Issue 3659 - Remove locale dependency from filter classes

test_wrapper.js

+#!/usr/bin/env node --harmony
+"use strict";
+
+require("node-babel")({
+  extensions: [".js"]
+});
+
+// HACK: override Node's module resolution to match the way bootstrap.js
+// resolves modules right now.
+let fs = require("fs");
+let knownModules = fs.readdirSync("lib").map(f => f.replace(/\.js$/, ""));
+knownModules = new Set(knownModules);
+
+let nodeModule = require("module");
+let origResolve = nodeModule._resolveFilename;
+nodeModule._resolveFilename = function()
+{
+  let params = Array.slice(arguments);
+  if (knownModules.has(params[0]))
+    params[0] = "./" + params[0];
+  return origResolve.apply(this, params);
+};
+
+require("./node_modules/.bin/nodeunit");