[PATCH] Use IO#wait instead to fix test for Ruby 1.9

[Fumiaki MATSUSHIMA <mtsm.fm@gmail.com>]

IO#wait_readable is introduced since 2.0

I confirmed we can pass tests for all versions of Ruby with this patch.

https://github.com/mtsmfm/unicorn/pull/2
---
 test/unit/test_ccc.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/unit/test_ccc.rb b/test/unit/test_ccc.rb
index 0db0c38..3be1439 100644
--- a/test/unit/test_ccc.rb
+++ b/test/unit/test_ccc.rb
@@ -44,7 +44,7 @@ def test_ccc_tcpi
     # make sure the server is running, at least
     client = TCPSocket.new(host, port)
     client.write("GET / HTTP/1.1\r\nHost: example.com\r\n\r\n")
-    assert client.wait_readable(10), 'never got response from server'
+    assert client.wait(10), 'never got response from server'
     res = client.read
     assert_match %r{\AHTTP/1\.1 200}, res, 'got part of first response'
     assert_match %r{\r\n\r\n\z}, res, 'got end of response, server is ready'
-- 
2.14.1