加载太快时无法获取 URL 的标题

Question

I am pretty new with mocha and I seem to love it so far. However I do get a small issue where it seems that it is trying to locate the pageTitle too fast and if I am lucky it actually manages to find the title but sometimes it doesnt and I am looking for a way something like "wait until the element is presented, if not after 10 sec then throw a error"

browser.get(url);


it('should have a title', (done) => {
    browser.driver
        .then(() => browser.getPageTitle())
        .then((text) => {
            assert.equal(text, "TEST", 'Not able to find the title');
        })
        .then(() => done());
});

Right now if I am lucky it manages to caught it but mostly it throws an error which is a empty reponse which I believe is that it doesn't get the title due to it is too fast. How can I make a function something like "Wait until the title is there, and if its not after 10 sec then error"

Answer 1

Try this:

setTimeout(() => {
    browser.get(url);


    it('should have a title', (done) => {
        browser.driver
            .then(() => browser.getPageTitle())
            .then((text) => {
                assert.equal(text, "TEST", 'Not able to find the title');
            })
            .then(() => done());
    });

}, 1000);

Answer 2

Sounds like you need a browser.wait with an expectedCondition . Try this

browser.wait(protractor.ExpectedConditions.urlContains('required_url'),
    10*1000,
    "Url did not contain 'required_url' within 10 seconds"
);

Answer 3

Import chai and chai-as-promised

const chai = require('chai').use(require('chai-as-promised'));
const expect = chai.expect;

Try using expect now

it('Check page title', () => { expect(browser.getTitle()).toEqual('Protractor practice website - WebTables'); })

Now expect is of chai assertion library and not default jasmine.