chdir during another chdir block/) { Dir.chdir(@root) }
      assert_equal(@root, Dir.pwd)

      assert_warning(/conflicting chdir during another chdir block/) { Dir.chdir(pwd) }

      assert_raise(RuntimeError) { Thread.new { Thread.current.report_on_exception = false; Dir.chdir(@root) }.join }
      assert_raise(RuntimeError) { Thread.new { Thread.current.report_on_exception = false; Dir.chdir(@root) { } }.join }

      assert_warning(/conflicting chdir during another chdir block/) { Dir.chdir(pwd) }

      assert_warning(/conflicting chdir during another chdir block/) { Dir.chdir(@root) }
      assert_equal(@root, Dir.pwd)

      assert_warning(/conflicting chdir during another chdir block/) { Dir.chdir(pwd) }
      Dir.chdir(@root) do
        assert_equal(@root, Dir.pwd)
      end
      assert_equal(pwd, Dir.pwd)
    end

  ensure
    begin
      Dir.chdir(pwd)
    rescue
      abort("cannot return the original directory: #{ pwd }")
    end
    ENV["HOME"] = env_home
    ENV["LOGDIR"] = env_logdir
  end

  def test_chdir_conflict
    pwd = Dir.pwd
    q = Queue.new
    t = Thread.new do
      q.pop
      Dir.chdir(pwd) rescue $!
    end
    Dir.chdir(pwd) do
      q.push nil
      assert_instance_of(RuntimeError, t.value)
    end

    t = Thread.new do
      q.pop
      Dir.chdir(pwd){} rescue $!
    end
    Dir.chdir(pwd) do
      q.push nil
      assert_instance_of(RuntimeError, t.value)
    end
  end

  def test_chroot_nodir
    skip if RUBY_PLATFORM =~ /android/
    assert_raise(NotImplementedError, Errno::ENOENT, Errno::EPERM
		) { Dir.chroot(File.join(@nodir, "")) }
  end

  def test_close
    d = Dir.open(@root)
    d.close
    assert_nothing_raised(IOError) { d.close }
    assert_raise(IOError) { d.read }
  end

  def test_glob
    assert_equal((%w(.) + ("a".."z").to_a).map{|f| File.join(@root, f) },
                 Dir.glob(File.join(@root, "*"), File::FNM_DOTMATCH))
    assert_equal([@root] + ("a".."z").map {|f| File.join(@root, f) },
                 Dir.glob([@root, File.join(@root, "*")]))
    assert_equal([@root] + ("a".."z").map {|f| File.join(@root, f) },
                 Dir.glob([@root, File.join(@root, "*")], sort: false).sort)
    assert_raise_with_message(ArgumentError, /nul-separated/) do
      Dir.glob(@root + "\0\0\0" + File.join(@root, "*"))
    end

    assert_equal(("a".."z").step(2).map {|f| File.join(File.join(@root, f), "") },
                 Dir.glob(File.join(@root, "*/")))
    assert_equal([File.join(@root, '//a')], Dir.glob(@root + '//a'))

    FileUtils.touch(File.join(@root, "{}"))
    assert_equal(%w({} a).map{|f| File.join(@root, f) },
                 Dir.glob(File.join(@root, '{\{\},a}')))
    assert_equal([], Dir.glob(File.join(@root, '[')))
    assert_equal([], Dir.glob(File.join(@root, '[a-\\')))

    assert_equal([File.join(@root, "a")], Dir.glob(File.join(@root, 'a\\')))
    assert_equal(("a".."f").map {|f| File.join(@root, f) }, Dir.glob(File.join(@root, '[abc/def]')))

    open(File.join(@root, "}}{}"), "wb") {}
    open(File.join(@root, "}}a"), "wb") {}
    assert_equal(%w(}}{} }}a).map {|f| File.join(@root, f)}, Dir.glob(File.join(@root, '}}{\{\},a}')))
    assert_equal(%w(}}{} }}a b c).map {|f| File.join(@root, f)}, Dir.glob(File.join(@root, '{\}\}{\{\},a},b,c}')))
    assert_raise(ArgumentError) {
      Dir.glob([[@root, File.join(@root, "*")].join("\0")])
    }
  end

  def test_glob_recursive
    bug6977 = '[ruby-core:47418]'
    bug8006 = '[ruby-core:53108] [Bug #8006]'
    Dir.chdir(@root) do
      assert_include(Dir.glob("a/**/*", File::FNM_DOTMATCH), "a/.", bug8006)

      Dir.mkdir("a/b")
      assert_not_include(Dir.glob("a/**/*", File::FNM_DOTMATCH), "a/b/.")

      FileUtils.mkdir_p("a/b/c/d/e/f")
      assert_equal(["a/b/c/d/e/f"], Dir.glob("a/**/e/f"), bug6977)
      assert_equal(["a/b/c/d/e/f"], Dir.glob("a/**/d/e/f"), bug6977)
      assert_equal(["a/b/c/d/e/f"], Dir.glob("a/**/c/d/e/f"), bug6977)
      assert_equal(["a/b/c/d/e/f"], Dir.glob("a/**/b/c/d/e/f"), bug6977)
      assert_equal(["a/b/c/d/e/f"], Dir.glob("a/**/c/?/e/f"), bug6977)
      assert_equal(["a/b/c/d/e/f"], Dir.glob("a/**/c/**/d/e/f"), bug6977)
      assert_equal(["a/b/c/d/e/f"], Dir.glob("a/**/c/**/d/e/f"), bug6977)

      bug8283 = '[ruby-core:54387] [Bug #8283]'
      dirs = ["a/.x", "a/b/.y"]
      FileUtils.mkdir_p(dirs)
      dirs.map {|dir| open("#{dir}/z", "w") {}}
      assert_equal([], Dir.glob("a/**/z"), bug8283)
      assert_equal(["a/.x/z"], Dir.glob("a/**/.x/z"), bug8283)
      assert_equal(["a/.x/z"], Dir.glob("a/.x/**/z"), bug8283)
      assert_equal(["a/b/.y/z"], Dir.glob("a/**/.y/z"), bug8283)
    end
  end

  def test_glob_recursive_directory
    Dir.chdir(@root) do
      ['d', 'e'].each do |path|
        FileUtils.mkdir_p("c/#{path}/a/b/c")
        FileUtils.touch("c/#{path}/a/a.file")
        FileUtils.touch("c/#{path}/a/b/b.file")
        FileUtils.touch("c/#{path}/a/b/c/c.file")
      end
      bug15540 = '[ruby-core:91110] [Bug #15540]'
      assert_equal(["c/d/a/", "c/d/a/b/", "c/d/a/b/c/", "c/e/a/", "c/e/a/b/", "c/e/a/b/c/"],
                   Dir.glob('c/{d,e}/a/**/'), bug15540)

      assert_equal(["c/e/a/", "c/e/a/b/", "c/e/a/b/c/", "c/d/a/", "c/d/a/b/", "c/d/a/b/c/"],
                   Dir.glob('c/{e,d}/a/**/'))
    end
  end

  def test_glob_starts_with_brace
    Dir.chdir(@root) do
      bug15649 = '[ruby-core:91728] [Bug #15649]'
      assert_equal(["#{@root}/a", "#{@root}/b"],
                   Dir.glob("{#{@root}/a,#{@root}/b}"), bug15649)
    end
  end

  def test_glob_order
    Dir.chdir(@root) do
      assert_equal(["#{@root}/a", "#{@root}/b"], Dir.glob("#{@root}/[ba]"))
      assert_equal(["#{@root}/b", "#{@root}/a"], Dir.glob(%W"#{@root}/b #{@root}/a"))
      assert_equal(["#{@root}/b", "#{@root}/a"], Dir.glob("#{@root}/{b,a}"))
    end
    assert_equal(["a", "b"], Dir.glob("[ba]", base: @root))
    assert_equal(["b", "a"], Dir.glob(%W"b a", base: @root))
    assert_equal(["b", "a"], Dir.glob("{b,a}", base: @root))
  end

  if Process.const_defined?(:RLIMIT_NOFILE)
    def test_glob_too_may_open_files
      assert_separately([], "#{<<-"begin;"}\n#{<<-'end;'}", chdir: @root)
      begin;
        n = 16
        Process.setrlimit(Process::RLIMIT_NOFILE, n)
        files = []
        begin
          n.times {files << File.open('b')}
        rescue Errno::EMFILE, Errno::ENFILE => e
        end
        assert_raise(e.class) {
          Dir.glob('*')
        }
      end;
    end
  end

  def test_glob_base
    files = %w[a/foo.c c/bar.c]
    files.each {|n| File.write(File.join(@root, n), "")}
    Dir.mkdir(File.join(@root, "a/dir"))
    dirs = @dirs + %w[a/dir/]
    dirs.sort!

    assert_equal(files, Dir.glob("*/*.c", base: @root))
    assert_equal(files, Dir.chdir(@root) {Dir.glob("*/*.c", base: ".")})
    assert_equal(%w[foo.c], Dir.chdir(@root) {Dir.glob("*.c", base: "a")})
    assert_equal(files, Dir.chdir(@root) {Dir.glob("*/*.c", base: "")})
    assert_equal(files, Dir.chdir(@root) {Dir.glob("*/*.c", base: nil)})
    assert_equal(@dirs, Dir.glob("*/", base: @root))
    assert_equal(@dirs, Dir.chdir(@root) {Dir.glob("*/", base: ".")})
    assert_equal(%w[dir/], Dir.chdir(@root) {Dir.glob("*/", base: "a")})
    assert_equal(@dirs, Dir.chdir(@root) {Dir.glob("*/", base: "")})
    assert_equal(@dirs, Dir.chdir(@root) {Dir.glob("*/", base: nil)})
    assert_equal(dirs, Dir.glob("**/*/", base: @root))
    assert_equal(dirs, Dir.chdir(@root) {Dir.glob("**/*/", base: ".")})
    assert_equal(%w[dir/], Dir.chdir(@root) {Dir.glob("**/*/", base: "a")})
    assert_equal(dirs, Dir.chdir(@root) {Dir.glob("**/*/", base: "")})
    assert_equal(dirs, Dir.chdir(@root) {Dir.glob("**/*/", base: nil)})

    assert_equal(files, Dir.glob("*/*.c", base: @root, sort: false).sort)
    assert_equal(files, Dir.chdir(@root) {Dir.glob("*/*.c", base: ".", sort: false).sort})
    assert_equal(%w[foo.c], Dir.chdir(@root) {Dir.glob("*.c", base: "a", sort: false).sort})
    assert_equal(files, Dir.chdir(@root) {Dir.glob("*/*.c", base: "", sort: false).sort})
    assert_equal(files, Dir.chdir(@root) {Dir.glob("*/*.c", base: nil, sort: false).sort})
    assert_equal(@dirs, Dir.glob("*/", base: @root))
    assert_equal(@dirs, Dir.chdir(@root) {Dir.glob("*/", base: ".", sort: false).sort})
    assert_equal(%w[dir/], Dir.chdir(@root) {Dir.glob("*/", base: "a", sort: false).sort})
    assert_equal(@dirs, Dir.chdir(@root) {Dir.glob("*/", base: "", sort: false).sort})
    assert_equal(@dirs, Dir.chdir(@root) {Dir.glob("*/", base: nil, sort: false).sort})
    assert_equal(dirs, Dir.glob("**/*/", base: @root))
    assert_equal(dirs, Dir.chdir(@root) {Dir.glob("**/*/", base: ".", sort: false).sort})
    assert_equal(%w[dir/], Dir.chdir(@root) {Dir.glob("**/*/", base: "a", sort: false).sort})
    assert_equal(dirs, Dir.chdir(@root) {Dir.glob("**/*/", base: "", sort: false).sort})
    assert_equal(dirs, Dir.chdir(@root) {Dir.glob("**/*/", base: nil, sort: false).sort})
  end

  def test_glob_base_dir
    files = %w[a/foo.c c/bar.c]
    files.each {|n| File.write(File.join(@root, n), "")}
    Dir.mkdir(File.join(@root, "a/dir"))
    dirs = @dirs + %w[a/dir/]
    dirs.sort!

    assert_equal(files, Dir.open(@root) {|d| Dir.glob("*/*.c", base: d)})
    assert_equal(%w[foo.c], Dir.chdir(@root) {Dir.open("a") {|d| Dir.glob("*.c", base: d)}})
    assert_equal(@dirs, Dir.open(@root) {|d| Dir.glob("*/", base: d)})
    assert_equal(%w[dir/], Dir.chdir(@root) {Dir.open("a") {|d| Dir.glob("*/", base: d)}})
    assert_equal(dirs, Dir.open(@root) {|d| Dir.glob("**/*/", base: d)})
    assert_equal(%w[dir/], Dir.chdir(@root) {Dir.open("a") {|d| Dir.glob("**/*/", base: d)}})

    assert_equal(files, Dir.open(@root) {|d| Dir.glob("*/*.c", base: d, sort: false).sort})
    assert_equal(%w[foo.c], Dir.chdir(@root) {Dir.open("a") {|d| Dir.glob("*.c", base: d, sort: false).sort}})
    assert_equal(@dirs, Dir.open(@root) {|d| Dir.glob("*/", base: d, sort: false).sort})
    assert_equal(%w[dir/], Dir.chdir(@root) {Dir.open("a") {|d| Dir.glob("*/", base: d, sort: false).sort}})
    assert_equal(dirs, Dir.open(@root) {|d| Dir.glob("**/*/", base: d, sort: false).sort})
    assert_equal(%w[dir/], Dir.chdir(@root) {Dir.open("a") {|d| Dir.glob("**/*/", base: d, sort: false).sort}})
  end

  def test_glob_ignore_casefold_invalid_encoding
    bug14456 = "[ruby-core:85448]"
    filename = "\u00AAa123".encode('ISO-8859-1')
    File.write(File.join(@root, filename), "")
    matches = Dir.chdir(@root) {|d| Dir.glob("*a123".encode('UTF-8'), File::FNM_CASEFOLD)}
    assert_equal(1, matches.size, bug14456)
    matches.each{|f| f.force_encoding('ISO-8859-1')}
    # Handle MacOS/Windows, which saves under a different filename
    assert_include([filename, "\u00C2\u00AAa123".encode('ISO-8859-1')], matches.first, bug14456)
  end

  def assert_entries(entries, children_only = false)
    entries.sort!
    expected = ("a".."z").to_a
    expected = %w(. ..) + expected unless children_only
    assert_equal(expected, entries)
  end

  def test_entries
    assert_entries(Dir.open(@root) {|dir| dir.entries})
    assert_entries(Dir.entries(@root))
    assert_raise(ArgumentError) {Dir.entries(@root+"\0")}
    [Encoding::UTF_8, Encoding::ASCII_8BIT].each do |enc|
      assert_equal(enc, Dir.entries(@root, encoding: enc).first.encoding)
    end
  end

  def test_foreach
    assert_entries(Dir.open(@root) {|dir| dir.each.to_a})
    assert_entries(Dir.foreach(@root).to_a)
    assert_raise(ArgumentError) {Dir.foreach(@root+"\0").to_a}
    newdir = @root+"/new"
    e = Dir.foreach(newdir)
    assert_raise(Errno::ENOENT) {e.to_a}
    Dir.mkdir(newdir)
    File.write(newdir+"/a", "")
    assert_equal(%w[. .. a], e.to_a.sort)
    [Encoding::UTF_8, Encoding::ASCII_8BIT].each do |enc|
      e = Dir.foreach(newdir, encoding: enc)
      assert_equal(enc, e.to_a.first.encoding)
    end
  end

  def test_children
    assert_entries(Dir.open(@root) {|dir| dir.children}, true)
    assert_entries(Dir.children(@root), true)
    assert_raise(ArgumentError) {Dir.children(@root+"\0")}
    [Encoding::UTF_8, Encoding::ASCII_8BIT].each do |enc|
      assert_equal(enc, Dir.children(@root, encoding: enc).first.encoding)
    end
  end

  def test_each_child
    assert_entries(Dir.open(@root) {|dir| dir.each_child.to_a}, true)
    assert_entries(Dir.each_child(@root).to_a, true)
    assert_raise(ArgumentError) {Dir.each_child(@root+"\0").to_a}
    newdir = @root+"/new"
    e = Dir.each_child(newdir)
    assert_raise(Errno::ENOENT) {e.to_a}
    Dir.mkdir(newdir)
    File.write(newdir+"/a", "")
    assert_equal(%w[a], e.to_a)
    [Encoding::UTF_8, Encoding::ASCII_8BIT].each do |enc|
      e = Dir.each_child(newdir, encoding: enc)
      assert_equal(enc, e.to_a.first.encoding)
    end
  end

  def test_dir_enc
    dir = Dir.open(@root, encoding: "UTF-8")
    begin
      while name = dir.read
	assert_equal(Encoding.find("UTF-8"), name.encoding)
      end
    ensure
      dir.close
    end

    dir = Dir.open(@root, encoding: "ASCII-8BIT")
    begin
      while name = dir.read
	assert_equal(Encoding.find("ASCII-8BIT"), name.encoding)
      end
    ensure
      dir.close
    end
  end

  def test_unknown_keywords
    bug8060 = '[ruby-dev:47152] [Bug #8060]'
    assert_raise_with_message(ArgumentError, /unknown keyword/, bug8060) do
      Dir.open(@root, xawqij: "a") {}
    end
  end

  def test_symlink
    begin
      ["dummy", *"a".."z"].each do |f|
	File.symlink(File.join(@root, f),
		     File.join(@root, "symlink-#{ f }"))
      end
    rescue NotImplementedError, Errno::EACCES
      return
    end

    assert_equal([*"a".."z", *"symlink-a".."symlink-z"].each_slice(2).map {|f, _| File.join(@root, f + "/") }.sort,
		 Dir.glob(File.join(@root, "*/")))

    assert_equal([@root + "/", *[*"a".."z"].each_slice(2).map {|f, _| File.join(@root, f + "/") }],
                 Dir.glob(File.join(@root, "**/")))
  end

  def test_glob_metachar
    bug8597 = '[ruby-core:55764] [Bug #8597]'
    assert_empty(Dir.glob(File.join(@root, "<")), bug8597)
  end

  def test_glob_cases
    feature5994 = "[ruby-core:42469] [Feature #5994]"
    feature5994 << "\nDir.glob should return the filename with actual cases on the filesystem"
    Dir.chdir(File.join(@root, "a")) do
      open("FileWithCases", "w") {}
      return unless File.exist?("filewithcases")
      assert_equal(%w"FileWithCases", Dir.glob("filewithcases"), feature5994)
    end
    Dir.chdir(@root) do
      assert_equal(%w"a/FileWithCases", Dir.glob("A/filewithcases"), feature5994)
    end
  end

  def test_glob_super_root
    bug9648 = '[ruby-core:61552] [Bug #9648]'
    roots = Dir.glob("/*")
    assert_equal(roots.map {|n| "/..#{n}"}, Dir.glob("/../*"), bug9648)
  end

  if /mswin|mingw/ =~ RUBY_PLATFORM
    def test_glob_legacy_short_name
      bug10819 = '[ruby-core:67954] [Bug #10819]'
      bug11206 = '[ruby-core:69435] [Bug #11206]'
      skip unless /\A\w:/ =~ ENV["ProgramFiles"]
      short = "#$&/PROGRA~1"
      skip unless File.directory?(short)
      entries = Dir.glob("#{short}/Common*")
      assert_not_empty(entries, bug10819)
      long = File.expand_path(short)
      assert_equal(Dir.glob("#{long}/Common*"), entries, bug10819)
      wild = short.sub(/1\z/, '*')
      assert_not_include(Dir.glob(wild), long, bug11206)
      assert_include(Dir.glob(wild, File::FNM_SHORTNAME), long, bug10819)
      assert_empty(entries - Dir.glob("#{wild}/Common*", File::FNM_SHORTNAME), bug10819)
    end
  end

  def test_home
    env_home = ENV["HOME"]
    env_logdir = ENV["LOGDIR"]
    ENV.delete("HOME")
    ENV.delete("LOGDIR")

    ENV["HOME"] = @nodir
    assert_nothing_raised(ArgumentError) do
      assert_equal(@nodir, Dir.home)
    end
    assert_nothing_raised(ArgumentError) do
      assert_equal(@nodir, Dir.home(""))
    end
    if user = ENV["USER"]
      tilde = windows? ? "~" : "~#{user}"
      assert_nothing_raised(ArgumentError) do
        assert_equal(File.expand_path(tilde), Dir.home(user))
      end
    end
    %W[no:such:user \u{7559 5b88}:\u{756a}].each do |user|
      assert_raise_with_message(ArgumentError, /#{user}/) {Dir.home(user)}
    end
  ensure
    ENV["HOME"] = env_home
    ENV["LOGDIR"] = env_logdir
  end

  def test_symlinks_not_resolved
    Dir.mktmpdir do |dirname|
      Dir.chdir(dirname) do
        begin
          File.symlink('some-dir', 'dir-symlink')
        rescue NotImplementedError, Errno::EACCES
          return
        end

        Dir.mkdir('some-dir')
        File.write('some-dir/foo', 'some content')

        assert_equal [ 'dir-symlink', 'some-dir' ], Dir['*']
        assert_equal [ 'dir-symlink', 'some-dir', 'some-dir/foo' ], Dir['**/*']
      end
    end
  end

  def test_fileno
    Dir.open(".") {|d|
      if d.respond_to? :fileno
        assert_kind_of(Integer, d.fileno)
      else
        assert_raise(NotImplementedError) { d.fileno }
      end
    }
  end

  def test_empty?
    assert_not_send([Dir, :empty?, @root])
    a = File.join(@root, "a")
    assert_send([Dir, :empty?, a])
    %w[A .dot].each do |tmp|
      tmp = File.join(a, tmp)
      open(tmp, "w") {}
      assert_not_send([Dir, :empty?, a])
      File.delete(tmp)
      assert_send([Dir, :empty?, a])
      Dir.mkdir(tmp)
      assert_not_send([Dir, :empty?, a])
      Dir.rmdir(tmp)
      assert_send([Dir, :empty?, a])
    end
    assert_raise(Errno::ENOENT) {Dir.empty?(@nodir)}
    assert_not_send([Dir, :empty?, File.join(@root, "b")])
    assert_raise(ArgumentError) {Dir.empty?(@root+"\0")}
  end

  def test_glob_gc_for_fd
    assert_separately(["-C", @root], "#{<<-"begin;"}\n#{<<-"end;"}", timeout: 3)
    begin;
      Process.setrlimit(Process::RLIMIT_NOFILE, 50)
      begin
        fs = []
        tap {tap {tap {(0..100).each {fs << open(IO::NULL)}}}}
      rescue Errno::EMFILE
      ensure
        fs.clear
      end
      list = Dir.glob("*")
      assert_not_empty(list)
      assert_equal([*"a".."z"], list)
    end;
  end if defined?(Process::RLIMIT_NOFILE)

  def test_glob_array_with_destructive_element
    args = Array.new(100, "")
    pat = Struct.new(:ary).new(args)
    args.push(pat, *Array.new(100) {"."*40})
    def pat.to_path
      ary.clear
      GC.start
      ""
    end
    assert_empty(Dir.glob(args))
  end
end