* test/ruby/test_object.rb: add tests for Kernel#String and Kernel#Array.

[fix GH-879][fix GH-880] Patch by @yui-knk

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50368 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Tue Apr 22 12:42:12 2015  Kazuki Tanaka  <gogotanaka@ruby-lang.org>
+
+	* test/ruby/test_object.rb: add tests for Kernel#String and Kernel#Array.
+	  [fix GH-879][fix GH-880] Patch by @yui-knk
+
 Tue Apr 21 20:46:02 2015  SHIBATA Hiroshi  <hsbt@ruby-lang.org>
 
 	* test/ruby/test_object.rb: renamed tests to explicitly class name.

test/ruby/test_object.rb

@@ -244,6 +244,8 @@ class TestObject < Test::Unit::TestCase
     assert_raise(TypeError) { String(o) }
     def o.to_s; "o"; end
     assert_equal("o", String(o))
+    def o.to_str; "O"; end
+    assert_equal("O", String(o))
     def o.respond_to?(*) false; end
     assert_raise(TypeError) { String(o) }
   end
@@ -254,6 +256,8 @@ class TestObject < Test::Unit::TestCase
     assert_raise(TypeError) { Array(o) }
     def o.to_a; [1]; end
     assert_equal([1], Array(o))
+    def o.to_ary; [2]; end
+    assert_equal([2], Array(o))
     def o.respond_to?(*) false; end
     assert_equal([o], Array(o))
   end