Merge branch 'develop' of github.com:matrix-org/synapse

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diff --git a/webclient/js/angular-mocks.js b/webclient/js/angular-mocks.js
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+/**
+ * @license AngularJS v1.2.22
+ * (c) 2010-2014 Google, Inc. http://angularjs.org
+ * License: MIT
+ */
+(function(window, angular, undefined) {
+
+'use strict';
+
+/**
+ * @ngdoc object
+ * @name angular.mock
+ * @description
+ *
+ * Namespace from 'angular-mocks.js' which contains testing related code.
+ */
+angular.mock = {};
+
+/**
+ * ! This is a private undocumented service !
+ *
+ * @name $browser
+ *
+ * @description
+ * This service is a mock implementation of {@link ng.$browser}. It provides fake
+ * implementation for commonly used browser apis that are hard to test, e.g. setTimeout, xhr,
+ * cookies, etc...
+ *
+ * The api of this service is the same as that of the real {@link ng.$browser $browser}, except
+ * that there are several helper methods available which can be used in tests.
+ */
+angular.mock.$BrowserProvider = function() {
+  this.$get = function() {
+    return new angular.mock.$Browser();
+  };
+};
+
+angular.mock.$Browser = function() {
+  var self = this;
+
+  this.isMock = true;
+  self.$$url = "http://server/";
+  self.$$lastUrl = self.$$url; // used by url polling fn
+  self.pollFns = [];
+
+  // TODO(vojta): remove this temporary api
+  self.$$completeOutstandingRequest = angular.noop;
+  self.$$incOutstandingRequestCount = angular.noop;
+
+
+  // register url polling fn
+
+  self.onUrlChange = function(listener) {
+    self.pollFns.push(
+      function() {
+        if (self.$$lastUrl != self.$$url) {
+          self.$$lastUrl = self.$$url;
+          listener(self.$$url);
+        }
+      }
+    );
+
+    return listener;
+  };
+
+  self.cookieHash = {};
+  self.lastCookieHash = {};
+  self.deferredFns = [];
+  self.deferredNextId = 0;
+
+  self.defer = function(fn, delay) {
+    delay = delay || 0;
+    self.deferredFns.push({time:(self.defer.now + delay), fn:fn, id: self.deferredNextId});
+    self.deferredFns.sort(function(a,b){ return a.time - b.time;});
+    return self.deferredNextId++;
+  };
+
+
+  /**
+   * @name $browser#defer.now
+   *
+   * @description
+   * Current milliseconds mock time.
+   */
+  self.defer.now = 0;
+
+
+  self.defer.cancel = function(deferId) {
+    var fnIndex;
+
+    angular.forEach(self.deferredFns, function(fn, index) {
+      if (fn.id === deferId) fnIndex = index;
+    });
+
+    if (fnIndex !== undefined) {
+      self.deferredFns.splice(fnIndex, 1);
+      return true;
+    }
+
+    return false;
+  };
+
+
+  /**
+   * @name $browser#defer.flush
+   *
+   * @description
+   * Flushes all pending requests and executes the defer callbacks.
+   *
+   * @param {number=} number of milliseconds to flush. See {@link #defer.now}
+   */
+  self.defer.flush = function(delay) {
+    if (angular.isDefined(delay)) {
+      self.defer.now += delay;
+    } else {
+      if (self.deferredFns.length) {
+        self.defer.now = self.deferredFns[self.deferredFns.length-1].time;
+      } else {
+        throw new Error('No deferred tasks to be flushed');
+      }
+    }
+
+    while (self.deferredFns.length && self.deferredFns[0].time <= self.defer.now) {
+      self.deferredFns.shift().fn();
+    }
+  };
+
+  self.$$baseHref = '';
+  self.baseHref = function() {
+    return this.$$baseHref;
+  };
+};
+angular.mock.$Browser.prototype = {
+
+/**
+  * @name $browser#poll
+  *
+  * @description
+  * run all fns in pollFns
+  */
+  poll: function poll() {
+    angular.forEach(this.pollFns, function(pollFn){
+      pollFn();
+    });
+  },
+
+  addPollFn: function(pollFn) {
+    this.pollFns.push(pollFn);
+    return pollFn;
+  },
+
+  url: function(url, replace) {
+    if (url) {
+      this.$$url = url;
+      return this;
+    }
+
+    return this.$$url;
+  },
+
+  cookies:  function(name, value) {
+    if (name) {
+      if (angular.isUndefined(value)) {
+        delete this.cookieHash[name];
+      } else {
+        if (angular.isString(value) &&       //strings only
+            value.length <= 4096) {          //strict cookie storage limits
+          this.cookieHash[name] = value;
+        }
+      }
+    } else {
+      if (!angular.equals(this.cookieHash, this.lastCookieHash)) {
+        this.lastCookieHash = angular.copy(this.cookieHash);
+        this.cookieHash = angular.copy(this.cookieHash);
+      }
+      return this.cookieHash;
+    }
+  },
+
+  notifyWhenNoOutstandingRequests: function(fn) {
+    fn();
+  }
+};
+
+
+/**
+ * @ngdoc provider
+ * @name $exceptionHandlerProvider
+ *
+ * @description
+ * Configures the mock implementation of {@link ng.$exceptionHandler} to rethrow or to log errors
+ * passed into the `$exceptionHandler`.
+ */
+
+/**
+ * @ngdoc service
+ * @name $exceptionHandler
+ *
+ * @description
+ * Mock implementation of {@link ng.$exceptionHandler} that rethrows or logs errors passed
+ * into it. See {@link ngMock.$exceptionHandlerProvider $exceptionHandlerProvider} for configuration
+ * information.
+ *
+ *
+ * ```js
+ *   describe('$exceptionHandlerProvider', function() {
+ *
+ *     it('should capture log messages and exceptions', function() {
+ *
+ *       module(function($exceptionHandlerProvider) {
+ *         $exceptionHandlerProvider.mode('log');
+ *       });
+ *
+ *       inject(function($log, $exceptionHandler, $timeout) {
+ *         $timeout(function() { $log.log(1); });
+ *         $timeout(function() { $log.log(2); throw 'banana peel'; });
+ *         $timeout(function() { $log.log(3); });
+ *         expect($exceptionHandler.errors).toEqual([]);
+ *         expect($log.assertEmpty());
+ *         $timeout.flush();
+ *         expect($exceptionHandler.errors).toEqual(['banana peel']);
+ *         expect($log.log.logs).toEqual([[1], [2], [3]]);
+ *       });
+ *     });
+ *   });
+ * ```
+ */
+
+angular.mock.$ExceptionHandlerProvider = function() {
+  var handler;
+
+  /**
+   * @ngdoc method
+   * @name $exceptionHandlerProvider#mode
+   *
+   * @description
+   * Sets the logging mode.
+   *
+   * @param {string} mode Mode of operation, defaults to `rethrow`.
+   *
+   *   - `rethrow`: If any errors are passed into the handler in tests, it typically
+   *                means that there is a bug in the application or test, so this mock will
+   *                make these tests fail.
+   *   - `log`: Sometimes it is desirable to test that an error is thrown, for this case the `log`
+   *            mode stores an array of errors in `$exceptionHandler.errors`, to allow later
+   *            assertion of them. See {@link ngMock.$log#assertEmpty assertEmpty()} and
+   *            {@link ngMock.$log#reset reset()}
+   */
+  this.mode = function(mode) {
+    switch(mode) {
+      case 'rethrow':
+        handler = function(e) {
+          throw e;
+        };
+        break;
+      case 'log':
+        var errors = [];
+
+        handler = function(e) {
+          if (arguments.length == 1) {
+            errors.push(e);
+          } else {
+            errors.push([].slice.call(arguments, 0));
+          }
+        };
+
+        handler.errors = errors;
+        break;
+      default:
+        throw new Error("Unknown mode '" + mode + "', only 'log'/'rethrow' modes are allowed!");
+    }
+  };
+
+  this.$get = function() {
+    return handler;
+  };
+
+  this.mode('rethrow');
+};
+
+
+/**
+ * @ngdoc service
+ * @name $log
+ *
+ * @description
+ * Mock implementation of {@link ng.$log} that gathers all logged messages in arrays
+ * (one array per logging level). These arrays are exposed as `logs` property of each of the
+ * level-specific log function, e.g. for level `error` the array is exposed as `$log.error.logs`.
+ *
+ */
+angular.mock.$LogProvider = function() {
+  var debug = true;
+
+  function concat(array1, array2, index) {
+    return array1.concat(Array.prototype.slice.call(array2, index));
+  }
+
+  this.debugEnabled = function(flag) {
+    if (angular.isDefined(flag)) {
+      debug = flag;
+      return this;
+    } else {
+      return debug;
+    }
+  };
+
+  this.$get = function () {
+    var $log = {
+      log: function() { $log.log.logs.push(concat([], arguments, 0)); },
+      warn: function() { $log.warn.logs.push(concat([], arguments, 0)); },
+      info: function() { $log.info.logs.push(concat([], arguments, 0)); },
+      error: function() { $log.error.logs.push(concat([], arguments, 0)); },
+      debug: function() {
+        if (debug) {
+          $log.debug.logs.push(concat([], arguments, 0));
+        }
+      }
+    };
+
+    /**
+     * @ngdoc method
+     * @name $log#reset
+     *
+     * @description
+     * Reset all of the logging arrays to empty.
+     */
+    $log.reset = function () {
+      /**
+       * @ngdoc property
+       * @name $log#log.logs
+       *
+       * @description
+       * Array of messages logged using {@link ngMock.$log#log}.
+       *
+       * @example
+       * ```js
+       * $log.log('Some Log');
+       * var first = $log.log.logs.unshift();
+       * ```
+       */
+      $log.log.logs = [];
+      /**
+       * @ngdoc property
+       * @name $log#info.logs
+       *
+       * @description
+       * Array of messages logged using {@link ngMock.$log#info}.
+       *
+       * @example
+       * ```js
+       * $log.info('Some Info');
+       * var first = $log.info.logs.unshift();
+       * ```
+       */
+      $log.info.logs = [];
+      /**
+       * @ngdoc property
+       * @name $log#warn.logs
+       *
+       * @description
+       * Array of messages logged using {@link ngMock.$log#warn}.
+       *
+       * @example
+       * ```js
+       * $log.warn('Some Warning');
+       * var first = $log.warn.logs.unshift();
+       * ```
+       */
+      $log.warn.logs = [];
+      /**
+       * @ngdoc property
+       * @name $log#error.logs
+       *
+       * @description
+       * Array of messages logged using {@link ngMock.$log#error}.
+       *
+       * @example
+       * ```js
+       * $log.error('Some Error');
+       * var first = $log.error.logs.unshift();
+       * ```
+       */
+      $log.error.logs = [];
+        /**
+       * @ngdoc property
+       * @name $log#debug.logs
+       *
+       * @description
+       * Array of messages logged using {@link ngMock.$log#debug}.
+       *
+       * @example
+       * ```js
+       * $log.debug('Some Error');
+       * var first = $log.debug.logs.unshift();
+       * ```
+       */
+      $log.debug.logs = [];
+    };
+
+    /**
+     * @ngdoc method
+     * @name $log#assertEmpty
+     *
+     * @description
+     * Assert that the all of the logging methods have no logged messages. If messages present, an
+     * exception is thrown.
+     */
+    $log.assertEmpty = function() {
+      var errors = [];
+      angular.forEach(['error', 'warn', 'info', 'log', 'debug'], function(logLevel) {
+        angular.forEach($log[logLevel].logs, function(log) {
+          angular.forEach(log, function (logItem) {
+            errors.push('MOCK $log (' + logLevel + '): ' + String(logItem) + '\n' +
+                        (logItem.stack || ''));
+          });
+        });
+      });
+      if (errors.length) {
+        errors.unshift("Expected $log to be empty! Either a message was logged unexpectedly, or "+
+          "an expected log message was not checked and removed:");
+        errors.push('');
+        throw new Error(errors.join('\n---------\n'));
+      }
+    };
+
+    $log.reset();
+    return $log;
+  };
+};
+
+
+/**
+ * @ngdoc service
+ * @name $interval
+ *
+ * @description
+ * Mock implementation of the $interval service.
+ *
+ * Use {@link ngMock.$interval#flush `$interval.flush(millis)`} to
+ * move forward by `millis` milliseconds and trigger any functions scheduled to run in that
+ * time.
+ *
+ * @param {function()} fn A function that should be called repeatedly.
+ * @param {number} delay Number of milliseconds between each function call.
+ * @param {number=} [count=0] Number of times to repeat. If not set, or 0, will repeat
+ *   indefinitely.
+ * @param {boolean=} [invokeApply=true] If set to `false` skips model dirty checking, otherwise
+ *   will invoke `fn` within the {@link ng.$rootScope.Scope#$apply $apply} block.
+ * @returns {promise} A promise which will be notified on each iteration.
+ */
+angular.mock.$IntervalProvider = function() {
+  this.$get = ['$rootScope', '$q',
+       function($rootScope,   $q) {
+    var repeatFns = [],
+        nextRepeatId = 0,
+        now = 0;
+
+    var $interval = function(fn, delay, count, invokeApply) {
+      var deferred = $q.defer(),
+          promise = deferred.promise,
+          iteration = 0,
+          skipApply = (angular.isDefined(invokeApply) && !invokeApply);
+
+      count = (angular.isDefined(count)) ? count : 0;
+      promise.then(null, null, fn);
+
+      promise.$$intervalId = nextRepeatId;
+
+      function tick() {
+        deferred.notify(iteration++);
+
+        if (count > 0 && iteration >= count) {
+          var fnIndex;
+          deferred.resolve(iteration);
+
+          angular.forEach(repeatFns, function(fn, index) {
+            if (fn.id === promise.$$intervalId) fnIndex = index;
+          });
+
+          if (fnIndex !== undefined) {
+            repeatFns.splice(fnIndex, 1);
+          }
+        }
+
+        if (!skipApply) $rootScope.$apply();
+      }
+
+      repeatFns.push({
+        nextTime:(now + delay),
+        delay: delay,
+        fn: tick,
+        id: nextRepeatId,
+        deferred: deferred
+      });
+      repeatFns.sort(function(a,b){ return a.nextTime - b.nextTime;});
+
+      nextRepeatId++;
+      return promise;
+    };
+    /**
+     * @ngdoc method
+     * @name $interval#cancel
+     *
+     * @description
+     * Cancels a task associated with the `promise`.
+     *
+     * @param {promise} promise A promise from calling the `$interval` function.
+     * @returns {boolean} Returns `true` if the task was successfully cancelled.
+     */
+    $interval.cancel = function(promise) {
+      if(!promise) return false;
+      var fnIndex;
+
+      angular.forEach(repeatFns, function(fn, index) {
+        if (fn.id === promise.$$intervalId) fnIndex = index;
+      });
+
+      if (fnIndex !== undefined) {
+        repeatFns[fnIndex].deferred.reject('canceled');
+        repeatFns.splice(fnIndex, 1);
+        return true;
+      }
+
+      return false;
+    };
+
+    /**
+     * @ngdoc method
+     * @name $interval#flush
+     * @description
+     *
+     * Runs interval tasks scheduled to be run in the next `millis` milliseconds.
+     *
+     * @param {number=} millis maximum timeout amount to flush up until.
+     *
+     * @return {number} The amount of time moved forward.
+     */
+    $interval.flush = function(millis) {
+      now += millis;
+      while (repeatFns.length && repeatFns[0].nextTime <= now) {
+        var task = repeatFns[0];
+        task.fn();
+        task.nextTime += task.delay;
+        repeatFns.sort(function(a,b){ return a.nextTime - b.nextTime;});
+      }
+      return millis;
+    };
+
+    return $interval;
+  }];
+};
+
+
+/* jshint -W101 */
+/* The R_ISO8061_STR regex is never going to fit into the 100 char limit!
+ * This directive should go inside the anonymous function but a bug in JSHint means that it would
+ * not be enacted early enough to prevent the warning.
+ */
+var R_ISO8061_STR = /^(\d{4})-?(\d\d)-?(\d\d)(?:T(\d\d)(?:\:?(\d\d)(?:\:?(\d\d)(?:\.(\d{3}))?)?)?(Z|([+-])(\d\d):?(\d\d)))?$/;
+
+function jsonStringToDate(string) {
+  var match;
+  if (match = string.match(R_ISO8061_STR)) {
+    var date = new Date(0),
+        tzHour = 0,
+        tzMin  = 0;
+    if (match[9]) {
+      tzHour = int(match[9] + match[10]);
+      tzMin = int(match[9] + match[11]);
+    }
+    date.setUTCFullYear(int(match[1]), int(match[2]) - 1, int(match[3]));
+    date.setUTCHours(int(match[4]||0) - tzHour,
+                     int(match[5]||0) - tzMin,
+                     int(match[6]||0),
+                     int(match[7]||0));
+    return date;
+  }
+  return string;
+}
+
+function int(str) {
+  return parseInt(str, 10);
+}
+
+function padNumber(num, digits, trim) {
+  var neg = '';
+  if (num < 0) {
+    neg =  '-';
+    num = -num;
+  }
+  num = '' + num;
+  while(num.length < digits) num = '0' + num;
+  if (trim)
+    num = num.substr(num.length - digits);
+  return neg + num;
+}
+
+
+/**
+ * @ngdoc type
+ * @name angular.mock.TzDate
+ * @description
+ *
+ * *NOTE*: this is not an injectable instance, just a globally available mock class of `Date`.
+ *
+ * Mock of the Date type which has its timezone specified via constructor arg.
+ *
+ * The main purpose is to create Date-like instances with timezone fixed to the specified timezone
+ * offset, so that we can test code that depends on local timezone settings without dependency on
+ * the time zone settings of the machine where the code is running.
+ *
+ * @param {number} offset Offset of the *desired* timezone in hours (fractions will be honored)
+ * @param {(number|string)} timestamp Timestamp representing the desired time in *UTC*
+ *
+ * @example
+ * !!!! WARNING !!!!!
+ * This is not a complete Date object so only methods that were implemented can be called safely.
+ * To make matters worse, TzDate instances inherit stuff from Date via a prototype.
+ *
+ * We do our best to intercept calls to "unimplemented" methods, but since the list of methods is
+ * incomplete we might be missing some non-standard methods. This can result in errors like:
+ * "Date.prototype.foo called on incompatible Object".
+ *
+ * ```js
+ * var newYearInBratislava = new TzDate(-1, '2009-12-31T23:00:00Z');
+ * newYearInBratislava.getTimezoneOffset() => -60;
+ * newYearInBratislava.getFullYear() => 2010;
+ * newYearInBratislava.getMonth() => 0;
+ * newYearInBratislava.getDate() => 1;
+ * newYearInBratislava.getHours() => 0;
+ * newYearInBratislava.getMinutes() => 0;
+ * newYearInBratislava.getSeconds() => 0;
+ * ```
+ *
+ */
+angular.mock.TzDate = function (offset, timestamp) {
+  var self = new Date(0);
+  if (angular.isString(timestamp)) {
+    var tsStr = timestamp;
+
+    self.origDate = jsonStringToDate(timestamp);
+
+    timestamp = self.origDate.getTime();
+    if (isNaN(timestamp))
+      throw {
+        name: "Illegal Argument",
+        message: "Arg '" + tsStr + "' passed into TzDate constructor is not a valid date string"
+      };
+  } else {
+    self.origDate = new Date(timestamp);
+  }
+
+  var localOffset = new Date(timestamp).getTimezoneOffset();
+  self.offsetDiff = localOffset*60*1000 - offset*1000*60*60;
+  self.date = new Date(timestamp + self.offsetDiff);
+
+  self.getTime = function() {
+    return self.date.getTime() - self.offsetDiff;
+  };
+
+  self.toLocaleDateString = function() {
+    return self.date.toLocaleDateString();
+  };
+
+  self.getFullYear = function() {
+    return self.date.getFullYear();
+  };
+
+  self.getMonth = function() {
+    return self.date.getMonth();
+  };
+
+  self.getDate = function() {
+    return self.date.getDate();
+  };
+
+  self.getHours = function() {
+    return self.date.getHours();
+  };
+
+  self.getMinutes = function() {
+    return self.date.getMinutes();
+  };
+
+  self.getSeconds = function() {
+    return self.date.getSeconds();
+  };
+
+  self.getMilliseconds = function() {
+    return self.date.getMilliseconds();
+  };
+
+  self.getTimezoneOffset = function() {
+    return offset * 60;
+  };
+
+  self.getUTCFullYear = function() {
+    return self.origDate.getUTCFullYear();
+  };
+
+  self.getUTCMonth = function() {
+    return self.origDate.getUTCMonth();
+  };
+
+  self.getUTCDate = function() {
+    return self.origDate.getUTCDate();
+  };
+
+  self.getUTCHours = function() {
+    return self.origDate.getUTCHours();
+  };
+
+  self.getUTCMinutes = function() {
+    return self.origDate.getUTCMinutes();
+  };
+
+  self.getUTCSeconds = function() {
+    return self.origDate.getUTCSeconds();
+  };
+
+  self.getUTCMilliseconds = function() {
+    return self.origDate.getUTCMilliseconds();
+  };
+
+  self.getDay = function() {
+    return self.date.getDay();
+  };
+
+  // provide this method only on browsers that already have it
+  if (self.toISOString) {
+    self.toISOString = function() {
+      return padNumber(self.origDate.getUTCFullYear(), 4) + '-' +
+            padNumber(self.origDate.getUTCMonth() + 1, 2) + '-' +
+            padNumber(self.origDate.getUTCDate(), 2) + 'T' +
+            padNumber(self.origDate.getUTCHours(), 2) + ':' +
+            padNumber(self.origDate.getUTCMinutes(), 2) + ':' +
+            padNumber(self.origDate.getUTCSeconds(), 2) + '.' +
+            padNumber(self.origDate.getUTCMilliseconds(), 3) + 'Z';
+    };
+  }
+
+  //hide all methods not implemented in this mock that the Date prototype exposes
+  var unimplementedMethods = ['getUTCDay',
+      'getYear', 'setDate', 'setFullYear', 'setHours', 'setMilliseconds',
+      'setMinutes', 'setMonth', 'setSeconds', 'setTime', 'setUTCDate', 'setUTCFullYear',
+      'setUTCHours', 'setUTCMilliseconds', 'setUTCMinutes', 'setUTCMonth', 'setUTCSeconds',
+      'setYear', 'toDateString', 'toGMTString', 'toJSON', 'toLocaleFormat', 'toLocaleString',
+      'toLocaleTimeString', 'toSource', 'toString', 'toTimeString', 'toUTCString', 'valueOf'];
+
+  angular.forEach(unimplementedMethods, function(methodName) {
+    self[methodName] = function() {
+      throw new Error("Method '" + methodName + "' is not implemented in the TzDate mock");
+    };
+  });
+
+  return self;
+};
+
+//make "tzDateInstance instanceof Date" return true
+angular.mock.TzDate.prototype = Date.prototype;
+/* jshint +W101 */
+
+angular.mock.animate = angular.module('ngAnimateMock', ['ng'])
+
+  .config(['$provide', function($provide) {
+
+    var reflowQueue = [];
+    $provide.value('$$animateReflow', function(fn) {
+      var index = reflowQueue.length;
+      reflowQueue.push(fn);
+      return function cancel() {
+        reflowQueue.splice(index, 1);
+      };
+    });
+
+    $provide.decorator('$animate', function($delegate, $$asyncCallback) {
+      var animate = {
+        queue : [],
+        enabled : $delegate.enabled,
+        triggerCallbacks : function() {
+          $$asyncCallback.flush();
+        },
+        triggerReflow : function() {
+          angular.forEach(reflowQueue, function(fn) {
+            fn();
+          });
+          reflowQueue = [];
+        }
+      };
+
+      angular.forEach(
+        ['enter','leave','move','addClass','removeClass','setClass'], function(method) {
+        animate[method] = function() {
+          animate.queue.push({
+            event : method,
+            element : arguments[0],
+            args : arguments
+          });
+          $delegate[method].apply($delegate, arguments);
+        };
+      });
+
+      return animate;
+    });
+
+  }]);
+
+
+/**
+ * @ngdoc function
+ * @name angular.mock.dump
+ * @description
+ *
+ * *NOTE*: this is not an injectable instance, just a globally available function.
+ *
+ * Method for serializing common angular objects (scope, elements, etc..) into strings, useful for
+ * debugging.
+ *
+ * This method is also available on window, where it can be used to display objects on debug
+ * console.
+ *
+ * @param {*} object - any object to turn into string.
+ * @return {string} a serialized string of the argument
+ */
+angular.mock.dump = function(object) {
+  return serialize(object);
+
+  function serialize(object) {
+    var out;
+
+    if (angular.isElement(object)) {
+      object = angular.element(object);
+      out = angular.element('<div></div>');
+      angular.forEach(object, function(element) {
+        out.append(angular.element(element).clone());
+      });
+      out = out.html();
+    } else if (angular.isArray(object)) {
+      out = [];
+      angular.forEach(object, function(o) {
+        out.push(serialize(o));
+      });
+      out = '[ ' + out.join(', ') + ' ]';
+    } else if (angular.isObject(object)) {
+      if (angular.isFunction(object.$eval) && angular.isFunction(object.$apply)) {
+        out = serializeScope(object);
+      } else if (object instanceof Error) {
+        out = object.stack || ('' + object.name + ': ' + object.message);
+      } else {
+        // TODO(i): this prevents methods being logged,
+        // we should have a better way to serialize objects
+        out = angular.toJson(object, true);
+      }
+    } else {
+      out = String(object);
+    }
+
+    return out;
+  }
+
+  function serializeScope(scope, offset) {
+    offset = offset ||  '  ';
+    var log = [offset + 'Scope(' + scope.$id + '): {'];
+    for ( var key in scope ) {
+      if (Object.prototype.hasOwnProperty.call(scope, key) && !key.match(/^(\$|this)/)) {
+        log.push('  ' + key + ': ' + angular.toJson(scope[key]));
+      }
+    }
+    var child = scope.$$childHead;
+    while(child) {
+      log.push(serializeScope(child, offset + '  '));
+      child = child.$$nextSibling;
+    }
+    log.push('}');
+    return log.join('\n' + offset);
+  }
+};
+
+/**
+ * @ngdoc service
+ * @name $httpBackend
+ * @description
+ * Fake HTTP backend implementation suitable for unit testing applications that use the
+ * {@link ng.$http $http service}.
+ *
+ * *Note*: For fake HTTP backend implementation suitable for end-to-end testing or backend-less
+ * development please see {@link ngMockE2E.$httpBackend e2e $httpBackend mock}.
+ *
+ * During unit testing, we want our unit tests to run quickly and have no external dependencies so
+ * we don’t want to send [XHR](https://developer.mozilla.org/en/xmlhttprequest) or
+ * [JSONP](http://en.wikipedia.org/wiki/JSONP) requests to a real server. All we really need is
+ * to verify whether a certain request has been sent or not, or alternatively just let the
+ * application make requests, respond with pre-trained responses and assert that the end result is
+ * what we expect it to be.
+ *
+ * This mock implementation can be used to respond with static or dynamic responses via the
+ * `expect` and `when` apis and their shortcuts (`expectGET`, `whenPOST`, etc).
+ *
+ * When an Angular application needs some data from a server, it calls the $http service, which
+ * sends the request to a real server using $httpBackend service. With dependency injection, it is
+ * easy to inject $httpBackend mock (which has the same API as $httpBackend) and use it to verify
+ * the requests and respond with some testing data without sending a request to a real server.
+ *
+ * There are two ways to specify what test data should be returned as http responses by the mock
+ * backend when the code under test makes http requests:
+ *
+ * - `$httpBackend.expect` - specifies a request expectation
+ * - `$httpBackend.when` - specifies a backend definition
+ *
+ *
+ * # Request Expectations vs Backend Definitions
+ *
+ * Request expectations provide a way to make assertions about requests made by the application and
+ * to define responses for those requests. The test will fail if the expected requests are not made
+ * or they are made in the wrong order.
+ *
+ * Backend definitions allow you to define a fake backend for your application which doesn't assert
+ * if a particular request was made or not, it just returns a trained response if a request is made.
+ * The test will pass whether or not the request gets made during testing.
+ *
+ *
+ * <table class="table">
+ *   <tr><th width="220px"></th><th>Request expectations</th><th>Backend definitions</th></tr>
+ *   <tr>
+ *     <th>Syntax</th>
+ *     <td>.expect(...).respond(...)</td>
+ *     <td>.when(...).respond(...)</td>
+ *   </tr>
+ *   <tr>
+ *     <th>Typical usage</th>
+ *     <td>strict unit tests</td>
+ *     <td>loose (black-box) unit testing</td>
+ *   </tr>
+ *   <tr>
+ *     <th>Fulfills multiple requests</th>
+ *     <td>NO</td>
+ *     <td>YES</td>
+ *   </tr>
+ *   <tr>
+ *     <th>Order of requests matters</th>
+ *     <td>YES</td>
+ *     <td>NO</td>
+ *   </tr>
+ *   <tr>
+ *     <th>Request required</th>
+ *     <td>YES</td>
+ *     <td>NO</td>
+ *   </tr>
+ *   <tr>
+ *     <th>Response required</th>
+ *     <td>optional (see below)</td>
+ *     <td>YES</td>
+ *   </tr>
+ * </table>
+ *
+ * In cases where both backend definitions and request expectations are specified during unit
+ * testing, the request expectations are evaluated first.
+ *
+ * If a request expectation has no response specified, the algorithm will search your backend
+ * definitions for an appropriate response.
+ *
+ * If a request didn't match any expectation or if the expectation doesn't have the response
+ * defined, the backend definitions are evaluated in sequential order to see if any of them match
+ * the request. The response from the first matched definition is returned.
+ *
+ *
+ * # Flushing HTTP requests
+ *
+ * The $httpBackend used in production always responds to requests asynchronously. If we preserved
+ * this behavior in unit testing, we'd have to create async unit tests, which are hard to write,
+ * to follow and to maintain. But neither can the testing mock respond synchronously; that would
+ * change the execution of the code under test. For this reason, the mock $httpBackend has a
+ * `flush()` method, which allows the test to explicitly flush pending requests. This preserves
+ * the async api of the backend, while allowing the test to execute synchronously.
+ *
+ *
+ * # Unit testing with mock $httpBackend
+ * The following code shows how to setup and use the mock backend when unit testing a controller.
+ * First we create the controller under test:
+ *
+  ```js
+  // The controller code
+  function MyController($scope, $http) {
+    var authToken;
+
+    $http.get('/auth.py').success(function(data, status, headers) {
+      authToken = headers('A-Token');
+      $scope.user = data;
+    });
+
+    $scope.saveMessage = function(message) {
+      var headers = { 'Authorization': authToken };
+      $scope.status = 'Saving...';
+
+      $http.post('/add-msg.py', message, { headers: headers } ).success(function(response) {
+        $scope.status = '';
+      }).error(function() {
+        $scope.status = 'ERROR!';
+      });
+    };
+  }
+  ```
+ *
+ * Now we setup the mock backend and create the test specs:
+ *
+  ```js
+    // testing controller
+    describe('MyController', function() {
+       var $httpBackend, $rootScope, createController;
+
+       beforeEach(inject(function($injector) {
+         // Set up the mock http service responses
+         $httpBackend = $injector.get('$httpBackend');
+         // backend definition common for all tests
+         $httpBackend.when('GET', '/auth.py').respond({userId: 'userX'}, {'A-Token': 'xxx'});
+
+         // Get hold of a scope (i.e. the root scope)
+         $rootScope = $injector.get('$rootScope');
+         // The $controller service is used to create instances of controllers
+         var $controller = $injector.get('$controller');
+
+         createController = function() {
+           return $controller('MyController', {'$scope' : $rootScope });
+         };
+       }));
+
+
+       afterEach(function() {
+         $httpBackend.verifyNoOutstandingExpectation();
+         $httpBackend.verifyNoOutstandingRequest();
+       });
+
+
+       it('should fetch authentication token', function() {
+         $httpBackend.expectGET('/auth.py');
+         var controller = createController();
+         $httpBackend.flush();
+       });
+
+
+       it('should send msg to server', function() {
+         var controller = createController();
+         $httpBackend.flush();
+
+         // now you don’t care about the authentication, but
+         // the controller will still send the request and
+         // $httpBackend will respond without you having to
+         // specify the expectation and response for this request
+
+         $httpBackend.expectPOST('/add-msg.py', 'message content').respond(201, '');
+         $rootScope.saveMessage('message content');
+         expect($rootScope.status).toBe('Saving...');
+         $httpBackend.flush();
+         expect($rootScope.status).toBe('');
+       });
+
+
+       it('should send auth header', function() {
+         var controller = createController();
+         $httpBackend.flush();
+
+         $httpBackend.expectPOST('/add-msg.py', undefined, function(headers) {
+           // check if the header was send, if it wasn't the expectation won't
+           // match the request and the test will fail
+           return headers['Authorization'] == 'xxx';
+         }).respond(201, '');
+
+         $rootScope.saveMessage('whatever');
+         $httpBackend.flush();
+       });
+    });
+   ```
+ */
+angular.mock.$HttpBackendProvider = function() {
+  this.$get = ['$rootScope', createHttpBackendMock];
+};
+
+/**
+ * General factory function for $httpBackend mock.
+ * Returns instance for unit testing (when no arguments specified):
+ *   - passing through is disabled
+ *   - auto flushing is disabled
+ *
+ * Returns instance for e2e testing (when `$delegate` and `$browser` specified):
+ *   - passing through (delegating request to real backend) is enabled
+ *   - auto flushing is enabled
+ *
+ * @param {Object=} $delegate Real $httpBackend instance (allow passing through if specified)
+ * @param {Object=} $browser Auto-flushing enabled if specified
+ * @return {Object} Instance of $httpBackend mock
+ */
+function createHttpBackendMock($rootScope, $delegate, $browser) {
+  var definitions = [],
+      expectations = [],
+      responses = [],
+      responsesPush = angular.bind(responses, responses.push),
+      copy = angular.copy;
+
+  function createResponse(status, data, headers, statusText) {
+    if (angular.isFunction(status)) return status;
+
+    return function() {
+      return angular.isNumber(status)
+          ? [status, data, headers, statusText]
+          : [200, status, data];
+    };
+  }
+
+  // TODO(vojta): change params to: method, url, data, headers, callback
+  function $httpBackend(method, url, data, callback, headers, timeout, withCredentials) {
+    var xhr = new MockXhr(),
+        expectation = expectations[0],
+        wasExpected = false;
+
+    function prettyPrint(data) {
+      return (angular.isString(data) || angular.isFunction(data) || data instanceof RegExp)
+          ? data
+          : angular.toJson(data);
+    }
+
+    function wrapResponse(wrapped) {
+      if (!$browser && timeout && timeout.then) timeout.then(handleTimeout);
+
+      return handleResponse;
+
+      function handleResponse() {
+        var response = wrapped.response(method, url, data, headers);
+        xhr.$$respHeaders = response[2];
+        callback(copy(response[0]), copy(response[1]), xhr.getAllResponseHeaders(),
+                 copy(response[3] || ''));
+      }
+
+      function handleTimeout() {
+        for (var i = 0, ii = responses.length; i < ii; i++) {
+          if (responses[i] === handleResponse) {
+            responses.splice(i, 1);
+            callback(-1, undefined, '');
+            break;
+          }
+        }
+      }
+    }
+
+    if (expectation && expectation.match(method, url)) {
+      if (!expectation.matchData(data))
+        throw new Error('Expected ' + expectation + ' with different data\n' +
+            'EXPECTED: ' + prettyPrint(expectation.data) + '\nGOT:      ' + data);
+
+      if (!expectation.matchHeaders(headers))
+        throw new Error('Expected ' + expectation + ' with different headers\n' +
+                        'EXPECTED: ' + prettyPrint(expectation.headers) + '\nGOT:      ' +
+                        prettyPrint(headers));
+
+      expectations.shift();
+
+      if (expectation.response) {
+        responses.push(wrapResponse(expectation));
+        return;
+      }
+      wasExpected = true;
+    }
+
+    var i = -1, definition;
+    while ((definition = definitions[++i])) {
+      if (definition.match(method, url, data, headers || {})) {
+        if (definition.response) {
+          // if $browser specified, we do auto flush all requests
+          ($browser ? $browser.defer : responsesPush)(wrapResponse(definition));
+        } else if (definition.passThrough) {
+          $delegate(method, url, data, callback, headers, timeout, withCredentials);
+        } else throw new Error('No response defined !');
+        return;
+      }
+    }
+    throw wasExpected ?
+        new Error('No response defined !') :
+        new Error('Unexpected request: ' + method + ' ' + url + '\n' +
+                  (expectation ? 'Expected ' + expectation : 'No more request expected'));
+  }
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#when
+   * @description
+   * Creates a new backend definition.
+   *
+   * @param {string} method HTTP method.
+   * @param {string|RegExp} url HTTP url.
+   * @param {(string|RegExp|function(string))=} data HTTP request body or function that receives
+   *   data string and returns true if the data is as expected.
+   * @param {(Object|function(Object))=} headers HTTP headers or function that receives http header
+   *   object and returns true if the headers match the current definition.
+   * @returns {requestHandler} Returns an object with `respond` method that controls how a matched
+   *   request is handled.
+   *
+   *  - respond –
+   *      `{function([status,] data[, headers, statusText])
+   *      | function(function(method, url, data, headers)}`
+   *    – The respond method takes a set of static data to be returned or a function that can
+   *    return an array containing response status (number), response data (string), response
+   *    headers (Object), and the text for the status (string).
+   */
+  $httpBackend.when = function(method, url, data, headers) {
+    var definition = new MockHttpExpectation(method, url, data, headers),
+        chain = {
+          respond: function(status, data, headers, statusText) {
+            definition.response = createResponse(status, data, headers, statusText);
+          }
+        };
+
+    if ($browser) {
+      chain.passThrough = function() {
+        definition.passThrough = true;
+      };
+    }
+
+    definitions.push(definition);
+    return chain;
+  };
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#whenGET
+   * @description
+   * Creates a new backend definition for GET requests. For more info see `when()`.
+   *
+   * @param {string|RegExp} url HTTP url.
+   * @param {(Object|function(Object))=} headers HTTP headers.
+   * @returns {requestHandler} Returns an object with `respond` method that control how a matched
+   * request is handled.
+   */
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#whenHEAD
+   * @description
+   * Creates a new backend definition for HEAD requests. For more info see `when()`.
+   *
+   * @param {string|RegExp} url HTTP url.
+   * @param {(Object|function(Object))=} headers HTTP headers.
+   * @returns {requestHandler} Returns an object with `respond` method that control how a matched
+   * request is handled.
+   */
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#whenDELETE
+   * @description
+   * Creates a new backend definition for DELETE requests. For more info see `when()`.
+   *
+   * @param {string|RegExp} url HTTP url.
+   * @param {(Object|function(Object))=} headers HTTP headers.
+   * @returns {requestHandler} Returns an object with `respond` method that control how a matched
+   * request is handled.
+   */
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#whenPOST
+   * @description
+   * Creates a new backend definition for POST requests. For more info see `when()`.
+   *
+   * @param {string|RegExp} url HTTP url.
+   * @param {(string|RegExp|function(string))=} data HTTP request body or function that receives
+   *   data string and returns true if the data is as expected.
+   * @param {(Object|function(Object))=} headers HTTP headers.
+   * @returns {requestHandler} Returns an object with `respond` method that control how a matched
+   * request is handled.
+   */
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#whenPUT
+   * @description
+   * Creates a new backend definition for PUT requests.  For more info see `when()`.
+   *
+   * @param {string|RegExp} url HTTP url.
+   * @param {(string|RegExp|function(string))=} data HTTP request body or function that receives
+   *   data string and returns true if the data is as expected.
+   * @param {(Object|function(Object))=} headers HTTP headers.
+   * @returns {requestHandler} Returns an object with `respond` method that control how a matched
+   * request is handled.
+   */
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#whenJSONP
+   * @description
+   * Creates a new backend definition for JSONP requests. For more info see `when()`.
+   *
+   * @param {string|RegExp} url HTTP url.
+   * @returns {requestHandler} Returns an object with `respond` method that control how a matched
+   * request is handled.
+   */
+  createShortMethods('when');
+
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#expect
+   * @description
+   * Creates a new request expectation.
+   *
+   * @param {string} method HTTP method.
+   * @param {string|RegExp} url HTTP url.
+   * @param {(string|RegExp|function(string)|Object)=} data HTTP request body or function that
+   *  receives data string and returns true if the data is as expected, or Object if request body
+   *  is in JSON format.
+   * @param {(Object|function(Object))=} headers HTTP headers or function that receives http header
+   *   object and returns true if the headers match the current expectation.
+   * @returns {requestHandler} Returns an object with `respond` method that control how a matched
+   *  request is handled.
+   *
+   *  - respond –
+   *    `{function([status,] data[, headers, statusText])
+   *    | function(function(method, url, data, headers)}`
+   *    – The respond method takes a set of static data to be returned or a function that can
+   *    return an array containing response status (number), response data (string), response
+   *    headers (Object), and the text for the status (string).
+   */
+  $httpBackend.expect = function(method, url, data, headers) {
+    var expectation = new MockHttpExpectation(method, url, data, headers);
+    expectations.push(expectation);
+    return {
+      respond: function (status, data, headers, statusText) {
+        expectation.response = createResponse(status, data, headers, statusText);
+      }
+    };
+  };
+
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#expectGET
+   * @description
+   * Creates a new request expectation for GET requests. For more info see `expect()`.
+   *
+   * @param {string|RegExp} url HTTP url.
+   * @param {Object=} headers HTTP headers.
+   * @returns {requestHandler} Returns an object with `respond` method that control how a matched
+   * request is handled. See #expect for more info.
+   */
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#expectHEAD
+   * @description
+   * Creates a new request expectation for HEAD requests. For more info see `expect()`.
+   *
+   * @param {string|RegExp} url HTTP url.
+   * @param {Object=} headers HTTP headers.
+   * @returns {requestHandler} Returns an object with `respond` method that control how a matched
+   *   request is handled.
+   */
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#expectDELETE
+   * @description
+   * Creates a new request expectation for DELETE requests. For more info see `expect()`.
+   *
+   * @param {string|RegExp} url HTTP url.
+   * @param {Object=} headers HTTP headers.
+   * @returns {requestHandler} Returns an object with `respond` method that control how a matched
+   *   request is handled.
+   */
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#expectPOST
+   * @description
+   * Creates a new request expectation for POST requests. For more info see `expect()`.
+   *
+   * @param {string|RegExp} url HTTP url.
+   * @param {(string|RegExp|function(string)|Object)=} data HTTP request body or function that
+   *  receives data string and returns true if the data is as expected, or Object if request body
+   *  is in JSON format.
+   * @param {Object=} headers HTTP headers.
+   * @returns {requestHandler} Returns an object with `respond` method that control how a matched
+   *   request is handled.
+   */
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#expectPUT
+   * @description
+   * Creates a new request expectation for PUT requests. For more info see `expect()`.
+   *
+   * @param {string|RegExp} url HTTP url.
+   * @param {(string|RegExp|function(string)|Object)=} data HTTP request body or function that
+   *  receives data string and returns true if the data is as expected, or Object if request body
+   *  is in JSON format.
+   * @param {Object=} headers HTTP headers.
+   * @returns {requestHandler} Returns an object with `respond` method that control how a matched
+   *   request is handled.
+   */
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#expectPATCH
+   * @description
+   * Creates a new request expectation for PATCH requests. For more info see `expect()`.
+   *
+   * @param {string|RegExp} url HTTP url.
+   * @param {(string|RegExp|function(string)|Object)=} data HTTP request body or function that
+   *  receives data string and returns true if the data is as expected, or Object if request body
+   *  is in JSON format.
+   * @param {Object=} headers HTTP headers.
+   * @returns {requestHandler} Returns an object with `respond` method that control how a matched
+   *   request is handled.
+   */
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#expectJSONP
+   * @description
+   * Creates a new request expectation for JSONP requests. For more info see `expect()`.
+   *
+   * @param {string|RegExp} url HTTP url.
+   * @returns {requestHandler} Returns an object with `respond` method that control how a matched
+   *   request is handled.
+   */
+  createShortMethods('expect');
+
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#flush
+   * @description
+   * Flushes all pending requests using the trained responses.
+   *
+   * @param {number=} count Number of responses to flush (in the order they arrived). If undefined,
+   *   all pending requests will be flushed. If there are no pending requests when the flush method
+   *   is called an exception is thrown (as this typically a sign of programming error).
+   */
+  $httpBackend.flush = function(count) {
+    $rootScope.$digest();
+    if (!responses.length) throw new Error('No pending request to flush !');
+
+    if (angular.isDefined(count)) {
+      while (count--) {
+        if (!responses.length) throw new Error('No more pending request to flush !');
+        responses.shift()();
+      }
+    } else {
+      while (responses.length) {
+        responses.shift()();
+      }
+    }
+    $httpBackend.verifyNoOutstandingExpectation();
+  };
+
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#verifyNoOutstandingExpectation
+   * @description
+   * Verifies that all of the requests defined via the `expect` api were made. If any of the
+   * requests were not made, verifyNoOutstandingExpectation throws an exception.
+   *
+   * Typically, you would call this method following each test case that asserts requests using an
+   * "afterEach" clause.
+   *
+   * ```js
+   *   afterEach($httpBackend.verifyNoOutstandingExpectation);
+   * ```
+   */
+  $httpBackend.verifyNoOutstandingExpectation = function() {
+    $rootScope.$digest();
+    if (expectations.length) {
+      throw new Error('Unsatisfied requests: ' + expectations.join(', '));
+    }
+  };
+
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#verifyNoOutstandingRequest
+   * @description
+   * Verifies that there are no outstanding requests that need to be flushed.
+   *
+   * Typically, you would call this method following each test case that asserts requests using an
+   * "afterEach" clause.
+   *
+   * ```js
+   *   afterEach($httpBackend.verifyNoOutstandingRequest);
+   * ```
+   */
+  $httpBackend.verifyNoOutstandingRequest = function() {
+    if (responses.length) {
+      throw new Error('Unflushed requests: ' + responses.length);
+    }
+  };
+
+
+  /**
+   * @ngdoc method
+   * @name $httpBackend#resetExpectations
+   * @description
+   * Resets all request expectations, but preserves all backend definitions. Typically, you would
+   * call resetExpectations during a multiple-phase test when you want to reuse the same instance of
+   * $httpBackend mock.
+   */
+  $httpBackend.resetExpectations = function() {
+    expectations.length = 0;
+    responses.length = 0;
+  };
+
+  return $httpBackend;
+
+
+  function createShortMethods(prefix) {
+    angular.forEach(['GET', 'DELETE', 'JSONP'], function(method) {
+     $httpBackend[prefix + method] = function(url, headers) {
+       return $httpBackend[prefix](method, url, undefined, headers);
+     };
+    });
+
+    angular.forEach(['PUT', 'POST', 'PATCH'], function(method) {
+      $httpBackend[prefix + method] = function(url, data, headers) {
+        return $httpBackend[prefix](method, url, data, headers);
+      };
+    });
+  }
+}
+
+function MockHttpExpectation(method, url, data, headers) {
+
+  this.data = data;
+  this.headers = headers;
+
+  this.match = function(m, u, d, h) {
+    if (method != m) return false;
+    if (!this.matchUrl(u)) return false;
+    if (angular.isDefined(d) && !this.matchData(d)) return false;
+    if (angular.isDefined(h) && !this.matchHeaders(h)) return false;
+    return true;
+  };
+
+  this.matchUrl = function(u) {
+    if (!url) return true;
+    if (angular.isFunction(url.test)) return url.test(u);
+    return url == u;
+  };
+
+  this.matchHeaders = function(h) {
+    if (angular.isUndefined(headers)) return true;
+    if (angular.isFunction(headers)) return headers(h);
+    return angular.equals(headers, h);
+  };
+
+  this.matchData = function(d) {
+    if (angular.isUndefined(data)) return true;
+    if (data && angular.isFunction(data.test)) return data.test(d);
+    if (data && angular.isFunction(data)) return data(d);
+    if (data && !angular.isString(data)) return angular.equals(data, angular.fromJson(d));
+    return data == d;
+  };
+
+  this.toString = function() {
+    return method + ' ' + url;
+  };
+}
+
+function createMockXhr() {
+  return new MockXhr();
+}
+
+function MockXhr() {
+
+  // hack for testing $http, $httpBackend
+  MockXhr.$$lastInstance = this;
+
+  this.open = function(method, url, async) {
+    this.$$method = method;
+    this.$$url = url;
+    this.$$async = async;
+    this.$$reqHeaders = {};
+    this.$$respHeaders = {};
+  };
+
+  this.send = function(data) {
+    this.$$data = data;
+  };
+
+  this.setRequestHeader = function(key, value) {
+    this.$$reqHeaders[key] = value;
+  };
+
+  this.getResponseHeader = function(name) {
+    // the lookup must be case insensitive,
+    // that's why we try two quick lookups first and full scan last
+    var header = this.$$respHeaders[name];
+    if (header) return header;
+
+    name = angular.lowercase(name);
+    header = this.$$respHeaders[name];
+    if (header) return header;
+
+    header = undefined;
+    angular.forEach(this.$$respHeaders, function(headerVal, headerName) {
+      if (!header && angular.lowercase(headerName) == name) header = headerVal;
+    });
+    return header;
+  };
+
+  this.getAllResponseHeaders = function() {
+    var lines = [];
+
+    angular.forEach(this.$$respHeaders, function(value, key) {
+      lines.push(key + ': ' + value);
+    });
+    return lines.join('\n');
+  };
+
+  this.abort = angular.noop;
+}
+
+
+/**
+ * @ngdoc service
+ * @name $timeout
+ * @description
+ *
+ * This service is just a simple decorator for {@link ng.$timeout $timeout} service
+ * that adds a "flush" and "verifyNoPendingTasks" methods.
+ */
+
+angular.mock.$TimeoutDecorator = function($delegate, $browser) {
+
+  /**
+   * @ngdoc method
+   * @name $timeout#flush
+   * @description
+   *
+   * Flushes the queue of pending tasks.
+   *
+   * @param {number=} delay maximum timeout amount to flush up until
+   */
+  $delegate.flush = function(delay) {
+    $browser.defer.flush(delay);
+  };
+
+  /**
+   * @ngdoc method
+   * @name $timeout#verifyNoPendingTasks
+   * @description
+   *
+   * Verifies that there are no pending tasks that need to be flushed.
+   */
+  $delegate.verifyNoPendingTasks = function() {
+    if ($browser.deferredFns.length) {
+      throw new Error('Deferred tasks to flush (' + $browser.deferredFns.length + '): ' +
+          formatPendingTasksAsString($browser.deferredFns));
+    }
+  };
+
+  function formatPendingTasksAsString(tasks) {
+    var result = [];
+    angular.forEach(tasks, function(task) {
+      result.push('{id: ' + task.id + ', ' + 'time: ' + task.time + '}');
+    });
+
+    return result.join(', ');
+  }
+
+  return $delegate;
+};
+
+angular.mock.$RAFDecorator = function($delegate) {
+  var queue = [];
+  var rafFn = function(fn) {
+    var index = queue.length;
+    queue.push(fn);
+    return function() {
+      queue.splice(index, 1);
+    };
+  };
+
+  rafFn.supported = $delegate.supported;
+
+  rafFn.flush = function() {
+    if(queue.length === 0) {
+      throw new Error('No rAF callbacks present');
+    }
+
+    var length = queue.length;
+    for(var i=0;i<length;i++) {
+      queue[i]();
+    }
+
+    queue = [];
+  };
+
+  return rafFn;
+};
+
+angular.mock.$AsyncCallbackDecorator = function($delegate) {
+  var callbacks = [];
+  var addFn = function(fn) {
+    callbacks.push(fn);
+  };
+  addFn.flush = function() {
+    angular.forEach(callbacks, function(fn) {
+      fn();
+    });
+    callbacks = [];
+  };
+  return addFn;
+};
+
+/**
+ *
+ */
+angular.mock.$RootElementProvider = function() {
+  this.$get = function() {
+    return angular.element('<div ng-app></div>');
+  };
+};
+
+/**
+ * @ngdoc module
+ * @name ngMock
+ * @packageName angular-mocks
+ * @description
+ *
+ * # ngMock
+ *
+ * The `ngMock` module provides support to inject and mock Angular services into unit tests.
+ * In addition, ngMock also extends various core ng services such that they can be
+ * inspected and controlled in a synchronous manner within test code.
+ *
+ *
+ * <div doc-module-components="ngMock"></div>
+ *
+ */
+angular.module('ngMock', ['ng']).provider({
+  $browser: angular.mock.$BrowserProvider,
+  $exceptionHandler: angular.mock.$ExceptionHandlerProvider,
+  $log: angular.mock.$LogProvider,
+  $interval: angular.mock.$IntervalProvider,
+  $httpBackend: angular.mock.$HttpBackendProvider,
+  $rootElement: angular.mock.$RootElementProvider
+}).config(['$provide', function($provide) {
+  $provide.decorator('$timeout', angular.mock.$TimeoutDecorator);
+  $provide.decorator('$$rAF', angular.mock.$RAFDecorator);
+  $provide.decorator('$$asyncCallback', angular.mock.$AsyncCallbackDecorator);
+}]);
+
+/**
+ * @ngdoc module
+ * @name ngMockE2E
+ * @module ngMockE2E
+ * @packageName angular-mocks
+ * @description
+ *
+ * The `ngMockE2E` is an angular module which contains mocks suitable for end-to-end testing.
+ * Currently there is only one mock present in this module -
+ * the {@link ngMockE2E.$httpBackend e2e $httpBackend} mock.
+ */
+angular.module('ngMockE2E', ['ng']).config(['$provide', function($provide) {
+  $provide.decorator('$httpBackend', angular.mock.e2e.$httpBackendDecorator);
+}]);
+
+/**
+ * @ngdoc service
+ * @name $httpBackend
+ * @module ngMockE2E
+ * @description
+ * Fake HTTP backend implementation suitable for end-to-end testing or backend-less development of
+ * applications that use the {@link ng.$http $http service}.
+ *
+ * *Note*: For fake http backend implementation suitable for unit testing please see
+ * {@link ngMock.$httpBackend unit-testing $httpBackend mock}.
+ *
+ * This implementation can be used to respond with static or dynamic responses via the `when` api
+ * and its shortcuts (`whenGET`, `whenPOST`, etc) and optionally pass through requests to the
+ * real $httpBackend for specific requests (e.g. to interact with certain remote apis or to fetch
+ * templates from a webserver).
+ *
+ * As opposed to unit-testing, in an end-to-end testing scenario or in scenario when an application
+ * is being developed with the real backend api replaced with a mock, it is often desirable for
+ * certain category of requests to bypass the mock and issue a real http request (e.g. to fetch
+ * templates or static files from the webserver). To configure the backend with this behavior
+ * use the `passThrough` request handler of `when` instead of `respond`.
+ *
+ * Additionally, we don't want to manually have to flush mocked out requests like we do during unit
+ * testing. For this reason the e2e $httpBackend flushes mocked out requests
+ * automatically, closely simulating the behavior of the XMLHttpRequest object.
+ *
+ * To setup the application to run with this http backend, you have to create a module that depends
+ * on the `ngMockE2E` and your application modules and defines the fake backend:
+ *
+ * ```js
+ *   myAppDev = angular.module('myAppDev', ['myApp', 'ngMockE2E']);
+ *   myAppDev.run(function($httpBackend) {
+ *     phones = [{name: 'phone1'}, {name: 'phone2'}];
+ *
+ *     // returns the current list of phones
+ *     $httpBackend.whenGET('/phones').respond(phones);
+ *
+ *     // adds a new phone to the phones array
+ *     $httpBackend.whenPOST('/phones').respond(function(method, url, data) {
+ *       var phone = angular.fromJson(data);
+ *       phones.push(phone);
+ *       return [200, phone, {}];
+ *     });
+ *     $httpBackend.whenGET(/^\/templates\//).passThrough();
+ *     //...
+ *   });
+ * ```
+ *
+ * Afterwards, bootstrap your app with this new module.
+ */
+
+/**
+ * @ngdoc method
+ * @name $httpBackend#when
+ * @module ngMockE2E
+ * @description
+ * Creates a new backend definition.
+ *
+ * @param {string} method HTTP method.
+ * @param {string|RegExp} url HTTP url.
+ * @param {(string|RegExp)=} data HTTP request body.
+ * @param {(Object|function(Object))=} headers HTTP headers or function that receives http header
+ *   object and returns true if the headers match the current definition.
+ * @returns {requestHandler} Returns an object with `respond` and `passThrough` methods that
+ *   control how a matched request is handled.
+ *
+ *  - respond –
+ *    `{function([status,] data[, headers, statusText])
+ *    | function(function(method, url, data, headers)}`
+ *    – The respond method takes a set of static data to be returned or a function that can return
+ *    an array containing response status (number), response data (string), response headers
+ *    (Object), and the text for the status (string).
+ *  - passThrough – `{function()}` – Any request matching a backend definition with
+ *    `passThrough` handler will be passed through to the real backend (an XHR request will be made
+ *    to the server.)
+ */
+
+/**
+ * @ngdoc method
+ * @name $httpBackend#whenGET
+ * @module ngMockE2E
+ * @description
+ * Creates a new backend definition for GET requests. For more info see `when()`.
+ *
+ * @param {string|RegExp} url HTTP url.
+ * @param {(Object|function(Object))=} headers HTTP headers.
+ * @returns {requestHandler} Returns an object with `respond` and `passThrough` methods that
+ *   control how a matched request is handled.
+ */
+
+/**
+ * @ngdoc method
+ * @name $httpBackend#whenHEAD
+ * @module ngMockE2E
+ * @description
+ * Creates a new backend definition for HEAD requests. For more info see `when()`.
+ *
+ * @param {string|RegExp} url HTTP url.
+ * @param {(Object|function(Object))=} headers HTTP headers.
+ * @returns {requestHandler} Returns an object with `respond` and `passThrough` methods that
+ *   control how a matched request is handled.
+ */
+
+/**
+ * @ngdoc method
+ * @name $httpBackend#whenDELETE
+ * @module ngMockE2E
+ * @description
+ * Creates a new backend definition for DELETE requests. For more info see `when()`.
+ *
+ * @param {string|RegExp} url HTTP url.
+ * @param {(Object|function(Object))=} headers HTTP headers.
+ * @returns {requestHandler} Returns an object with `respond` and `passThrough` methods that
+ *   control how a matched request is handled.
+ */
+
+/**
+ * @ngdoc method
+ * @name $httpBackend#whenPOST
+ * @module ngMockE2E
+ * @description
+ * Creates a new backend definition for POST requests. For more info see `when()`.
+ *
+ * @param {string|RegExp} url HTTP url.
+ * @param {(string|RegExp)=} data HTTP request body.
+ * @param {(Object|function(Object))=} headers HTTP headers.
+ * @returns {requestHandler} Returns an object with `respond` and `passThrough` methods that
+ *   control how a matched request is handled.
+ */
+
+/**
+ * @ngdoc method
+ * @name $httpBackend#whenPUT
+ * @module ngMockE2E
+ * @description
+ * Creates a new backend definition for PUT requests.  For more info see `when()`.
+ *
+ * @param {string|RegExp} url HTTP url.
+ * @param {(string|RegExp)=} data HTTP request body.
+ * @param {(Object|function(Object))=} headers HTTP headers.
+ * @returns {requestHandler} Returns an object with `respond` and `passThrough` methods that
+ *   control how a matched request is handled.
+ */
+
+/**
+ * @ngdoc method
+ * @name $httpBackend#whenPATCH
+ * @module ngMockE2E
+ * @description
+ * Creates a new backend definition for PATCH requests.  For more info see `when()`.
+ *
+ * @param {string|RegExp} url HTTP url.
+ * @param {(string|RegExp)=} data HTTP request body.
+ * @param {(Object|function(Object))=} headers HTTP headers.
+ * @returns {requestHandler} Returns an object with `respond` and `passThrough` methods that
+ *   control how a matched request is handled.
+ */
+
+/**
+ * @ngdoc method
+ * @name $httpBackend#whenJSONP
+ * @module ngMockE2E
+ * @description
+ * Creates a new backend definition for JSONP requests. For more info see `when()`.
+ *
+ * @param {string|RegExp} url HTTP url.
+ * @returns {requestHandler} Returns an object with `respond` and `passThrough` methods that
+ *   control how a matched request is handled.
+ */
+angular.mock.e2e = {};
+angular.mock.e2e.$httpBackendDecorator =
+  ['$rootScope', '$delegate', '$browser', createHttpBackendMock];
+
+
+angular.mock.clearDataCache = function() {
+  var key,
+      cache = angular.element.cache;
+
+  for(key in cache) {
+    if (Object.prototype.hasOwnProperty.call(cache,key)) {
+      var handle = cache[key].handle;
+
+      handle && angular.element(handle.elem).off();
+      delete cache[key];
+    }
+  }
+};
+
+
+if(window.jasmine || window.mocha) {
+
+  var currentSpec = null,
+      isSpecRunning = function() {
+        return !!currentSpec;
+      };
+
+
+  (window.beforeEach || window.setup)(function() {
+    currentSpec = this;
+  });
+
+  (window.afterEach || window.teardown)(function() {
+    var injector = currentSpec.$injector;
+
+    angular.forEach(currentSpec.$modules, function(module) {
+      if (module && module.$$hashKey) {
+        module.$$hashKey = undefined;
+      }
+    });
+
+    currentSpec.$injector = null;
+    currentSpec.$modules = null;
+    currentSpec = null;
+
+    if (injector) {
+      injector.get('$rootElement').off();
+      injector.get('$browser').pollFns.length = 0;
+    }
+
+    angular.mock.clearDataCache();
+
+    // clean up jquery's fragment cache
+    angular.forEach(angular.element.fragments, function(val, key) {
+      delete angular.element.fragments[key];
+    });
+
+    MockXhr.$$lastInstance = null;
+
+    angular.forEach(angular.callbacks, function(val, key) {
+      delete angular.callbacks[key];
+    });
+    angular.callbacks.counter = 0;
+  });
+
+  /**
+   * @ngdoc function
+   * @name angular.mock.module
+   * @description
+   *
+   * *NOTE*: This function is also published on window for easy access.<br>
+   *
+   * This function registers a module configuration code. It collects the configuration information
+   * which will be used when the injector is created by {@link angular.mock.inject inject}.
+   *
+   * See {@link angular.mock.inject inject} for usage example
+   *
+   * @param {...(string|Function|Object)} fns any number of modules which are represented as string
+   *        aliases or as anonymous module initialization functions. The modules are used to
+   *        configure the injector. The 'ng' and 'ngMock' modules are automatically loaded. If an
+   *        object literal is passed they will be registered as values in the module, the key being
+   *        the module name and the value being what is returned.
+   */
+  window.module = angular.mock.module = function() {
+    var moduleFns = Array.prototype.slice.call(arguments, 0);
+    return isSpecRunning() ? workFn() : workFn;
+    /////////////////////
+    function workFn() {
+      if (currentSpec.$injector) {
+        throw new Error('Injector already created, can not register a module!');
+      } else {
+        var modules = currentSpec.$modules || (currentSpec.$modules = []);
+        angular.forEach(moduleFns, function(module) {
+          if (angular.isObject(module) && !angular.isArray(module)) {
+            modules.push(function($provide) {
+              angular.forEach(module, function(value, key) {
+                $provide.value(key, value);
+              });
+            });
+          } else {
+            modules.push(module);
+          }
+        });
+      }
+    }
+  };
+
+  /**
+   * @ngdoc function
+   * @name angular.mock.inject
+   * @description
+   *
+   * *NOTE*: This function is also published on window for easy access.<br>
+   *
+   * The inject function wraps a function into an injectable function. The inject() creates new
+   * instance of {@link auto.$injector $injector} per test, which is then used for
+   * resolving references.
+   *
+   *
+   * ## Resolving References (Underscore Wrapping)
+   * Often, we would like to inject a reference once, in a `beforeEach()` block and reuse this
+   * in multiple `it()` clauses. To be able to do this we must assign the reference to a variable
+   * that is declared in the scope of the `describe()` block. Since we would, most likely, want
+   * the variable to have the same name of the reference we have a problem, since the parameter
+   * to the `inject()` function would hide the outer variable.
+   *
+   * To help with this, the injected parameters can, optionally, be enclosed with underscores.
+   * These are ignored by the injector when the reference name is resolved.
+   *
+   * For example, the parameter `_myService_` would be resolved as the reference `myService`.
+   * Since it is available in the function body as _myService_, we can then assign it to a variable
+   * defined in an outer scope.
+   *
+   * ```
+   * // Defined out reference variable outside
+   * var myService;
+   *
+   * // Wrap the parameter in underscores
+   * beforeEach( inject( function(_myService_){
+   *   myService = _myService_;
+   * }));
+   *
+   * // Use myService in a series of tests.
+   * it('makes use of myService', function() {
+   *   myService.doStuff();
+   * });
+   *
+   * ```
+   *
+   * See also {@link angular.mock.module angular.mock.module}
+   *
+   * ## Example
+   * Example of what a typical jasmine tests looks like with the inject method.
+   * ```js
+   *
+   *   angular.module('myApplicationModule', [])
+   *       .value('mode', 'app')
+   *       .value('version', 'v1.0.1');
+   *
+   *
+   *   describe('MyApp', function() {
+   *
+   *     // You need to load modules that you want to test,
+   *     // it loads only the "ng" module by default.
+   *     beforeEach(module('myApplicationModule'));
+   *
+   *
+   *     // inject() is used to inject arguments of all given functions
+   *     it('should provide a version', inject(function(mode, version) {
+   *       expect(version).toEqual('v1.0.1');
+   *       expect(mode).toEqual('app');
+   *     }));
+   *
+   *
+   *     // The inject and module method can also be used inside of the it or beforeEach
+   *     it('should override a version and test the new version is injected', function() {
+   *       // module() takes functions or strings (module aliases)
+   *       module(function($provide) {
+   *         $provide.value('version', 'overridden'); // override version here
+   *       });
+   *
+   *       inject(function(version) {
+   *         expect(version).toEqual('overridden');
+   *       });
+   *     });
+   *   });
+   *
+   * ```
+   *
+   * @param {...Function} fns any number of functions which will be injected using the injector.
+   */
+
+
+
+  var ErrorAddingDeclarationLocationStack = function(e, errorForStack) {
+    this.message = e.message;
+    this.name = e.name;
+    if (e.line) this.line = e.line;
+    if (e.sourceId) this.sourceId = e.sourceId;
+    if (e.stack && errorForStack)
+      this.stack = e.stack + '\n' + errorForStack.stack;
+    if (e.stackArray) this.stackArray = e.stackArray;
+  };
+  ErrorAddingDeclarationLocationStack.prototype.toString = Error.prototype.toString;
+
+  window.inject = angular.mock.inject = function() {
+    var blockFns = Array.prototype.slice.call(arguments, 0);
+    var errorForStack = new Error('Declaration Location');
+    return isSpecRunning() ? workFn.call(currentSpec) : workFn;
+    /////////////////////
+    function workFn() {
+      var modules = currentSpec.$modules || [];
+
+      modules.unshift('ngMock');
+      modules.unshift('ng');
+      var injector = currentSpec.$injector;
+      if (!injector) {
+        injector = currentSpec.$injector = angular.injector(modules);
+      }
+      for(var i = 0, ii = blockFns.length; i < ii; i++) {
+        try {
+          /* jshint -W040 *//* Jasmine explicitly provides a `this` object when calling functions */
+          injector.invoke(blockFns[i] || angular.noop, this);
+          /* jshint +W040 */
+        } catch (e) {
+          if (e.stack && errorForStack) {
+            throw new ErrorAddingDeclarationLocationStack(e, errorForStack);
+          }
+          throw e;
+        } finally {
+          errorForStack = null;
+        }
+      }
+    }
+  };
+}
+
+
+})(window, window.angular);
\ No newline at end of file