From 1b9034825293464ff4ce6b501dec50b9b0532f6d Mon Sep 17 00:00:00 2001 From: knu Date: Mon, 14 Apr 2008 10:12:17 +0000 Subject: * enum.c New methods: Enumerable#take, #take_while, #drop and #drop_while; backported from 1.9. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@16012 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- test/ruby/test_enum.rb | 257 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 257 insertions(+) create mode 100644 test/ruby/test_enum.rb (limited to 'test') diff --git a/test/ruby/test_enum.rb b/test/ruby/test_enum.rb new file mode 100644 index 0000000000..6171c9a234 --- /dev/null +++ b/test/ruby/test_enum.rb @@ -0,0 +1,257 @@ +require 'test/unit' + +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(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) } + 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) } + 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 }) + a = %w(albatross dog horse) + assert_equal("albatross", a.min) + assert_equal("dog", a.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 }) + a = %w(albatross dog horse) + assert_equal("horse", a.max) + assert_equal("albatross", a.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 }) + a = %w(albatross dog horse) + assert_equal(["albatross", "horse"], a.minmax) + assert_equal(["dog", "albatross"], a.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 }) + 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 + + 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) + 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) + 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 +end -- cgit v1.2.3