* enumerator.c (enumerator_initialize),

  test/ruby/test_enumerator.rb: Add an ability to generate an
  enumerator from a block. [experimental] [ruby-dev:35903]



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@18863 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 0 deletions

diff --git a/test/ruby/test_enumerator.rb b/test/ruby/test_enumerator.rb
index d1e75208f8..135ed38249 100644
--- a/test/ruby/test_enumerator.rb
+++ b/test/ruby/test_enumerator.rb
@@ -58,6 +58,7 @@ class TestEnumerator < Test::Unit::TestCase
   def test_initialize
     assert_equal([1, 2, 3], @obj.to_enum(:foo, 1, 2, 3).to_a)
     assert_equal([1, 2, 3], Enumerator.new(@obj, :foo, 1, 2, 3).to_a)
+    assert_equal([1, 2, 3], Enumerator.new { |y| i = 0; loop { y << (i += 1) } }.take(3))
     assert_raise(ArgumentError) { Enumerator.new }
   end
 
@@ -66,6 +67,10 @@ class TestEnumerator < Test::Unit::TestCase
     e = @obj.to_enum(:foo, 1, 2, 3)
     assert_nothing_raised { assert_equal(1, e.next) }
     assert_raise(TypeError) { e.dup }
+
+    e = Enumerator.new { |y| i = 0; loop { y << (i += 1) } }.dup
+    assert_nothing_raised { assert_equal(1, e.next) }
+    assert_raise(TypeError) { e.dup }
   end
 
   def test_gc