no-async-module-callbacks.md

Disallow async module callbacks (qunit/no-async-module-callbacks)

💼 This rule is enabled in the ✅ recommended config.

QUnit does not support async module callbacks. Only test and hook callbacks will work as expected when using async and await. Code after an await statement in an async module callback will run in an unexpected way.

The following example will result in QUnit only running the first test as part of the first module. The second test will be treated as if it was within the last module that QUnit processes.

QUnit.module('An async module', async function () {
    QUnit.test('a passing test', function (assert) {
        assert.ok(true);
    });

    await Promise.resolve();

    QUnit.test('another passing test', function (assert) {
        assert.ok(true);
    });
});

QUnit.module('Some other module');

// Runner output:
// ok 1 An async module > a passing test
// ok 2 Some other module > another passing test

Rule Details

The following patterns are considered warnings:

QUnit.module('example module', async function () {});

QUnit.module('example module', async () => {});

The following patterns are not warnings:

QUnit.module('example module', function () {});

QUnit.module('example module', () => {});