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* enumerator: New method #size; constructor accepts size

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[Feature #6636]

* include/ruby/intern.h: RETURN_SIZED_ENUMERATOR for support of
  sized enumerators

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37497 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
marcandre 2012-11-06 17:10:06 +00:00
parent 2f4769a874
commit 610eeffa46
3 changed files with 74 additions and 14 deletions
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10
test/ruby/test_enumerator.rb
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@ -401,5 +401,15 @@ class TestEnumerator < Test::Unit::TestCase
assert_raise(LocalJumpError) { Enumerator::Yielder.new }
end
def test_size
assert_equal nil, Enumerator.new{}.size
assert_equal 42, Enumerator.new(->{42}){}.size
assert_equal 42, Enumerator.new(42){}.size
assert_equal 1 << 70, Enumerator.new(1 << 70){}.size
assert_equal Float::INFINITY, Enumerator.new(Float::INFINITY){}.size
assert_equal nil, Enumerator.new(nil){}.size
assert_raise(TypeError) { Enumerator.new("42"){} }
end
end