1 | ##
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2 | # Range(Ext) Test
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3 |
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4 | assert('Range#cover?') do
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5 | assert_true ("a".."z").cover?("c")
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6 | assert_true !("a".."z").cover?("5")
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7 | assert_true ("a".."z").cover?("cc")
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8 | end
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9 |
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10 | assert('Range#first') do
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11 | assert_equal 10, (10..20).first
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12 | assert_equal [10, 11, 12], (10..20).first(3)
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13 | assert_equal [0, 1, 2], (0..Float::INFINITY).first(3)
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14 | end
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15 |
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16 | assert('Range#last') do
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17 | assert_equal 20, (10..20).last
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18 | assert_equal 20, (10...20).last
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19 | assert_equal [18, 19, 20], (10..20).last(3)
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20 | assert_equal [17, 18, 19], (10...20).last(3)
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21 | end
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22 |
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23 | assert('Range#size') do
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24 | assert_equal 42, (1..42).size
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25 | assert_equal 41, (1...42).size
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26 | assert_equal 6, (1...6.3).size
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27 | assert_equal 5, (1...6.0).size
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28 | assert_equal 5, (1.1...6).size
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29 | assert_equal 15, (1.0..15.9).size
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30 | assert_equal Float::INFINITY, (0..Float::INFINITY).size
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31 | assert_nil ('a'..'z').size
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32 | end
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