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# frozen_string_literal: false
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require 'test/unit'
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EnvUtil.suppress_warning {require 'continuation'}
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require 'stringio'
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class TestEnumerable < Test::Unit::TestCase
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def setup
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@obj = Object.new
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class << @obj
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include Enumerable
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def each
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yield 1
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yield 2
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yield 3
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yield 1
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yield 2
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self
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end
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end
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@empty = Object.new
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class << @empty
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attr_reader :block
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include Enumerable
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def each(&block)
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@block = block
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self
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end
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end
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@verbose = $VERBOSE
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$VERBOSE = nil
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end
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def teardown
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$VERBOSE = @verbose
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end
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def test_grep_v
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assert_equal([3], @obj.grep_v(1..2))
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a = []
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@obj.grep_v(2) {|x| a << x }
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assert_equal([1, 3, 1], a)
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a = []
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lambda = ->(x, i) {a << [x, i]}
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@obj.each_with_index.grep_v(proc{|x,i|x!=2}, &lambda)
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assert_equal([[2, 1], [2, 4]], a)
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end
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def test_grep
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assert_equal([1, 2, 1, 2], @obj.grep(1..2))
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a = []
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@obj.grep(2) {|x| a << x }
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assert_equal([2, 2], a)
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bug5801 = '[ruby-dev:45041]'
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@empty.grep(//)
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block = @empty.block
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assert_nothing_raised(bug5801) {100.times {block.call}}
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a = []
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lambda = ->(x, i) {a << [x, i]}
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@obj.each_with_index.grep(proc{|x,i|x==2}, &lambda)
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assert_equal([[2, 1], [2, 4]], a)
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end
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def test_count
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assert_equal(5, @obj.count)
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assert_equal(2, @obj.count(1))
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assert_equal(3, @obj.count {|x| x % 2 == 1 })
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assert_equal(2, @obj.count(1) {|x| x % 2 == 1 })
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assert_raise(ArgumentError) { @obj.count(0, 1) }
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if RUBY_ENGINE == "ruby"
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en = Class.new {
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include Enumerable
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alias :size :count
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def each
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yield 1
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end
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}
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assert_equal(1, en.new.count, '[ruby-core:24794]')
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end
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end
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def test_find
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assert_equal(2, @obj.find {|x| x % 2 == 0 })
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assert_equal(nil, @obj.find {|x| false })
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assert_equal(:foo, @obj.find(proc { :foo }) {|x| false })
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cond = ->(x, i) { x % 2 == 0 }
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assert_equal([2, 1], @obj.each_with_index.find(&cond))
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end
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def test_find_index
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assert_equal(1, @obj.find_index(2))
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assert_equal(1, @obj.find_index {|x| x % 2 == 0 })
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assert_equal(nil, @obj.find_index {|x| false })
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assert_raise(ArgumentError) { @obj.find_index(0, 1) }
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assert_equal(1, @obj.find_index(2) {|x| x == 1 })
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end
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def test_find_all
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assert_equal([1, 3, 1], @obj.find_all {|x| x % 2 == 1 })
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cond = ->(x, i) { x % 2 == 1 }
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assert_equal([[1, 0], [3, 2], [1, 3]], @obj.each_with_index.find_all(&cond))
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end
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def test_reject
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assert_equal([2, 3, 2], @obj.reject {|x| x < 2 })
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cond = ->(x, i) {x < 2}
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assert_equal([[2, 1], [3, 2], [2, 4]], @obj.each_with_index.reject(&cond))
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end
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def test_to_a
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assert_equal([1, 2, 3, 1, 2], @obj.to_a)
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end
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def test_to_a_size_symbol
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sym = Object.new
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class << sym
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include Enumerable
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def each
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self
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end
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def size
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:size
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end
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end
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assert_equal([], sym.to_a)
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end
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def test_to_a_size_infinity
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inf = Object.new
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class << inf
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include Enumerable
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def each
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self
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end
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def size
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Float::INFINITY
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end
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end
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assert_equal([], inf.to_a)
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end
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def test_to_h
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obj = Object.new
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def obj.each(*args)
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yield(*args)
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yield [:key, :value]
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yield :other_key, :other_value
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kvp = Object.new
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def kvp.to_ary
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[:obtained, :via_to_ary]
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end
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yield kvp
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end
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obj.extend Enumerable
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assert_equal({
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:hello => :world,
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:key => :value,
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:other_key => :other_value,
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:obtained => :via_to_ary,
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}, obj.to_h(:hello, :world))
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e = assert_raise(TypeError) {
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obj.to_h(:not_an_array)
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}
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assert_equal "wrong element type Symbol (expected array)", e.message
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e = assert_raise(ArgumentError) {
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obj.to_h([1])
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}
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assert_equal "element has wrong array length (expected 2, was 1)", e.message
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end
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def test_inject
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assert_equal(12, @obj.inject {|z, x| z * x })
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assert_equal(48, @obj.inject {|z, x| z * 2 + x })
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assert_equal(12, @obj.inject(:*))
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assert_equal(24, @obj.inject(2) {|z, x| z * x })
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assert_equal(24, @obj.inject(2, :*) {|z, x| z * x })
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assert_equal(nil, @empty.inject() {9})
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end
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FIXNUM_MIN = RbConfig::Limits['FIXNUM_MIN']
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FIXNUM_MAX = RbConfig::Limits['FIXNUM_MAX']
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def test_inject_array_mul
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assert_equal(nil, [].inject(:*))
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assert_equal(5, [5].inject(:*))
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assert_equal(35, [5, 7].inject(:*))
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assert_equal(3, [].inject(3, :*))
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assert_equal(15, [5].inject(3, :*))
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assert_equal(105, [5, 7].inject(3, :*))
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end
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def assert_float_equal(e, v, msg=nil)
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assert_equal(Float, v.class, msg)
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assert_equal(e, v, msg)
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end
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def test_inject_array_plus
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assert_equal(3, [3].inject(:+))
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assert_equal(8, [3, 5].inject(:+))
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assert_equal(15, [3, 5, 7].inject(:+))
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assert_float_equal(15.0, [3, 5, 7.0].inject(:+))
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assert_equal(2*FIXNUM_MAX, Array.new(2, FIXNUM_MAX).inject(:+))
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assert_equal(2*(FIXNUM_MAX+1), Array.new(2, FIXNUM_MAX+1).inject(:+))
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# assert_equal(10*FIXNUM_MAX, Array.new(10, FIXNUM_MAX).inject(:+))
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assert_equal(0, ([FIXNUM_MAX, 1, -FIXNUM_MAX, -1]*10).inject(:+))
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assert_equal(FIXNUM_MAX*10, ([FIXNUM_MAX+1, -1]*10).inject(:+))
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assert_equal(2*FIXNUM_MIN, Array.new(2, FIXNUM_MIN).inject(:+))
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assert_equal((FIXNUM_MAX+1).to_f, [FIXNUM_MAX, 1, 0.0].inject(:+))
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assert_float_equal(10.0, [3.0, 5].inject(2.0, :+))
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assert_float_equal((FIXNUM_MAX+1).to_f, [0.0, FIXNUM_MAX+1].inject(:+))
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assert_equal(2.0+3.0i, [2.0, 3.0i].inject(:+))
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end
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def test_inject_array_plus_redefined
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assert_separately([], <<-"end;")
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class Integer
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undef :+
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def +(x)
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0
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end
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end
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assert_equal(0, [1,2,3].inject(:+), "[ruby-dev:49510] [Bug#12178]")
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end;
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end
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def test_partition
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assert_equal([[1, 3, 1], [2, 2]], @obj.partition {|x| x % 2 == 1 })
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cond = ->(x, i) { x % 2 == 1 }
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assert_equal([[[1, 0], [3, 2], [1, 3]], [[2, 1], [2, 4]]], @obj.each_with_index.partition(&cond))
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end
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def test_group_by
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h = { 1 => [1, 1], 2 => [2, 2], 3 => [3] }
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assert_equal(h, @obj.group_by {|x| x })
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h = {1=>[[1, 0], [1, 3]], 2=>[[2, 1], [2, 4]], 3=>[[3, 2]]}
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cond = ->(x, i) { x }
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assert_equal(h, @obj.each_with_index.group_by(&cond))
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end
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def test_first
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assert_equal(1, @obj.first)
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assert_equal([1, 2, 3], @obj.first(3))
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assert_nil(@empty.first)
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assert_equal([], @empty.first(10))
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bug5801 = '[ruby-dev:45041]'
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assert_in_out_err([], <<-'end;', [], /unexpected break/, bug5801)
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empty = Object.new
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class << empty
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attr_reader :block
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include Enumerable
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def each(&block)
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@block = block
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self
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end
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end
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empty.first
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empty.block.call
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end;
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end
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def test_sort
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assert_equal([1, 1, 2, 2, 3], @obj.sort)
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assert_equal([3, 2, 2, 1, 1], @obj.sort {|x, y| y <=> x })
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end
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def test_sort_by
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assert_equal([3, 2, 2, 1, 1], @obj.sort_by {|x| -x })
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assert_equal((1..300).to_a.reverse, (1..300).sort_by {|x| -x })
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cond = ->(x, i) { [-x, i] }
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assert_equal([[3, 2], [2, 1], [2, 4], [1, 0], [1, 3]], @obj.each_with_index.sort_by(&cond))
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end
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def test_all
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assert_equal(true, @obj.all? {|x| x <= 3 })
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assert_equal(false, @obj.all? {|x| x < 3 })
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assert_equal(true, @obj.all?)
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assert_equal(false, [true, true, false].all?)
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assert_equal(true, [].all?)
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assert_equal(true, @empty.all?)
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end
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def test_any
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assert_equal(true, @obj.any? {|x| x >= 3 })
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assert_equal(false, @obj.any? {|x| x > 3 })
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assert_equal(true, @obj.any?)
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assert_equal(false, [false, false, false].any?)
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assert_equal(false, [].any?)
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assert_equal(false, @empty.any?)
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end
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def test_one
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assert(@obj.one? {|x| x == 3 })
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assert(!(@obj.one? {|x| x == 1 }))
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assert(!(@obj.one? {|x| x == 4 }))
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assert(%w{ant bear cat}.one? {|word| word.length == 4})
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assert(!(%w{ant bear cat}.one? {|word| word.length > 4}))
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assert(!(%w{ant bear cat}.one? {|word| word.length < 4}))
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assert(!([ nil, true, 99 ].one?))
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assert([ nil, true, false ].one?)
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assert(![].one?)
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assert(!@empty.one?)
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end
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def test_none
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assert(@obj.none? {|x| x == 4 })
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assert(!(@obj.none? {|x| x == 1 }))
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assert(!(@obj.none? {|x| x == 3 }))
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assert(%w{ant bear cat}.none? {|word| word.length == 5})
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assert(!(%w{ant bear cat}.none? {|word| word.length >= 4}))
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assert([].none?)
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assert([nil].none?)
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assert([nil,false].none?)
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assert(![nil,false,true].none?)
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assert(@empty.none?)
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end
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def test_min
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assert_equal(1, @obj.min)
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assert_equal(3, @obj.min {|a,b| b <=> a })
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cond = ->((a, ia), (b, ib)) { (b <=> a).nonzero? or ia <=> ib }
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assert_equal([3, 2], @obj.each_with_index.min(&cond))
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enum = %w(albatross dog horse).to_enum
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assert_equal("albatross", enum.min)
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assert_equal("dog", enum.min {|a,b| a.length <=> b.length })
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assert_equal(1, [3,2,1].to_enum.min)
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assert_equal(%w[albatross dog], enum.min(2))
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assert_equal(%w[dog horse],
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enum.min(2) {|a,b| a.length <=> b.length })
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assert_equal([13, 14], [20, 32, 32, 21, 30, 25, 29, 13, 14].to_enum.min(2))
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assert_equal([2, 4, 6, 7], [2, 4, 8, 6, 7].to_enum.min(4))
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end
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def test_max
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assert_equal(3, @obj.max)
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assert_equal(1, @obj.max {|a,b| b <=> a })
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cond = ->((a, ia), (b, ib)) { (b <=> a).nonzero? or ia <=> ib }
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assert_equal([1, 3], @obj.each_with_index.max(&cond))
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enum = %w(albatross dog horse).to_enum
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assert_equal("horse", enum.max)
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assert_equal("albatross", enum.max {|a,b| a.length <=> b.length })
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assert_equal(1, [3,2,1].to_enum.max{|a,b| b <=> a })
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assert_equal(%w[horse dog], enum.max(2))
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assert_equal(%w[albatross horse],
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enum.max(2) {|a,b| a.length <=> b.length })
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assert_equal([3, 2], [0, 0, 0, 0, 0, 0, 1, 3, 2].to_enum.max(2))
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end
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def test_minmax
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assert_equal([1, 3], @obj.minmax)
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assert_equal([3, 1], @obj.minmax {|a,b| b <=> a })
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ary = %w(albatross dog horse)
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assert_equal(["albatross", "horse"], ary.minmax)
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assert_equal(["dog", "albatross"], ary.minmax {|a,b| a.length <=> b.length })
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assert_equal([1, 3], [2,3,1].minmax)
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assert_equal([3, 1], [2,3,1].minmax {|a,b| b <=> a })
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assert_equal([1, 3], [2,2,3,3,1,1].minmax)
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assert_equal([nil, nil], [].minmax)
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end
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def test_min_by
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assert_equal(3, @obj.min_by {|x| -x })
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cond = ->(x, i) { -x }
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assert_equal([3, 2], @obj.each_with_index.min_by(&cond))
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a = %w(albatross dog horse)
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assert_equal("dog", a.min_by {|x| x.length })
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assert_equal(3, [2,3,1].min_by {|x| -x })
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assert_equal(%w[dog horse], a.min_by(2) {|x| x.length })
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assert_equal([13, 14], [20, 32, 32, 21, 30, 25, 29, 13, 14].min_by(2) {|x| x})
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end
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def test_max_by
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assert_equal(1, @obj.max_by {|x| -x })
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cond = ->(x, i) { -x }
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assert_equal([1, 0], @obj.each_with_index.max_by(&cond))
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a = %w(albatross dog horse)
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assert_equal("albatross", a.max_by {|x| x.length })
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assert_equal(1, [2,3,1].max_by {|x| -x })
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assert_equal(%w[albatross horse], a.max_by(2) {|x| x.length })
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assert_equal([3, 2], [0, 0, 0, 0, 0, 0, 1, 3, 2].max_by(2) {|x| x})
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end
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|
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def test_minmax_by
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assert_equal([3, 1], @obj.minmax_by {|x| -x })
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cond = ->(x, i) { -x }
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assert_equal([[3, 2], [1, 0]], @obj.each_with_index.minmax_by(&cond))
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a = %w(albatross dog horse)
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assert_equal(["dog", "albatross"], a.minmax_by {|x| x.length })
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assert_equal([3, 1], [2,3,1].minmax_by {|x| -x })
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end
|
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|
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def test_member
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assert(@obj.member?(1))
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assert(!(@obj.member?(4)))
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assert([1,2,3].member?(1))
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assert(!([1,2,3].member?(4)))
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end
|
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|
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class Foo
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include Enumerable
|
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def each
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|
yield 1
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|
yield 1,2
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end
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end
|
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|
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def test_each_with_index
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a = []
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@obj.each_with_index {|x, i| a << [x, i] }
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assert_equal([[1,0],[2,1],[3,2],[1,3],[2,4]], a)
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|
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hash = Hash.new
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%w(cat dog wombat).each_with_index do |item, index|
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hash[item] = index
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end
|
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assert_equal({"cat"=>0, "wombat"=>2, "dog"=>1}, hash)
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assert_equal([[1, 0], [[1, 2], 1]], Foo.new.each_with_index.to_a)
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end
|
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|
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def test_each_with_object
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obj = [0, 1]
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ret = (1..10).each_with_object(obj) {|i, memo|
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memo[0] += i
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memo[1] *= i
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}
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assert_same(obj, ret)
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assert_equal([55, 3628800], ret)
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assert_equal([[1, nil], [[1, 2], nil]], Foo.new.each_with_object(nil).to_a)
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end
|
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|
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def test_each_entry
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|
assert_equal([1, 2, 3], [1, 2, 3].each_entry.to_a)
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assert_equal([1, [1, 2]], Foo.new.each_entry.to_a)
|
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a = []
|
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cond = ->(x, i) { a << x }
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@obj.each_with_index.each_entry(&cond)
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assert_equal([1, 2, 3, 1, 2], a)
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end
|
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|
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def test_each_slice
|
|
ary = []
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(1..10).each_slice(3) {|a| ary << a}
|
|
assert_equal([[1, 2, 3], [4, 5, 6], [7, 8, 9], [10]], ary)
|
|
|
|
bug9749 = '[ruby-core:62060] [Bug #9749]'
|
|
ary.clear
|
|
(1..10).each_slice(3, &lambda {|a, *| ary << a})
|
|
assert_equal([[1, 2, 3], [4, 5, 6], [7, 8, 9], [10]], ary, bug9749)
|
|
|
|
ary.clear
|
|
(1..10).each_slice(10) {|a| ary << a}
|
|
assert_equal([[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]], ary)
|
|
|
|
ary.clear
|
|
(1..10).each_slice(11) {|a| ary << a}
|
|
assert_equal([[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]], ary)
|
|
end
|
|
|
|
def test_each_cons
|
|
ary = []
|
|
(1..5).each_cons(3) {|a| ary << a}
|
|
assert_equal([[1, 2, 3], [2, 3, 4], [3, 4, 5]], ary)
|
|
|
|
bug9749 = '[ruby-core:62060] [Bug #9749]'
|
|
ary.clear
|
|
(1..5).each_cons(3, &lambda {|a, *| ary << a})
|
|
assert_equal([[1, 2, 3], [2, 3, 4], [3, 4, 5]], ary, bug9749)
|
|
|
|
ary.clear
|
|
(1..5).each_cons(5) {|a| ary << a}
|
|
assert_equal([[1, 2, 3, 4, 5]], ary)
|
|
|
|
ary.clear
|
|
(1..5).each_cons(6) {|a| ary << a}
|
|
assert_empty(ary)
|
|
end
|
|
|
|
def test_zip
|
|
assert_equal([[1,1],[2,2],[3,3],[1,1],[2,2]], @obj.zip(@obj))
|
|
assert_equal([["a",1],["b",2],["c",3]], ["a", "b", "c"].zip(@obj))
|
|
|
|
a = []
|
|
result = @obj.zip([:a, :b, :c]) {|x,y| a << [x, y] }
|
|
assert_nil result
|
|
assert_equal([[1,:a],[2,:b],[3,:c],[1,nil],[2,nil]], a)
|
|
|
|
a = []
|
|
cond = ->((x, i), y) { a << [x, y, i] }
|
|
@obj.each_with_index.zip([:a, :b, :c], &cond)
|
|
assert_equal([[1,:a,0],[2,:b,1],[3,:c,2],[1,nil,3],[2,nil,4]], a)
|
|
|
|
a = []
|
|
@obj.zip({a: "A", b: "B", c: "C"}) {|x,y| a << [x, y] }
|
|
assert_equal([[1,[:a,"A"]],[2,[:b,"B"]],[3,[:c,"C"]],[1,nil],[2,nil]], a)
|
|
|
|
ary = Object.new
|
|
def ary.to_a; [1, 2]; end
|
|
assert_raise(TypeError) {%w(a b).zip(ary)}
|
|
def ary.each; [3, 4].each{|e|yield e}; end
|
|
assert_equal([[1, 3], [2, 4], [3, nil], [1, nil], [2, nil]], @obj.zip(ary))
|
|
def ary.to_ary; [5, 6]; end
|
|
assert_equal([[1, 5], [2, 6], [3, nil], [1, nil], [2, nil]], @obj.zip(ary))
|
|
obj = eval("class C\u{1f5ff}; self; end").new
|
|
assert_raise_with_message(TypeError, /C\u{1f5ff}/) {(1..1).zip(obj)}
|
|
end
|
|
|
|
def test_take
|
|
assert_equal([1,2,3], @obj.take(3))
|
|
end
|
|
|
|
def test_take_while
|
|
assert_equal([1,2], @obj.take_while {|x| x <= 2})
|
|
cond = ->(x, i) {x <= 2}
|
|
assert_equal([[1, 0], [2, 1]], @obj.each_with_index.take_while(&cond))
|
|
|
|
bug5801 = '[ruby-dev:45040]'
|
|
@empty.take_while {true}
|
|
block = @empty.block
|
|
assert_nothing_raised(bug5801) {100.times {block.call}}
|
|
end
|
|
|
|
def test_drop
|
|
assert_equal([3,1,2], @obj.drop(2))
|
|
end
|
|
|
|
def test_drop_while
|
|
assert_equal([3,1,2], @obj.drop_while {|x| x <= 2})
|
|
cond = ->(x, i) {x <= 2}
|
|
assert_equal([[3, 2], [1, 3], [2, 4]], @obj.each_with_index.drop_while(&cond))
|
|
end
|
|
|
|
def test_cycle
|
|
assert_equal([1,2,3,1,2,1,2,3,1,2], @obj.cycle.take(10))
|
|
a = []
|
|
@obj.cycle(2) {|x| a << x}
|
|
assert_equal([1,2,3,1,2,1,2,3,1,2], a)
|
|
a = []
|
|
cond = ->(x, i) {a << x}
|
|
@obj.each_with_index.cycle(2, &cond)
|
|
assert_equal([1,2,3,1,2,1,2,3,1,2], a)
|
|
end
|
|
|
|
def test_callcc
|
|
assert_raise(RuntimeError) do
|
|
c = nil
|
|
@obj.sort_by {|x| callcc {|c2| c ||= c2 }; x }
|
|
c.call
|
|
end
|
|
|
|
=begin
|
|
assert_raise(RuntimeError) do
|
|
c = nil
|
|
o = Object.new
|
|
class << o; self; end.class_eval do
|
|
define_method(:<=>) do |x|
|
|
callcc {|c2| c ||= c2 }
|
|
0
|
|
end
|
|
end
|
|
[o, o].sort_by {|x| x }
|
|
c.call
|
|
end
|
|
=end
|
|
assert_raise(RuntimeError) do
|
|
c = nil
|
|
o = Object.new
|
|
class << o; self; end.class_eval do
|
|
define_method(:<=>) do |x|
|
|
callcc {|c2| c ||= c2 }
|
|
0
|
|
end
|
|
end
|
|
[o, o, o].sort_by {|x| x }
|
|
c.call
|
|
end
|
|
end
|
|
|
|
def test_reverse_each
|
|
assert_equal([2,1,3,2,1], @obj.reverse_each.to_a)
|
|
end
|
|
|
|
def test_chunk
|
|
e = [].chunk {|elt| true }
|
|
assert_equal([], e.to_a)
|
|
|
|
e = @obj.chunk {|elt| elt & 2 == 0 ? false : true }
|
|
assert_equal([[false, [1]], [true, [2, 3]], [false, [1]], [true, [2]]], e.to_a)
|
|
|
|
e = @obj.chunk {|elt| elt < 3 ? :_alone : true }
|
|
assert_equal([[:_alone, [1]],
|
|
[:_alone, [2]],
|
|
[true, [3]],
|
|
[:_alone, [1]],
|
|
[:_alone, [2]]], e.to_a)
|
|
|
|
e = @obj.chunk {|elt| elt == 3 ? :_separator : true }
|
|
assert_equal([[true, [1, 2]],
|
|
[true, [1, 2]]], e.to_a)
|
|
|
|
e = @obj.chunk {|elt| elt == 3 ? nil : true }
|
|
assert_equal([[true, [1, 2]],
|
|
[true, [1, 2]]], e.to_a)
|
|
|
|
e = @obj.chunk {|elt| :_foo }
|
|
assert_raise(RuntimeError) { e.to_a }
|
|
|
|
e = @obj.chunk.with_index {|elt, i| elt - i }
|
|
assert_equal([[1, [1, 2, 3]],
|
|
[-2, [1, 2]]], e.to_a)
|
|
|
|
assert_equal(4, (0..3).chunk.size)
|
|
end
|
|
|
|
def test_slice_before
|
|
e = [].slice_before {|elt| true }
|
|
assert_equal([], e.to_a)
|
|
|
|
e = @obj.slice_before {|elt| elt.even? }
|
|
assert_equal([[1], [2,3,1], [2]], e.to_a)
|
|
|
|
e = @obj.slice_before {|elt| elt.odd? }
|
|
assert_equal([[1,2], [3], [1,2]], e.to_a)
|
|
|
|
ss = %w[abc defg h ijk l mno pqr st u vw xy z]
|
|
assert_equal([%w[abc defg h], %w[ijk l], %w[mno], %w[pqr st u vw xy z]],
|
|
ss.slice_before(/\A...\z/).to_a)
|
|
assert_warning("") {ss.slice_before(/\A...\z/).to_a}
|
|
end
|
|
|
|
def test_slice_after0
|
|
assert_raise(ArgumentError) { [].slice_after }
|
|
end
|
|
|
|
def test_slice_after1
|
|
e = [].slice_after {|a| flunk "should not be called" }
|
|
assert_equal([], e.to_a)
|
|
|
|
e = [1,2].slice_after(1)
|
|
assert_equal([[1], [2]], e.to_a)
|
|
|
|
e = [1,2].slice_after(3)
|
|
assert_equal([[1, 2]], e.to_a)
|
|
|
|
[true, false].each {|b|
|
|
block_results = [true, b]
|
|
e = [1,2].slice_after {|a| block_results.shift }
|
|
assert_equal([[1], [2]], e.to_a)
|
|
assert_equal([], block_results)
|
|
|
|
block_results = [false, b]
|
|
e = [1,2].slice_after {|a| block_results.shift }
|
|
assert_equal([[1, 2]], e.to_a)
|
|
assert_equal([], block_results)
|
|
}
|
|
end
|
|
|
|
def test_slice_after_both_pattern_and_block
|
|
assert_raise(ArgumentError) { [].slice_after(1) {|a| true } }
|
|
end
|
|
|
|
def test_slice_after_continuation_lines
|
|
lines = ["foo\n", "bar\\\n", "baz\n", "\n", "qux\n"]
|
|
e = lines.slice_after(/[^\\]\n\z/)
|
|
assert_equal([["foo\n"], ["bar\\\n", "baz\n"], ["\n", "qux\n"]], e.to_a)
|
|
end
|
|
|
|
def test_slice_before_empty_line
|
|
lines = ["foo", "", "bar"]
|
|
e = lines.slice_after(/\A\s*\z/)
|
|
assert_equal([["foo", ""], ["bar"]], e.to_a)
|
|
end
|
|
|
|
def test_slice_when_0
|
|
e = [].slice_when {|a, b| flunk "should not be called" }
|
|
assert_equal([], e.to_a)
|
|
end
|
|
|
|
def test_slice_when_1
|
|
e = [1].slice_when {|a, b| flunk "should not be called" }
|
|
assert_equal([[1]], e.to_a)
|
|
end
|
|
|
|
def test_slice_when_2
|
|
e = [1,2].slice_when {|a,b|
|
|
assert_equal(1, a)
|
|
assert_equal(2, b)
|
|
true
|
|
}
|
|
assert_equal([[1], [2]], e.to_a)
|
|
|
|
e = [1,2].slice_when {|a,b|
|
|
assert_equal(1, a)
|
|
assert_equal(2, b)
|
|
false
|
|
}
|
|
assert_equal([[1, 2]], e.to_a)
|
|
end
|
|
|
|
def test_slice_when_3
|
|
block_invocations = [
|
|
lambda {|a, b|
|
|
assert_equal(1, a)
|
|
assert_equal(2, b)
|
|
true
|
|
},
|
|
lambda {|a, b|
|
|
assert_equal(2, a)
|
|
assert_equal(3, b)
|
|
false
|
|
}
|
|
]
|
|
e = [1,2,3].slice_when {|a,b|
|
|
block_invocations.shift.call(a, b)
|
|
}
|
|
assert_equal([[1], [2, 3]], e.to_a)
|
|
assert_equal([], block_invocations)
|
|
end
|
|
|
|
def test_slice_when_noblock
|
|
assert_raise(ArgumentError) { [].slice_when }
|
|
end
|
|
|
|
def test_slice_when_contiguously_increasing_integers
|
|
e = [1,4,9,10,11,12,15,16,19,20,21].slice_when {|i, j| i+1 != j }
|
|
assert_equal([[1], [4], [9,10,11,12], [15,16], [19,20,21]], e.to_a)
|
|
end
|
|
|
|
def test_chunk_while_contiguously_increasing_integers
|
|
e = [1,4,9,10,11,12,15,16,19,20,21].chunk_while {|i, j| i+1 == j }
|
|
assert_equal([[1], [4], [9,10,11,12], [15,16], [19,20,21]], e.to_a)
|
|
end
|
|
|
|
def test_detect
|
|
@obj = ('a'..'z')
|
|
assert_equal('c', @obj.detect {|x| x == 'c' })
|
|
|
|
proc = Proc.new {|x| x == 'c' }
|
|
assert_equal('c', @obj.detect(&proc))
|
|
|
|
lambda = ->(x) { x == 'c' }
|
|
assert_equal('c', @obj.detect(&lambda))
|
|
|
|
assert_equal(['c',2], @obj.each_with_index.detect {|x, i| x == 'c' })
|
|
|
|
proc2 = Proc.new {|x, i| x == 'c' }
|
|
assert_equal(['c',2], @obj.each_with_index.detect(&proc2))
|
|
|
|
bug9605 = '[ruby-core:61340]'
|
|
lambda2 = ->(x, i) { x == 'c' }
|
|
assert_equal(['c',2], @obj.each_with_index.detect(&lambda2), bug9605)
|
|
end
|
|
|
|
def test_select
|
|
@obj = ('a'..'z')
|
|
assert_equal(['c'], @obj.select {|x| x == 'c' })
|
|
|
|
proc = Proc.new {|x| x == 'c' }
|
|
assert_equal(['c'], @obj.select(&proc))
|
|
|
|
lambda = ->(x) { x == 'c' }
|
|
assert_equal(['c'], @obj.select(&lambda))
|
|
|
|
assert_equal([['c',2]], @obj.each_with_index.select {|x, i| x == 'c' })
|
|
|
|
proc2 = Proc.new {|x, i| x == 'c' }
|
|
assert_equal([['c',2]], @obj.each_with_index.select(&proc2))
|
|
|
|
bug9605 = '[ruby-core:61340]'
|
|
lambda2 = ->(x, i) { x == 'c' }
|
|
assert_equal([['c',2]], @obj.each_with_index.select(&lambda2), bug9605)
|
|
end
|
|
|
|
def test_map
|
|
@obj = ('a'..'e')
|
|
assert_equal(['A', 'B', 'C', 'D', 'E'], @obj.map {|x| x.upcase })
|
|
|
|
proc = Proc.new {|x| x.upcase }
|
|
assert_equal(['A', 'B', 'C', 'D', 'E'], @obj.map(&proc))
|
|
|
|
lambda = ->(x) { x.upcase }
|
|
assert_equal(['A', 'B', 'C', 'D', 'E'], @obj.map(&lambda))
|
|
|
|
assert_equal([['A',0], ['B',1], ['C',2], ['D',3], ['E',4]],
|
|
@obj.each_with_index.map {|x, i| [x.upcase, i] })
|
|
|
|
proc2 = Proc.new {|x, i| [x.upcase, i] }
|
|
assert_equal([['A',0], ['B',1], ['C',2], ['D',3], ['E',4]],
|
|
@obj.each_with_index.map(&proc2))
|
|
|
|
lambda2 = ->(x, i) { [x.upcase, i] }
|
|
assert_equal([['A',0], ['B',1], ['C',2], ['D',3], ['E',4]],
|
|
@obj.each_with_index.map(&lambda2))
|
|
end
|
|
|
|
def test_flat_map
|
|
@obj = [[1,2], [3,4]]
|
|
assert_equal([2,4,6,8], @obj.flat_map {|i| i.map{|j| j*2} })
|
|
|
|
proc = Proc.new {|i| i.map{|j| j*2} }
|
|
assert_equal([2,4,6,8], @obj.flat_map(&proc))
|
|
|
|
lambda = ->(i) { i.map{|j| j*2} }
|
|
assert_equal([2,4,6,8], @obj.flat_map(&lambda))
|
|
|
|
assert_equal([[1,2],0,[3,4],1],
|
|
@obj.each_with_index.flat_map {|x, i| [x,i] })
|
|
|
|
proc2 = Proc.new {|x, i| [x,i] }
|
|
assert_equal([[1,2],0,[3,4],1],
|
|
@obj.each_with_index.flat_map(&proc2))
|
|
|
|
lambda2 = ->(x, i) { [x,i] }
|
|
assert_equal([[1,2],0,[3,4],1],
|
|
@obj.each_with_index.flat_map(&lambda2))
|
|
end
|
|
|
|
def assert_typed_equal(e, v, cls, msg=nil)
|
|
assert_kind_of(cls, v, msg)
|
|
assert_equal(e, v, msg)
|
|
end
|
|
|
|
def assert_int_equal(e, v, msg=nil)
|
|
assert_typed_equal(e, v, Integer, msg)
|
|
end
|
|
|
|
def assert_rational_equal(e, v, msg=nil)
|
|
assert_typed_equal(e, v, Rational, msg)
|
|
end
|
|
|
|
def assert_float_equal(e, v, msg=nil)
|
|
assert_typed_equal(e, v, Float, msg)
|
|
end
|
|
|
|
def assert_complex_equal(e, v, msg=nil)
|
|
assert_typed_equal(e, v, Complex, msg)
|
|
end
|
|
|
|
def test_sum
|
|
class << (enum = Object.new)
|
|
include Enumerable
|
|
def each
|
|
yield 3
|
|
yield 5
|
|
yield 7
|
|
end
|
|
end
|
|
assert_int_equal(15, enum.sum)
|
|
|
|
assert_int_equal(0, [].each.sum)
|
|
assert_int_equal(3, [3].each.sum)
|
|
assert_int_equal(8, [3, 5].each.sum)
|
|
assert_int_equal(15, [3, 5, 7].each.sum)
|
|
assert_rational_equal(8r, [3, 5r].each.sum)
|
|
assert_float_equal(15.0, [3, 5, 7.0].each.sum)
|
|
assert_float_equal(15.0, [3, 5r, 7.0].each.sum)
|
|
assert_complex_equal(8r + 1i, [3, 5r, 1i].each.sum)
|
|
assert_complex_equal(15.0 + 1i, [3, 5r, 7.0, 1i].each.sum)
|
|
|
|
# assert_int_equal(2*FIXNUM_MAX, Array.new(2, FIXNUM_MAX).each.sum)
|
|
assert_int_equal(2*(FIXNUM_MAX+1), Array.new(2, FIXNUM_MAX+1).each.sum)
|
|
# assert_int_equal(10*FIXNUM_MAX, Array.new(10, FIXNUM_MAX).each.sum)
|
|
# assert_int_equal(0, ([FIXNUM_MAX, 1, -FIXNUM_MAX, -1]*10).each.sum)
|
|
assert_int_equal(FIXNUM_MAX*10, ([FIXNUM_MAX+1, -1]*10).each.sum)
|
|
# assert_int_equal(2*FIXNUM_MIN, Array.new(2, FIXNUM_MIN).each.sum)
|
|
|
|
assert_float_equal(0.0, [].each.sum(0.0))
|
|
assert_float_equal(3.0, [3].each.sum(0.0))
|
|
assert_float_equal(3.5, [3].each.sum(0.5))
|
|
assert_float_equal(8.5, [3.5, 5].each.sum)
|
|
assert_float_equal(10.5, [2, 8.5].each.sum)
|
|
# assert_float_equal((FIXNUM_MAX+1).to_f, [FIXNUM_MAX, 1, 0.0].each.sum)
|
|
assert_float_equal((FIXNUM_MAX+1).to_f, [0.0, FIXNUM_MAX+1].each.sum)
|
|
|
|
assert_rational_equal(3/2r, [1/2r, 1].each.sum)
|
|
assert_rational_equal(5/6r, [1/2r, 1/3r].each.sum)
|
|
|
|
assert_equal(2.0+3.0i, [2.0, 3.0i].each.sum)
|
|
|
|
assert_int_equal(13, [1, 2].each.sum(10))
|
|
assert_int_equal(16, [1, 2].each.sum(10) {|v| v * 2 })
|
|
|
|
yielded = []
|
|
three = SimpleDelegator.new(3)
|
|
ary = [1, 2.0, three]
|
|
assert_float_equal(12.0, ary.each.sum {|x| yielded << x; x * 2 })
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assert_equal(ary, yielded)
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|
|
|
assert_raise(TypeError) { [Object.new].each.sum }
|
|
|
|
large_number = 100000000
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|
small_number = 1e-9
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|
until (large_number + small_number) == large_number
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|
small_number /= 10
|
|
end
|
|
assert_float_equal(large_number+(small_number*10), [large_number, *[small_number]*10].each.sum)
|
|
assert_float_equal(large_number+(small_number*10), [large_number/1r, *[small_number]*10].each.sum)
|
|
assert_float_equal(large_number+(small_number*11), [small_number, large_number/1r, *[small_number]*10].each.sum)
|
|
assert_float_equal(small_number, [large_number, small_number, -large_number].each.sum)
|
|
|
|
assert_equal("abc", ["a", "b", "c"].each.sum(""))
|
|
assert_equal([1, [2], 3], [[1], [[2]], [3]].each.sum([]))
|
|
|
|
assert_separately(%w[-rmathn], <<-EOS, ignore_stderr: true)
|
|
assert_equal(6, [1r, 2, 3r].each.sum)
|
|
EOS
|
|
end
|
|
|
|
def test_hash_sum
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|
histogram = { 1 => 6, 2 => 4, 3 => 3, 4 => 7, 5 => 5, 6 => 4 }
|
|
assert_equal(100, histogram.sum {|v, n| v * n })
|
|
end
|
|
|
|
def test_range_sum
|
|
assert_int_equal(55, (1..10).sum)
|
|
assert_float_equal(55.0, (1..10).sum(0.0))
|
|
assert_int_equal(90, (5..10).sum {|v| v * 2 })
|
|
assert_float_equal(90.0, (5..10).sum(0.0) {|v| v * 2 })
|
|
assert_int_equal(0, (2..0).sum)
|
|
assert_int_equal(5, (2..0).sum(5))
|
|
assert_int_equal(2, (2..2).sum)
|
|
assert_int_equal(42, (2...2).sum(42))
|
|
end
|
|
|
|
def test_uniq
|
|
src = [1, 1, 1, 1, 2, 2, 3, 4, 5, 6]
|
|
assert_equal([1, 2, 3, 4, 5, 6], src.uniq.to_a)
|
|
olympics = {
|
|
1896 => 'Athens',
|
|
1900 => 'Paris',
|
|
1904 => 'Chicago',
|
|
1906 => 'Athens',
|
|
1908 => 'Rome',
|
|
}
|
|
assert_equal([[1896, "Athens"], [1900, "Paris"], [1904, "Chicago"], [1908, "Rome"]],
|
|
olympics.uniq{|k,v| v})
|
|
assert_equal([1, 2, 3, 4, 5, 10], (1..100).uniq{|x| (x**2) % 10 }.first(6))
|
|
end
|
|
end
|