summaryrefslogtreecommitdiff
path: root/test/ruby/test_exception.rb
blob: 6a1e4864f0102502c9dc05c2395a5143062f1006 (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
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
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
# frozen_string_literal: false
require 'test/unit'
require 'tempfile'

class TestException < Test::Unit::TestCase
  def test_exception_rescued
    begin
      raise "this must be handled"
      assert(false)
    rescue
      assert(true)
    end
  end

  def test_exception_retry
    bad = true
    begin
      raise "this must be handled no.2"
    rescue
      if bad
        bad = false
        retry
        assert(false)
      end
    end
    assert(true)
  end

  def test_exception_in_rescue
    string = "this must be handled no.3"
    assert_raise_with_message(RuntimeError, string) do
      begin
        raise "exception in rescue clause"
      rescue
        raise string
      end
      assert(false)
    end
  end

  def test_exception_in_ensure
    string = "exception in ensure clause"
    assert_raise_with_message(RuntimeError, string) do
      begin
        raise "this must be handled no.4"
      ensure
        assert_instance_of(RuntimeError, $!)
        assert_equal("this must be handled no.4", $!.message)
        raise "exception in ensure clause"
      end
      assert(false)
    end
  end

  def test_exception_ensure
    bad = true
    begin
      begin
        raise "this must be handled no.5"
      ensure
        bad = false
      end
    rescue
    end
    assert(!bad)
  end

  def test_exception_ensure_2   # just duplication?
    bad = true
    begin
      begin
        raise "this must be handled no.6"
      ensure
        bad = false
      end
    rescue
    end
    assert(!bad)
  end

  def test_errinfo_in_debug
    bug9568 = EnvUtil.labeled_class("[ruby-core:61091] [Bug #9568]", RuntimeError) do
      def to_s
        require '\0'
      rescue LoadError
        self.class.to_s
      end
    end

    err = EnvUtil.verbose_warning do
      assert_raise(bug9568) do
        $DEBUG, debug = true, $DEBUG
        begin
          raise bug9568
        ensure
          $DEBUG = debug
        end
      end
    end
    assert_include(err, bug9568.to_s)
  end

  def test_errinfo_encoding_in_debug
    exc = Module.new {break class_eval("class C\u{30a8 30e9 30fc} < RuntimeError; self; end".encode(Encoding::EUC_JP))}
    exc.inspect

    err = EnvUtil.verbose_warning do
      assert_raise(exc) do
        $DEBUG, debug = true, $DEBUG
        begin
          raise exc
        ensure
          $DEBUG = debug
        end
      end
    end
    assert_include(err, exc.to_s)
  end

  def test_break_ensure
    bad = true
    while true
      begin
        break
      ensure
        bad = false
      end
    end
    assert(!bad)
  end

  def test_catch_no_throw
    assert_equal(:foo, catch {:foo})
  end

  def test_catch_throw
    result = catch(:foo) {
      loop do
        loop do
          throw :foo, true
          break
        end
        assert(false, "should not reach here")
      end
      false
    }
    assert(result)
  end

  def test_catch_throw_noarg
    assert_nothing_raised(UncaughtThrowError) {
      result = catch {|obj|
        throw obj, :ok
        assert(false, "should not reach here")
      }
      assert_equal(:ok, result)
    }
  end

  def test_uncaught_throw
    tag = nil
    e = assert_raise_with_message(UncaughtThrowError, /uncaught throw/) {
      catch("foo") {|obj|
        tag = obj.dup
        throw tag, :ok
        assert(false, "should not reach here")
      }
      assert(false, "should not reach here")
    }
    assert_not_nil(tag)
    assert_same(tag, e.tag)
    assert_equal(:ok, e.value)
  end

  def test_catch_throw_in_require
    bug7185 = '[ruby-dev:46234]'
    Tempfile.create(["dep", ".rb"]) {|t|
      t.puts("throw :extdep, 42")
      t.close
      assert_equal(42, assert_throw(:extdep, bug7185) {require t.path}, bug7185)
    }
  end

  def test_else_no_exception
    begin
      assert(true)
    rescue
      assert(false)
    else
      assert(true)
    end
  end

  def test_else_raised
    begin
      assert(true)
      raise
      assert(false)
    rescue
      assert(true)
    else
      assert(false)
    end
  end

  def test_else_nested_no_exception
    begin
      assert(true)
      begin
	assert(true)
      rescue
	assert(false)
      else
	assert(true)
      end
      assert(true)
    rescue
      assert(false)
    else
      assert(true)
    end
  end

  def test_else_nested_rescued
    begin
      assert(true)
      begin
	assert(true)
	raise
	assert(false)
      rescue
	assert(true)
      else
	assert(false)
      end
      assert(true)
    rescue
      assert(false)
    else
      assert(true)
    end
  end

  def test_else_nested_unrescued
    begin
      assert(true)
      begin
	assert(true)
      rescue
	assert(false)
      else
	assert(true)
      end
      assert(true)
      raise
      assert(false)
    rescue
      assert(true)
    else
      assert(false)
    end
  end

  def test_else_nested_rescued_reraise
    begin
      assert(true)
      begin
	assert(true)
	raise
	assert(false)
      rescue
	assert(true)
      else
	assert(false)
      end
      assert(true)
      raise
      assert(false)
    rescue
      assert(true)
    else
      assert(false)
    end
  end

  def test_raise_with_wrong_number_of_arguments
    assert_raise(TypeError) { raise nil }
    assert_raise(TypeError) { raise 1, 1 }
    assert_raise(ArgumentError) { raise 1, 1, 1, 1 }
  end

  def test_type_error_message_encoding
    c = eval("Module.new do break class C\u{4032}; self; end; end")
    o = c.new
    assert_raise_with_message(TypeError, /C\u{4032}/) do
      ""[o]
    end
    c.class_eval {def to_int; self; end}
    assert_raise_with_message(TypeError, /C\u{4032}/) do
      ""[o]
    end
    c.class_eval {def to_a; self; end}
    assert_raise_with_message(TypeError, /C\u{4032}/) do
      [*o]
    end
    obj = eval("class C\u{1f5ff}; self; end").new
    assert_raise_with_message(TypeError, /C\u{1f5ff}/) do
      Class.new {include obj}
    end
  end

  def test_errat
    assert_in_out_err([], "p $@", %w(nil), [])

    assert_in_out_err([], "$@ = 1", [], /\$! not set \(ArgumentError\)$/)

    assert_in_out_err([], <<-INPUT, [], /backtrace must be Array of String \(TypeError\)$/)
      begin
        raise
      rescue
        $@ = 1
      end
    INPUT

    assert_in_out_err([], <<-INPUT, [], /^foo: unhandled exception$/)
      begin
        raise
      rescue
        $@ = 'foo'
        raise
      end
    INPUT

    assert_in_out_err([], <<-INPUT, [], /^foo: unhandled exception\s+from bar\s+from baz$/)
      begin
        raise
      rescue
        $@ = %w(foo bar baz)
        raise
      end
    INPUT
  end

  def test_thread_signal_location
    _, stderr, _ = EnvUtil.invoke_ruby("--disable-gems -d", <<-RUBY, false, true)
Thread.start do
  begin
    Process.kill(:INT, $$)
  ensure
    raise "in ensure"
  end
end.join
    RUBY
    assert_not_match(/:0/, stderr, "[ruby-dev:39116]")
  end

  def test_errinfo
    begin
      raise "foo"
      assert(false)
    rescue => e
      assert_equal(e, $!)
      1.times { assert_equal(e, $!) }
    end

    assert_equal(nil, $!)
  end

  def test_inspect
    assert_equal("#<Exception: Exception>", Exception.new.inspect)

    e = Class.new(Exception)
    e.class_eval do
      def to_s; ""; end
    end
    assert_equal(e.inspect, e.new.inspect)
  end

  def test_to_s
    e = StandardError.new("foo")
    assert_equal("foo", e.to_s)

    def (s = Object.new).to_s
      "bar"
    end
    e = StandardError.new(s)
    assert_equal("bar", e.to_s)
  end

  def test_set_backtrace
    e = Exception.new

    e.set_backtrace("foo")
    assert_equal(["foo"], e.backtrace)

    e.set_backtrace(%w(foo bar baz))
    assert_equal(%w(foo bar baz), e.backtrace)

    assert_raise(TypeError) { e.set_backtrace(1) }
    assert_raise(TypeError) { e.set_backtrace([1]) }
  end

  def test_exit_success_p
    begin
      exit
    rescue SystemExit => e
    end
    assert_send([e, :success?], "success by default")

    begin
      exit(true)
    rescue SystemExit => e
    end
    assert_send([e, :success?], "true means success")

    begin
      exit(false)
    rescue SystemExit => e
    end
    assert_not_send([e, :success?], "false means failure")

    begin
      abort
    rescue SystemExit => e
    end
    assert_not_send([e, :success?], "abort means failure")
  end

  def test_nomethoderror
    bug3237 = '[ruby-core:29948]'
    str = "\u2600"
    id = :"\u2604"
    EnvUtil.with_default_external(Encoding::UTF_8) do
      msg = "undefined method `#{id}' for #{str.inspect}:String"
      assert_raise_with_message(NoMethodError, msg, bug3237) do
        str.__send__(id)
      end
    end
  end

  def test_errno
    assert_equal(Encoding.find("locale"), Errno::EINVAL.new.message.encoding)
  end

  def test_too_many_args_in_eval
    bug5720 = '[ruby-core:41520]'
    arg_string = (0...140000).to_a.join(", ")
    assert_raise(SystemStackError, bug5720) {eval "raise(#{arg_string})"}
  end

  def test_systemexit_new
    e0 = SystemExit.new
    assert_equal(0, e0.status)
    assert_equal("SystemExit", e0.message)
    ei = SystemExit.new(3)
    assert_equal(3, ei.status)
    assert_equal("SystemExit", ei.message)
    es = SystemExit.new("msg")
    assert_equal(0, es.status)
    assert_equal("msg", es.message)
    eis = SystemExit.new(7, "msg")
    assert_equal(7, eis.status)
    assert_equal("msg", eis.message)

    bug5728 = '[ruby-dev:44951]'
    et = SystemExit.new(true)
    assert_equal(true, et.success?, bug5728)
    assert_equal("SystemExit", et.message, bug5728)
    ef = SystemExit.new(false)
    assert_equal(false, ef.success?, bug5728)
    assert_equal("SystemExit", ef.message, bug5728)
    ets = SystemExit.new(true, "msg")
    assert_equal(true, ets.success?, bug5728)
    assert_equal("msg", ets.message, bug5728)
    efs = SystemExit.new(false, "msg")
    assert_equal(false, efs.success?, bug5728)
    assert_equal("msg", efs.message, bug5728)
  end

  def test_exception_in_name_error_to_str
    bug5575 = '[ruby-core:41612]'
    Tempfile.create(["test_exception_in_name_error_to_str", ".rb"]) do |t|
      t.puts <<-EOC
      begin
        BasicObject.new.inspect
      rescue
        $!.inspect
      end
    EOC
      t.close
      assert_nothing_raised(NameError, bug5575) do
        load(t.path)
      end
    end
  end

  def test_equal
    bug5865 = '[ruby-core:41979]'
    assert_equal(RuntimeError.new("a"), RuntimeError.new("a"), bug5865)
    assert_not_equal(RuntimeError.new("a"), StandardError.new("a"), bug5865)
  end

  def test_exception_in_exception_equal
    bug5865 = '[ruby-core:41979]'
    Tempfile.create(["test_exception_in_exception_equal", ".rb"]) do |t|
      t.puts <<-EOC
      o = Object.new
      def o.exception(arg)
      end
      _ = RuntimeError.new("a") == o
      EOC
      t.close
      assert_nothing_raised(ArgumentError, bug5865) do
        load(t.path)
      end
    end
  end

  Bug4438 = '[ruby-core:35364]'

  def test_rescue_single_argument
    assert_raise(TypeError, Bug4438) do
      begin
        raise
      rescue 1
      end
    end
  end

  def test_rescue_splat_argument
    assert_raise(TypeError, Bug4438) do
      begin
        raise
      rescue *Array(1)
      end
    end
  end

  def test_to_s_taintness_propagation
    for exc in [Exception, NameError]
      m = "abcdefg"
      e = exc.new(m)
      e.taint
      s = e.to_s
      assert_equal(false, m.tainted?,
                   "#{exc}#to_s should not propagate taintness")
      assert_equal(false, s.tainted?,
                   "#{exc}#to_s should not propagate taintness")
    end

    o = Object.new
    def o.to_str
      "foo"
    end
    o.taint
    e = NameError.new(o)
    s = e.to_s
    assert_equal(false, s.tainted?)
  end

  def m
    m(&->{return 0})
    42
  end

  def test_stackoverflow
    feature6216 = '[ruby-core:43794] [Feature #6216]'
    e = assert_raise(SystemStackError, feature6216) {m}
    level = e.backtrace.size
    assert_operator(level, :>, 10, feature6216)

    feature6216 = '[ruby-core:63377] [Feature #6216]'
    e = assert_raise(SystemStackError, feature6216) {raise e}
    assert_equal(level, e.backtrace.size, feature6216)
  end

  def test_machine_stackoverflow
    bug9109 = '[ruby-dev:47804] [Bug #9109]'
    assert_separately(%w[--disable-gem], <<-SRC)
    assert_raise(SystemStackError, #{bug9109.dump}) {
      h = {a: ->{h[:a].call}}
      h[:a].call
    }
    SRC
  rescue SystemStackError
  end

  def test_machine_stackoverflow_by_define_method
    bug9454 = '[ruby-core:60113] [Bug #9454]'
    assert_separately(%w[--disable-gem], <<-SRC)
    assert_raise(SystemStackError, #{bug9454.dump}) {
      define_method(:foo) {self.foo}
      self.foo
    }
    SRC
  rescue SystemStackError
  end

  def test_cause
    msg = "[Feature #8257]"
    cause = nil
    e = assert_raise(StandardError) {
      begin
        raise msg
      rescue => e
        cause = e.cause
        raise StandardError
      end
    }
    assert_nil(cause, msg)
    cause = e.cause
    assert_instance_of(RuntimeError, cause, msg)
    assert_equal(msg, cause.message, msg)
  end

  def test_cause_reraised
    msg = "[Feature #8257]"
    e = assert_raise(RuntimeError) {
      begin
        raise msg
      rescue => e
        raise e
      end
    }
    assert_not_same(e, e.cause, "#{msg}: should not be recursive")
  end

  def test_cause_raised_in_rescue
    e = assert_raise_with_message(RuntimeError, 'b') {
      begin
        raise 'a'
      rescue => a
        begin
          raise 'b'
        rescue => b
          begin
            raise 'c'
          rescue
            raise b
          end
        end
      end
    }
    assert_equal('a', e.cause.message, 'cause should not be overwritten by reraise')
  end

  def test_cause_at_raised
    e = assert_raise_with_message(RuntimeError, 'b') {
      begin
        raise 'a'
      rescue => a
        b = RuntimeError.new('b')
        begin
          raise 'c'
        rescue
          raise b
        end
      end
    }
    assert_equal('c', e.cause.message, 'cause should be the exception at raised')
  end

  def test_cause_at_raised
  end

  def test_raise_with_cause
    msg = "[Feature #8257]"
    cause = ArgumentError.new("foobar")
    e = assert_raise(RuntimeError) {raise msg, cause: cause}
    assert_same(cause, e.cause)
  end

  def test_cause_with_no_arguments
    cause = ArgumentError.new("foobar")
    assert_raise_with_message(ArgumentError, /with no arguments/) do
      raise cause: cause
    end
  end

  def test_raise_with_cause_in_rescue
    e = assert_raise_with_message(RuntimeError, 'b') {
      begin
        raise 'a'
      rescue => a
        begin
          raise 'b'
        rescue => b
          begin
            raise 'c'
          rescue
            raise b, cause: ArgumentError.new('d')
          end
        end
      end
    }
    assert_equal('d', e.cause.message, 'cause option should be honored always')
  end

  def test_unknown_option
    bug = '[ruby-core:63203] [Feature #8257] should pass unknown options'

    exc = Class.new(RuntimeError) do
      attr_reader :arg
      def initialize(msg = nil)
        @arg = msg
        super(msg)
      end
    end

    e = assert_raise(exc, bug) {raise exc, "foo" => "bar", foo: "bar"}
    assert_equal({"foo" => "bar", foo: "bar"}, e.arg, bug)

    e = assert_raise(exc, bug) {raise exc, "foo" => "bar", foo: "bar", cause: "zzz"}
    assert_equal({"foo" => "bar", foo: "bar"}, e.arg, bug)

    e = assert_raise(exc, bug) {raise exc, {}}
    assert_equal({}, e.arg, bug)
  end

  def test_anonymous_message
    assert_in_out_err([], "raise Class.new(RuntimeError), 'foo'", [], /foo\n/)
  end

  def test_name_error_info
    obj = BasicObject.new
    class << obj
      alias object_id __id__
      def pretty_inspect; "`obj'"; end
    end
    e = assert_raise(NameError) {
      obj.instance_eval("Object")
    }
    assert_equal(:Object, e.name)
    e = assert_raise(NameError) {
      BasicObject::X
    }
    assert_same(BasicObject, e.receiver)
    e = assert_raise(NameError) {
      obj.instance_eval {foo}
    }
    assert_equal(:foo, e.name)
    assert_same(obj, e.receiver)
    e = assert_raise(NoMethodError) {
      obj.foo(1, 2)
    }
    assert_equal(:foo, e.name)
    assert_equal([1, 2], e.args)
    assert_same(obj, e.receiver)
    e = assert_raise(NoMethodError) {
      obj.instance_eval {foo(1, 2)}
    }
    assert_equal(:foo, e.name)
    assert_equal([1, 2], e.args)
    assert_same(obj, e.receiver)
    def obj.test(a, b=nil, *c, &d)
      e = a
      1.times {|f| g = foo}
    end
    e = assert_raise(NameError) {
      obj.test(3)
    }
    assert_equal(:foo, e.name)
    assert_same(obj, e.receiver)
    assert_equal(%i[a b c d e f g], e.local_variables.sort)
  end

  def test_name_error_info_parent_iseq_mark
    assert_separately(['-', File.join(__dir__, 'bug-11928.rb')], <<-'end;')
      -> {require ARGV[0]}.call
    end;
  end

  def test_output_string_encoding
    # "\x82\xa0" in cp932 is "\u3042" (Japanese hiragana 'a')
    # change $stderr to force calling rb_io_write() instead of fwrite()
    assert_in_out_err(["-Eutf-8:cp932"], '# coding: cp932
$stderr = $stdout; raise "\x82\xa0"') do |outs, errs, status|
      assert_equal 1, outs.size
      assert_equal 0, errs.size
      err = outs.first.force_encoding('utf-8')
      assert err.valid_encoding?, 'must be valid encoding'
      assert_match /\u3042/, err
    end
  end

  def test_multibyte_and_newline
    bug10727 = '[ruby-core:67473] [Bug #10727]'
    assert_in_out_err([], <<-'end;', [], /\u{306b 307b 3093 3054} \(E\)\n\u{6539 884c}/, bug10727, encoding: "UTF-8")
      class E < StandardError
        def initialize
          super("\u{306b 307b 3093 3054}\n\u{6539 884c}")
        end
      end
      raise E
    end;
  end

  def test_method_missing_reason_clear
    bug10969 = '[ruby-core:68515] [Bug #10969]'
    a = Class.new {def method_missing(*) super end}.new
    assert_raise(NameError) {a.instance_eval("foo")}
    assert_raise(NoMethodError, bug10969) {a.public_send("bar", true)}
  end

  def test_message_of_name_error
    assert_raise_with_message(NameError, /\Aundefined method `foo' for module `#<Module:.*>'$/) do
      Module.new do
        module_function :foo
      end
    end
  end
end