Merge pull request googleapis#24 from shinfan/master

Fixed an issue that sendPostRequest() was not waiting for the response.

src/main/java/com/google/api/gax/testing/LocalServiceHelper.java

@@ -19,6 +19,7 @@
 import static com.google.common.base.MoreObjects.firstNonNull;
 
 import com.google.common.base.Strings;
+import com.google.common.io.CharStreams;
 
 import java.io.BufferedReader;
 import java.io.IOException;
@@ -250,13 +251,18 @@ public void stop() throws IOException, InterruptedException {
     }
   }
 
-  public void sendPostRequest(String request) throws IOException {
+  public String sendPostRequest(String request) throws IOException {
     URL url = new URL("http", "localhost", this.port, request);
     HttpURLConnection con = (HttpURLConnection) url.openConnection();
     con.setRequestMethod("POST");
     con.setDoOutput(true);
     OutputStream out = con.getOutputStream();
     out.write("".getBytes());
     out.flush();
+
+    InputStream in = con.getInputStream();
+    String response = CharStreams.toString(new InputStreamReader(con.getInputStream()));
+    in.close();
+    return response;
   }
 }