1 files changed, 19 insertions, 0 deletions
diff --git a/test/socket/test_tcp.rb b/test/socket/test_tcp.rb
index 3aa7be82c3..c623c1b58c 100644
--- a/test/socket/test_tcp.rb
+++ b/test/socket/test_tcp.rb
@@ -21,4 +21,23 @@ assert false, "TODO: doesn't work on mswin32/64" if /mswin/ =~ RUBY_PLATFORM
     th.kill
     th.join
   end
+
+  def test_encoding
+    svr = TCPServer.new("localhost", 0)
+    th = Thread.new {
+      c = svr.accept
+      c.write "foo\r\n"
+      c.close
+    }
+    addr = svr.addr
+    sock = TCPSocket.open(addr[2], addr[1])
+    assert_equal(true, sock.binmode?)
+    s = sock.gets
+    assert_equal("foo\r\n", s)
+    assert_equal(Encoding.find("ASCII-8BIT"), s.encoding)
+  ensure
+    th.kill
+    th.join
+    sock.close if sock
+  end
 end if defined?(TCPSocket)