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Protractor+Mocha fails suite with TypeError before browser loads SUT

由 时光怂恿深爱的人放手 提交于 2019-12-02 10:09:59

First off, I am not that familiar with Mocha. However, I can get your tests to pass. This is what you'll need to do:

Set your dependencies

It sometimes is great to roll with the latest and greatest dependencies. The latest chai-as-promised did not work for me. I once tried to update the Protractor dependencies to the latest version of chai and chai-as-promised and ran issues. I had to downgrade your dependencies and ended up working with:

"chai": "~3.5.0",
"chai-as-promised": "~5.3.0",

These are the same versions as the Protractor package.json.

Use the onPrepare plugin

Set chai-as-promised before Protractor runs the test:

onPrepare: function() {
  let chai = require('chai');
  let chaiAsPromised = require("chai-as-promised");
  chai.use(chaiAsPromised);
  global.chai = chai;
}

Edit the test:

Add or modify the following.

app.e2e-spec.ts

import {RootPage} from './root/root.po';
let expect = global["chai"].expect;

  // change the following lines to have "eventually"
  expect(page.getParagraphText()).to.eventually.contain('Car search POC');

  // if you don't want to use "eventually"
  page.getParagraphText().then(paragraph => {
    expect(paragraph).to.contain('Car search POC');
  });

root.e2e-spec.ts:

let expect = global["chai"].expect;

describe('Home page', () => {

  // change the following lines to have "eventually"
  expect(page.getParagraphText()).to.eventually.include('Car search POC');
  expect(browser.getCurrentUrl()).to.eventually.include(homePage.uri());

home.e2e-spec.ts:

import {RootPage} from './root.po';
import {HomePage} from '../home/home.po';
import {WaitCondition} from '../wait.conditions';
let expect = global["chai"].expect;

  // change the following lines to have "eventually"
  expect(page.getParagraphText()).to.eventually.equal('Car search POC');

  // This line will not work. getInnerHtml has been deprecated by both
  // Protractor and selenium-webdriver.
  //
  // If you want to use something similar, do something like:
  // let i = browser.executeScript("return arguments[0].innerHTML;", element(locator));
  // This is noted in the CHANGELOG under the Protractor 5.0.0 release
  expect(page.getListingContent()).to.exist;

search.e2e-spec.ts

import {SearchPage} from './search.po';
let expect = global["chai"].expect;

  // change the following lines to have "eventually"
  expect(page.getParagraphText()).to.eventually.contain('Car search POC');

Console output

Here is my results from running your test. Note that "will have content" fails because getInnerHtml() is not a valid.

angular-cli-seed App
  ✓ will do normal tests
  ✓ will display its title

Home page
  ✓ will display its title
  - will have content

root page
  ✓ will display its title
  ✓ will redirect the URL to the home page

search page
  ✓ will display its title


6 passing (5s)
1 pending

This was a fun StackOverflow question to go through. It was easy to answer since you included a branch of what was not working. Happy testing!

标签
protractor
mocha
integration-testing
angular-cli
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