This file is indexed.

/usr/lib/ruby/1.9.1/minitest/unit.rb is in libruby1.9.1 1.9.3.0-1ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

   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
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
######################################################################
# This file is imported from the minitest project.
# DO NOT make modifications in this repo. They _will_ be reverted!
# File a patch instead and assign it to Ryan Davis.
######################################################################

require 'optparse'
require 'rbconfig'

##
# Minimal (mostly drop-in) replacement for test-unit.
#
# :include: README.txt

module MiniTest

  ##
  # Assertion base class

  class Assertion < Exception; end

  ##
  # Assertion raised when skipping a test

  class Skip < Assertion; end

  file = if RUBY_VERSION =~ /^1\.9/ then  # bt's expanded, but __FILE__ isn't :(
           File.expand_path __FILE__
         elsif  __FILE__ =~ /^[^\.]/ then # assume both relative
           require 'pathname'
           pwd = Pathname.new Dir.pwd
           pn = Pathname.new File.expand_path(__FILE__)
           relpath = pn.relative_path_from(pwd) rescue pn
           pn = File.join ".", relpath unless pn.relative?
           pn.to_s
         else                             # assume both are expanded
           __FILE__
         end

  # './lib' in project dir, or '/usr/local/blahblah' if installed
  MINI_DIR = File.dirname(File.dirname(file)) # :nodoc:

  def self.filter_backtrace bt # :nodoc:
    return ["No backtrace"] unless bt

    new_bt = []

    unless $DEBUG then
      bt.each do |line|
        break if line.rindex MINI_DIR, 0
        new_bt << line
      end

      new_bt = bt.reject { |line| line.rindex MINI_DIR, 0 } if new_bt.empty?
      new_bt = bt.dup if new_bt.empty?
    else
      new_bt = bt.dup
    end

    new_bt
  end

  ##
  # MiniTest Assertions.  All assertion methods accept a +msg+ which is
  # printed if the assertion fails.

  module Assertions

    WINDOZE = RbConfig::CONFIG['host_os'] =~ /mswin|mingw/

    ##
    # Returns the diff command to use in #diff. Tries to intelligently
    # figure out what diff to use.

    def self.diff
      @diff = if WINDOZE
                "diff.exe -u"
              else
                if system("gdiff", __FILE__, __FILE__)
                  "gdiff -u" # solaris and kin suck
                elsif system("diff", __FILE__, __FILE__)
                  "diff -u"
                else
                  nil
                end
              end unless defined? @diff

      @diff
    end

    ##
    # Set the diff command to use in #diff.

    def self.diff= o
      @diff = o
    end

    ##
    # Returns a diff between +exp+ and +act+. If there is no known
    # diff command or if it doesn't make sense to diff the output
    # (single line, short output), then it simply returns a basic
    # comparison between the two.

    def diff exp, act
      require "tempfile"

      expect = mu_pp_for_diff exp
      butwas = mu_pp_for_diff act
      result = nil

      need_to_diff =
        MiniTest::Assertions.diff &&
        (expect.include?("\n")    ||
         butwas.include?("\n")    ||
         expect.size > 30         ||
         butwas.size > 30         ||
         expect == butwas)

      return "Expected: #{mu_pp exp}\n  Actual: #{mu_pp act}" unless
        need_to_diff

      Tempfile.open("expect") do |a|
        a.puts expect
        a.flush

        Tempfile.open("butwas") do |b|
          b.puts butwas
          b.flush

          result = `#{MiniTest::Assertions.diff} #{a.path} #{b.path}`
          result.sub!(/^\-\-\- .+/, "--- expected")
          result.sub!(/^\+\+\+ .+/, "+++ actual")

          if result.empty? then
            klass = exp.class
            result = [
                      "No visible difference.",
                      "You should look at your implementation of #{klass}#==.",
                      expect
                     ].join "\n"
          end
        end
      end

      result
    end

    ##
    # This returns a human-readable version of +obj+. By default
    # #inspect is called. You can override this to use #pretty_print
    # if you want.

    def mu_pp obj
      s = obj.inspect
      s = s.encode Encoding.default_external if defined? Encoding
      s
    end

    ##
    # This returns a diff-able human-readable version of +obj+. This
    # differs from the regular mu_pp because it expands escaped
    # newlines and makes hex-values generic (like object_ids). This
    # uses mu_pp to do the first pass and then cleans it up.

    def mu_pp_for_diff obj # TODO: possibly rename
      mu_pp(obj).gsub(/\\n/, "\n").gsub(/0x[a-f0-9]+/m, '0xXXXXXX')
    end

    def _assertions= n # :nodoc:
      @_assertions = n
    end

    def _assertions # :nodoc:
      @_assertions ||= 0
    end

    ##
    # Fails unless +test+ is a true value.

    def assert test, msg = nil
      msg ||= "Failed assertion, no message given."
      self._assertions += 1
      unless test then
        msg = msg.call if Proc === msg
        raise MiniTest::Assertion, msg
      end
      true
    end

    ##
    # Fails unless the block returns a true value.

    def assert_block msg = nil
      msg = message(msg) { "Expected block to return true value" }
      assert yield, msg
    end

    ##
    # Fails unless +obj+ is empty.

    def assert_empty obj, msg = nil
      msg = message(msg) { "Expected #{mu_pp(obj)} to be empty" }
      assert_respond_to obj, :empty?
      assert obj.empty?, msg
    end

    ##
    # Fails unless <tt>exp == act</tt> printing the difference between
    # the two, if possible.
    #
    # If there is no visible difference but the assertion fails, you
    # should suspect that your #== is buggy, or your inspect output is
    # missing crucial details.
    #
    # For floats use assert_in_delta.
    #
    # See also: MiniTest::Assertions.diff

    def assert_equal exp, act, msg = nil
      msg = message(msg, "") { diff exp, act }
      assert(exp == act, msg)
    end

    ##
    # For comparing Floats.  Fails unless +exp+ and +act+ are within +delta+
    # of each other.
    #
    #   assert_in_delta Math::PI, (22.0 / 7.0), 0.01

    def assert_in_delta exp, act, delta = 0.001, msg = nil
      n = (exp - act).abs
      msg = message(msg) { "Expected #{exp} - #{act} (#{n}) to be < #{delta}" }
      assert delta >= n, msg
    end

    ##
    # For comparing Floats.  Fails unless +exp+ and +act+ have a relative
    # error less than +epsilon+.

    def assert_in_epsilon a, b, epsilon = 0.001, msg = nil
      assert_in_delta a, b, [a, b].min * epsilon, msg
    end

    ##
    # Fails unless +collection+ includes +obj+.

    def assert_includes collection, obj, msg = nil
      msg = message(msg) {
        "Expected #{mu_pp(collection)} to include #{mu_pp(obj)}"
      }
      assert_respond_to collection, :include?
      assert collection.include?(obj), msg
    end

    ##
    # Fails unless +obj+ is an instace of +cls+.

    def assert_instance_of cls, obj, msg = nil
      msg = message(msg) {
        "Expected #{mu_pp(obj)} to be an instance of #{cls}, not #{obj.class}"
      }

      assert obj.instance_of?(cls), msg
    end

    ##
    # Fails unless +obj+ is a kind of +cls+.

    def assert_kind_of cls, obj, msg = nil # TODO: merge with instance_of
      msg = message(msg) {
        "Expected #{mu_pp(obj)} to be a kind of #{cls}, not #{obj.class}" }

      assert obj.kind_of?(cls), msg
    end

    ##
    # Fails unless +exp+ is <tt>=~</tt> +act+.

    def assert_match exp, act, msg = nil
      msg = message(msg) { "Expected #{mu_pp(exp)} to match #{mu_pp(act)}" }
      assert_respond_to act, :"=~"
      exp = Regexp.new Regexp.escape exp if String === exp and String === act
      assert exp =~ act, msg
    end

    ##
    # Fails unless +obj+ is nil

    def assert_nil obj, msg = nil
      msg = message(msg) { "Expected #{mu_pp(obj)} to be nil" }
      assert obj.nil?, msg
    end

    ##
    # For testing equality operators and so-forth.
    #
    #   assert_operator 5, :<=, 4

    def assert_operator o1, op, o2, msg = nil
      msg = message(msg) { "Expected #{mu_pp(o1)} to be #{op} #{mu_pp(o2)}" }
      assert o1.__send__(op, o2), msg
    end

    ##
    # Fails if stdout or stderr do not output the expected results.
    # Pass in nil if you don't care about that streams output. Pass in
    # "" if you require it to be silent.
    #
    # See also: #assert_silent

    def assert_output stdout = nil, stderr = nil
      out, err = capture_io do
        yield
      end

      x = assert_equal stdout, out, "In stdout" if stdout
      y = assert_equal stderr, err, "In stderr" if stderr

      (!stdout || x) && (!stderr || y)
    end

    ##
    # Fails unless the block raises one of +exp+

    def assert_raises *exp
      msg = "#{exp.pop}\n" if String === exp.last

      should_raise = false
      begin
        yield
        should_raise = true
      rescue MiniTest::Skip => e
        details = "#{msg}#{mu_pp(exp)} exception expected, not"

        if exp.include? MiniTest::Skip then
          return e
        else
          raise e
        end
      rescue Exception => e
        details = "#{msg}#{mu_pp(exp)} exception expected, not"
        assert(exp.any? { |ex|
                 ex.instance_of?(Module) ? e.kind_of?(ex) : ex == e.class
               }, exception_details(e, details))

        return e
      end

      exp = exp.first if exp.size == 1
      flunk "#{msg}#{mu_pp(exp)} expected but nothing was raised." if
        should_raise
    end

    ##
    # Fails unless +obj+ responds to +meth+.

    def assert_respond_to obj, meth, msg = nil
      msg = message(msg) {
        "Expected #{mu_pp(obj)} (#{obj.class}) to respond to ##{meth}"
      }
      assert obj.respond_to?(meth), msg
    end

    ##
    # Fails unless +exp+ and +act+ are #equal?

    def assert_same exp, act, msg = nil
      msg = message(msg) {
        data = [mu_pp(act), act.object_id, mu_pp(exp), exp.object_id]
        "Expected %s (oid=%d) to be the same as %s (oid=%d)" % data
      }
      assert exp.equal?(act), msg
    end

    ##
    # +send_ary+ is a receiver, message and arguments.
    #
    # Fails unless the call returns a true value
    # TODO: I should prolly remove this from specs

    def assert_send send_ary, m = nil
      recv, msg, *args = send_ary
      m = message(m) {
        "Expected #{mu_pp(recv)}.#{msg}(*#{mu_pp(args)}) to return true" }
      assert recv.__send__(msg, *args), m
    end

    ##
    # Fails if the block outputs anything to stderr or stdout.
    #
    # See also: #assert_output

    def assert_silent
      assert_output "", "" do
        yield
      end
    end

    ##
    # Fails unless the block throws +sym+

    def assert_throws sym, msg = nil
      default = "Expected #{mu_pp(sym)} to have been thrown"
      caught = true
      catch(sym) do
        begin
          yield
        rescue ArgumentError => e     # 1.9 exception
          default += ", not #{e.message.split(/ /).last}"
        rescue NameError => e         # 1.8 exception
          default += ", not #{e.name.inspect}"
        end
        caught = false
      end

      assert caught, message(msg) { default }
    end

    ##
    # Captures $stdout and $stderr into strings:
    #
    #   out, err = capture_io do
    #     warn "You did a bad thing"
    #   end
    #
    #   assert_match %r%bad%, err

    def capture_io
      require 'stringio'

      orig_stdout, orig_stderr         = $stdout, $stderr
      captured_stdout, captured_stderr = StringIO.new, StringIO.new
      $stdout, $stderr                 = captured_stdout, captured_stderr

      yield

      return captured_stdout.string, captured_stderr.string
    ensure
      $stdout = orig_stdout
      $stderr = orig_stderr
    end

    ##
    # Returns details for exception +e+

    def exception_details e, msg
      [
       "#{msg}",
       "Class: <#{e.class}>",
       "Message: <#{e.message.inspect}>",
       "---Backtrace---",
       "#{MiniTest::filter_backtrace(e.backtrace).join("\n")}",
       "---------------",
      ].join "\n"
    end

    ##
    # Fails with +msg+

    def flunk msg = nil
      msg ||= "Epic Fail!"
      assert false, msg
    end

    ##
    # Returns a proc that will output +msg+ along with the default message.

    def message msg = nil, ending = ".", &default
      proc {
        custom_message = "#{msg}.\n" unless msg.nil? or msg.to_s.empty?
        "#{custom_message}#{default.call}#{ending}"
      }
    end

    ##
    # used for counting assertions

    def pass msg = nil
      assert true
    end

    ##
    # Fails if +test+ is a true value

    def refute test, msg = nil
      msg ||= "Failed refutation, no message given"
      not assert(! test, msg)
    end

    ##
    # Fails if +obj+ is empty.

    def refute_empty obj, msg = nil
      msg = message(msg) { "Expected #{mu_pp(obj)} to not be empty" }
      assert_respond_to obj, :empty?
      refute obj.empty?, msg
    end

    ##
    # Fails if <tt>exp == act</tt>.
    #
    # For floats use refute_in_delta.

    def refute_equal exp, act, msg = nil
      msg = message(msg) {
        "Expected #{mu_pp(act)} to not be equal to #{mu_pp(exp)}"
      }
      refute exp == act, msg
    end

    ##
    # For comparing Floats.  Fails if +exp+ is within +delta+ of +act+
    #
    #   refute_in_delta Math::PI, (22.0 / 7.0)

    def refute_in_delta exp, act, delta = 0.001, msg = nil
      n = (exp - act).abs
      msg = message(msg) {
        "Expected #{exp} - #{act} (#{n}) to not be < #{delta}"
      }
      refute delta > n, msg
    end

    ##
    # For comparing Floats.  Fails if +exp+ and +act+ have a relative error
    # less than +epsilon+.

    def refute_in_epsilon a, b, epsilon = 0.001, msg = nil
      refute_in_delta a, b, a * epsilon, msg
    end

    ##
    # Fails if +collection+ includes +obj+

    def refute_includes collection, obj, msg = nil
      msg = message(msg) {
        "Expected #{mu_pp(collection)} to not include #{mu_pp(obj)}"
      }
      assert_respond_to collection, :include?
      refute collection.include?(obj), msg
    end

    ##
    # Fails if +obj+ is an instance of +cls+

    def refute_instance_of cls, obj, msg = nil
      msg = message(msg) {
        "Expected #{mu_pp(obj)} to not be an instance of #{cls}"
      }
      refute obj.instance_of?(cls), msg
    end

    ##
    # Fails if +obj+ is a kind of +cls+

    def refute_kind_of cls, obj, msg = nil # TODO: merge with instance_of
      msg = message(msg) { "Expected #{mu_pp(obj)} to not be a kind of #{cls}" }
      refute obj.kind_of?(cls), msg
    end

    ##
    # Fails if +exp+ <tt>=~</tt> +act+

    def refute_match exp, act, msg = nil
      msg = message(msg) { "Expected #{mu_pp(exp)} to not match #{mu_pp(act)}" }
      assert_respond_to act, :"=~"
      exp = (/#{Regexp.escape exp}/) if String === exp and String === act
      refute exp =~ act, msg
    end

    ##
    # Fails if +obj+ is nil.

    def refute_nil obj, msg = nil
      msg = message(msg) { "Expected #{mu_pp(obj)} to not be nil" }
      refute obj.nil?, msg
    end

    ##
    # Fails if +o1+ is not +op+ +o2+. Eg:
    #
    #   refute_operator 1, :>, 2 #=> pass
    #   refute_operator 1, :<, 2 #=> fail

    def refute_operator o1, op, o2, msg = nil
      msg = message(msg) {
        "Expected #{mu_pp(o1)} to not be #{op} #{mu_pp(o2)}"
      }
      refute o1.__send__(op, o2), msg
    end

    ##
    # Fails if +obj+ responds to the message +meth+.

    def refute_respond_to obj, meth, msg = nil
      msg = message(msg) { "Expected #{mu_pp(obj)} to not respond to #{meth}" }

      refute obj.respond_to?(meth), msg
    end

    ##
    # Fails if +exp+ is the same (by object identity) as +act+.

    def refute_same exp, act, msg = nil
      msg = message(msg) {
        data = [mu_pp(act), act.object_id, mu_pp(exp), exp.object_id]
        "Expected %s (oid=%d) to not be the same as %s (oid=%d)" % data
      }
      refute exp.equal?(act), msg
    end

    ##
    # Skips the current test. Gets listed at the end of the run but
    # doesn't cause a failure exit code.

    def skip msg = nil, bt = caller
      msg ||= "Skipped, no message given"
      raise MiniTest::Skip, msg, bt
    end
  end

  class Unit
    VERSION = "2.5.1" # :nodoc:

    attr_accessor :report, :failures, :errors, :skips # :nodoc:
    attr_accessor :test_count, :assertion_count       # :nodoc:
    attr_accessor :start_time                         # :nodoc:
    attr_accessor :help                               # :nodoc:
    attr_accessor :verbose                            # :nodoc:
    attr_writer   :options                            # :nodoc:

    def options
      @options ||= {}
    end

    @@installed_at_exit ||= false
    @@out = $stdout

    ##
    # A simple hook allowing you to run a block of code after the
    # tests are done. Eg:
    #
    #   MiniTest::Unit.after_tests { p $debugging_info }

    def self.after_tests
      at_exit { at_exit { yield } }
    end

    ##
    # Registers MiniTest::Unit to run tests at process exit

    def self.autorun
      at_exit {
        next if $! # don't run if there was an exception

        # the order here is important. The at_exit handler must be
        # installed before anyone else gets a chance to install their
        # own, that way we can be assured that our exit will be last
        # to run (at_exit stacks).
        exit_code = nil

        at_exit { exit false if exit_code && exit_code != 0 }

        exit_code = MiniTest::Unit.new.run ARGV
      } unless @@installed_at_exit
      @@installed_at_exit = true
    end

    ##
    # Returns the stream to use for output.

    def self.output
      @@out
    end

    ##
    # Returns the stream to use for output.
    #
    # DEPRECATED: use ::output instead.

    def self.out
      warn "::out deprecated, use ::output instead." if $VERBOSE
      output
    end

    ##
    # Sets MiniTest::Unit to write output to +stream+.  $stdout is the default
    # output

    def self.output= stream
      @@out = stream
    end

    ##
    # Tells MiniTest::Unit to delegate to +runner+, an instance of a
    # MiniTest::Unit subclass, when MiniTest::Unit#run is called.

    def self.runner= runner
      @@runner = runner
    end

    ##
    # Returns the MiniTest::Unit subclass instance that will be used
    # to run the tests. A MiniTest::Unit instance is the default
    # runner.

    def self.runner
      @@runner ||= self.new
    end

    ##
    # Return all plugins' run methods (methods that start with "run_").

    def self.plugins
      @@plugins ||= (["run_tests"] +
                     public_instance_methods(false).
                     grep(/^run_/).map { |s| s.to_s }).uniq
    end

    def output
      self.class.output
    end

    def puts *a  # :nodoc:
      output.puts(*a)
    end

    def print *a # :nodoc:
      output.print(*a)
    end

    def _run_anything type
      suites = TestCase.send "#{type}_suites"
      return if suites.empty?

      start = Time.now

      puts
      puts "# Running #{type}s:"
      puts

      @test_count, @assertion_count = 0, 0
      sync = output.respond_to? :"sync=" # stupid emacs
      old_sync, output.sync = output.sync, true if sync

      results = _run_suites suites, type

      @test_count      = results.inject(0) { |sum, (tc, _)| sum + tc }
      @assertion_count = results.inject(0) { |sum, (_, ac)| sum + ac }

      output.sync = old_sync if sync

      t = Time.now - start

      puts
      puts
      puts "Finished #{type}s in %.6fs, %.4f tests/s, %.4f assertions/s." %
        [t, test_count / t, assertion_count / t]

      report.each_with_index do |msg, i|
        puts "\n%3d) %s" % [i + 1, msg]
      end

      puts

      status
    end

    def _run_suites suites, type
      suites.map { |suite| _run_suite suite, type }
    end

    def _run_suite suite, type
      header = "#{type}_suite_header"
      puts send(header, suite) if respond_to? header

      filter = options[:filter] || '/./'
      filter = Regexp.new $1 if filter =~ /\/(.*)\//

      assertions = suite.send("#{type}_methods").grep(filter).map { |method|
        inst = suite.new method
        inst._assertions = 0

        print "#{suite}##{method} = " if @verbose

        @start_time = Time.now
        result = inst.run self
        time = Time.now - @start_time

        print "%.2f s = " % time if @verbose
        print result
        puts if @verbose

        inst._assertions
      }

      return assertions.size, assertions.inject(0) { |sum, n| sum + n }
    end

    def location e # :nodoc:
      last_before_assertion = ""
      e.backtrace.reverse_each do |s|
        break if s =~ /in .(assert|refute|flunk|pass|fail|raise|must|wont)/
        last_before_assertion = s
      end
      last_before_assertion.sub(/:in .*$/, '')
    end

    ##
    # Writes status for failed test +meth+ in +klass+ which finished with
    # exception +e+

    def puke klass, meth, e
      e = case e
          when MiniTest::Skip then
            @skips += 1
            return "S" unless @verbose
            "Skipped:\n#{meth}(#{klass}) [#{location e}]:\n#{e.message}\n"
          when MiniTest::Assertion then
            @failures += 1
            "Failure:\n#{meth}(#{klass}) [#{location e}]:\n#{e.message}\n"
          else
            @errors += 1
            bt = MiniTest::filter_backtrace(e.backtrace).join "\n    "
            "Error:\n#{meth}(#{klass}):\n#{e.class}: #{e.message}\n    #{bt}\n"
          end
      @report << e
      e[0, 1]
    end

    def initialize # :nodoc:
      @report = []
      @errors = @failures = @skips = 0
      @verbose = false
    end

    def process_args args = []
      options = {}
      orig_args = args.dup

      OptionParser.new do |opts|
        opts.banner  = 'minitest options:'
        opts.version = MiniTest::Unit::VERSION

        opts.on '-h', '--help', 'Display this help.' do
          puts opts
          exit
        end

        opts.on '-s', '--seed SEED', Integer, "Sets random seed" do |m|
          options[:seed] = m.to_i
        end

        opts.on '-v', '--verbose', "Verbose. Show progress processing files." do
          options[:verbose] = true
        end

        opts.on '-n', '--name PATTERN', "Filter test names on pattern." do |a|
          options[:filter] = a
        end

        opts.parse! args
        orig_args -= args
      end

      unless options[:seed] then
        srand
        options[:seed] = srand % 0xFFFF
        orig_args << "--seed" << options[:seed].to_s
      end

      srand options[:seed]

      self.verbose = options[:verbose]
      @help = orig_args.map { |s| s =~ /[\s|&<>$()]/ ? s.inspect : s }.join " "

      options
    end

    ##
    # Begins the full test run. Delegates to +runner+'s #_run method.

    def run args = []
      self.class.runner._run(args)
    end

    ##
    # Top level driver, controls all output and filtering.

    def _run args = []
      self.options = process_args args

      puts "Run options: #{help}"

      self.class.plugins.each do |plugin|
        send plugin
        break unless report.empty?
      end

      return failures + errors if @test_count > 0 # or return nil...
    rescue Interrupt
      abort 'Interrupted'
    end

    ##
    # Runs test suites matching +filter+.

    def run_tests
      _run_anything :test
    end

    ##
    # Writes status to +io+

    def status io = self.output
      format = "%d tests, %d assertions, %d failures, %d errors, %d skips"
      io.puts format % [test_count, assertion_count, failures, errors, skips]
    end

    ##
    # Subclass TestCase to create your own tests. Typically you'll want a
    # TestCase subclass per implementation class.
    #
    # See MiniTest::Assertions

    class TestCase
      attr_reader :__name__ # :nodoc:

      PASSTHROUGH_EXCEPTIONS = [NoMemoryError, SignalException,
                                Interrupt, SystemExit] # :nodoc:

      SUPPORTS_INFO_SIGNAL = Signal.list['INFO'] # :nodoc:

      ##
      # Runs the tests reporting the status to +runner+

      def run runner
        trap "INFO" do
          time = runner.start_time ? Time.now - runner.start_time : 0
          warn "%s#%s %.2fs" % [self.class, self.__name__, time]
          runner.status $stderr
        end if SUPPORTS_INFO_SIGNAL

        result = ""
        begin
          @passed = nil
          self.setup
          self.run_setup_hooks
          self.__send__ self.__name__
          result = "." unless io?
          @passed = true
        rescue *PASSTHROUGH_EXCEPTIONS
          raise
        rescue Exception => e
          @passed = false
          result = runner.puke self.class, self.__name__, e
        ensure
          begin
            self.run_teardown_hooks
            self.teardown
          rescue *PASSTHROUGH_EXCEPTIONS
            raise
          rescue Exception => e
            result = runner.puke self.class, self.__name__, e
          end
          trap 'INFO', 'DEFAULT' if SUPPORTS_INFO_SIGNAL
        end
        result
      end

      def initialize name # :nodoc:
        @__name__ = name
        @__io__ = nil
        @passed = nil
      end

      def io
        @__io__ = true
        MiniTest::Unit.output
      end

      def io?
        @__io__
      end

      def self.reset # :nodoc:
        @@test_suites = {}
      end

      reset

      ##
      # Call this at the top of your tests when you absolutely
      # positively need to have ordered tests. In doing so, you're
      # admitting that you suck and your tests are weak.

      def self.i_suck_and_my_tests_are_order_dependent!
        class << self
          define_method :test_order do :alpha end
        end
      end

      def self.inherited klass # :nodoc:
        @@test_suites[klass] = true
        klass.reset_setup_teardown_hooks
        super
      end

      def self.test_order # :nodoc:
        :random
      end

      def self.test_suites # :nodoc:
        @@test_suites.keys.sort_by { |ts| ts.name.to_s }
      end

      def self.test_methods # :nodoc:
        methods = public_instance_methods(true).grep(/^test/).map { |m| m.to_s }

        case self.test_order
        when :random then
          max = methods.size
          methods.sort.sort_by { rand max }
        when :alpha, :sorted then
          methods.sort
        else
          raise "Unknown test_order: #{self.test_order.inspect}"
        end
      end

      ##
      # Returns true if the test passed.

      def passed?
        @passed
      end

      ##
      # Runs before every test. Use this to refactor test initialization.

      def setup; end

      ##
      # Runs after every test. Use this to refactor test cleanup.

      def teardown; end

      def self.reset_setup_teardown_hooks # :nodoc:
        @setup_hooks = []
        @teardown_hooks = []
      end

      reset_setup_teardown_hooks

      ##
      # Adds a block of code that will be executed before every TestCase is
      # run. Equivalent to +setup+, but usable multiple times and without
      # re-opening any classes.
      #
      # All of the setup hooks will run in order after the +setup+ method, if
      # one is defined.
      #
      # The argument can be any object that responds to #call or a block.
      # That means that this call,
      #
      #     MiniTest::TestCase.add_setup_hook { puts "foo" }
      #
      # ... is equivalent to:
      #
      #     module MyTestSetup
      #       def call
      #         puts "foo"
      #       end
      #     end
      #
      #     MiniTest::TestCase.add_setup_hook MyTestSetup
      #
      # The blocks passed to +add_setup_hook+ take an optional parameter that
      # will be the TestCase instance that is executing the block.

      def self.add_setup_hook arg=nil, &block
        hook = arg || block
        @setup_hooks << hook
      end

      def self.setup_hooks # :nodoc:
        if superclass.respond_to? :setup_hooks then
          superclass.setup_hooks
        else
          []
        end + @setup_hooks
      end

      def run_setup_hooks # :nodoc:
        self.class.setup_hooks.each do |hook|
          if hook.respond_to?(:arity) && hook.arity == 1
            hook.call(self)
          else
            hook.call
          end
        end
      end

      ##
      # Adds a block of code that will be executed after every TestCase is
      # run. Equivalent to +teardown+, but usable multiple times and without
      # re-opening any classes.
      #
      # All of the teardown hooks will run in reverse order after the
      # +teardown+ method, if one is defined.
      #
      # The argument can be any object that responds to #call or a block.
      # That means that this call,
      #
      #     MiniTest::TestCase.add_teardown_hook { puts "foo" }
      #
      # ... is equivalent to:
      #
      #     module MyTestTeardown
      #       def call
      #         puts "foo"
      #       end
      #     end
      #
      #     MiniTest::TestCase.add_teardown_hook MyTestTeardown
      #
      # The blocks passed to +add_teardown_hook+ take an optional parameter
      # that will be the TestCase instance that is executing the block.

      def self.add_teardown_hook arg=nil, &block
        hook = arg || block
        @teardown_hooks << hook
      end

      def self.teardown_hooks # :nodoc:
        if superclass.respond_to? :teardown_hooks then
          superclass.teardown_hooks
        else
          []
        end + @teardown_hooks
      end

      def run_teardown_hooks # :nodoc:
        self.class.teardown_hooks.reverse.each do |hook|
          if hook.respond_to?(:arity) && hook.arity == 1
            hook.call(self)
          else
            hook.call
          end
        end
      end

      include MiniTest::Assertions
    end # class TestCase
  end # class Unit
end # module MiniTest

if $DEBUG then
  module Test                # :nodoc:
    module Unit              # :nodoc:
      class TestCase         # :nodoc:
        def self.inherited x # :nodoc:
          # this helps me ferret out porting issues
          raise "Using minitest and test/unit in the same process: #{x}"
        end
      end
    end
  end
end