[270] | 1 | ##
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| 2 | # Class ISO Test
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| 3 |
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| 4 | assert('Class', '15.2.3') do
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| 5 | assert_equal(Class, Class.class)
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| 6 | end
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| 7 |
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| 8 | assert('Class#initialize', '15.2.3.3.1') do
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| 9 | c = Class.new do
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| 10 | def test
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| 11 | :test
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| 12 | end
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| 13 | end.new
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| 14 |
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| 15 | assert_equal(c.test, :test)
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| 16 | end
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| 17 |
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| 18 | assert('Class#initialize_copy', '15.2.3.3.2') do
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| 19 | class TestClass
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| 20 | attr_accessor :n
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| 21 | def initialize(n)
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| 22 | @n = n
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| 23 | end
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| 24 | def initialize_copy(obj)
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| 25 | @n = n
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| 26 | end
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| 27 | end
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| 28 |
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| 29 | c1 = TestClass.new('Foo')
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| 30 | c2 = c1.dup
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| 31 | c3 = TestClass.new('Bar')
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| 32 |
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| 33 | assert_equal(c1.n, c2.n)
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| 34 | assert_not_equal(c1.n, c3.n)
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| 35 | end
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| 36 |
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| 37 | assert('Class#new', '15.2.3.3.3') do
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| 38 | assert_raise(TypeError, 'Singleton should raise TypeError') do
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[439] | 39 | (class <<"a"; self; end).new
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[270] | 40 | end
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| 41 |
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| 42 | class TestClass
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| 43 | def initialize args, &block
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| 44 | @result = if not args.nil? and block.nil?
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| 45 | # only arguments
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| 46 | :only_args
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| 47 | elsif not args.nil? and not block.nil?
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| 48 | # args and block is given
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| 49 | :args_and_block
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| 50 | else
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| 51 | # this should never happen
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| 52 | :broken
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| 53 | end
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| 54 | end
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| 55 |
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| 56 | def result; @result; end
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| 57 | end
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| 58 |
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| 59 | assert_equal(:only_args, TestClass.new(:arg).result)
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| 60 | # with block doesn't work yet
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| 61 | end
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| 62 |
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| 63 | assert('Class#superclass', '15.2.3.3.4') do
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| 64 | class SubClass < String; end
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| 65 | assert_equal(String, SubClass.superclass)
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| 66 | end
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| 67 |
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| 68 | # Not ISO specified
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| 69 |
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| 70 | assert('Class 1') do
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| 71 | class C1; end
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| 72 | assert_equal(Class, C1.class)
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| 73 | end
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| 74 |
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| 75 | assert('Class 2') do
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| 76 | class C2; end
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| 77 | assert_equal(C2, C2.new.class)
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| 78 | end
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| 79 |
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| 80 | assert('Class 3') do
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| 81 | class C3; end
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| 82 | assert_equal(Class, C3.new.class.class)
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| 83 | end
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| 84 |
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| 85 | assert('Class 4') do
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| 86 | class C4_A; end
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| 87 | class C4 < C4_A; end
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| 88 | assert_equal(Class, C4.class)
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| 89 | end
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| 90 |
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| 91 | assert('Class 5') do
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| 92 | class C5_A; end
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| 93 | class C5 < C5_A; end
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| 94 | assert_equal(C5, C5.new.class)
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| 95 | end
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| 96 |
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| 97 | assert('Class 6') do
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| 98 | class C6_A; end
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| 99 | class C6 < C6_A; end
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| 100 | assert_equal(Class, C6.new.class.class)
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| 101 | end
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| 102 |
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| 103 | assert('Class 7') do
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| 104 | class C7_A; end
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| 105 | class C7_B; end
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| 106 |
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| 107 | class C7 < C7_A; end
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| 108 |
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| 109 | assert_raise(TypeError) do
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| 110 | # Different superclass.
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| 111 | class C7 < C7_B; end
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| 112 | end
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| 113 | end
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| 114 |
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| 115 | assert('Class 8') do
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| 116 | class C8_A; end
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| 117 |
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| 118 | class C8; end # superclass is Object
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| 119 |
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| 120 | assert_raise(TypeError) do
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| 121 | # Different superclass.
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| 122 | class C8 < C8_A; end
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| 123 | end
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| 124 | end
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| 125 |
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| 126 | assert('Class 9') do
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| 127 | Class9Const = "a"
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| 128 |
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| 129 | assert_raise(TypeError) do
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| 130 | class Class9Const; end
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| 131 | end
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| 132 | end
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| 133 |
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| 134 | assert('Class Module 1') do
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| 135 | module M; end
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| 136 | assert_equal(Module, M.class)
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| 137 | end
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| 138 |
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| 139 | assert('Class Module 2') do
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| 140 | module M; end
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| 141 | class C; include M; end
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| 142 | assert_equal(C, C.new.class)
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| 143 | end
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| 144 |
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| 145 | # nested class
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| 146 | assert('Class Nested 1') do
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| 147 | class A; end
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| 148 | class A::B; end
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| 149 | assert_equal(A::B, A::B)
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| 150 | end
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| 151 |
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| 152 | assert('Class Nested 2') do
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| 153 | class A; end
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| 154 | class A::B; end
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| 155 | assert_equal(A::B, A::B.new.class)
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| 156 | end
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| 157 |
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| 158 | assert('Class Nested 3') do
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| 159 | class A; end
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| 160 | class A::B; end
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| 161 | assert_equal(Class, A::B.new.class.class)
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| 162 | end
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| 163 |
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| 164 | assert('Class Nested 4') do
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| 165 | class A; end
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| 166 | class A::B; end
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| 167 | class A::B::C; end
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| 168 | assert_equal(A::B::C, A::B::C)
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| 169 | end
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| 170 |
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| 171 | assert('Class Nested 5') do
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| 172 | class A; end
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| 173 | class A::B; end
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| 174 | class A::B::C; end
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| 175 | assert_equal(Class, A::B::C.class)
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| 176 | end
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| 177 |
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| 178 | assert('Class Nested 6') do
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| 179 | class A; end
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| 180 | class A::B; end
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| 181 | class A::B::C; end
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| 182 | assert_equal(A::B::C, A::B::C.new.class)
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| 183 | end
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| 184 |
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| 185 | assert('Class Nested 7') do
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| 186 | class A; end
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| 187 | class A::B; end
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| 188 | class A::B2 < A::B; end
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| 189 | assert_equal(A::B2, A::B2)
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| 190 | end
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| 191 |
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| 192 | assert('Class Nested 8') do
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| 193 | class A; end
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| 194 | class A::B; end
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| 195 | class A::B2 < A::B; end
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| 196 | assert_equal(Class, A::B2.class)
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| 197 | end
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| 198 |
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| 199 | assert('Class Colon 1') do
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| 200 | class A; end
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| 201 | A::C = 1
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| 202 | assert_equal(1, A::C)
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| 203 | end
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| 204 |
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| 205 | assert('Class Colon 2') do
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| 206 | class A; class ::C; end end
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| 207 | assert_equal(C, C)
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| 208 | end
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| 209 |
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| 210 | assert('Class Colon 3') do
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| 211 | class A; class ::C; end end
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| 212 | assert_equal(Class, C.class)
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| 213 | end
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| 214 |
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| 215 | assert('Class Dup 1') do
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| 216 | class C; end
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| 217 | assert_equal(Class, C.dup.class)
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| 218 | end
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| 219 |
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| 220 | assert('Class Dup 2') do
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| 221 | module M; end
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| 222 | assert_equal(Module, M.dup.class)
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| 223 | end
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| 224 |
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| 225 | assert('Class.new') do
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| 226 | assert_equal(Class, Class.new.class)
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| 227 | a = []
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| 228 | klass = Class.new do |c|
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| 229 | a << c
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| 230 | end
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| 231 | assert_equal([klass], a)
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| 232 | end
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| 233 |
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| 234 | assert('class to return the last value') do
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| 235 | m = class C; :m end
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| 236 | assert_equal(m, :m)
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| 237 | end
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| 238 |
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[439] | 239 | assert('class to return nil if body is empty') do
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| 240 | assert_nil(class C end)
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| 241 | assert_nil(class << self; end)
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| 242 | end
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| 243 |
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[270] | 244 | assert('raise when superclass is not a class') do
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| 245 | module FirstModule; end
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| 246 | assert_raise(TypeError, 'should raise TypeError') do
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| 247 | class FirstClass < FirstModule; end
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| 248 | end
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| 249 |
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| 250 | class SecondClass; end
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| 251 | assert_raise(TypeError, 'should raise TypeError') do
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| 252 | class SecondClass < false; end
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| 253 | end
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| 254 |
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| 255 | class ThirdClass; end
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| 256 | assert_raise(TypeError, 'should raise TypeError') do
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| 257 | class ThirdClass < ThirdClass; end
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| 258 | end
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| 259 | end
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| 260 |
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| 261 | assert('Class#inherited') do
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| 262 | class Foo
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| 263 | @@subclass_name = nil
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| 264 | def self.inherited(subclass)
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| 265 | @@subclass_name = subclass
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| 266 | end
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| 267 | def self.subclass_name
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| 268 | @@subclass_name
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| 269 | end
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| 270 | end
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| 271 |
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| 272 | assert_equal(nil, Foo.subclass_name)
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| 273 |
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| 274 | class Bar < Foo
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| 275 | end
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| 276 |
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| 277 | assert_equal(Bar, Foo.subclass_name)
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| 278 |
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| 279 | class Baz < Bar
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| 280 | end
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| 281 |
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| 282 | assert_equal(Baz, Foo.subclass_name)
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| 283 | end
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| 284 |
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| 285 | assert('singleton tests') do
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| 286 | module FooMod
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| 287 | def run_foo_mod
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| 288 | 100
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| 289 | end
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| 290 | end
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| 291 |
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| 292 | bar = String.new
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| 293 |
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| 294 | baz = class << bar
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| 295 | extend FooMod
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| 296 | def self.run_baz
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| 297 | 200
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| 298 | end
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| 299 | end
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| 300 |
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[439] | 301 | assert_equal :run_baz, baz
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[270] | 302 |
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| 303 | assert_raise(NoMethodError, 'should raise NoMethodError') do
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| 304 | bar.run_foo_mod
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| 305 | end
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| 306 | assert_raise(NoMethodError, 'should raise NoMethodError') do
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| 307 | bar.run_baz
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| 308 | end
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| 309 |
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| 310 | baz = class << bar
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| 311 | extend FooMod
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| 312 | def self.run_baz
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| 313 | 300
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| 314 | end
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| 315 | self
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| 316 | end
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| 317 |
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[439] | 318 | assert_true baz.respond_to? :run_baz
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| 319 | assert_true baz.respond_to? :run_foo_mod
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[270] | 320 | assert_equal 100, baz.run_foo_mod
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| 321 | assert_equal 300, baz.run_baz
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| 322 |
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| 323 | assert_raise(NoMethodError, 'should raise NoMethodError') do
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| 324 | bar.run_foo_mod
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| 325 | end
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| 326 | assert_raise(NoMethodError, 'should raise NoMethodError') do
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| 327 | bar.run_baz
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| 328 | end
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| 329 |
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| 330 | fv = false
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| 331 | class << fv
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| 332 | def self.run_false
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| 333 | 5
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| 334 | end
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| 335 | end
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| 336 |
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| 337 | nv = nil
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| 338 | class << nv
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| 339 | def self.run_nil
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| 340 | 6
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| 341 | end
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| 342 | end
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| 343 |
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| 344 | tv = true
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| 345 | class << tv
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| 346 | def self.run_nil
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| 347 | 7
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| 348 | end
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| 349 | end
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| 350 |
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| 351 | assert_raise(TypeError, 'should raise TypeError') do
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| 352 | num = 1.0
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| 353 | class << num
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| 354 | def self.run_nil
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| 355 | 7
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| 356 | end
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| 357 | end
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[439] | 358 | end if Object.const_defined?(:Float)
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| 359 |
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| 360 | o = Object.new
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| 361 | sc = class << o; self end
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| 362 | o.freeze
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| 363 | assert_predicate(sc, :frozen?)
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| 364 |
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| 365 | assert_predicate(class << Object.new.freeze; self end, :frozen?)
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[270] | 366 | end
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| 367 |
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| 368 | assert('clone Class') do
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| 369 | class Foo
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| 370 | def func
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| 371 | true
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| 372 | end
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| 373 | end
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| 374 |
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[439] | 375 | assert_true(Foo.clone.new.func)
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[270] | 376 | end
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| 377 |
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| 378 | assert('class variable and class << self style class method') do
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| 379 | class ClassVariableTest
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| 380 | @@class_variable = "value"
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| 381 | class << self
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| 382 | def class_variable
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| 383 | @@class_variable
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| 384 | end
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| 385 | end
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| 386 | end
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| 387 |
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| 388 | assert_equal("value", ClassVariableTest.class_variable)
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| 389 | end
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| 390 |
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[331] | 391 | assert('class variable definition in singleton_class') do
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| 392 | class ClassVariableDefinitionInSingletonTest
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| 393 | class << self
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| 394 | @@class_variable = "value"
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| 395 | end
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| 396 | def class_variable
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| 397 | @@class_variable
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| 398 | end
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| 399 | end
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| 400 |
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| 401 | assert_equal("value", ClassVariableDefinitionInSingletonTest.new.class_variable)
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| 402 | end
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| 403 |
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| 404 | assert('class variable in module and class << self style class method') do
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| 405 | module ClassVariableInModuleTest
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| 406 | @@class_variable = "value"
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| 407 | class << self
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| 408 | def class_variable
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| 409 | @@class_variable
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| 410 | end
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| 411 | end
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| 412 | end
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| 413 |
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| 414 | assert_equal("value", ClassVariableInModuleTest.class_variable)
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| 415 | end
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| 416 |
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| 417 | assert('child class/module defined in singleton class get parent constant') do
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| 418 | actual = module GetParentConstantTest
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| 419 | EXPECT = "value"
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| 420 | class << self
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| 421 | class CHILD
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| 422 | class << self
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| 423 | EXPECT
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| 424 | end
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| 425 | end
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| 426 | end
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| 427 | end
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| 428 | assert_equal("value", actual)
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| 429 | end
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| 430 |
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| 431 | assert('overriding class variable with a module (#3235)') do
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| 432 | module ModuleWithCVar
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| 433 | @@class_variable = 1
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| 434 | end
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| 435 | class CVarOverrideTest
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| 436 | @@class_variable = 2
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| 437 | include ModuleWithCVar
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| 438 |
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| 439 | assert_equal(1, @@class_variable)
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| 440 | end
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| 441 | end
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| 442 |
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[439] | 443 | assert('class variable for frozen class/module') do
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| 444 | module CVarForFrozenModule
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| 445 | freeze
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| 446 | assert_raise(FrozenError) { @@cv = 1 }
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| 447 | end
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| 448 |
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| 449 | class CVarForFrozenClassA
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| 450 | @@a = nil
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| 451 | freeze
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| 452 | end
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| 453 | class CVarForFrozenClassB < CVarForFrozenClassA
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| 454 | def a=(v)
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| 455 | @@a = v
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| 456 | end
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| 457 | end
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| 458 | b = CVarForFrozenClassB.new
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| 459 | assert_raise(FrozenError) { b.a = 1 }
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| 460 | end
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| 461 |
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[270] | 462 | assert('class with non-class/module outer raises TypeError') do
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| 463 | assert_raise(TypeError) { class 0::C1; end }
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| 464 | assert_raise(TypeError) { class []::C2; end }
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| 465 | end
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