来自angular.js源码,https://ajax.googleapis.com/ajax/libs/angularjs/1.0.7/angular.js
它看起来像实例化控制器的问题.

这是导致断言失败的一行：

/**
 * @ngdoc function
 * @name ng.$controller
 * @requires $injector
 *
 * @param {Function|string} constructor If called with a function then it's considered to be the
 *    controller constructor function. Otherwise it's considered to be a string which is used
 *    to retrieve the controller constructor using the following steps:
 *
 *    * check if a controller with given name is registered via `$controllerProvider`
 *    * check if evaluating the string on the current scope returns a constructor
 *    * check `window[constructor]` on the global `window` object
 *
 * @param {Object} locals Injection locals for Controller.
 * @return {Object} Instance of given controller.
 *
 * @description
 * `$controller` service is responsible for instantiating controllers.
 *
 * It's just a simple call to {@link AUTO.$injector $injector},but extracted into
 * a service,so that one can override this service with {@link https://gist.github.com/1649788
 * BC version}.
 */
return function(constructor,locals) {
  if(isString(constructor)) {
    var name = constructor;
    constructor = controllers.hasOwnProperty(name)
        ? controllers[name]
        : getter(locals.$scope,name,true) || getter($window,true);

======> assertArgFn(constructor,true);
}

return $injector.instantiate(constructor,locals);
};

它无法找到控制器的构造函数.