##
# Enumerable ISO Test

assert('Enumerable', '15.3.2') do
  assert_equal(Enumerable.class, Module)
end

assert('Enumerable#all?', '15.3.2.2.1') do
  assert_true([1,2,3].all?)
  assert_false([1,false,3].all?)
end

assert('Enumerable#any?', '15.3.2.2.2') do
  assert_true([false,true,false].any?)
  assert_false([false,false,false].any?)
end

assert('Enumerable#collect', '15.3.2.2.3') do
  assert_true [1,2,3].collect { |i| i + i } == [2,4,6]
end

assert('Enumerable#detect', '15.3.2.2.4') do
  assert_true [1,2,3].detect() { true }
  assert_equal [1,2,3].detect("a") { false }, 'a'
end

assert('Array#each_with_index', '15.3.2.2.5') do
  a = nil
  b = nil

  [1].each_with_index {|e,i| a = e; b = i}

  assert_equal(a, 1)
  assert_equal(b, 0)
end

assert('Enumerable#entries', '15.3.2.2.6') do
  assert_equal([1].entries, [1])
end

assert('Enumerable#find', '15.3.2.2.7') do
  assert_true [1,2,3].find() { true }
  assert_equal [1,2,3].find("a") { false }, 'a'
end

assert('Enumerable#find_all', '15.3.2.2.8') do
  assert_true [1,2,3,4,5,6,7,8,9].find_all() {|i| i%2 == 0}, [2,4,6,8]
end

assert('Enumerable#grep', '15.3.2.2.9') do
  assert_equal [1,2,3,4,5,6,7,8,9].grep(4..6), [4,5,6]
end

assert('Enumerable#include?', '15.3.2.2.10') do
  assert_true [1,2,3,4,5,6,7,8,9].include?(5)
  assert_false [1,2,3,4,5,6,7,8,9].include?(0)
end

assert('Enumerable#inject', '15.3.2.2.11') do
  assert_equal [1,2,3,4,5,6].inject() {|s, n| s + n}, 21
  assert_equal [1,2,3,4,5,6].inject(1) {|s, n| s + n}, 22
end

assert('Enumerable#map', '15.3.2.2.12') do
  assert_equal [1,2,3].map { |i| i + i }, [2,4,6]
end

assert('Enumerable#max', '15.3.2.2.13') do
  a = ['aaa', 'bb', 'c']
  assert_equal a.max, 'c'
  assert_equal a.max {|i1,i2| i1.length <=> i2.length}, 'aaa'
end

assert('Enumerable#min', '15.3.2.2.14') do
  a = ['aaa', 'bb', 'c']
  assert_equal a.min, 'aaa'
  assert_equal a.min {|i1,i2| i1.length <=> i2.length}, 'c'
end

assert('Enumerable#member?', '15.3.2.2.15') do
  assert_true [1,2,3,4,5,6,7,8,9].member?(5)
  assert_false [1,2,3,4,5,6,7,8,9].member?(0)
end

assert('Enumerable#partion', '15.3.2.2.16') do
  [0,1,2,3,4,5,6,7,8,9].partition do |i|
    i % 2 == 0
  end == [[0,2,4,6,8], [1,3,5,7,9]]
end

assert('Enumerable#reject', '15.3.2.2.17') do
  [0,1,2,3,4,5,6,7,8,9].reject do |i|
    i % 2 == 0
  end == [1,3,5,7,9]
end

assert('Enumerable#select', '15.3.2.2.18') do
  assert_equal [1,2,3,4,5,6,7,8,9].select() {|i| i%2 == 0}, [2,4,6,8]
end

assert('Enumerable#sort', '15.3.2.2.19') do
  assert_equal [7,3,1,2,6,4].sort, [1,2,3,4,6,7]
  assert_equal [7,3,1,2,6,4].sort {|e1,e2|e2<=>e1}, [7,6,4,3,2,1]
end

assert('Enumerable#to_a', '15.3.2.2.20') do
  assert_equal [1].to_a, [1]
end