What are some examples of async assertions in Chai?

What are some examples of async assertions in Chai?

Async assertions in Chai allow you to test asynchronous code. For example, you can use 'done' callback or return a promise.

Can you show me a specific example using promises?

Sure! Here's an example:

const chai = require('chai');
const expect = chai.expect;

function asyncFunction() {
    return new Promise((resolve) => {
        setTimeout(() => resolve('Hello, World!'), 1000);
    });
}

describe('Async Function', () => {
    it('should return Hello, World!', () => {
        return asyncFunction().then((result) => {
            expect(result).to.equal('Hello, World!');
        });
    });
});

What about using the 'done' callback?

Here's how you can use the 'done' callback:

describe('Async Function with done', () => {
    it('should return Hello, World!', (done) => {
        asyncFunction().then((result) => {
            expect(result).to.equal('Hello, World!');
            done();
        });
    });
});