我正在尝试在我的量角器代码中执行JSON断言。我为请求生成一个id，并为该id获取一些JSON数据。我需要检查使用量角器，错误类型是10 （jsonData [0] .properties.errror）我在方法中包含了一个expect语句，它获取了jsondata未定义的错误。我的量角器代码如下：
var obj=require('./../../bin/clientrest-wikvaya.js');
var UI = require('./../ui.js');
var co = require('co');
var ui = new UI ();
describe("MapFeedback: road-missing", function () {
ui.setSmallScreenSize();
// ui.testLogger(100);
it('test', co.wrap(function*() {
yield browser.get(ui.createStartLink());
yield ui.REPORT_ROAD.click();
expect(browser.getCurrentUrl()).toContain("report_road");
yield ui.ROAD_NEW.click();
expect(browser.getCurrentUrl()).toContain("choose_location_road_new/road_new");
yield ui.zoomIn (16.5);
yield element(By.css('button[ng-click="doneChooseLocation(newLocation);"]')).click();
expect(browser.getCurrentUrl()).toContain("road_new");
yield ui.ROAD_NAME.sendKeys('TEST');
yield ui.HIGHWAY_OPTION.click();
yield ui.SUBMIT.click();
expect(browser.getCurrentUrl()).toContain("submit");
yield ui.waitSubmit();
expect(yield element(By.css('div[ng-show="mapFeedBack.submitState==\'success\'"]')).isDisplayed()).toBeTruthy();
var reportId = yield browser.executeScript('return mapFeedBack.reportId');
console.log("road-missing id: "+reportId);
obj.GetmapFeedbackData(function(jsonData){
console.log("------GET CALL RESULT------");
console.log(jsonData);
},reportId);
expect(jsonData[0].properties.error).toEquals(10);
}));
});
JsonData：
[ { previousGuid: '173171025e42f839c77c9390298b392674a70482',
layerId: 'wikvaya/feedback/main',
lastUpdateTS: 1475746314112,
coordinates: [ 12.5604, 55.67653, 0 ],
guid: 'a81ada32fd0f4b6ee52ba2cf8659b48256c0094e',
id: -1253236,
type: 'Point',
nodeId: 'feedback',
createdTS: 1475746313348,
properties:
{ zoomLevel: 20,
jobStatus: 'INPROGRESS',
attachments: [],
error: 10,
type: '1',
oda: 1,
jobId: -840132,
jobSolution: 'NONE',
v: '2.5',
appId: 'MapFeedbackWebGeneric',
speedCat: '2',
pageURL: '',
lang: 'en',
roadname: 'TEST' },
states: [ null, null, null, 'WIP' ] } ]
但是当我执行此测试时，我得到以下错误：
Failures:
1) MapFeedback: road-missing test
Message:
Failed: jsonData is not defined
Stack:
ReferenceError: jsonData is not defined
at Object.<anonymous> (c:\Users\jasharma\gitrepo\mapfeedback-test\test\road\road-missing.js:40:10)
at next (native)
at onFulfilled (c:\Users\jasharma\gitrepo\mapfeedback-test\node_modules\co\index.js:65:19)
at Promise.invokeCallback_ (c:\Users\jasharma\gitrepo\mapfeedback-test\node_modules\selenium-webdriver\lib\promise.js:1329:14)
at TaskQueue.execute_ (c:\Users\jasharma\gitrepo\mapfeedback-test\node_modules\selenium-webdriver\lib\promise.js:2790:14)
at TaskQueue.executeNext_ (c:\Users\jasharma\gitrepo\mapfeedback-test\node_modules\selenium-webdriver\lib\promise.js:2773:21)
at c:\Users\jasharma\gitrepo\mapfeedback-test\node_modules\selenium-webdriver\lib\promise.js:2652:27
at c:\Users\jasharma\gitrepo\mapfeedback-test\node_modules\selenium-webdriver\lib\promise.js:639:7
at process._tickCallback (internal/process/next_tick.js:103:7)
From: Task: Run it("test") in control flow
at Object.<anonymous> (c:\Users\jasharma\gitrepo\mapfeedback-test\node_modules\jasminewd2\index.js:81:14)
From asynchronous test:
Error
at Suite.<anonymous> (c:\Users\jasharma\gitrepo\mapfeedback-test\test\road\road-missing.js:12:5)
at Object.<anonymous> (c:\Users\jasharma\gitrepo\mapfeedback-test\test\road\road-missing.js:8:1)
at Module._compile (module.js:413:34)
at Object.Module._extensions..js (module.js:422:10)
at Module.load (module.js:357:32)
at Function.Module._load (module.js:314:12)
请告诉我出错的地方:(
答案 0 :(得分：1)
由于obj.GetmapFeedbackData()方法是异步的，您需要让脚本等待get调用完成。您需要创建一个promise并在获得jsonData后解析它。请看下面的例子，
var defer = protractor.promise.defer();
obj.GetmapFeedbackData(function(jsonData){
console.log("------GET CALL RESULT------");
console.log(jsonData);
defer.fulfill(jsonData[0].properties.error);
},reportId);
expect(defer.promise()).toEqual(10); //This line will wait untill the `obj.GetmapFeedbackData()` is completed.