I am trying to write my Cucumber tests using TypScript, like this:
import { browser, $$ } from 'protractor';
import { Given, Then } from 'cucumber'
import { expect } from 'chai';
Given('I navigate to the homepage', function (callback) {
browser.get('http://localhost:4200');
callback();
});
Then('I want to see the welcome message {string}', function (message, callback) {
expect($$('h1').first().getText()).to.eventually.equal(message).and.notify(callback);
});
However, Protractor complains:
Error: Invalid Chai property: eventually
How can I import this? I have tried:
import { eventual } from 'chai-as-promised';
but this doesn't work. How can I accomplish this? I have also tried rewriting the Then
call using await
, but the compiler complains that you cannot mix callbacks with async functions. Aargh!
In your protractor configuration, add the following lines at the end of the onPrepare
function :
onPrepare: function() {
...
// Load chai assertions
const chai = require('chai');
const chaiAsPromised = require('chai-as-promised');
// Load chai-as-promised support
chai.use(chaiAsPromised);
// Initialise should API (attaches as a property on Object)
chai.should();
}
When using async function you should remove the callback from the function signature.
Then('I want to see the welcome message {string}',
async function (message) {
await chai.expect($$('h1').first().getText())
.to.eventually.equal(message);
});
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