150 lines
3.4 KiB
TypeScript
150 lines
3.4 KiB
TypeScript
// Copyright 2021 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import { assert } from 'chai';
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import { Readable } from 'stream';
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import * as sinon from 'sinon';
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import { noop } from 'lodash';
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import { once } from 'events';
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import { getStreamWithTimeout } from '../../util/getStreamWithTimeout';
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describe('getStreamWithTimeout', () => {
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let sandbox: sinon.SinonSandbox;
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let clock: sinon.SinonFakeTimers;
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// This helps tests preserve ordering.
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const pushAndWait = (
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stream: Readable,
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chunk: string | null
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): Promise<unknown> => {
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const promise = once(stream, chunk == null ? 'end' : 'data');
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stream.push(chunk);
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return promise;
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};
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beforeEach(() => {
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sandbox = sinon.createSandbox();
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clock = sandbox.useFakeTimers();
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});
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afterEach(() => {
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sandbox.restore();
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});
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it('resolves on finished stream', async () => {
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const stream = new Readable({
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read: noop,
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});
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stream.push('hello');
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stream.push(' ');
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stream.push('world');
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stream.push(null);
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const abort = sinon.stub();
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const data = await getStreamWithTimeout(stream, {
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name: 'test',
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timeout: 1000,
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abortController: { abort },
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});
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assert.strictEqual(Buffer.from(data).toString(), 'hello world');
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sinon.assert.notCalled(abort);
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});
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it('does not timeout on slow but steady stream', async () => {
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const stream = new Readable({
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read: noop,
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});
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const abort = sinon.stub();
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const data = getStreamWithTimeout(stream, {
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name: 'test',
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timeout: 1000,
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abortController: { abort },
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});
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await clock.tickAsync(500);
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await pushAndWait(stream, 'hello ');
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await clock.tickAsync(500);
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await pushAndWait(stream, 'world');
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await clock.tickAsync(500);
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await pushAndWait(stream, null);
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await clock.nextAsync();
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assert.strictEqual(Buffer.from(await data).toString(), 'hello world');
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sinon.assert.notCalled(abort);
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});
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it('does timeout on slow but unsteady stream', async () => {
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const stream = new Readable({
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read: noop,
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});
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const abort = sinon.stub();
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const data = getStreamWithTimeout(stream, {
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name: 'test',
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timeout: 1000,
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abortController: { abort },
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});
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await clock.tickAsync(500);
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await pushAndWait(stream, 'hello ');
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await clock.tickAsync(500);
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await pushAndWait(stream, 'world');
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const promise = assert.isRejected(
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data,
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'getStreamWithTimeout(test) timed out'
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);
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await clock.tickAsync(1000);
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await promise;
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sinon.assert.called(abort);
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});
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it('rejects on timeout', async () => {
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const stream = new Readable({
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read: noop,
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});
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const abort = sinon.stub();
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const promise = assert.isRejected(
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getStreamWithTimeout(stream, {
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name: 'test',
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timeout: 1000,
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abortController: { abort },
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}),
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'getStreamWithTimeout(test) timed out'
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);
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await clock.tickAsync(1000);
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await promise;
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sinon.assert.called(abort);
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});
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it('rejects on stream error', async () => {
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const stream = new Readable({
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read: noop,
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});
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const abort = sinon.stub();
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const promise = assert.isRejected(
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getStreamWithTimeout(stream, {
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name: 'test',
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timeout: 1000,
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abortController: { abort },
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}),
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'welp'
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);
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stream.emit('error', new Error('welp'));
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await promise;
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sinon.assert.notCalled(abort);
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});
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});
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