nobu	2016-09-30 21:46:53 +0900 (Fri, 30 Sep 2016)

  New Revision: 56299

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=56299

  Log:
    test_flip.rb: add
    
    * test/ruby/test_flip.rb (test_flip_flop): basic test.

  Modified files:
    trunk/test/ruby/test_flip.rb
Index: test/ruby/test_flip.rb
===================================================================
--- test/ruby/test_flip.rb	(revision 56298)
+++ test/ruby/test_flip.rb	(revision 56299)
@@ -2,6 +2,11 @@ https://github.com/ruby/ruby/blob/trunk/test/ruby/test_flip.rb#L2
 require 'test/unit'
 
 class TestFlip < Test::Unit::TestCase
+  def test_flip_flop
+    assert_equal [2], (1..9).select {|n| true if (n==2)..(n%2).zero?}
+    assert_equal [2,3,4], (1..9).select {|n| true if (n==2)...(n%2).zero?}
+  end
+
   def test_hidden_key
     bug6899 = '[ruby-core:47253]'
     foo = "foor"

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