1 | assert('Fiber.new') do
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2 | f = Fiber.new{}
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3 | assert_kind_of Fiber, f
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4 | end
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5 |
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6 | assert('Fiber#resume') do
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7 | f = Fiber.new{|x| x }
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8 | assert_equal 2, f.resume(2)
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9 | end
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10 |
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11 | assert('Fiber#transfer') do
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12 | f2 = nil
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13 | f1 = Fiber.new do |v|
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14 | Fiber.yield v
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15 | f2.transfer
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16 | end
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17 | f2 = Fiber.new do
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18 | f1.transfer(1)
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19 | f1.transfer(1)
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20 | Fiber.yield 2
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21 | end
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22 | assert_equal 1, f2.resume
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23 | assert_raise(FiberError) { f2.resume }
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24 | assert_equal 2, f2.transfer
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25 | assert_raise(FiberError) { f1.resume }
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26 | f1.transfer
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27 | f2.resume
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28 | assert_false f1.alive?
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29 | assert_false f2.alive?
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30 | end
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31 |
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32 | assert('Fiber#alive?') do
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33 | f = Fiber.new{ Fiber.yield }
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34 | f.resume
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35 | assert_true f.alive?
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36 | f.resume
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37 | assert_false f.alive?
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38 | end
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39 |
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40 | assert('Fiber#==') do
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41 | root = Fiber.current
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42 | assert_equal root, root
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43 | assert_equal root, Fiber.current
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44 | assert_false root != Fiber.current
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45 | f = Fiber.new {
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46 | assert_false root == Fiber.current
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47 | }
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48 | f.resume
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49 | assert_false f == root
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50 | assert_true f != root
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51 | end
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52 |
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53 | assert('Fiber.yield') do
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54 | f = Fiber.new{|x| Fiber.yield x }
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55 | assert_equal 3, f.resume(3)
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56 | assert_true f.alive?
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57 | end
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58 |
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59 | assert('FiberError') do
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60 | assert_equal StandardError, FiberError.superclass
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61 | end
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62 |
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63 | assert('Fiber iteration') do
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64 | f1 = Fiber.new{
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65 | [1,2,3].each{|x| Fiber.yield(x)}
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66 | }
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67 | f2 = Fiber.new{
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68 | [9,8,7].each{|x| Fiber.yield(x)}
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69 | }
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70 | a = []
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71 | 3.times {
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72 | a << f1.resume
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73 | a << f2.resume
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74 | }
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75 | assert_equal [1,9,2,8,3,7], a
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76 | end
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77 |
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78 | assert('Fiber with splat in the block argument list') {
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79 | Fiber.new{|*x|x}.resume(1) == [1]
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80 | }
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81 |
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82 | assert('Fiber raises on resume when dead') do
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83 | assert_raise(FiberError) do
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84 | f = Fiber.new{}
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85 | f.resume
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86 | assert_false f.alive?
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87 | f.resume
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88 | end
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89 | end
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90 |
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91 | assert('Yield raises when called on root fiber') do
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92 | assert_raise(FiberError) { Fiber.yield }
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93 | end
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94 |
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95 | assert('Double resume of Fiber') do
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96 | f1 = Fiber.new {}
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97 | f2 = Fiber.new {
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98 | f1.resume
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99 | assert_raise(FiberError) { f2.resume }
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100 | Fiber.yield 0
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101 | }
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102 | assert_equal 0, f2.resume
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103 | f2.resume
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104 | assert_false f1.alive?
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105 | assert_false f2.alive?
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106 | end
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107 |
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108 | assert('Recursive resume of Fiber') do
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109 | f1, f2 = nil, nil
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110 | f1 = Fiber.new { assert_raise(FiberError) { f2.resume } }
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111 | f2 = Fiber.new {
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112 | f1.resume
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113 | Fiber.yield 0
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114 | }
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115 | f3 = Fiber.new {
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116 | f2.resume
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117 | }
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118 | assert_equal 0, f3.resume
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119 | f2.resume
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120 | assert_false f1.alive?
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121 | assert_false f2.alive?
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122 | assert_false f3.alive?
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123 | end
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124 |
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125 | assert('Root fiber resume') do
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126 | root = Fiber.current
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127 | assert_raise(FiberError) { root.resume }
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128 | f = Fiber.new {
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129 | assert_raise(FiberError) { root.resume }
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130 | }
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131 | f.resume
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132 | assert_false f.alive?
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133 | end
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134 |
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135 | assert('Fiber without block') do
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136 | assert_raise(ArgumentError) { Fiber.new }
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137 | end
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138 |
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139 |
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140 | assert('Transfer to self.') do
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141 | result = []
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142 | f = Fiber.new { result << :start; f.transfer; result << :end }
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143 | f.transfer
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144 | assert_equal [:start, :end], result
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145 |
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146 | result = []
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147 | f = Fiber.new { result << :start; f.transfer; result << :end }
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148 | f.resume
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149 | assert_equal [:start, :end], result
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150 | end
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151 |
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152 | assert('Resume transferred fiber') do
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153 | f = Fiber.new {
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154 | assert_raise(FiberError) { f.resume }
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155 | }
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156 | f.transfer
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157 | end
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158 |
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159 | assert('Root fiber transfer.') do
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160 | result = nil
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161 | root = Fiber.current
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162 | f = Fiber.new {
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163 | result = :ok
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164 | root.transfer
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165 | }
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166 | f.resume
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167 | assert_true f.alive?
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168 | assert_equal :ok, result
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169 | end
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170 |
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171 | assert('Break nested fiber with root fiber transfer') do
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172 | root = Fiber.current
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173 |
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174 | result = nil
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175 | f2 = nil
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176 | f1 = Fiber.new {
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177 | Fiber.yield f2.resume
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178 | result = :f1
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179 | }
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180 | f2 = Fiber.new {
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181 | result = :to_root
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182 | root.transfer :from_f2
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183 | result = :f2
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184 | }
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185 | assert_equal :from_f2, f1.resume
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186 | assert_equal :to_root, result
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187 | assert_equal :f2, f2.transfer
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188 | assert_equal :f2, result
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189 | assert_false f2.alive?
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190 | assert_equal :f1, f1.resume
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191 | assert_equal :f1, result
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192 | assert_false f1.alive?
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193 | end
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194 |
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195 | assert('CRuby Fiber#transfer test.') do
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196 | ary = []
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197 | f2 = nil
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198 | f1 = Fiber.new{
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199 | ary << f2.transfer(:foo)
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200 | :ok
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201 | }
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202 | f2 = Fiber.new{
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203 | ary << f1.transfer(:baz)
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204 | :ng
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205 | }
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206 | assert_equal :ok, f1.transfer
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207 | assert_equal [:baz], ary
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208 | end
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