ember-wait-for-test-helper

$3

This helper is now built-in:

``js
import { waitFor, waitUntil } from '@ember/test-helpers';
`

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!Ember Version

Wait for your application to be in a specific state before continuing the test runner.

Useful for certain jquery plugins that take time to load. You can now avoid race conditions with a hard-coded wait time.

Add this line to tests/helpers/start-app.js in your app:

`js
import 'ember-wait-for-test-helper/wait-for';
`

Now you can do something like:

`js
import { selectorToExist } from 'ember-wait-for-test-helper/wait-for';

test('it should wait before asserting', function(assert) {
click('.button');

waitFor(selectorToExist('.a-slow-jquery-plugin'));

andThen(() => {
assert.ok(find('.a-slow-jquery-plugin').length === 1);
});
});
`

$3

You can define your own waiters. A waiter is a function that will continuously
run until it returns true. Once the waiter returns true your test will continue
running. It supports Promises.


`js
test('it should wait before asserting', function(assert) {
visit('/');

waitFor(() => {
let result = getAnswerFromSomewhere();
return result === 42; // only continue when result is 42
});
// or
waitFor(() => {
return getAnswerFromSomewhere(result => {
return result === 42; // only continue when result is 42
});
});

andThen(() => {
// ...
});
});
``