1 | ##
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2 | # Array(Ext) Test
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3 |
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4 | def assert_permutation_combination(exp, receiver, meth, *args)
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5 | act = []
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6 | ret = receiver.__send__(meth, *args) { |v| act << v }
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7 | assert "assert_#{meth}" do
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8 | assert_equal(exp, act.sort)
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9 | assert_same(receiver, ret)
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10 | end
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11 | end
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12 |
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13 | def assert_permutation(exp, receiver, *args)
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14 | assert_permutation_combination(exp, receiver, :permutation, *args)
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15 | end
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16 |
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17 | def assert_combination(exp, receiver, *args)
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18 | assert_permutation_combination(exp, receiver, :combination, *args)
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19 | end
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20 |
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21 | assert("Array#assoc") do
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22 | s1 = [ "colors", "red", "blue", "green" ]
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23 | s2 = [ "letters", "a", "b", "c" ]
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24 | s3 = "foo"
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25 | a = [ s1, s2, s3 ]
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26 |
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27 | assert_equal [ "letters", "a", "b", "c" ], a.assoc("letters")
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28 | assert_nil a.assoc("foo")
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29 | end
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30 |
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31 | assert("Array#at") do
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32 | a = [ "a", "b", "c", "d", "e" ]
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33 | assert_equal "a", a.at(0)
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34 | assert_equal "e", a.at(-1)
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35 | end
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36 |
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37 | assert("Array#rassoc") do
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38 | a = [ [ 1, "one"], [2, "two"], [3, "three"], ["ii", "two"] ]
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39 |
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40 | assert_equal [2, "two"], a.rassoc("two")
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41 | assert_nil a.rassoc("four")
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42 | end
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43 |
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44 | assert("Array#uniq!") do
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45 | a = [1, 2, 3, 1]
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46 | a.uniq!
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47 | assert_equal [1, 2, 3], a
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48 |
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49 | b = [ "a", "b", "c" ]
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50 | assert_nil b.uniq!
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51 |
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52 | c = [["student","sam"], ["student","george"], ["teacher","matz"]]
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53 | assert_equal [["student", "sam"], ["teacher", "matz"]], c.uniq! { |s| s.first }
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54 |
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55 | d = [["student","sam"], ["teacher","matz"]]
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56 | assert_nil d.uniq! { |s| s.first }
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57 | end
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58 |
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59 | assert("Array#uniq") do
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60 | a = [1, 2, 3, 1]
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61 | assert_equal [1, 2, 3], a.uniq
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62 | assert_equal [1, 2, 3, 1], a
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63 |
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64 | b = [["student","sam"], ["student","george"], ["teacher","matz"]]
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65 | assert_equal [["student", "sam"], ["teacher", "matz"]], b.uniq { |s| s.first }
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66 | end
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67 |
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68 | assert("Array#-") do
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69 | a = [1, 2, 3, 1]
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70 | b = [1]
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71 | c = 1
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72 |
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73 | assert_raise(TypeError) { a - c }
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74 | assert_equal [2, 3], (a - b)
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75 | assert_equal [1, 2, 3, 1], a
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76 | end
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77 |
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78 | assert("Array#|") do
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79 | a = [1, 2, 3, 1]
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80 | b = [1, 4]
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81 | c = 1
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82 |
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83 | assert_raise(TypeError) { a | c }
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84 | assert_equal [1, 2, 3, 4], (a | b)
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85 | assert_equal [1, 2, 3, 1], a
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86 | end
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87 |
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88 | assert("Array#union") do
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89 | a = [1, 2, 3, 1]
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90 | b = [1, 4]
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91 | c = [1, 5]
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92 |
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93 | assert_equal [1, 2, 3, 4, 5], a.union(b,c)
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94 | end
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95 |
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96 | assert("Array#difference") do
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97 | a = [1, 2, 3, 1, 6, 7]
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98 | b = [1, 4, 6]
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99 | c = [1, 5, 7]
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100 |
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101 | assert_equal [2, 3], a.difference(b,c)
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102 | end
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103 |
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104 | assert("Array#&") do
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105 | a = [1, 2, 3, 1]
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106 | b = [1, 4]
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107 | c = 1
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108 |
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109 | assert_raise(TypeError) { a & c }
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110 | assert_equal [1], (a & b)
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111 | assert_equal [1, 2, 3, 1], a
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112 | end
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113 |
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114 | assert("Array#intersection") do
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115 | a = [1, 2, 3, 1, 8, 6, 7, 8]
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116 | b = [1, 4, 6, 8]
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117 | c = [1, 5, 7, 8]
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118 |
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119 | assert_equal [1, 8], a.intersection(b,c)
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120 | end
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121 |
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122 | assert("Array#flatten") do
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123 | assert_equal [1, 2, "3", {4=>5}, :'6'], [1, 2, "3", {4=>5}, :'6'].flatten
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124 | assert_equal [1, 2, 3, 4, 5, 6], [1, 2, [3, 4, 5], 6].flatten
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125 | assert_equal [1, 2, 3, 4, 5, 6], [1, 2, [3, [4, 5], 6]].flatten
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126 | assert_equal [1, [2, [3, [4, [5, [6]]]]]], [1, [2, [3, [4, [5, [6]]]]]].flatten(0)
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127 | assert_equal [1, 2, [3, [4, [5, [6]]]]], [1, [2, [3, [4, [5, [6]]]]]].flatten(1)
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128 | assert_equal [1, 2, 3, [4, [5, [6]]]], [1, [2, [3, [4, [5, [6]]]]]].flatten(2)
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129 | assert_equal [1, 2, 3, 4, [5, [6]]], [1, [2, [3, [4, [5, [6]]]]]].flatten(3)
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130 | assert_equal [1, 2, 3, 4, 5, [6]], [1, [2, [3, [4, [5, [6]]]]]].flatten(4)
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131 | assert_equal [1, 2, 3, 4, 5, 6], [1, [2, [3, [4, [5, [6]]]]]].flatten(5)
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132 | end
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133 |
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134 | assert("Array#flatten!") do
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135 | assert_equal [1, 2, 3, 4, 5, 6], [1, 2, [3, [4, 5], 6]].flatten!
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136 | end
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137 |
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138 | assert("Array#compact") do
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139 | a = [1, nil, "2", nil, :t, false, nil]
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140 | assert_equal [1, "2", :t, false], a.compact
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141 | assert_equal [1, nil, "2", nil, :t, false, nil], a
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142 | end
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143 |
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144 | assert("Array#compact!") do
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145 | a = [1, nil, "2", nil, :t, false, nil]
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146 | a.compact!
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147 | assert_equal [1, "2", :t, false], a
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148 | end
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149 |
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150 | assert("Array#fetch") do
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151 | a = [ 11, 22, 33, 44 ]
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152 | assert_equal 22, a.fetch(1)
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153 | assert_equal 44, a.fetch(-1)
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154 | assert_equal 'cat', a.fetch(4, 'cat')
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155 | ret = 0
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156 | a.fetch(100) { |i| ret = i }
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157 | assert_equal 100, ret
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158 | assert_raise(IndexError) { a.fetch(100) }
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159 | end
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160 |
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161 | assert("Array#fill") do
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162 | a = [ "a", "b", "c", "d" ]
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163 | assert_equal ["x", "x", "x", "x"], a.fill("x")
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164 | assert_equal ["x", "x", "x", "w"], a.fill("w", -1)
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165 | assert_equal ["x", "x", "z", "z"], a.fill("z", 2, 2)
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166 | assert_equal ["y", "y", "z", "z"], a.fill("y", 0..1)
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167 | assert_equal [0, 1, 4, 9], a.fill { |i| i*i }
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168 | assert_equal [0, 1, 8, 27], a.fill(-2) { |i| i*i*i }
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169 | assert_equal [0, 2, 3, 27], a.fill(1, 2) { |i| i+1 }
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170 | assert_equal [1, 2, 3, 27], a.fill(0..1) { |i| i+1 }
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171 | assert_raise(ArgumentError) { a.fill }
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172 |
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173 | assert_equal([0, 1, 2, 3, -1, 5], [0, 1, 2, 3, 4, 5].fill(-1, -2, 1))
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174 | assert_equal([0, 1, 2, 3, -1, -1, -1], [0, 1, 2, 3, 4, 5].fill(-1, -2, 3))
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175 | assert_equal([0, 1, 2, -1, -1, 5], [0, 1, 2, 3, 4, 5].fill(-1, 3..4))
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176 | assert_equal([0, 1, 2, -1, 4, 5], [0, 1, 2, 3, 4, 5].fill(-1, 3...4))
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177 | assert_equal([0, 1, -1, -1, -1, 5], [0, 1, 2, 3, 4, 5].fill(-1, 2..-2))
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178 | assert_equal([0, 1, -1, -1, 4, 5], [0, 1, 2, 3, 4, 5].fill(-1, 2...-2))
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179 | assert_equal([0, 1, 2, 13, 14, 5], [0, 1, 2, 3, 4, 5].fill(3..4){|i| i+10})
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180 | assert_equal([0, 1, 2, 13, 4, 5], [0, 1, 2, 3, 4, 5].fill(3...4){|i| i+10})
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181 | assert_equal([0, 1, 12, 13, 14, 5], [0, 1, 2, 3, 4, 5].fill(2..-2){|i| i+10})
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182 | assert_equal([0, 1, 12, 13, 4, 5], [0, 1, 2, 3, 4, 5].fill(2...-2){|i| i+10})
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183 |
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184 | assert_equal [1, 2, 3, 4, 'x', 'x'], [1, 2, 3, 4, 5, 6].fill('x', -2..-1)
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185 | assert_equal [1, 2, 3, 4, 'x', 6], [1, 2, 3, 4, 5, 6].fill('x', -2...-1)
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186 | assert_equal [1, 2, 3, 4, 5, 6], [1, 2, 3, 4, 5, 6].fill('x', -2...-2)
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187 | assert_equal [1, 2, 3, 4, 'x', 6], [1, 2, 3, 4, 5, 6].fill('x', -2..-2)
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188 | assert_equal [1, 2, 3, 4, 5, 6], [1, 2, 3, 4, 5, 6].fill('x', -2..0)
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189 | end
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190 |
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191 | assert("Array#reverse_each") do
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192 | a = [ "a", "b", "c", "d" ]
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193 | b = []
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194 | a.reverse_each do |i|
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195 | b << i
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196 | end
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197 | assert_equal [ "d", "c", "b", "a" ], b
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198 | end
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199 |
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200 | assert("Array#rotate") do
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201 | a = ["a", "b", "c", "d"]
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202 | assert_equal ["b", "c", "d", "a"], a.rotate
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203 | assert_equal ["a", "b", "c", "d"], a
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204 | assert_equal ["c", "d", "a", "b"], a.rotate(2)
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205 | assert_equal ["b", "c", "d", "a"], a.rotate(-3)
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206 | assert_equal ["c", "d", "a", "b"], a.rotate(10)
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207 | assert_equal [], [].rotate
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208 | end
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209 |
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210 | assert("Array#rotate!") do
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211 | a = ["a", "b", "c", "d"]
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212 | assert_equal ["b", "c", "d", "a"], a.rotate!
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213 | assert_equal ["b", "c", "d", "a"], a
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214 | assert_equal ["d", "a", "b", "c"], a.rotate!(2)
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215 | assert_equal ["a", "b", "c", "d"], a.rotate!(-3)
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216 | assert_equal ["c", "d", "a", "b"], a.rotate(10)
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217 | assert_equal [], [].rotate!
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218 | end
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219 |
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220 | assert("Array#delete_if") do
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221 | a = [1, 2, 3, 4, 5]
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222 | assert_equal [1, 2, 3, 4, 5], a.delete_if { false }
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223 | assert_equal [1, 2, 3, 4, 5], a
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224 |
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225 | a = [1, 2, 3, 4, 5]
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226 | assert_equal [], a.delete_if { true }
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227 | assert_equal [], a
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228 |
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229 | a = [1, 2, 3, 4, 5]
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230 | assert_equal [1, 2, 3], a.delete_if { |i| i > 3 }
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231 | assert_equal [1, 2, 3], a
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232 | end
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233 |
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234 | assert("Array#reject!") do
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235 | a = [1, 2, 3, 4, 5]
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236 | assert_nil a.reject! { false }
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237 | assert_equal [1, 2, 3, 4, 5], a
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238 |
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239 | a = [1, 2, 3, 4, 5]
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240 | assert_equal [], a.reject! { true }
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241 | assert_equal [], a
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242 |
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243 | a = [1, 2, 3, 4, 5]
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244 | assert_equal [1, 2, 3], a.reject! { |val| val > 3 }
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245 | assert_equal [1, 2, 3], a
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246 | end
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247 |
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248 | assert("Array#insert") do
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249 | a = ["a", "b", "c", "d"]
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250 | assert_equal ["a", "b", 99, "c", "d"], a.insert(2, 99)
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251 | assert_equal ["a", "b", 99, "c", 1, 2, 3, "d"], a.insert(-2, 1, 2, 3)
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252 |
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253 | b = ["a", "b", "c", "d"]
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254 | assert_equal ["a", "b", "c", "d", nil, nil, 99], b.insert(6, 99)
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255 | end
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256 |
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257 | assert("Array#bsearch") do
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258 | # Find minimum mode
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259 | a = [0, 2, 4]
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260 | assert_equal 0, a.bsearch{ |x| x >= -1 }
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261 | assert_equal 0, a.bsearch{ |x| x >= 0 }
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262 | assert_equal 2, a.bsearch{ |x| x >= 1 }
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263 | assert_equal 2, a.bsearch{ |x| x >= 2 }
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264 | assert_equal 4, a.bsearch{ |x| x >= 3 }
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265 | assert_equal 4, a.bsearch{ |x| x >= 4 }
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266 | assert_nil a.bsearch{ |x| x >= 5 }
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267 |
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268 | # Find any mode
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269 | a = [0, 4, 8]
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270 | def between(lo, x, hi)
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271 | if x < lo
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272 | 1
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273 | elsif x > hi
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274 | -1
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275 | else
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276 | 0
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277 | end
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278 | end
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279 | assert_nil a.bsearch{ |x| between(-3, x, -1) }
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280 | assert_equal 0, a.bsearch{ |x| between(-1, x, 1) }
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281 | assert_nil a.bsearch{ |x| between( 1, x, 3) }
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282 | assert_equal 4, a.bsearch{ |x| between( 3, x, 5) }
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283 | assert_nil a.bsearch{ |x| between( 5, x, 7) }
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284 | assert_equal 8, a.bsearch{ |x| between( 7, x, 9) }
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285 | assert_nil a.bsearch{ |x| between( 9, x, 11) }
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286 |
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287 | assert_equal 0, a.bsearch{ |x| between( 0, x, 3) }
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288 | assert_equal 4, a.bsearch{ |x| between( 0, x, 4) }
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289 | assert_equal 4, a.bsearch{ |x| between( 4, x, 8) }
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290 | assert_equal 8, a.bsearch{ |x| between( 5, x, 8) }
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291 |
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292 | # Invalid block result
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293 | assert_raise TypeError, 'invalid block result (must be numeric, true, false or nil)' do
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294 | a.bsearch{ 'I like to watch the world burn' }
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295 | end
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296 | end
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297 |
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298 | # tested through Array#bsearch
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299 | #assert("Array#bsearch_index") do
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300 | #end
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301 |
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302 | assert("Array#keep_if") do
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303 | a = [1, 2, 3, 4, 5]
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304 | assert_equal [1, 2, 3, 4, 5], a.keep_if { true }
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305 | assert_equal [1, 2, 3, 4, 5], a
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306 |
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307 | a = [1, 2, 3, 4, 5]
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308 | assert_equal [], a.keep_if { false }
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309 | assert_equal [], a
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310 |
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311 | a = [1, 2, 3, 4, 5]
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312 | assert_equal [4, 5], a.keep_if { |val| val > 3 }
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313 | assert_equal [4, 5], a
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314 | end
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315 |
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316 | assert("Array#select!") do
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317 | a = [1, 2, 3, 4, 5]
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318 | assert_nil a.select! { true }
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319 | assert_equal [1, 2, 3, 4, 5], a
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320 |
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321 | a = [1, 2, 3, 4, 5]
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322 | assert_equal [], a.select! { false }
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323 | assert_equal [], a
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324 |
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325 | a = [1, 2, 3, 4, 5]
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326 | assert_equal [4, 5], a.select! { |val| val > 3 }
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327 | assert_equal [4, 5], a
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328 | end
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329 |
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330 | assert('Array#values_at') do
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331 | a = %w{red green purple white none}
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332 |
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333 | assert_equal %w{red purple none}, a.values_at(0, 2, 4)
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334 | assert_equal ['green', 'white', nil, nil], a.values_at(1, 3, 5, 7)
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335 | assert_equal ['none', 'white', 'white', nil], a.values_at(-1, -2, -2, -7)
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336 | assert_equal ['none', nil, nil, 'red', 'green', 'purple'], a.values_at(4..6, 0...3)
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337 | assert_raise(TypeError) { a.values_at 'tt' }
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338 | end
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339 |
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340 | assert('Array#to_h') do
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341 | assert_equal({}, [].to_h)
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342 | assert_equal({a: 1, b:2}, [[:a, 1], [:b, 2]].to_h)
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343 |
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344 | assert_raise(TypeError) { [1].to_h }
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345 | assert_raise(ArgumentError) { [[1]].to_h }
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346 | end
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347 |
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348 | assert("Array#index (block)") do
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349 | assert_nil (1..10).to_a.index { |i| i % 5 == 0 and i % 7 == 0 }
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350 | assert_equal 34, (1..100).to_a.index { |i| i % 5 == 0 and i % 7 == 0 }
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351 | end
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352 |
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353 | assert("Array#dig") do
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354 | h = [[[1]], 0]
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355 | assert_equal(1, h.dig(0, 0, 0))
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356 | assert_nil(h.dig(2, 0))
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357 | assert_raise(TypeError) {h.dig(:a)}
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358 | end
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359 |
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360 | assert("Array#slice!") do
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361 | a = [1, 2, 3]
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362 | b = a.slice!(0)
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363 | c = [1, 2, 3, 4, 5]
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364 | d = c.slice!(0, 2)
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365 | e = [1, 2, 3, 4, 5]
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366 | f = e.slice!(1..3)
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367 | g = [1, 2, 3]
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368 | h = g.slice!(-1)
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369 | i = [1, 2, 3]
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370 | j = i.slice!(0, -1)
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371 |
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372 | assert_equal(a, [2, 3])
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373 | assert_equal(b, 1)
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374 | assert_equal(c, [3, 4, 5])
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375 | assert_equal(d, [1, 2])
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376 | assert_equal(e, [1, 5])
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377 | assert_equal(f, [2, 3, 4])
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378 | assert_equal(g, [1, 2])
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379 | assert_equal(h, 3)
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380 | assert_equal(i, [1, 2, 3])
|
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381 | assert_equal(j, nil)
|
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382 | end
|
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383 |
|
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384 | assert("Array#permutation") do
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385 | a = [1, 2, 3]
|
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386 | assert_permutation([[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]], a)
|
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387 | assert_permutation([[1],[2],[3]], a, 1)
|
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388 | assert_permutation([[1,2],[1,3],[2,1],[2,3],[3,1],[3,2]], a, 2)
|
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389 | assert_permutation([[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]], a, 3)
|
---|
390 | assert_permutation([[]], a, 0)
|
---|
391 | assert_permutation([], a, 4)
|
---|
392 | assert_permutation([], a, -1)
|
---|
393 | end
|
---|
394 |
|
---|
395 | assert("Array#combination") do
|
---|
396 | a = [1, 2, 3, 4]
|
---|
397 | assert_combination([[1],[2],[3],[4]], a, 1)
|
---|
398 | assert_combination([[1,2],[1,3],[1,4],[2,3],[2,4],[3,4]], a, 2)
|
---|
399 | assert_combination([[1,2,3],[1,2,4],[1,3,4],[2,3,4]], a, 3)
|
---|
400 | assert_combination([[1,2,3,4]], a, 4)
|
---|
401 | assert_combination([[]], a, 0)
|
---|
402 | assert_combination([], a, 5)
|
---|
403 | assert_combination([], a, -1)
|
---|
404 | end
|
---|
405 |
|
---|
406 | assert('Array#transpose') do
|
---|
407 | assert_equal([].transpose, [])
|
---|
408 | assert_equal([[]].transpose, [])
|
---|
409 | assert_equal([[1]].transpose, [[1]])
|
---|
410 | assert_equal([[1,2,3]].transpose, [[1], [2], [3]])
|
---|
411 | assert_equal([[1], [2], [3]].transpose, [[1,2,3]])
|
---|
412 | assert_equal([[1,2], [3,4], [5,6]].transpose, [[1,3,5], [2,4,6]])
|
---|
413 | assert_raise(TypeError) { [1].transpose }
|
---|
414 | assert_raise(IndexError) { [[1], [2,3,4]].transpose }
|
---|
415 | end
|
---|