io.c: IO#reopen int mode

* io.c (rb_io_reopen): accept File::Constants as well as mode string.
  based on the patch by Glass_saga (Masaki Matsushita) in
  [ruby-core:47694].  [Feature #7067]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37041 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 19 insertions, 0 deletions

diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index e266f115ba..4ee05911fb 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -1713,6 +1713,25 @@ End
     }
   end
 
+  def test_reopen_mode
+    feature7067 = '[ruby-core:47694]'
+    make_tempfile {|t|
+      open(__FILE__) do |f|
+        assert_nothing_raised {
+          f.reopen(t.path, "r")
+          assert_equal("foo\n", f.gets)
+        }
+      end
+
+      open(__FILE__) do |f|
+        assert_nothing_raised(feature7067) {
+          f.reopen(t.path, File::RDONLY)
+          assert_equal("foo\n", f.gets)
+        }
+      end
+    }
+  end
+
   def test_foreach
     a = []
     IO.foreach("|" + EnvUtil.rubybin + " -e 'puts :foo; puts :bar; puts :baz'") {|x| a << x }