Fix missing arity on async OutputStream

Regression caused by commit ae72f28 (PR #428). Proxy methods require
all overloaded arities to be handled, so because the 3 arity form of
.write was overloaded, the 1 arity form needed to be overloaded as
well.

Fixes #436.

Author: weavejester

ring-servlet/src/ring/util/servlet.clj

@@ -84,8 +84,9 @@
     (if (nil? context)
       os
       (proxy [java.io.FilterOutputStream] [os]
-        (write [b off len]
-          (.write os b off len))
+        (write
+          ([b]         (.write os b))
+          ([b off len] (.write os b off len)))
         (close []
           (.close os)
           (.complete context))))))

ring-servlet/test/ring/util/test/servlet.clj

@@ -1,6 +1,7 @@
 (ns ring.util.test.servlet
   (:require [clojure.test :refer :all]
-            [ring.util.servlet :refer :all])
+            [ring.util.servlet :refer :all]
+            [ring.core.protocols :as proto])
   (:import [java.util Locale]))
 
 (defmacro ^:private with-locale [locale & body]
@@ -204,3 +205,16 @@
 (deftest defservice-test
   (defservice-test* foo-service)
   (defservice-test* -service))
+
+(deftest make-output-stream-test
+  (let [response (atom {})]
+    (update-servlet-response
+     (servlet-response response)
+     (async-context (atom false))
+     {:status  200
+      :headers {}
+      :body    (reify proto/StreamableResponseBody
+                 (write-body-to-stream [_ _ os]
+                   (.write os (int \h))
+                   (.write os (.getBytes "ello"))))})
+    (is (= "hello" (.toString (:body @response))))))