mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
78a59da8bc
each_with_object to enum.c. * enum.c (each_slice_i): convert multiple values from yield into an array. * enum.c (each_cons_i): ditto. * enum.c (each_with_object_i): ditto. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26546 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
419 lines
11 KiB
Ruby
419 lines
11 KiB
Ruby
require 'test/unit'
|
|
require 'continuation'
|
|
|
|
class TestEnumerable < Test::Unit::TestCase
|
|
def setup
|
|
@obj = Object.new
|
|
class << @obj
|
|
include Enumerable
|
|
def each
|
|
yield 1
|
|
yield 2
|
|
yield 3
|
|
yield 1
|
|
yield 2
|
|
end
|
|
end
|
|
@verbose = $VERBOSE
|
|
$VERBOSE = nil
|
|
end
|
|
|
|
def teardown
|
|
$VERBOSE = @verbose
|
|
end
|
|
|
|
def test_grep
|
|
assert_equal([1, 2, 1, 2], @obj.grep(1..2))
|
|
a = []
|
|
@obj.grep(2) {|x| a << x }
|
|
assert_equal([2, 2], a)
|
|
end
|
|
|
|
def test_count
|
|
assert_equal(5, @obj.count)
|
|
assert_equal(2, @obj.count(1))
|
|
assert_equal(3, @obj.count {|x| x % 2 == 1 })
|
|
assert_equal(2, @obj.count(1) {|x| x % 2 == 1 })
|
|
assert_raise(ArgumentError) { @obj.count(0, 1) }
|
|
|
|
if RUBY_ENGINE == "ruby"
|
|
en = Class.new {
|
|
include Enumerable
|
|
alias :size :count
|
|
def each
|
|
yield 1
|
|
end
|
|
}
|
|
assert_equal(1, en.new.count, '[ruby-core:24794]')
|
|
end
|
|
end
|
|
|
|
def test_find
|
|
assert_equal(2, @obj.find {|x| x % 2 == 0 })
|
|
assert_equal(nil, @obj.find {|x| false })
|
|
assert_equal(:foo, @obj.find(proc { :foo }) {|x| false })
|
|
end
|
|
|
|
def test_find_index
|
|
assert_equal(1, @obj.find_index(2))
|
|
assert_equal(1, @obj.find_index {|x| x % 2 == 0 })
|
|
assert_equal(nil, @obj.find_index {|x| false })
|
|
assert_raise(ArgumentError) { @obj.find_index(0, 1) }
|
|
assert_equal(1, @obj.find_index(2) {|x| x == 1 })
|
|
end
|
|
|
|
def test_find_all
|
|
assert_equal([1, 3, 1], @obj.find_all {|x| x % 2 == 1 })
|
|
end
|
|
|
|
def test_reject
|
|
assert_equal([2, 3, 2], @obj.reject {|x| x < 2 })
|
|
end
|
|
|
|
def test_to_a
|
|
assert_equal([1, 2, 3, 1, 2], @obj.to_a)
|
|
end
|
|
|
|
def test_inject
|
|
assert_equal(12, @obj.inject {|z, x| z * x })
|
|
assert_equal(48, @obj.inject {|z, x| z * 2 + x })
|
|
assert_equal(12, @obj.inject(:*))
|
|
assert_equal(24, @obj.inject(2) {|z, x| z * x })
|
|
assert_equal(24, @obj.inject(2, :*) {|z, x| z * x })
|
|
end
|
|
|
|
def test_partition
|
|
assert_equal([[1, 3, 1], [2, 2]], @obj.partition {|x| x % 2 == 1 })
|
|
end
|
|
|
|
def test_group_by
|
|
h = { 1 => [1, 1], 2 => [2, 2], 3 => [3] }
|
|
assert_equal(h, @obj.group_by {|x| x })
|
|
end
|
|
|
|
def test_first
|
|
assert_equal(1, @obj.first)
|
|
assert_equal([1, 2, 3], @obj.first(3))
|
|
end
|
|
|
|
def test_sort
|
|
assert_equal([1, 1, 2, 2, 3], @obj.sort)
|
|
end
|
|
|
|
def test_sort_by
|
|
assert_equal([3, 2, 2, 1, 1], @obj.sort_by {|x| -x })
|
|
end
|
|
|
|
def test_all
|
|
assert_equal(true, @obj.all? {|x| x <= 3 })
|
|
assert_equal(false, @obj.all? {|x| x < 3 })
|
|
assert_equal(true, @obj.all?)
|
|
assert_equal(false, [true, true, false].all?)
|
|
end
|
|
|
|
def test_any
|
|
assert_equal(true, @obj.any? {|x| x >= 3 })
|
|
assert_equal(false, @obj.any? {|x| x > 3 })
|
|
assert_equal(true, @obj.any?)
|
|
assert_equal(false, [false, false, false].any?)
|
|
end
|
|
|
|
def test_one
|
|
assert(@obj.one? {|x| x == 3 })
|
|
assert(!(@obj.one? {|x| x == 1 }))
|
|
assert(!(@obj.one? {|x| x == 4 }))
|
|
assert(%w{ant bear cat}.one? {|word| word.length == 4})
|
|
assert(!(%w{ant bear cat}.one? {|word| word.length > 4}))
|
|
assert(!(%w{ant bear cat}.one? {|word| word.length < 4}))
|
|
assert(!([ nil, true, 99 ].one?))
|
|
assert([ nil, true, false ].one?)
|
|
end
|
|
|
|
def test_none
|
|
assert(@obj.none? {|x| x == 4 })
|
|
assert(!(@obj.none? {|x| x == 1 }))
|
|
assert(!(@obj.none? {|x| x == 3 }))
|
|
assert(%w{ant bear cat}.none? {|word| word.length == 5})
|
|
assert(!(%w{ant bear cat}.none? {|word| word.length >= 4}))
|
|
assert([].none?)
|
|
assert([nil].none?)
|
|
assert([nil,false].none?)
|
|
end
|
|
|
|
def test_min
|
|
assert_equal(1, @obj.min)
|
|
assert_equal(3, @obj.min {|a,b| b <=> a })
|
|
ary = %w(albatross dog horse)
|
|
assert_equal("albatross", ary.min)
|
|
assert_equal("dog", ary.min {|a,b| a.length <=> b.length })
|
|
assert_equal(1, [3,2,1].min)
|
|
end
|
|
|
|
def test_max
|
|
assert_equal(3, @obj.max)
|
|
assert_equal(1, @obj.max {|a,b| b <=> a })
|
|
ary = %w(albatross dog horse)
|
|
assert_equal("horse", ary.max)
|
|
assert_equal("albatross", ary.max {|a,b| a.length <=> b.length })
|
|
assert_equal(1, [3,2,1].max{|a,b| b <=> a })
|
|
end
|
|
|
|
def test_minmax
|
|
assert_equal([1, 3], @obj.minmax)
|
|
assert_equal([3, 1], @obj.minmax {|a,b| b <=> a })
|
|
ary = %w(albatross dog horse)
|
|
assert_equal(["albatross", "horse"], ary.minmax)
|
|
assert_equal(["dog", "albatross"], ary.minmax {|a,b| a.length <=> b.length })
|
|
assert_equal([1, 3], [2,3,1].minmax)
|
|
assert_equal([3, 1], [2,3,1].minmax {|a,b| b <=> a })
|
|
assert_equal([1, 3], [2,2,3,3,1,1].minmax)
|
|
end
|
|
|
|
def test_min_by
|
|
assert_equal(3, @obj.min_by {|x| -x })
|
|
a = %w(albatross dog horse)
|
|
assert_equal("dog", a.min_by {|x| x.length })
|
|
assert_equal(3, [2,3,1].min_by {|x| -x })
|
|
end
|
|
|
|
def test_max_by
|
|
assert_equal(1, @obj.max_by {|x| -x })
|
|
a = %w(albatross dog horse)
|
|
assert_equal("albatross", a.max_by {|x| x.length })
|
|
assert_equal(1, [2,3,1].max_by {|x| -x })
|
|
end
|
|
|
|
def test_minmax_by
|
|
assert_equal([3, 1], @obj.minmax_by {|x| -x })
|
|
a = %w(albatross dog horse)
|
|
assert_equal(["dog", "albatross"], a.minmax_by {|x| x.length })
|
|
assert_equal([3, 1], [2,3,1].minmax_by {|x| -x })
|
|
end
|
|
|
|
def test_member
|
|
assert(@obj.member?(1))
|
|
assert(!(@obj.member?(4)))
|
|
assert([1,2,3].member?(1))
|
|
assert(!([1,2,3].member?(4)))
|
|
end
|
|
|
|
class Foo
|
|
include Enumerable
|
|
def each
|
|
yield 1
|
|
yield 1,2
|
|
end
|
|
end
|
|
|
|
def test_each_with_index
|
|
a = []
|
|
@obj.each_with_index {|x, i| a << [x, i] }
|
|
assert_equal([[1,0],[2,1],[3,2],[1,3],[2,4]], a)
|
|
|
|
hash = Hash.new
|
|
%w(cat dog wombat).each_with_index do |item, index|
|
|
hash[item] = index
|
|
end
|
|
assert_equal({"cat"=>0, "wombat"=>2, "dog"=>1}, hash)
|
|
assert_equal([[1, 0], [[1, 2], 1]], Foo.new.each_with_index.to_a)
|
|
end
|
|
|
|
def test_each_with_object
|
|
obj = [0, 1]
|
|
ret = (1..10).each_with_object(obj) {|i, memo|
|
|
memo[0] += i
|
|
memo[1] *= i
|
|
}
|
|
assert_same(obj, ret)
|
|
assert_equal([55, 3628800], ret)
|
|
assert_equal([[1, nil], [[1, 2], nil]], Foo.new.each_with_object(nil).to_a)
|
|
end
|
|
|
|
def test_each_entry
|
|
assert_equal([1, 2, 3], [1, 2, 3].each_entry.to_a)
|
|
assert_equal([1, [1, 2]], Foo.new.each_entry.to_a)
|
|
end
|
|
|
|
def test_zip
|
|
assert_equal([[1,1],[2,2],[3,3],[1,1],[2,2]], @obj.zip(@obj))
|
|
a = []
|
|
@obj.zip([:a, :b, :c]) {|x,y| a << [x, y] }
|
|
assert_equal([[1,:a],[2,:b],[3,:c],[1,nil],[2,nil]], 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(NoMethodError){ %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))
|
|
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})
|
|
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})
|
|
end
|
|
|
|
def test_cycle
|
|
assert_equal([1,2,3,1,2,1,2,3,1,2], @obj.cycle.take(10))
|
|
end
|
|
|
|
def test_callcc
|
|
assert_raise(RuntimeError) do
|
|
c = nil
|
|
@obj.sort_by {|x| callcc {|c2| c ||= c2 }; x }
|
|
c.call
|
|
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].sort_by {|x| x }
|
|
c.call
|
|
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_join
|
|
ofs = $,
|
|
assert_equal("abc", ("a".."c").join(""))
|
|
assert_equal("a-b-c", ("a".."c").join("-"))
|
|
$, = "-"
|
|
assert_equal("a-b-c", ("a".."c").join())
|
|
$, = nil
|
|
assert_equal("abc", ("a".."c").join())
|
|
assert_equal("123", (1..3).join())
|
|
assert_raise(TypeError, '[ruby-core:24172]') {("a".."c").join(1)}
|
|
class << (e = Object.new.extend(Enumerable))
|
|
def each
|
|
yield self
|
|
end
|
|
end
|
|
assert_raise(ArgumentError){e.join("")}
|
|
assert_raise(ArgumentError){[e].join("")}
|
|
e = Class.new {
|
|
include Enumerable
|
|
def initialize(*args)
|
|
@e = args
|
|
end
|
|
def each
|
|
@e.each {|e| yield e}
|
|
end
|
|
}
|
|
e = e.new(1, e.new(2, e.new(3, e.new(4, 5))))
|
|
assert_equal("1:2:3:4:5", e.join(':'), '[ruby-core:24196]')
|
|
ensure
|
|
$, = ofs
|
|
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(acc: 0) {|elt, h| h[:acc] += elt; h[:acc].even? }
|
|
assert_equal([[false, [1,2]], [true, [3]], [false, [1,2]]], e.to_a)
|
|
assert_equal([[false, [1,2]], [true, [3]], [false, [1,2]]], e.to_a) # this tests h is duplicated.
|
|
|
|
hs = [{}]
|
|
e = [:foo].chunk(hs[0]) {|elt, h|
|
|
hs << h
|
|
true
|
|
}
|
|
assert_equal([[true, [:foo]]], e.to_a)
|
|
assert_equal([[true, [:foo]]], e.to_a)
|
|
assert_equal([{}, {}, {}], hs)
|
|
assert_not_same(hs[0], hs[1])
|
|
assert_not_same(hs[0], hs[2])
|
|
assert_not_same(hs[1], hs[2])
|
|
|
|
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 }
|
|
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)
|
|
|
|
e = @obj.slice_before(acc: 0) {|elt, h| h[:acc] += elt; h[:acc].even? }
|
|
assert_equal([[1,2], [3,1,2]], e.to_a)
|
|
assert_equal([[1,2], [3,1,2]], e.to_a) # this tests h is duplicated.
|
|
|
|
hs = [{}]
|
|
e = [:foo].slice_before(hs[0]) {|elt, h|
|
|
hs << h
|
|
true
|
|
}
|
|
assert_equal([[:foo]], e.to_a)
|
|
assert_equal([[:foo]], e.to_a)
|
|
assert_equal([{}, {}, {}], hs)
|
|
assert_not_same(hs[0], hs[1])
|
|
assert_not_same(hs[0], hs[2])
|
|
assert_not_same(hs[1], hs[2])
|
|
|
|
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)
|
|
end
|
|
|
|
end
|