Add failing test for HEAD requests

Needs to be fixed for 0.2.

test/simple/test-http-head-request.js

@@ -0,0 +1,39 @@
+require('../common');
+
+var assert = require("assert");
+var http = require("http");
+var sys = require("sys");
+
+var body = "hello world";
+
+server = http.createServer(function (req, res) {
+  res.writeHeader(200 , { 'Content-Length': body.length.toString()
+                        , 'Content-Type': 'text/plain'
+                        });
+  sys.puts('method: ' + req.method);
+  if (req.method != 'HEAD') res.write(body);
+  res.end();
+});
+server.listen(PORT);
+
+var gotEnd = false;
+
+server.addListener('listening', function() {
+  var client = http.createClient(PORT);
+  var request = client.request("HEAD", "/");
+  request.addListener('response', function (response) {
+    sys.puts('got response');
+    response.addListener("data", function () {
+      process.exit(2);
+    });
+    response.addListener("end", function () {
+      process.exit(0);
+    });
+  });
+  request.end();
+});
+
+//give a bit of time for the server to respond before we check it
+setTimeout(function() {
+  process.exit(1);
+}, 2000);