test: prevent global leak problems

test/index.js

@@ -1,6 +1,13 @@
 
 var env = require('./support/env');
 
+// whitelist some globals to avoid warnings
+global.__eio = null;
+global.WEB_SOCKET_LOGGER = null;
+global.WEB_SOCKET_SUPPRESS_CROSS_DOMAIN_SWF_ERROR = null;
+global.WEB_SOCKET_DISABLE_AUTO_INITIALIZATION = null;
+global.WEB_SOCKET_SWF_LOCATION = null;
+
 // node only tests
 if (env.node) {
   require('./url');