[270] | 1 | ##
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| 2 | # Hash(Ext) Test
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| 3 |
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| 4 | assert('Hash.[] Hash') do
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| 5 | a = Hash['a_key' => 'a_value']
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| 6 |
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| 7 | assert_equal({'a_key' => 'a_value'}, a)
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| 8 | end
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| 9 |
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| 10 | assert('Hash.[] [ [ ["b_key", "b_value" ] ] ]') do
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| 11 | a = Hash[ [ ['b_key', 'b_value'] ] ]
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| 12 |
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| 13 | assert_equal({'b_key' => 'b_value'}, a)
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| 14 |
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| 15 | a = Hash[ [ ] ]
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| 16 |
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| 17 | assert_equal({}, a)
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| 18 |
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| 19 | assert_raise(ArgumentError) do
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| 20 | Hash[ [ ['b_key', 'b_value', 'b_over'] ] ]
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| 21 | end
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| 22 |
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| 23 | assert_raise(ArgumentError) do
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| 24 | Hash[ [ [] ] ]
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| 25 | end
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| 26 | end
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| 27 |
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| 28 | assert('Hash.[] "c_key", "c_value"') do
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| 29 | a = Hash['c_key', 'c_value', 'd_key', 1]
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| 30 |
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| 31 | assert_equal({'c_key' => 'c_value', 'd_key' => 1}, a)
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| 32 |
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| 33 | a = Hash[]
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| 34 |
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| 35 | assert_equal({}, a)
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| 36 |
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| 37 | assert_raise(ArgumentError) do
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| 38 | Hash['d_key']
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| 39 | end
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| 40 | end
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| 41 |
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[331] | 42 | assert('Hash.[] for sub class') do
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| 43 | sub_hash_class = Class.new(Hash)
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| 44 | sub_hash = sub_hash_class[]
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| 45 | assert_equal(sub_hash_class, sub_hash.class)
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| 46 | end
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| 47 |
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[270] | 48 | assert('Hash#merge!') do
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| 49 | a = { 'abc_key' => 'abc_value', 'cba_key' => 'cba_value' }
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| 50 | b = { 'cba_key' => 'XXX', 'xyz_key' => 'xyz_value' }
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| 51 |
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| 52 | result_1 = a.merge! b
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| 53 |
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| 54 | a = { 'abc_key' => 'abc_value', 'cba_key' => 'cba_value' }
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| 55 | result_2 = a.merge!(b) do |key, original, new|
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| 56 | original
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| 57 | end
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| 58 |
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| 59 | assert_equal({'abc_key' => 'abc_value', 'cba_key' => 'XXX',
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| 60 | 'xyz_key' => 'xyz_value' }, result_1)
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| 61 | assert_equal({'abc_key' => 'abc_value', 'cba_key' => 'cba_value',
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| 62 | 'xyz_key' => 'xyz_value' }, result_2)
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| 63 |
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| 64 | assert_raise(TypeError) do
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| 65 | { 'abc_key' => 'abc_value' }.merge! "a"
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| 66 | end
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| 67 | end
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| 68 |
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| 69 | assert('Hash#values_at') do
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| 70 | h = { "cat" => "feline", "dog" => "canine", "cow" => "bovine" }
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| 71 | assert_equal ["bovine", "feline"], h.values_at("cow", "cat")
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| 72 |
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| 73 | keys = []
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| 74 | (0...1000).each { |v| keys.push "#{v}" }
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| 75 | h = Hash.new { |hash,k| hash[k] = k }
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| 76 | assert_equal keys, h.values_at(*keys)
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| 77 | end
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| 78 |
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[439] | 79 | assert('Hash#compact') do
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| 80 | h = { "cat" => "feline", "dog" => nil, "cow" => false }
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| 81 |
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| 82 | assert_equal({ "cat" => "feline", "cow" => false }, h.compact)
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| 83 | assert_equal({ "cat" => "feline", "dog" => nil, "cow" => false }, h)
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| 84 | end
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| 85 |
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| 86 | assert('Hash#compact!') do
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| 87 | h = { "cat" => "feline", "dog" => nil, "cow" => false }
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| 88 |
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| 89 | h.compact!
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| 90 | assert_equal({ "cat" => "feline", "cow" => false }, h)
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| 91 | end
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| 92 |
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[270] | 93 | assert('Hash#fetch') do
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| 94 | h = { "cat" => "feline", "dog" => "canine", "cow" => "bovine" }
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| 95 | assert_equal "feline", h.fetch("cat")
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| 96 | assert_equal "mickey", h.fetch("mouse", "mickey")
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| 97 | assert_equal "minny", h.fetch("mouse"){"minny"}
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| 98 | assert_equal "mouse", h.fetch("mouse"){|k| k}
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| 99 | assert_raise(KeyError) do
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| 100 | h.fetch("gnu")
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| 101 | end
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| 102 | end
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| 103 |
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| 104 | assert("Hash#delete_if") do
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| 105 | base = { 1 => 'one', 2 => false, true => 'true', 'cat' => 99 }
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| 106 | h1 = { 1 => 'one', 2 => false, true => 'true' }
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| 107 | h2 = { 2 => false, 'cat' => 99 }
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| 108 | h3 = { 2 => false }
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| 109 |
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| 110 | h = base.dup
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| 111 | assert_equal(h, h.delete_if { false })
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| 112 | assert_equal({}, h.delete_if { true })
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| 113 |
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| 114 | h = base.dup
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| 115 | assert_equal(h1, h.delete_if {|k,v| k.instance_of?(String) })
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| 116 | assert_equal(h1, h)
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| 117 |
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| 118 | h = base.dup
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| 119 | assert_equal(h2, h.delete_if {|k,v| v.instance_of?(String) })
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| 120 | assert_equal(h2, h)
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| 121 |
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| 122 | h = base.dup
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| 123 | assert_equal(h3, h.delete_if {|k,v| v })
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| 124 | assert_equal(h3, h)
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| 125 |
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| 126 | h = base.dup
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| 127 | n = 0
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| 128 | h.delete_if {|*a|
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| 129 | n += 1
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| 130 | assert_equal(2, a.size)
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| 131 | assert_equal(base[a[0]], a[1])
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| 132 | h.shift
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| 133 | true
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| 134 | }
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| 135 | assert_equal(base.size, n)
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| 136 | end
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| 137 |
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| 138 | assert("Hash#flatten") do
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| 139 | a = {1=> "one", 2 => [2,"two"], 3 => [3, ["three"]]}
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| 140 | assert_equal [1, "one", 2, [2, "two"], 3, [3, ["three"]]], a.flatten
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| 141 | assert_equal [[1, "one"], [2, [2, "two"]], [3, [3, ["three"]]]], a.flatten(0)
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| 142 | assert_equal [1, "one", 2, [2, "two"], 3, [3, ["three"]]], a.flatten(1)
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| 143 | assert_equal [1, "one", 2, 2, "two", 3, 3, ["three"]], a.flatten(2)
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| 144 | assert_equal [1, "one", 2, 2, "two", 3, 3, "three"], a.flatten(3)
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| 145 | end
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| 146 |
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| 147 | assert("Hash#invert") do
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| 148 | h = { 1 => 'one', 2 => 'two', 3 => 'three',
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| 149 | true => 'true', nil => 'nil' }.invert
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| 150 | assert_equal 1, h['one']
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| 151 | assert_equal true, h['true']
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| 152 | assert_equal nil, h['nil']
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| 153 |
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| 154 | h = { 'a' => 1, 'b' => 2, 'c' => 1 }.invert
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| 155 | assert_equal(2, h.length)
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| 156 | assert_include(%w[a c], h[1])
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| 157 | assert_equal('b', h[2])
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| 158 | end
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| 159 |
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[331] | 160 | assert("Hash#invert with sub class") do
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| 161 | sub_hash_class = Class.new(Hash)
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| 162 | sub_hash = sub_hash_class.new
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| 163 | assert_equal(sub_hash_class, sub_hash.invert.class)
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| 164 | end
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| 165 |
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[270] | 166 | assert("Hash#keep_if") do
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| 167 | h = { 1 => 2, 3 => 4, 5 => 6 }
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| 168 | assert_equal({3=>4,5=>6}, h.keep_if {|k, v| k + v >= 7 })
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| 169 | h = { 1 => 2, 3 => 4, 5 => 6 }
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| 170 | assert_equal({ 1 => 2, 3=> 4, 5 =>6} , h.keep_if { true })
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| 171 | end
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| 172 |
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| 173 | assert("Hash#key") do
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| 174 | h = { "a" => 100, "b" => 200, "c" => 300, "d" => 300, nil => 'nil', 'nil' => nil }
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| 175 | assert_equal "b", h.key(200)
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| 176 | assert_equal "c", h.key(300)
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| 177 | assert_nil h.key(999)
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| 178 | assert_nil h.key('nil')
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| 179 | assert_equal 'nil', h.key(nil)
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| 180 | end
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| 181 |
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| 182 | assert("Hash#to_h") do
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| 183 | h = { "a" => 100, "b" => 200 }
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| 184 | assert_equal Hash, h.to_h.class
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| 185 | assert_equal h, h.to_h
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| 186 | end
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| 187 |
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| 188 | assert('Hash#<') do
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| 189 | h1 = {a:1, b:2}
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| 190 | h2 = {a:1, b:2, c:3}
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| 191 |
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| 192 | assert_false(h1 < h1)
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| 193 | assert_true(h1 < h2)
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| 194 | assert_false(h2 < h1)
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| 195 | assert_false(h2 < h2)
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| 196 |
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| 197 | h1 = {a:1}
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| 198 | h2 = {a:2}
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| 199 |
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| 200 | assert_false(h1 < h1)
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| 201 | assert_false(h1 < h2)
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| 202 | assert_false(h2 < h1)
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| 203 | assert_false(h2 < h2)
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| 204 | end
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| 205 |
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| 206 | assert('Hash#<=') do
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| 207 | h1 = {a:1, b:2}
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| 208 | h2 = {a:1, b:2, c:3}
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| 209 |
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| 210 | assert_true(h1 <= h1)
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| 211 | assert_true(h1 <= h2)
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| 212 | assert_false(h2 <= h1)
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| 213 | assert_true(h2 <= h2)
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| 214 |
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| 215 | h1 = {a:1}
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| 216 | h2 = {a:2}
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| 217 |
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| 218 | assert_true(h1 <= h1)
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| 219 | assert_false(h1 <= h2)
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| 220 | assert_false(h2 <= h1)
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| 221 | assert_true(h2 <= h2)
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| 222 | end
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| 223 |
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| 224 | assert('Hash#>=') do
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| 225 | h1 = {a:1, b:2}
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| 226 | h2 = {a:1, b:2, c:3}
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| 227 |
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| 228 | assert_true(h1 >= h1)
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| 229 | assert_false(h1 >= h2)
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| 230 | assert_true(h2 >= h1)
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| 231 | assert_true(h2 >= h2)
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| 232 |
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| 233 | h1 = {a:1}
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| 234 | h2 = {a:2}
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| 235 |
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| 236 | assert_true(h1 >= h1)
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| 237 | assert_false(h1 >= h2)
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| 238 | assert_false(h2 >= h1)
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| 239 | assert_true(h2 >= h2)
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| 240 | end
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| 241 |
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| 242 | assert('Hash#>') do
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| 243 | h1 = {a:1, b:2}
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| 244 | h2 = {a:1, b:2, c:3}
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| 245 |
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| 246 | assert_false(h1 > h1)
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| 247 | assert_false(h1 > h2)
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| 248 | assert_true(h2 > h1)
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| 249 | assert_false(h2 > h2)
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| 250 |
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| 251 | h1 = {a:1}
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| 252 | h2 = {a:2}
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| 253 |
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| 254 | assert_false(h1 > h1)
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| 255 | assert_false(h1 > h2)
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| 256 | assert_false(h2 > h1)
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| 257 | assert_false(h2 > h2)
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| 258 | end
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[331] | 259 |
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| 260 | assert("Hash#dig") do
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| 261 | h = {a:{b:{c:1}}}
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| 262 | assert_equal(1, h.dig(:a, :b, :c))
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| 263 | assert_nil(h.dig(:d))
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| 264 | end
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[439] | 265 |
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| 266 | assert("Hash#transform_keys") do
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| 267 | h = {"1" => 100, "2" => 200}
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| 268 | assert_equal({"1!" => 100, "2!" => 200},
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| 269 | h.transform_keys{|k| k+"!"})
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| 270 | assert_equal({1 => 100, 2 => 200},
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| 271 | h.transform_keys{|k|k.to_i})
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| 272 | assert_same(h, h.transform_keys!{|k|k.to_i})
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| 273 | assert_equal({1 => 100, 2 => 200}, h)
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| 274 | end
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| 275 |
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| 276 | assert("Hash#transform_values") do
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| 277 | h = {a: 1, b: 2, c: 3}
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| 278 | assert_equal({a: 2, b: 5, c: 10},
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| 279 | h.transform_values{|v| v * v + 1})
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| 280 | assert_equal({a: "1", b: "2", c: "3"},
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| 281 | h.transform_values{|v|v.to_s})
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| 282 | assert_same(h, h.transform_values!{|v|v.to_s})
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| 283 | assert_equal({a: "1", b: "2", c: "3"}, h)
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| 284 | end
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| 285 |
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| 286 | assert("Hash#slice") do
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| 287 | h = { a: 100, b: 200, c: 300 }
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| 288 | assert_equal({:a=>100}, h.slice(:a))
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| 289 | assert_equal({:b=>200, :c=>300}, h.slice(:b, :c, :d))
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| 290 | end
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