+ badRequest,
+ cleanForExit,
+ generateRandomString,
+ isTestInstance
+}
+
+function badRequest (req, res, next) {
+ res.type('json').status(400).end()
+}
+
+function generateRandomString (size, callback) {
+ crypto.pseudoRandomBytes(size, function (err, raw) {
+ if (err) return callback(err)
+
+ callback(null, raw.toString('hex'))
+ })