summaryrefslogtreecommitdiff
path: root/test/ruby/test_range.rb
blob: a2935955dea1cf99111029d885a50353caf4d20a (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
require 'test/unit'
require 'delegate'
require 'timeout'

class TestRange < Test::Unit::TestCase
  def test_range_string
    # XXX: Is this really the test of Range?
    assert_equal([], ("a" ... "a").to_a)
    assert_equal(["a"], ("a" .. "a").to_a)
    assert_equal(["a"], ("a" ... "b").to_a)
    assert_equal(["a", "b"], ("a" .. "b").to_a)
  end

  def test_range_numeric_string
    assert_equal(["6", "7", "8"], ("6".."8").to_a, "[ruby-talk:343187]")
    assert_equal(["6", "7"], ("6"..."8").to_a)
    assert_equal(["9", "10"], ("9".."10").to_a)
    assert_equal(["09", "10"], ("09".."10").to_a, "[ruby-dev:39361]")
    assert_equal(["9", "10"], (SimpleDelegator.new("9").."10").to_a)
    assert_equal(["9", "10"], ("9"..SimpleDelegator.new("10")).to_a)
  end

  def test_range_symbol
    assert_equal([:a, :b], (:a .. :b).to_a)
  end

  def test_evaluation_order
    arr = [1,2]
    r = (arr.shift)..(arr.shift)
    assert_equal(1..2, r, "[ruby-dev:26383]")
  end

  class DuckRange
    def initialize(b,e,excl=false)
      @begin = b
      @end = e
      @excl = excl
    end
    attr_reader :begin, :end

    def exclude_end?
      @excl
    end
  end

  def test_duckrange
    assert_equal("bc", "abcd"[DuckRange.new(1,2)])
  end

  def test_min
    assert_equal(1, (1..2).min)
    assert_equal(nil, (2..1).min)
    assert_equal(1, (1...2).min)

    assert_equal(1.0, (1.0..2.0).min)
    assert_equal(nil, (2.0..1.0).min)
    assert_equal(1, (1.0...2.0).min)

    assert_equal(0, (0..0).min)
    assert_equal(nil, (0...0).min)
  end

  def test_max
    assert_equal(2, (1..2).max)
    assert_equal(nil, (2..1).max)
    assert_equal(1, (1...2).max)

    assert_equal(2.0, (1.0..2.0).max)
    assert_equal(nil, (2.0..1.0).max)
    assert_raise(TypeError) { (1.0...2.0).max }

    assert_equal(-0x80000002, ((-0x80000002)...(-0x80000001)).max)

    assert_equal(0, (0..0).max)
    assert_equal(nil, (0...0).max)
  end

  def test_initialize_twice
    r = eval("1..2")
    assert_raise(NameError) { r.instance_eval { initialize 3, 4 } }
  end

  def test_uninitialized_range
    r = Range.allocate
    s = Marshal.dump(r)
    r = Marshal.load(s)
    assert_nothing_raised { r.instance_eval { initialize 5, 6} }
  end

  def test_bad_value
    assert_raise(ArgumentError) { (1 .. :a) }
  end

  def test_exclude_end
    assert(!((0..1).exclude_end?))
    assert((0...1).exclude_end?)
  end

  def test_eq
    r = (0..1)
    assert(r == r)
    assert(r == (0..1))
    assert(r != 0)
    assert(r != (1..2))
    assert(r != (0..2))
    assert(r != (0...1))
    subclass = Class.new(Range)
    assert(r == subclass.new(0,1))
  end

  def test_eql
    r = (0..1)
    assert(r.eql?(r))
    assert(r.eql?(0..1))
    assert(!r.eql?(0))
    assert(!r.eql?(1..2))
    assert(!r.eql?(0..2))
    assert(!r.eql?(0...1))
    subclass = Class.new(Range)
    assert(r.eql?(subclass.new(0,1)))
  end

  def test_hash
    assert((0..1).hash.is_a?(Fixnum))
  end

  def test_step
    a = []
    (0..10).step {|x| a << x }
    assert_equal([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10], a)

    a = []
    (0..10).step(2) {|x| a << x }
    assert_equal([0, 2, 4, 6, 8, 10], a)

    assert_raise(ArgumentError) { (0..10).step(-1) { } }
    assert_raise(ArgumentError) { (0..10).step(0) { } }

    a = []
    ("a" .. "z").step(2) {|x| a << x }
    assert_equal(%w(a c e g i k m o q s u w y), a)

    a = []
    ("a" .. "z").step(2**32) {|x| a << x }
    assert_equal(["a"], a)

    a = []
    (2**32-1 .. 2**32+1).step(2) {|x| a << x }
    assert_equal([4294967295, 4294967297], a)
    zero = (2**32).coerce(0).first
    assert_raise(ArgumentError) { (2**32-1 .. 2**32+1).step(zero) { } }

    o1 = Object.new
    o2 = Object.new
    def o1.<=>(x); -1; end
    def o2.<=>(x); 0; end
    assert_raise(TypeError) { (o1..o2).step(1) { } }

    class << o1; self; end.class_eval do
      define_method(:succ) { o2 }
    end
    a = []
    (o1..o2).step(1) {|x| a << x }
    assert_equal([o1, o2], a)

    a = []
    (o1...o2).step(1) {|x| a << x }
    assert_equal([o1], a)

    assert_nothing_raised("[ruby-dev:34557]") { (0..2).step(0.5) {|x| } }

    a = []
    (0..2).step(0.5) {|x| a << x }
    assert_equal([0, 0.5, 1.0, 1.5, 2.0], a)

    a = []
    (0x40000000..0x40000002).step(0.5) {|x| a << x }
    assert_equal([1073741824, 1073741824.5, 1073741825.0, 1073741825.5, 1073741826], a)

    o = Object.new
    def o.to_int() 1 end
    assert_nothing_raised("[ruby-dev:34558]") { (0..2).step(o) {|x| } }
  end

  def test_each
    a = []
    (0..10).each {|x| a << x }
    assert_equal([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10], a)

    o1 = Object.new
    o2 = Object.new
    def o1.setcmp(v) @cmpresult = v end
    o1.setcmp(-1)
    def o1.<=>(x); @cmpresult; end
    def o2.setcmp(v) @cmpresult = v end
    o2.setcmp(0)
    def o2.<=>(x); @cmpresult; end
    class << o1; self; end.class_eval do
      define_method(:succ) { o2 }
    end

    r1 = (o1..o2)
    r2 = (o1...o2)

    a = []
    r1.each {|x| a << x }
    assert_equal([o1, o2], a)

    a = []
    r2.each {|x| a << x }
    assert_equal([o1], a)

    o2.setcmp(1)

    a = []
    r1.each {|x| a << x }
    assert_equal([o1], a)

    o2.setcmp(nil)

    a = []
    r1.each {|x| a << x }
    assert_equal([o1], a)

    o1.setcmp(nil)

    a = []
    r2.each {|x| a << x }
    assert_equal([], a)
  end

  def test_begin_end
    assert_equal(0, (0..1).begin)
    assert_equal(1, (0..1).end)
  end

  def test_first_last
    assert_equal([0, 1, 2], (0..10).first(3))
    assert_equal([8, 9, 10], (0..10).last(3))
  end

  def test_to_s
    assert_equal("0..1", (0..1).to_s)
    assert_equal("0...1", (0...1).to_s)
  end

  def test_inspect
    assert_equal("0..1", (0..1).inspect)
    assert_equal("0...1", (0...1).inspect)
  end

  def test_eqq
    assert((0..10) === 5)
    assert(!((0..10) === 11))
  end

  def test_include
    assert(("a".."z").include?("c"))
    assert(!(("a".."z").include?("5")))
    assert(("a"..."z").include?("y"))
    assert(!(("a"..."z").include?("z")))
    assert(!(("a".."z").include?("cc")))
    assert((0...10).include?(5))
  end

  def test_cover
    assert(("a".."z").cover?("c"))
    assert(!(("a".."z").cover?("5")))
    assert(("a"..."z").cover?("y"))
    assert(!(("a"..."z").cover?("z")))
    assert(("a".."z").cover?("cc"))
  end

  def test_beg_len
    o = Object.new
    assert_raise(TypeError) { [][o] }
    class << o; attr_accessor :begin end
    o.begin = -10
    assert_raise(TypeError) { [][o] }
    class << o; attr_accessor :end end
    o.end = 0
    assert_raise(NoMethodError) { [][o] }
    def o.exclude_end=(v) @exclude_end = v end
    def o.exclude_end?() @exclude_end end
    o.exclude_end = false
    assert_nil([0][o])
    assert_raise(RangeError) { [0][o] = 1 }
    o.begin = 10
    o.end = 10
    assert_nil([0][o])
    o.begin = 0
    assert_equal([0], [0][o])
    o.begin = 2
    o.end = 0
    assert_equal([], [0, 1, 2][o])
  end

  class CyclicRange < Range
    def <=>(other); true; end
  end
  def test_cyclic_range_inspect
    o = CyclicRange.allocate
    o.instance_eval { initialize(o, 1) }
    assert_equal("(... .. ...)..1", o.inspect)
  end

  def test_comparison_when_recursive
    x = CyclicRange.allocate; x.send(:initialize, x, 1)
    y = CyclicRange.allocate; y.send(:initialize, y, 1)
    Timeout.timeout(1) {
      assert x == y
      assert x.eql? y
    }

    z = CyclicRange.allocate; z.send(:initialize, z, :another)
    Timeout.timeout(1) {
      assert x != z
      assert !x.eql?(z)
    }

    x = CyclicRange.allocate
    y = CyclicRange.allocate
    x.send(:initialize, y, 1)
    y.send(:initialize, x, 1)
    Timeout.timeout(1) {
      assert x == y
      assert x.eql?(y)
    }

    x = CyclicRange.allocate
    z = CyclicRange.allocate
    x.send(:initialize, z, 1)
    z.send(:initialize, x, :other)
    Timeout.timeout(1) {
      assert x != z
      assert !x.eql?(z)
    }
  end
end