summaryrefslogtreecommitdiff
path: root/test/ruby/test_object.rb
blob: 2116c6a21623078c185a40a83292e29c7968c732 (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
require 'test/unit'
require_relative 'envutil'

class TestObject < Test::Unit::TestCase
  def setup
    @verbose = $VERBOSE
    $VERBOSE = nil
  end

  def teardown
    $VERBOSE = @verbose
  end

  def test_dup
    assert_raise(TypeError) { 1.dup }
    assert_raise(TypeError) { true.dup }
    assert_raise(TypeError) { nil.dup }

    assert_raise(TypeError) do
      Object.new.instance_eval { initialize_copy(1) }
    end
  end

  def test_instance_of
    assert_raise(TypeError) { 1.instance_of?(1) }
  end

  def test_kind_of
    assert_raise(TypeError) { 1.kind_of?(1) }
  end

  def test_taint_frozen_obj
    o = Object.new
    o.freeze
    assert_raise(RuntimeError) { o.taint }

    o = Object.new
    o.taint
    o.freeze
    assert_raise(RuntimeError) { o.untaint }
  end

  def test_freeze_under_safe_4
    o = Object.new
    assert_raise(SecurityError) do
      Thread.new do
        $SAFE = 4
        o.freeze
      end.join
    end
  end

  def test_freeze_immediate
    assert_equal(false, 1.frozen?)
    1.freeze
    assert_equal(true, 1.frozen?)
    assert_equal(false, 2.frozen?)
  end

  def test_nil_to_f
    assert_equal(0.0, nil.to_f)
  end

  def test_not
    assert_equal(false, Object.new.send(:!))
    assert_equal(true, nil.send(:!))
  end

  def test_true_and
    assert_equal(true, true & true)
    assert_equal(true, true & 1)
    assert_equal(false, true & false)
    assert_equal(false, true & nil)
  end

  def test_true_or
    assert_equal(true, true | true)
    assert_equal(true, true | 1)
    assert_equal(true, true | false)
    assert_equal(true, true | nil)
  end

  def test_true_xor
    assert_equal(false, true ^ true)
    assert_equal(false, true ^ 1)
    assert_equal(true, true ^ false)
    assert_equal(true, true ^ nil)
  end

  def test_false_and
    assert_equal(false, false & true)
    assert_equal(false, false & 1)
    assert_equal(false, false & false)
    assert_equal(false, false & nil)
  end

  def test_false_or
    assert_equal(true, false | true)
    assert_equal(true, false | 1)
    assert_equal(false, false | false)
    assert_equal(false, false | nil)
  end

  def test_false_xor
    assert_equal(true, false ^ true)
    assert_equal(true, false ^ 1)
    assert_equal(false, false ^ false)
    assert_equal(false, false ^ nil)
  end

  def test_methods
    o = Object.new
    a1 = o.methods
    a2 = o.methods(false)

    def o.foo; end

    assert_equal([:foo], o.methods(true) - a1)
    assert_equal([:foo], o.methods(false) - a2)
  end

  def test_methods2
    c0 = Class.new
    c1 = Class.new(c0)
    c1.module_eval do
      public   ; def foo; end
      protected; def bar; end
      private  ; def baz; end
    end
    c2 = Class.new(c1)
    c2.module_eval do
      public   ; def foo2; end
      protected; def bar2; end
      private  ; def baz2; end
    end

    o0 = c0.new
    o2 = c2.new

    assert_equal([:baz, :baz2], (o2.private_methods - o0.private_methods).sort)
    assert_equal([:baz2], (o2.private_methods(false) - o0.private_methods(false)).sort)

    assert_equal([:bar, :bar2], (o2.protected_methods - o0.protected_methods).sort)
    assert_equal([:bar2], (o2.protected_methods(false) - o0.protected_methods(false)).sort)

    assert_equal([:foo, :foo2], (o2.public_methods - o0.public_methods).sort)
    assert_equal([:foo2], (o2.public_methods(false) - o0.public_methods(false)).sort)
  end

  def test_instance_variable_get
    o = Object.new
    o.instance_eval { @foo = :foo }
    assert_equal(:foo, o.instance_variable_get(:@foo))
    assert_equal(nil, o.instance_variable_get(:@bar))
    assert_raise(NameError) { o.instance_variable_get(:foo) }
  end

  def test_instance_variable_set
    o = Object.new
    o.instance_variable_set(:@foo, :foo)
    assert_equal(:foo, o.instance_eval { @foo })
    assert_raise(NameError) { o.instance_variable_set(:foo, 1) }
  end

  def test_instance_variable_defined
    o = Object.new
    o.instance_eval { @foo = :foo }
    assert_equal(true, o.instance_variable_defined?(:@foo))
    assert_equal(false, o.instance_variable_defined?(:@bar))
    assert_raise(NameError) { o.instance_variable_defined?(:foo) }
  end

  def test_remove_instance_variable
    o = Object.new
    o.instance_eval { @foo = :foo }
    o.instance_eval { remove_instance_variable(:@foo) }
    assert_equal(false, o.instance_variable_defined?(:@foo))
  end

  def test_convert_type
    o = Object.new
    def o.to_s; 1; end
    assert_raise(TypeError) { String(o) }
  end

  def test_check_convert_type
    o = Object.new
    def o.to_a; 1; end
    assert_raise(TypeError) { Array(o) }
  end

  def test_to_integer
    o = Object.new
    def o.to_i; nil; end
    assert_raise(TypeError) { Integer(o) }
  end

  class MyInteger
    def initialize(n); @num = n; end
    def to_int; @num; end
    def <=>(n); @num <=> n.to_int; end
    def <=(n); @num <= n.to_int; end
    def +(n); MyInteger.new(@num + n.to_int); end
  end

  def test_check_to_integer
    o1 = MyInteger.new(1)
    o9 = MyInteger.new(9)
    n = 0
    Range.new(o1, o9).step(2) {|x| n += x.to_int }
    assert_equal(1+3+5+7+9, n)
  end

  def test_add_method_under_safe4
    o = Object.new
    assert_raise(SecurityError) do
      Thread.new do
        $SAFE = 4
        def o.foo
        end
      end.join
    end
  end

  def test_redefine_method_under_verbose
    assert_in_out_err([], <<-INPUT, %w(2), /warning: method redefined; discarding old foo$/)
      $VERBOSE = true
      o = Object.new
      def o.foo; 1; end
      def o.foo; 2; end
      p o.foo
    INPUT
  end

  def test_redefine_method_which_may_case_serious_problem
    assert_in_out_err([], <<-INPUT, [], /warning: redefining `object_id' may cause serious problem$/)
      $VERBOSE = false
      def (Object.new).object_id; end
    INPUT

    assert_in_out_err([], <<-INPUT, [], /warning: redefining `__send__' may cause serious problem$/)
      $VERBOSE = false
      def (Object.new).__send__; end
    INPUT
  end

  def test_remove_method
    assert_raise(SecurityError) do
      Thread.new do
        $SAFE = 4
        Object.instance_eval { remove_method(:foo) }
      end.join
    end

    assert_raise(SecurityError) do
      Thread.new do
        $SAFE = 4
        Class.instance_eval { remove_method(:foo) }
      end.join
    end

    c = Class.new
    c.freeze
    assert_raise(RuntimeError) do
      c.instance_eval { remove_method(:foo) }
    end

    %w(object_id __send__ initialize).each do |m|
      assert_in_out_err([], <<-INPUT, %w(:ok), /warning: removing `#{m}' may cause serious problem$/)
        $VERBOSE = false
        begin
          Class.new.instance_eval { remove_method(:#{m}) }
        rescue NameError
          p :ok
        end
      INPUT
    end
  end

  def test_method_missing
    assert_raise(ArgumentError) do
      1.instance_eval { method_missing }
    end

    c = Class.new
    c.class_eval do
      protected
      def foo; end
    end
    assert_raise(NoMethodError) do
      c.new.foo
    end

    assert_raise(NoMethodError) do
      1.instance_eval { method_missing(:method_missing) }
    end
  end

  def test_send_with_no_arguments
    assert_raise(ArgumentError) { 1.send }
  end

  def test_specific_eval_with_wrong_arguments
    assert_raise(ArgumentError) do
      1.instance_eval("foo") { foo }
    end

    assert_raise(ArgumentError) do
      1.instance_eval
    end

    assert_raise(ArgumentError) do
      1.instance_eval("", 1, 1, 1)
    end
  end

  def test_instance_exec
    x = 1.instance_exec(42) {|a| self + a }
    assert_equal(43, x)

    x = "foo".instance_exec("bar") {|a| self + a }
    assert_equal("foobar", x)
  end

  def test_extend
    assert_raise(ArgumentError) do
      1.extend
    end
  end

  def test_untrusted
    obj = lambda {
      $SAFE = 4
      x = Object.new
      x.instance_eval { @foo = 1 }
      x
    }.call
    assert_equal(true, obj.untrusted?)
    assert_equal(true, obj.tainted?)

    x = Object.new
    assert_equal(false, x.untrusted?)
    assert_raise(SecurityError) do
      lambda {
        $SAFE = 4
        x.instance_eval { @foo = 1 }
      }.call
    end

    x = Object.new
    x.taint
    assert_raise(SecurityError) do
      lambda {
        $SAFE = 4
        x.instance_eval { @foo = 1 }
      }.call
    end

    x.untrust
    assert_equal(true, x.untrusted?)
    assert_nothing_raised do
      lambda {
        $SAFE = 4
        x.instance_eval { @foo = 1 }
      }.call
    end

    x.trust
    assert_equal(false, x.untrusted?)
    assert_raise(SecurityError) do
      lambda {
        $SAFE = 4
        x.instance_eval { @foo = 1 }
      }.call
    end

    a = Object.new
    a.untrust
    assert_equal(true, a.untrusted?)
    b = a.dup
    assert_equal(true, b.untrusted?)
    c = a.clone
    assert_equal(true, c.untrusted?)

    a = Object.new
    b = lambda {
      $SAFE = 4
      a.dup
    }.call
    assert_equal(true, b.untrusted?)

    a = Object.new
    b = lambda {
      $SAFE = 4
      a.clone
    }.call
    assert_equal(true, b.untrusted?)
  end

  def test_to_s
    x = Object.new
    x.taint
    x.untrust
    s = x.to_s
    assert_equal(true, s.untrusted?)
    assert_equal(true, s.tainted?)
  end
end