add test_setTimeout

Had to disable Init_tcp because it starts an oi_async thread pool and
prevents the node loop from exiting when no watchers remain. Not sure how
to deal with this problem in general because eventually we'll need the
thread pool.

node.cc

@@ -154,7 +154,7 @@ main (int argc, char *argv[])
   g->Set( String::New("log"), FunctionTemplate::New(LogCallback)->GetFunction());
 
   Init_timer(g);
-  Init_tcp(g);
+  //Init_tcp(g);
   Init_http(g);
 
   V8::SetFatalErrorHandler(OnFatalError);

test/common.rb

@@ -11,7 +11,11 @@ def assert(x, msg = "")
 end
 
 def assert_equal(x, y, msg = "")
-  assert(x == y, "#{x.inspect} != #{y.inspect} #{msg}")
+  raise("expected #{x.inspect} == #{y.inspect}. #{msg}") unless x == y
+end
+
+def assert_less_than(x, y, msg = "")
+  raise("expected #{x.inspect} < #{y.inspect}. #{msg}") unless x < y
 end
 
 def wait_for_server(host, port)

test/test_setTimeout.rb

@@ -0,0 +1,16 @@
+#!/usr/bin/env ruby
+require File.dirname(__FILE__) + "/common"
+
+prog = IO.popen("#{$node} #{$tf.path}")
+a = Time.now
+assert_equal("hello\n", prog.readpartial(100))
+b = Time.now
+assert_equal("world\n", prog.read(100))
+c = Time.now
+
+assert_less_than(b - a, 0.5) # startup time
+assert_less_than(1.5, c - b)
+
+__END__
+log("hello");
+setTimeout(function () { log("world"); }, 1500);