summaryrefslogtreecommitdiff
path: root/test/ostruct/test_ostruct.rb
blob: afe6affdc06eac5f4d53417e69dac47c4f6e643b (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
# frozen_string_literal: true
require 'test/unit'
require 'ostruct'

class TC_OpenStruct < Test::Unit::TestCase
  def test_initialize
    h = {name: "John Smith", age: 70, pension: 300}
    assert_equal h, OpenStruct.new(h).to_h
    assert_equal h, OpenStruct.new(OpenStruct.new(h)).to_h
    assert_equal h, OpenStruct.new(Struct.new(*h.keys).new(*h.values)).to_h
  end

  def test_respond_to
    o = OpenStruct.new
    o.a = 1
    assert_respond_to(o, :a)
    assert_respond_to(o, :a=)
  end

  def test_respond_to_with_lazy_getter
    o = OpenStruct.new a: 1
    assert_respond_to(o, :a)
    assert_respond_to(o, :a=)
  end

  def test_respond_to_allocated
    assert_not_respond_to(OpenStruct.allocate, :a)
  end

  def test_equality
    o1 = OpenStruct.new
    o2 = OpenStruct.new
    assert_equal(o1, o2)

    o1.a = 'a'
    assert_not_equal(o1, o2)

    o2.a = 'a'
    assert_equal(o1, o2)

    o1.a = 'b'
    assert_not_equal(o1, o2)

    o2 = Object.new
    o2.instance_eval{@table = {:a => 'b'}}
    assert_not_equal(o1, o2)
  end

  def test_inspect
    foo = OpenStruct.new
    assert_equal("#<OpenStruct>", foo.inspect)
    foo.bar = 1
    foo.baz = 2
    assert_equal("#<OpenStruct bar=1, baz=2>", foo.inspect)
    assert_equal(false, foo.inspect.frozen?)

    foo = OpenStruct.new
    foo.bar = OpenStruct.new
    assert_equal('#<OpenStruct bar=#<OpenStruct>>', foo.inspect)
    foo.bar.foo = foo
    assert_equal('#<OpenStruct bar=#<OpenStruct foo=#<OpenStruct ...>>>', foo.inspect)
    assert_equal(false, foo.inspect.frozen?)
  end

  def test_frozen
    o = OpenStruct.new(foo: 42)
    o.a = 'a'
    o.freeze
    expected_error = defined?(FrozenError) ? FrozenError : RuntimeError
    assert_raise(expected_error) {o.b = 'b'}
    assert_not_respond_to(o, :b)
    assert_raise(expected_error) {o.a = 'z'}
    assert_equal('a', o.a)
    assert_equal(42, o.foo)
    o = OpenStruct.new :a => 42
    def o.frozen?; nil end
    o.freeze
    assert_raise(expected_error, '[ruby-core:22559]') {o.a = 1764}
  end

  def test_delete_field
    bug = '[ruby-core:33010]'
    o = OpenStruct.new
    assert_not_respond_to(o, :a)
    assert_not_respond_to(o, :a=)
    o.a = 'a'
    assert_respond_to(o, :a)
    assert_respond_to(o, :a=)
    a = o.delete_field :a
    assert_not_respond_to(o, :a, bug)
    assert_not_respond_to(o, :a=, bug)
    assert_equal(a, 'a')
    s = Object.new
    def s.to_sym
      :foo
    end
    o[s] = true
    assert_respond_to(o, :foo)
    assert_respond_to(o, :foo=)
    o.delete_field s
    assert_not_respond_to(o, :foo)
    assert_not_respond_to(o, :foo=)
  end

  def test_setter
    os = OpenStruct.new
    os[:foo] = :bar
    assert_equal :bar, os.foo
    os['foo'] = :baz
    assert_equal :baz, os.foo
  end

  def test_getter
    os = OpenStruct.new
    os.foo = :bar
    assert_equal :bar, os[:foo]
    assert_equal :bar, os['foo']
  end

  def test_dig
    os1 = OpenStruct.new
    os2 = OpenStruct.new
    os1.child = os2
    os2.foo = :bar
    os2.child = [42]
    assert_equal :bar, os1.dig("child", :foo)
    assert_nil os1.dig("parent", :foo)
    assert_raise(TypeError) { os1.dig("child", 0) }
  end

  def test_to_h
    h = {name: "John Smith", age: 70, pension: 300}
    os = OpenStruct.new(h)
    to_h = os.to_h
    assert_equal(h, to_h)

    to_h[:age] = 71
    assert_equal(70, os.age)
    assert_equal(70, h[:age])

    assert_equal(h, OpenStruct.new("name" => "John Smith", "age" => 70, pension: 300).to_h)
  end

  def test_to_h_with_block
    os = OpenStruct.new("country" => "Australia", :capital => "Canberra")
    assert_equal({"country" => "AUSTRALIA", "capital" => "CANBERRA" },
                 os.to_h {|name, value| [name.to_s, value.upcase]})
    assert_equal("Australia", os.country)
  end

  def test_each_pair
    h = {name: "John Smith", age: 70, pension: 300}
    os = OpenStruct.new(h)
    assert_same os, os.each_pair{ }
    assert_equal '#<Enumerator: #<OpenStruct name="John Smith", age=70, pension=300>:each_pair>', os.each_pair.inspect
    assert_equal [[:name, "John Smith"], [:age, 70], [:pension, 300]], os.each_pair.to_a
    assert_equal 3, os.each_pair.size
  end

  def test_eql_and_hash
    os1 = OpenStruct.new age: 70
    os2 = OpenStruct.new age: 70.0
    assert_equal os1, os2
    assert_equal false, os1.eql?(os2)
    assert_not_equal os1.hash, os2.hash
    assert_equal true, os1.eql?(os1.dup)
    assert_equal os1.hash, os1.dup.hash
  end

  def test_method_missing
    os = OpenStruct.new
    e = assert_raise(NoMethodError) { os.foo true }
    assert_equal :foo, e.name
    assert_equal [true], e.args
    assert_match(/#{__callee__}/, e.backtrace[0])
    e = assert_raise(ArgumentError) { os.send :foo=, true, true }
    assert_match(/#{__callee__}/, e.backtrace[0])
  end

  def test_accessor_defines_method
    os = OpenStruct.new(foo: 42)
    assert_respond_to(os, :foo)
    assert_equal([], os.singleton_methods)
    assert_equal(42, os.foo)
    assert_equal([:foo, :foo=], os.singleton_methods.sort)
  end

  def test_does_not_redefine
    os = OpenStruct.new(foo: 42)
    def os.foo
      43
    end
    os.foo = 44
    assert_equal(43, os.foo)
  end

  def test_allocate_subclass
    bug = '[ruby-core:80292] [Bug #13358] allocate should not call initialize'
    c = Class.new(OpenStruct) {
      def initialize(x,y={})super(y);end
    }
    os = assert_nothing_raised(ArgumentError, bug) {c.allocate}
    assert_instance_of(c, os)
  end

  def test_private_method
    os = OpenStruct.new
    class << os
      private
      def foo
      end
    end
    assert_raise_with_message(NoMethodError, /private method/) do
      os.foo true, true
    end
  end

  def test_protected_method
    os = OpenStruct.new
    class << os
      protected
      def foo
      end
    end
    assert_raise_with_message(NoMethodError, /protected method/) do
      os.foo true, true
    end
  end
end