summaryrefslogtreecommitdiff
path: root/test/ruby/test_eval.rb
blob: 6982429b5104ebf010af6fa71bcf0b17512847a6 (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
# frozen_string_literal: false
require 'test/unit'

class TestEval < Test::Unit::TestCase

  @ivar = 12
  @@cvar = 13
  $gvar__eval = 14
  Const = 15

  def ruby(*args)
    args = ['-e', '$>.write($<.read)'] if args.empty?
    ruby = EnvUtil.rubybin
    f = IO.popen([ruby] + args, 'r+')
    yield(f)
  ensure
    f.close unless !f || f.closed?
  end

  def test_eval_basic
    assert_equal nil,   eval("nil")
    assert_equal true,  eval("true")
    assert_equal false, eval("false")
    assert_equal self,  eval("self")
    assert_equal 1,     eval("1")
    assert_equal :sym,  eval(":sym")

    assert_equal 11,    eval("11")
    @ivar = 12
    assert_equal 12,    eval("@ivar")
    assert_equal 13,    eval("@@cvar")
    assert_equal 14,    eval("$gvar__eval")
    assert_equal 15,    eval("Const")

    assert_equal 16,    eval("7 + 9")
    assert_equal 17,    eval("17.to_i")
    assert_equal "18",  eval(%q("18"))
    assert_equal "19",  eval(%q("1#{9}"))

    1.times {
      assert_equal 12,  eval("@ivar")
      assert_equal 13,  eval("@@cvar")
      assert_equal 14,  eval("$gvar__eval")
      assert_equal 15,  eval("Const")
    }
  end

  def test_eval_binding_basic
    assert_equal nil,   eval("nil", binding())
    assert_equal true,  eval("true", binding())
    assert_equal false, eval("false", binding())
    assert_equal self,  eval("self", binding())
    assert_equal 1,     eval("1", binding())
    assert_equal :sym,  eval(":sym", binding())

    assert_equal 11,    eval("11", binding())
    @ivar = 12
    assert_equal 12,    eval("@ivar", binding())
    assert_equal 13,    eval("@@cvar", binding())
    assert_equal 14,    eval("$gvar__eval", binding())
    assert_equal 15,    eval("Const", binding())

    assert_equal 16,    eval("7 + 9", binding())
    assert_equal 17,    eval("17.to_i", binding())
    assert_equal "18",  eval(%q("18"), binding())
    assert_equal "19",  eval(%q("1#{9}"), binding())

    1.times {
      assert_equal 12,  eval("@ivar")
      assert_equal 13,  eval("@@cvar")
      assert_equal 14,  eval("$gvar__eval")
      assert_equal 15,  eval("Const")
    }
  end

  def test_module_eval_string_basic
    c = self.class
    assert_equal nil,   c.module_eval("nil")
    assert_equal true,  c.module_eval("true")
    assert_equal false, c.module_eval("false")
    assert_equal c,     c.module_eval("self")
    assert_equal :sym,  c.module_eval(":sym")
    assert_equal 11,    c.module_eval("11")
    @ivar = 12
    assert_equal 12,    c.module_eval("@ivar")
    assert_equal 13,    c.module_eval("@@cvar")
    assert_equal 14,    c.module_eval("$gvar__eval")
    assert_equal 15,    c.module_eval("Const")
    assert_equal 16,    c.module_eval("7 + 9")
    assert_equal 17,    c.module_eval("17.to_i")
    assert_equal "18",  c.module_eval(%q("18"))
    assert_equal "19",  c.module_eval(%q("1#{9}"))

    @ivar = 12
    1.times {
      assert_equal 12,  c.module_eval("@ivar")
      assert_equal 13,  c.module_eval("@@cvar")
      assert_equal 14,  c.module_eval("$gvar__eval")
      assert_equal 15,  c.module_eval("Const")
    }
  end

  def test_module_eval_block_basic
    c = self.class
    assert_equal nil,   c.module_eval { nil }
    assert_equal true,  c.module_eval { true }
    assert_equal false, c.module_eval { false }
    assert_equal c,     c.module_eval { self }
    assert_equal :sym,  c.module_eval { :sym }
    assert_equal 11,    c.module_eval { 11 }
    @ivar = 12
    assert_equal 12,    c.module_eval { @ivar }
    assert_equal 13,    c.module_eval { @@cvar }
    assert_equal 14,    c.module_eval { $gvar__eval }
    assert_equal 15,    c.module_eval { Const }
    assert_equal 16,    c.module_eval { 7 + 9 }
    assert_equal 17,    c.module_eval { "17".to_i }
    assert_equal "18",  c.module_eval { "18" }
    assert_equal "19",  c.module_eval { "1#{9}" }

    @ivar = 12
    1.times {
      assert_equal 12,  c.module_eval { @ivar }
      assert_equal 13,  c.module_eval { @@cvar }
      assert_equal 14,  c.module_eval { $gvar__eval }
      assert_equal 15,  c.module_eval { Const }
    }
  end

  def test_module_eval_block_symbol
    assert_equal "Math", Math.module_eval(&:to_s)
  end

  def forall_TYPE
    objects = [Object.new, [], nil, true, false] # TODO: check
    objects.each do |obj|
      obj.instance_variable_set :@ivar, 12 unless obj.frozen?
      yield obj
    end
  end

  def test_instance_eval_string_basic
    forall_TYPE do |o|
      assert_equal nil,   o.instance_eval("nil")
      assert_equal true,  o.instance_eval("true")
      assert_equal false, o.instance_eval("false")
      assert_equal o,     o.instance_eval("self")
      assert_equal 1,     o.instance_eval("1")
      assert_equal :sym,  o.instance_eval(":sym")

      assert_equal 11,    o.instance_eval("11")
      assert_equal 12,    o.instance_eval("@ivar") unless o.frozen?
      assert_equal 13,    o.instance_eval("@@cvar")
      assert_equal 14,    o.instance_eval("$gvar__eval")
      assert_equal 15,    o.instance_eval("Const")
      assert_equal 16,    o.instance_eval("7 + 9")
      assert_equal 17,    o.instance_eval("17.to_i")
      assert_equal "18",  o.instance_eval(%q("18"))
      assert_equal "19",  o.instance_eval(%q("1#{9}"))

      1.times {
        assert_equal 12,  o.instance_eval("@ivar") unless o.frozen?
        assert_equal 13,  o.instance_eval("@@cvar")
        assert_equal 14,  o.instance_eval("$gvar__eval")
        assert_equal 15,  o.instance_eval("Const")
      }
    end
  end

  def test_instance_eval_block_basic
    forall_TYPE do |o|
      assert_equal nil,   o.instance_eval { nil }
      assert_equal true,  o.instance_eval { true }
      assert_equal false, o.instance_eval { false }
      assert_equal o,     o.instance_eval { self }
      assert_equal 1,     o.instance_eval { 1 }
      assert_equal :sym,  o.instance_eval { :sym }

      assert_equal 11,    o.instance_eval { 11 }
      assert_equal 12,    o.instance_eval { @ivar } unless o.frozen?
      assert_equal 13,    o.instance_eval { @@cvar }
      assert_equal 14,    o.instance_eval { $gvar__eval }
      assert_equal 15,    o.instance_eval { Const }
      assert_equal 16,    o.instance_eval { 7 + 9 }
      assert_equal 17,    o.instance_eval { 17.to_i }
      assert_equal "18",  o.instance_eval { "18" }
      assert_equal "19",  o.instance_eval { "1#{9}" }

      1.times {
        assert_equal 12,  o.instance_eval { @ivar } unless o.frozen?
        assert_equal 13,  o.instance_eval { @@cvar }
        assert_equal 14,  o.instance_eval { $gvar__eval }
        assert_equal 15,  o.instance_eval { Const }
      }
    end
  end

  def test_instance_eval_block_self
    # instance_eval(&block)'s self must not be sticky (jruby/jruby#2060)
    pr = proc { self }
    assert_equal self, pr.call
    o = Object.new
    assert_equal o, o.instance_eval(&pr)
    assert_equal self, pr.call
  end

  def test_instance_eval_block_symbol
    forall_TYPE do |o|
      assert_equal o.to_s, o.instance_eval(&:to_s)
    end
  end

  def test_instance_eval_cvar
    [Object.new, [], 7, :sym, true, false, nil].each do |obj|
      assert_equal(13, obj.instance_eval("@@cvar"))
      assert_equal(13, obj.instance_eval{@@cvar})
      # assert_raise(NameError){obj.instance_eval("@@cvar")}
      # assert_raise(NameError){obj.instance_eval{@@cvar}}
    end
  end

  def test_instance_eval_method
    bug2788 = '[ruby-core:28324]'
    [Object.new, [], nil, true, false].each do |o|
      assert_nothing_raised(TypeError, "#{bug2788} (#{o.inspect})") do
        o.instance_eval {
          def defd_using_instance_eval() :ok end
        }
      end
      assert_equal(:ok, o.defd_using_instance_eval)
      class << o
        remove_method :defd_using_instance_eval
      end
    end
  end

  def test_instance_eval_on_argf_singleton_class
    bug8188 = '[ruby-core:53839] [Bug #8188]'
    assert_warning('', bug8188) do
      ARGF.singleton_class.instance_eval{}
    end
  end

  class Foo
    Bar = 2
  end

  def test_instance_eval_const
    bar = nil
    assert_nothing_raised(NameError) do
      bar = Foo.new.instance_eval("Bar")
    end
    assert_equal(2, bar)
  end

  #
  # From ruby/test/ruby/test_eval.rb
  #

  def make_test_binding
    local1 = "local1"
    lambda {
      local2 = "local2"
      return binding
    }.call
  end

  def test_eval_orig
    assert_nil(eval(""))
    bad=false
    eval 'while false; bad = true; print "foo\n" end'
    assert(!bad)

    assert(eval('TRUE'))
    assert(eval('true'))
    assert(!eval('NIL'))
    assert(!eval('nil'))
    assert(!eval('FALSE'))
    assert(!eval('false'))

    $foo = 'assert(true)'
    begin
      eval $foo
    rescue
      assert(false)
    end

    assert_equal('assert(true)', eval("$foo"))
    assert_equal(true, eval("true"))
    i = 5
    assert(eval("i == 5"))
    assert_equal(5, eval("i"))
    assert(eval("defined? i"))

    x = make_test_binding
    assert_equal("local1", eval("local1", x)) # normal local var
    assert_equal("local2", eval("local2", x)) # nested local var
    bad = true
    begin
      p eval("local1")
    rescue NameError		# must raise error
      bad = false
    end
    assert(!bad)

    # !! use class_eval to avoid nested definition
    x = self.class.class_eval %q(
      module EvTest
	EVTEST1 = 25
	evtest2 = 125
	binding
      end
    )
    assert_equal(25, eval("EVTEST1", x))	# constant in module
    assert_equal(125, eval("evtest2", x))	# local var in module
    bad = true
    begin
      eval("EVTEST1")
    rescue NameError		# must raise error
      bad = false
    end
    assert(!bad)

    if false
      # Ruby 2.0 doesn't see Proc as Binding
      x = proc{}
      eval "i4 = 1", x
      assert_equal(1, eval("i4", x))
      x = proc{proc{}}.call
      eval "i4 = 22", x
      assert_equal(22, eval("i4", x))
      t = []
      x = proc{proc{}}.call
      eval "(0..9).each{|i5| t[i5] = proc{i5*2}}", x
      assert_equal(8, t[4].call)
    end

    x = binding
    eval "i = 1", x
    assert_equal(1, eval("i", x))
    x = proc{binding}.call
    eval "i = 22", x
    assert_equal(22, eval("i", x))
    t = []
    x = proc{binding}.call
    eval "(0..9).each{|i5| t[i5] = proc{i5*2}}", x
    assert_equal(8, t[4].call)
    x = proc{binding}.call
    eval "for i6 in 1..1; j6=i6; end", x
    assert(eval("defined? i6", x))
    assert(eval("defined? j6", x))

    proc {
      p = binding
      eval "foo11 = 1", p
      foo22 = 5
      proc{foo11=22}.call
      proc{foo22=55}.call
      # assert_equal(eval("foo11"), eval("foo11", p))
      # assert_equal(1, eval("foo11"))
      assert_equal(eval("foo22"), eval("foo22", p))
      assert_equal(55, eval("foo22"))
    }.call

    if false
      # Ruby 2.0 doesn't see Proc as Binding
      p1 = proc{i7 = 0; proc{i7}}.call
      assert_equal(0, p1.call)
      eval "i7=5", p1
      assert_equal(5, p1.call)
      assert(!defined?(i7))
    end

    if false
      # Ruby 2.0 doesn't see Proc as Binding
      p1 = proc{i7 = 0; proc{i7}}.call
      i7 = nil
      assert_equal(0, p1.call)
      eval "i7=1", p1
      assert_equal(1, p1.call)
      eval "i7=5", p1
      assert_equal(5, p1.call)
      assert_nil(i7)
    end
  end

  def test_nil_instance_eval_cvar
    def nil.test_binding
      binding
    end
    bb = eval("nil.instance_eval \"binding\"", nil.test_binding)
    assert_raise(NameError, "[ruby-dev:24103]") { eval("@@a", bb) }
    class << nil
      remove_method :test_binding
    end
  end

  def test_fixnum_instance_eval_cvar
    assert_raise(NameError, "[ruby-dev:24213]") { 1.instance_eval "@@a" }
  end

  def test_cvar_scope_with_instance_eval
    # TODO: check
    Fixnum.class_eval "@@test_cvar_scope_with_instance_eval = 1" # depends on [ruby-dev:24229]
    @@test_cvar_scope_with_instance_eval = 4
    assert_equal(4, 1.instance_eval("@@test_cvar_scope_with_instance_eval"), "[ruby-dev:24223]")
    Fixnum.__send__(:remove_class_variable, :@@test_cvar_scope_with_instance_eval)
  end

  def test_eval_and_define_method
    assert_nothing_raised("[ruby-dev:24228]") {
      def temporally_method_for_test_eval_and_define_method(&block)
        lambda {
          class << Object.new; self end.send(:define_method, :zzz, &block)
        }
      end
      v = eval("temporally_method_for_test_eval_and_define_method {}")
      {}[0] = {}
      v.call
    }
  end

  def test_define_method_block
    cc = Class.new do
      define_method(:foo) {|&block|
        block.call if block
      }
    end

    c = cc.new
    x = "ng"
    c.foo() {x = "ok"}
    assert_equal("ok", x)
  end

  def test_define_method_toplevel
    feature6609 = '[ruby-core:45715]'
    main = eval("self", TOPLEVEL_BINDING)
    assert_nothing_raised(NoMethodError, feature6609) do
      main.instance_eval do
        define_method("feature6609_block") {feature6609}
      end
    end
    assert_equal(feature6609, feature6609_block)

    assert_nothing_raised(NoMethodError, feature6609) do
      main.instance_eval do
        define_method("feature6609_method", Object.instance_method(:feature6609_block))
      end
    end
    assert_equal(feature6609, feature6609_method)
  end

  def test_eval_using_integer_as_binding
    assert_raise(TypeError) { eval("", 1) }
  end

  def test_eval_raise
    assert_raise(RuntimeError) { eval("raise ''") }
  end

  def test_eval_with_toplevel_binding # [ruby-dev:37142]
    ruby("-e", "x = 0; eval('p x', TOPLEVEL_BINDING)") do |f|
      f.close_write
      assert_equal("0", f.read.chomp)
    end
  end

  def test_eval_ascii_incompatible
    assert_raise(ArgumentError) {eval("__ENCODING__".encode("utf-16be"))}
    assert_raise(ArgumentError) {eval("__ENCODING__".encode("utf-16le"))}
    assert_raise(ArgumentError) {eval("__ENCODING__".encode("utf-32be"))}
    assert_raise(ArgumentError) {eval("__ENCODING__".encode("utf-32le"))}
  end

  def test_instance_eval_method_proc
    bug3860 = Class.new do
      def initialize(a);
        @a=a
      end
      def get(*args)
        @a
      end
    end
    foo = bug3860.new 1
    foo_pr = foo.method(:get).to_proc
    result = foo.instance_eval(&foo_pr)
    assert_equal(1, result, 'Bug #3786, Bug #3860, [ruby-core:32501]')
  end

  def test_file_encoding
    fname = "\u{3042}".encode("euc-jp")
    assert_equal(fname, eval("__FILE__", nil, fname, 1))
  end

  def test_eval_location_fstring
    o = Object.new
    o.instance_eval "def foo() end", "generated code"
    o.instance_eval "def bar() end", "generated code"

    a, b = o.method(:foo).source_location[0],
           o.method(:bar).source_location[0]

    assert_same a, b
  end

  def test_gced_binding_block
    assert_normal_exit %q{
      def m
        binding
      end
      GC.stress = true
      b = nil
      tap do
        b = m {}
      end
      0.times.to_a
      b.eval('yield')
    }, '[Bug #10368]'
  end
end