test_lazy_enumerator.rb: test for cycle chain

* test/ruby/test_lazy_enumerator.rb (test_cycle_chain): more test for
  infinite sequence.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36548 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/test/ruby/test_lazy_enumerator.rb b/test/ruby/test_lazy_enumerator.rb
index a1605a8af0..8ed6da2800 100644
--- a/test/ruby/test_lazy_enumerator.rb
+++ b/test/ruby/test_lazy_enumerator.rb
@@ -285,6 +285,12 @@ class TestLazyEnumerator < Test::Unit::TestCase
     assert_equal(3, a.current)
   end
 
+  def test_cycle_chain
+    a = Step.new(1..3)
+    assert_equal([2,2,2,2,2,2,2,2,2,2], a.lazy.cycle.select {|x| x == 2}.take(10).force)
+    assert_equal([2,2,2,2,2,2,2,2,2,2], a.lazy.select {|x| x == 2}.cycle.take(10).force)
+  end
+
   def test_force
     assert_equal([1, 2, 3], (1..Float::INFINITY).lazy.take(3).force)
   end