mirror of
https://github.com/mruby/mruby
synced 2026-06-08 16:11:16 +00:00
KOBAYASHI Shuji
97 lines
2.2 KiB
Ruby
97 lines
2.2 KiB
Ruby
##
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# Random Test
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assert("Random.new") do
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r1 = Random.new(123)
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r2 = Random.new(123)
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r3 = Random.new(124)
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assert_equal(r1.rand, r2.rand)
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assert_not_equal(r1.rand, r3.rand)
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end
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assert("Kernel.srand") do
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srand(234)
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r1 = rand
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srand(234)
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r2 = rand
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srand(235)
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r3 = rand
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assert_equal(r1, r2)
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assert_not_equal(r1, r3)
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end
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assert("Random.srand") do
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Random.srand(345)
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r1 = rand
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srand(345)
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r2 = Random.rand
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Random.srand(346)
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r3 = rand
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assert_equal(r1, r2)
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assert_not_equal(r1, r3)
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end
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assert("return class of Kernel.rand") do
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assert_kind_of(Fixnum, rand(3))
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assert_kind_of(Fixnum, rand(1.5))
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assert_kind_of(Float, rand)
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assert_kind_of(Float, rand(0.5))
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end
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assert("Array#shuffle") do
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ary = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
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orig = ary.dup
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shuffled = ary.shuffle
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assert_equal(orig, ary)
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assert_not_equal(ary, shuffled)
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assert_equal(ary.size, shuffled.size)
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shuffled.each do |x|
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assert_include(ary, x)
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ary.delete(x)
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end
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end
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assert('Array#shuffle!') do
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ary = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
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orig = ary.dup
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assert_same(ary, ary.shuffle!)
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assert_not_equal(orig, ary)
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assert_equal(orig.size, ary.size)
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ary.each do |x|
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assert_include(orig, x)
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orig.delete(x)
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end
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end
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assert("Array#shuffle(random)") do
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assert_raise(TypeError) do
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# this will cause an exception due to the wrong argument
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[1, 2].shuffle "Not a Random instance"
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end
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# verify that the same seed causes the same results
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ary = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
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shuffled1 = ary.shuffle Random.new 345
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shuffled2 = ary.shuffle Random.new 345
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shuffled3 = ary.shuffle Random.new 346
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assert_equal(shuffled1, shuffled2)
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assert_not_equal(shuffled1, shuffled3)
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end
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assert('Array#shuffle!(random)') do
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assert_raise(TypeError) do
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# this will cause an exception due to the wrong argument
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[1, 2].shuffle! "Not a Random instance"
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end
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# verify that the same seed causes the same results
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ary1 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
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ary1.shuffle! Random.new 345
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ary2 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
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ary2.shuffle! Random.new 345
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ary3 = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
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ary3.shuffle! Random.new 346
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assert_equal(ary1, ary2)
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assert_not_equal(ary1, ary3)
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end
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