* test/ruby/test_string.rb(test_chr): added test for String#chr

[fix GH-1179]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53441 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Tue Jan  5 21:43:50 2016  Kuniaki IGARASHI  <igaiga@gmail.com>
+
+	* test/ruby/test_string.rb(test_chr): added test for String#chr
+	  [fix GH-1179]
+
 Tue Jan  5 21:32:26 2016  Kuniaki IGARASHI  <igaiga@gmail.com>
 
 	* test/ruby/test_numeric.rb (test_nonzero_p): added test for String#nonzero?

test/ruby/test_string.rb

@@ -2349,6 +2349,13 @@ class TestString < Test::Unit::TestCase
     assert_equal(0x3042, "\u3042\u3043".ord)
     assert_raise(ArgumentError) { "".ord }
   end
+
+  def test_chr
+    assert_equal("a", "abcde".chr)
+    assert_equal("a", "a".chr)
+    assert_equal("\u3042", "\u3042\u3043".chr)
+    assert_equal('', ''.chr)
+  end
 end
 
 class TestString2 < TestString