angularjs – 量角器测试角$http拦截器

(function(XHR) {
    "use strict";

    var open = XHR.prototype.open;
    var send = XHR.prototype.send;

    XHR.prototype.open = function(method,url,async,user,pass) {
        this._url = url;
        open.call(this,method,pass);
    };

    XHR.prototype.send = function(data) {
        var self = this;
        var oldOnReadyStateChange;
        var url = this._url;

        function onReadyStateChange() {
            if(self.readyState == 4 /* complete */) {
                /* This is where you can put code that you want to execute post-complete*/
                /* URL is kept in this._url */

                if(self._url=='api/v1/groups')
                {
                    var request=JSON.parse(data);
                    if(request.method=='createGroup') {

                        var XHRInterceptObj=new Object();
                        XHRInterceptObj.request=request;
                        XHRInterceptObj.response=self;
                        window._groupCreation =XHRInterceptObj;

                    }
                    else if(request.method=='getGroupDetails') {
                        var XHRInterceptObj=new Object();
                        XHRInterceptObj.request=request;
                        XHRInterceptObj.response=self;
                        window._groupDetails =XHRInterceptObj;
                    }
                }

            }

            if(oldOnReadyStateChange) {
                oldOnReadyStateChange();
            }
        }

        /* Set xhr.noIntercept to true to disable the interceptor for a particular call */
        if(!this.noIntercept) {
            if(this.addEventListener) {
                this.addEventListener("readystatechange",onReadyStateChange,false);
            } else {
                oldOnReadyStateChange = this.onreadystatechange;
                this.onreadystatechange = onReadyStateChange;
            }
        }
        //console.log('data',data);
        send.call(this,data);
    }
})(XMLHttpRequest);

你可以从这样的全局变量中获取响应数据.

browser.executeScript('return window._groupCreation;').then(function(obj){
        console.log(obj.responseText);
    });

在这个脚本中,我们实际上是使用原型和拦截调用向XHR对象添加其他功能.