acrd.ion
Ion is an simple async data driven testing tool built on mocha and chai.
Purpose: Test Node.js promises with less code!
Install
npm i acrdapp/ion
Take a basic async function that sends a message. It may have to perform database queries, and more. It takes time.
function sendMessage(to: string, content: string) {
return new Promise((resolve, reject) => {
const minLength = 3;
const maxLength = 32;
if (content.length < minLength) reject('Content too short');
if (content.length > maxLength) reject('Content too long');
if (content.includes('transfer money')) reject('No scammers plz');
setTimeout(() => {
resolve({ to, content, createdAt: new Date() });
}, 25);
});
}Write tests like this...
import { test, given } from '@acrd/ion';
test(sendMessage, async () => {
given('adam@example.com', '').rejectWith('Content too short');
given('adam@example.com', 'aa').reject();
given('adam@example.com', 'yay').resolve();
given('adam@example.com', 'Plz transfer money').rejectWith('No scammers plz');
given('adam@example.com', 'very gud unit test, pls pass @@@@@').rejectWith(
'Content too long'
);
given('adam@example.com', 'proper msg')
.message('Payload is correct')
.assert((msg) =>
expect(msg).to.deep.equal({
to: 'adam@example.com',
content: 'proper msg',
timestamp: '18-11-2021 02:18',
})
);
});Or just like this...
test(sendMessage, async () => {
given('adam@example.com', '').reject();
given('adam@example.com', 'aa').reject();
given('adam@example.com', 'yay').resolve();
given('adam@example.com', 'Plz transfer money').reject();
given('adam@example.com', 'very gud unit test, pls pass @@@@@').reject();
given('adam@example.com', 'proper msg').resolve();
});Not this...
describe('sendMessage', async () => {
it(`valid email, empty string content, rejected'`, () => {
const result = () => await sendMessage('adam@example.com', '');
await expect(result()).to.be.rejectedWith('Content too short');
});
it(`valid email, too short content, rejected'`, () => {
const result = () => await sendMessage('adam@example.com', 'aa');
await expect(result()).to.be.rejectedWith('Content too short');
});
it(`valid email, valid content length, resolved`, () => {
const result = () => await sendMessage('adam@example.com', 'yay');
expect(await result()).not.to.be.rejected;
});
// Yeah, I'm not writing this all out, it's 2:30AM.
// Just imagine another 3 of these...
});Inspired by sazerac.