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https://github.com/mruby/mruby
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dearblue
77 lines
2.0 KiB
Ruby
77 lines
2.0 KiB
Ruby
##
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# Enumerator::Chain test
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assert("Enumerable#chain") do
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a = []
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b = {}
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c = Object.new # not has #each method
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assert_kind_of Enumerator::Chain, a.chain
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assert_kind_of Enumerator::Chain, a.chain(b)
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assert_kind_of Enumerator::Chain, a.chain(b, c)
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assert_raise(NoMethodError) { c.chain }
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end
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assert("Enumerable#+") do
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a = [].each
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b = {}.reverse_each
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c = Object.new # not has #each method
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assert_kind_of Enumerator::Chain, a + b
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assert_kind_of Enumerator::Chain, a + c
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assert_kind_of Enumerator::Chain, b + a
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assert_kind_of Enumerator::Chain, b + c
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assert_raise(NoMethodError) { c + a }
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end
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assert("Enumerator.new") do
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a = []
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b = {}
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c = Object.new # not has #each method
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assert_kind_of Enumerator::Chain, Enumerator::Chain.new
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assert_kind_of Enumerator::Chain, Enumerator::Chain.new(a, a)
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assert_kind_of Enumerator::Chain, Enumerator::Chain.new(a, b)
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assert_kind_of Enumerator::Chain, Enumerator::Chain.new(a, c)
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assert_kind_of Enumerator::Chain, Enumerator::Chain.new(b, a)
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assert_kind_of Enumerator::Chain, Enumerator::Chain.new(b, b)
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assert_kind_of Enumerator::Chain, Enumerator::Chain.new(b, c)
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assert_kind_of Enumerator::Chain, Enumerator::Chain.new(c, a)
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end
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assert("Enumerator::Chain#each") do
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a = [1, 2, 3]
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aa = a.chain(a)
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assert_kind_of Enumerator, aa.each
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assert_equal [1, 2, 3, 1, 2, 3], aa.each.to_a
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aa = a.chain(a.reverse_each)
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assert_kind_of Enumerator, aa.each
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assert_equal [1, 2, 3, 3, 2, 1], aa.each.to_a
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aa = a.chain(a.reverse_each, a)
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assert_kind_of Enumerator, aa.each
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assert_equal [1, 2, 3, 3, 2, 1, 1, 2, 3], aa.each.to_a
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aa = a.chain(Object.new)
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assert_kind_of Enumerator, aa.each
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assert_raise(NoMethodError) { aa.each.to_a }
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end
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assert("Enumerator::Chain#size") do
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a = [1, 2, 3]
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aa = a.chain(a)
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assert_equal 6, aa.size
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aa = a.chain(a.reverse_each)
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assert_nil aa.size
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aa = a.chain(a.reverse_each, a)
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assert_nil aa.size
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aa = a.chain(Object.new)
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assert_nil aa.size
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end
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