nobu	2013-07-04 13:32:32 +0900 (Thu, 04 Jul 2013)

  New Revision: 41767

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=41767

  Log:
    test_regexp.rb: test for conditional expression
    
    * test/ruby/test_regexp.rb (TestRegexp#test_conditional_expression):
      test for [Bug #8583]

  Modified files:
    trunk/test/ruby/test_regexp.rb

Index: test/ruby/test_regexp.rb
===================================================================
--- test/ruby/test_regexp.rb	(revision 41766)
+++ test/ruby/test_regexp.rb	(revision 41767)
@@ -935,4 +935,21 @@ class TestRegexp < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_regexp.rb#L935
     err = assert_raise(TypeError){ Regexp.quote(42) }
     assert_equal 'no implicit conversion of Fixnum into String', err.message, bug7539
   end
+
+  def test_conditional_expression
+    bug8583 = '[ruby-dev:47480] [Bug #8583]'
+
+    conds = {"xy"=>true, "yx"=>true, "xx"=>false, "yy"=>false}
+    assert_match_each(/\A((x)|(y))(?(2)y|x)\z/, conds, bug8583)
+    assert_match_each(/\A((?<x>x)|(?<y>y))(?(<x>)y|x)\z/, conds, bug8583)
+  end
+
+  def assert_match_each(re, conds, msg = nil)
+    errs = conds.select {|str, match| match ^ (re =~ str)}
+    msg = message(msg) {
+      "Expected #{re.inspect} to\n" +
+      errs.map {|str, match| "\t#{'not ' unless match}match #{str.inspect}"}.join(",\n")
+    }
+    assert(errs.empty?, msg)
+  end
 end

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