使用量角器在非角度站点上使用预期条件导致“类型错误:无法读取未定义的属性‘绑定’" [英] Use of Expected Conditions on Non Angular Site with Protractor Leads to "Type Error: Cannot read property 'bind' of undefined"
问题描述
当我在通过量角器的元素对象返回的 webelement 上使用预期条件时，我看到以下问题.我也试过 $ ，结果是一样的.我在 Node 4.2.4、Chrome V47 上使用 Protractor 3.1.1.*
I am seeing following issue when I am using Expected Conditions on webelements returned through element object of Protractor. I tried with $ as well, that resulted in the same thing. I am using Protractor 3.1.1 on Node 4.2.4, Chrome V47.*
类型错误:无法读取未定义的属性‘绑定’"
在提问之前，我搜索了论坛，并了解到使用 driver.findElement 对硒元素使用预期条件存在一些已知问题.
Before asking, I searched the forums, and understood there are some known issues with using Expected Conditions with selenium elements using driver.findElement.
但是，我在使用元素对象本身时没有遇到类似的问题.
However, I could not come across a similar issues reported while using element object itself.
https://github.com/angular/protractor/issues/1853
我们有一个用于登录页面的非 Angular 应用程序，它将在登录后切换到 Angular.所以，我设置了 ignoreSynchronization=true ，后来计划在登录后将其重置为 false.以下是示例代码，感谢社区的任何想法.
We have a non angular app for login page, which will be switched to Angular, post login. So, I have set ignoreSynchronization=true and later planned to reset it to false after login. Below is the sample code, appreciate any thoughts from community.
页面对象文件
module.exports = {
login: element(by.model('credentials.username')),
password: element(by.model('credentials.password')),
user: "Email",
passwd: "Password",
goButton: $('input.btn.btn-primary'),
EC: protractor.ExpectedConditions,
go: function() {
browser.get("Application URL",30000);
browser.wait(this.EC.elementToBeClickable(this.login),30000);
},
下面是我的示例测试套件
var VMPage = require('./LoginPage.js');
describe('App Demo', function() {
beforeEach(function() {
console.log("Before Each Started");
browser.driver.manage().timeouts().implicitlyWait(30000);
jasmine.DEFAULT_TIMEOUT_INTERVAL = 1800000;
browser.ignoreSynchronization = true;
VMPage.go();
VMPage.login();
});
it('Test Case', function() {
console.log("***Test Started***");
});
});
报告的堆栈跟踪如下所示:堆栈:
TypeError: Cannot read property 'bind' of undefined
at [object Object].ExpectedConditions.presenceOf (C:\Users\PJ\Ap
pData\Roaming\npm\node_modules\protractor\lib\expectedConditions.js:289:33)
at [object Object].ExpectedConditions.visibilityOf (C:\Users\PJ\
AppData\Roaming\npm\node_modules\protractor\lib\expectedConditions.js:328:10)
at [object Object].ExpectedConditions.elementToBeClickable (C:\Users\PJ0
0366401\AppData\Roaming\npm\node_modules\protractor\lib\expectedConditions.js:17
8:12)
at Object.module.exports.go (D:\protractor_git\Demo\\Log
inPage.js:14:24)
at Object.<anonymous> (D:\protractor_git\Demo\\LoginTest
.js:9:10)
at C:\Users\PJ\AppData\Roaming\npm\node_modules\protractor\node_
modules\jasminewd2\index.js:96:23
at new wrappedCtr (C:\Users\PJ\AppData\Roaming\npm\node_modules\
protractor\node_modules\selenium-webdriver\lib\goog\base.js:2468:26)
at controlFlowExecute (C:\Users\PJ\AppData\Roaming\npm\node_modu
les\protractor\node_modules\jasminewd2\index.js:82:18)
From: Task: Run beforeEach in control flow
at Object.<anonymous> (C:\Users\PJ\AppData\Roaming\npm\node_modu
les\protractor\node_modules\jasminewd2\index.js:81:14)
at attemptAsync (C:\Users\PJ\AppData\Roaming\npm\node_modules\pr
otractor\node_modules\jasmine\node_modules\jasmine-core\lib\jasmine-core\jasmine
.js:1916:24)
at QueueRunner.run (C:\Users\PJ\AppData\Roaming\npm\node_modules
\protractor\node_modules\jasmine\node_modules\jasmine-core\lib\jasmine-core\jasm
ine.js:1871:9)
at QueueRunner.execute (C:\Users\PJ\AppData\Roaming\npm\node_mod
ules\protractor\node_modules\jasmine\node_modules\jasmine-core\lib\jasmine-core\
jasmine.js:1859:10)
at Spec.Env.queueRunnerFactory (C:\Users\PJ\AppData\Roaming\npm\
node_modules\protractor\node_modules\jasmine\node_modules\jasmine-core\lib\jasmi
ne-core\jasmine.js:697:35)
at Spec.execute (C:\Users\PJ\AppData\Roaming\npm\node_modules\pr
otractor\node_modules\jasmine\node_modules\jasmine-core\lib\jasmine-core\jasmine
.js:359:10)
at Object.fn (C:\Users\PJ\AppData\Roaming\npm\node_modules\protr
actor\node_modules\jasmine\node_modules\jasmine-core\lib\jasmine-core\jasmine.js
:2479:37)
at attemptAsync (C:\Users\PJ\AppData\Roaming\npm\node_modules\pr
otractor\node_modules\jasmine\node_modules\jasmine-core\lib\jasmine-core\jasmine
.js:1916:24)
at QueueRunner.run (C:\Users\PJ\AppData\Roaming\npm\node_modules
\protractor\node_modules\jasmine\node_modules\jasmine-core\lib\jasmine-core\jasm
ine.js:1871:9)
at QueueRunner.execute (C:\Users\PJ\AppData\Roaming\npm\node_mod
ules\protractor\node_modules\jasmine\node_modules\jasmine-core\lib\jasmine-core\
jasmine.js:1859:10)
From asynchronous test:
Error
at Suite.<anonymous> (D:\protractor_git\Demo\\LoginTest.
js:3:2)
at addSpecsToSuite (C:\Users\PJ\AppData\Roaming\npm\node_modules
\protractor\node_modules\jasmine\node_modules\jasmine-core\lib\jasmine-core\jasm
ine.js:833:25)
at Env.describe (C:\Users\PJ\AppData\Roaming\npm\node_modules\pr
otractor\node_modules\jasmine\node_modules\jasmine-core\lib\jasmine-core\jasmine
.js:802:7)
at jasmineInterface.describe (C:\Users\PJ\AppData\Roaming\npm\no
de_modules\protractor\node_modules\jasmine\node_modules\jasmine-core\lib\jasmine
-core\jasmine.js:3375:18)
at Object.<anonymous> (D:\protractor_git\Demo\\LoginTest
.js:2:1)
推荐答案
你的 页面对象应该定义为一个函数:
Your page object should be defined as a function:
var Page = function () {
this.login = element(by.model('credentials.username'));
this.password = element(by.model('credentials.password'));
this.user = "Email";
this.passwd = "Password";
this.goButton = $('input.btn.btn-primary');
this.EC = protractor.ExpectedConditions;
this.go = function() {
browser.get("Application URL", 30000);
browser.wait(this.EC.elementToBeClickable(this.login), 30000);
};
};
module.exports = new Page();
这篇关于使用量角器在非角度站点上使用预期条件导致“类型错误:无法读取未定义的属性‘绑定’"的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
