Emit done on Hock when all assertions pass

This is useful when you want to test requests made out of bounds (for
example, when batching logging requests).

lib/hock.js

@@ -3,6 +3,8 @@
 var qs = require('querystring'),
     url_ = require('url'),
     http = require('http'),
+    util = require('util'),
+    events = require('events').EventEmitter,
     Request = require('./request'),
     deepEqual = require('deep-equal'),
     urlEqual = require('url-equal');
@@ -24,7 +26,9 @@ var Hock = module.exports = function (options) {
   this._throwOnUnmatched = (typeof options.throwOnUnmatched === 'boolean' ? options.throwOnUnmatched : true);
   this._assertions = [];
   this.handler = Hock.prototype.handler.bind(this);
+  events.EventEmitter.call(this);
 };
+util.inherits(Hock, events.EventEmitter);
 
 /**
  * Hock.enqueue
@@ -357,14 +361,9 @@ Hock.prototype.handler = function (req, res) {
 
   req.on('end', function () {
 
-    for (var i = 0; i < self._assertions.length; i++) {
-      if (self._assertions[i].isMatch(req)) {
-        matchIndex = i;
-        break;
-      }
-    }
+    const matchIndex = self._assertions.findIndex(assertion => assertion.isMatch(req));
 
-    if (matchIndex === null) {
+    if (matchIndex === -1) {
       if (self._throwOnUnmatched) {
         throw new Error('No Match For: ' + req.method + ' ' + req.url);
       }
@@ -380,6 +379,7 @@ Hock.prototype.handler = function (req, res) {
       if (self._assertions[matchIndex].sendResponse(res)) {
         self._assertions.splice(matchIndex, 1)[0];
       }
+      if (self._assertions.length === 0) self.emit('done');
     }
   });
 };