/
queueRunner.test.ts
162 lines (154 loc) · 4 KB
/
queueRunner.test.ts
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/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
*/
import queueRunner from '../queueRunner';
describe('queueRunner', () => {
it('runs every function in the queue.', async () => {
const fnOne = jest.fn(next => next());
const fnTwo = jest.fn(next => next());
const options = {
clearTimeout,
fail: () => {},
onException: () => {},
queueableFns: [
{
fn: fnOne,
},
{
fn: fnTwo,
},
],
setTimeout,
};
// @ts-ignore
await queueRunner(options);
expect(fnOne).toHaveBeenCalled();
expect(fnTwo).toHaveBeenCalled();
});
it('exposes `fail` to `next`.', async () => {
const fail = jest.fn();
const fnOne = jest.fn(next => next.fail());
const fnTwo = jest.fn(next => next());
const options = {
clearTimeout,
fail,
onException: () => {},
queueableFns: [
{
fn: fnOne,
},
{
fn: fnTwo,
},
],
setTimeout,
};
// @ts-ignore
await queueRunner(options);
expect(fnOne).toHaveBeenCalled();
expect(fail).toHaveBeenCalled();
// Even if `fail` is called, the queue keeps running.
expect(fnTwo).toHaveBeenCalled();
});
it('passes errors to `onException`.', async () => {
const error = new Error('The error a test throws.');
const fnOne = jest.fn(() => {
throw error;
});
const fnTwo = jest.fn(next => next());
const onException = jest.fn();
const options = {
clearTimeout,
fail: () => {},
onException,
queueableFns: [
{
fn: fnOne,
},
{
fn: fnTwo,
},
],
setTimeout,
};
// @ts-ignore
await queueRunner(options);
expect(fnOne).toHaveBeenCalled();
expect(onException).toHaveBeenCalledWith(error);
// Even if one of them errors, the queue keeps running.
expect(fnTwo).toHaveBeenCalled();
});
it('passes an error to `onException` on timeout.', async () => {
const fnOne = jest.fn(_next => {});
const fnTwo = jest.fn(next => next());
const onException = jest.fn();
const options = {
clearTimeout,
fail: () => {},
onException,
queueableFns: [
{
fn: fnOne,
// It times out in zero seconds.
timeout: () => 0,
},
{
fn: fnTwo,
},
],
setTimeout,
};
// @ts-ignore
await queueRunner(options);
expect(fnOne).toHaveBeenCalled();
expect(onException).toHaveBeenCalled();
// i.e. the `message` of the error passed to `onException`.
expect(onException.mock.calls[0][0].message).toEqual(
'Timeout - Async callback was not invoked within the 0 ms timeout ' +
'specified by jest.setTimeout.',
);
expect(fnTwo).toHaveBeenCalled();
});
it('calls `fail` with arguments', async () => {
const failFn = jest.fn(next => next.fail('miserably', 'failed'));
const options = {
clearTimeout,
fail: jest.fn(),
queueableFns: [{fn: failFn}],
setTimeout,
};
// @ts-ignore
await queueRunner(options);
expect(options.fail).toHaveBeenCalledWith('miserably', 'failed');
});
it('calls `fail` when done(error) is invoked', async () => {
const error = new Error('I am an error');
const fail = jest.fn();
const fnOne = jest.fn(next => next(error));
const fnTwo = jest.fn(next => next());
const options = {
clearTimeout,
fail,
onException: () => {},
queueableFns: [
{
fn: fnOne,
},
{
fn: fnTwo,
},
],
setTimeout,
};
// @ts-ignore
await queueRunner(options);
expect(fnOne).toHaveBeenCalled();
expect(fail).toHaveBeenCalledWith(error);
// Even if `fail` is called, the queue keeps running.
expect(fnTwo).toHaveBeenCalled();
});
});