How to use worker.teardown method in ava

Best JavaScript code snippet using ava

redisWorker.spec.js

Source:redisWorker.spec.js

1/**2 * @jest-environment node3 */4// Redis Worker Tests5jest.setTimeout(60000);6const { coordinator, readStore } = require('../models/redisWorker');7const { v4 : uuidv4 } = require('uuid');8const shajs = require("sha.js");9const hash = (obj) => {10    obj = obj.toString();11    return shajs('sha256').update(obj).digest('hex');12}13let worker = new coordinator();14describe("Basic Redis Worker tests", () => {15    let key = uuidv4();16    test("should be able to write/read data", async () => {17        let value = "Hello, World!"18        await worker.set(key, value);19        expect(await worker.get(key)).toBe(value);20    });21    test("should be able to delete data", async () => {22        await worker.del(key);23        expect(await worker.get(key)).toBeFalsy();24    });25    test("should be able to find patterned keys", async () => {26        let suffixes = ["cat", "dog", "hen"];27        let patterned_key;28        for (const suffix of suffixes){29            patterned_key = `${key}_${suffix}`;30            await worker.set(patterned_key, suffix);31        }32        let matches = await worker.keys(`${key}*`);33        expect(await matches.length).toBe(suffixes.length);34    });35});36describe("Coordinator tests - Spin up", () => {37    let targetPrefix = "myTestJob"38    let runner = "python"39    let callable = "dummy.py"40    test("should be able to spin up a processor worker", async () => {41        let agentType = "proc"42        await worker.spinUp(agentType, targetPrefix, runner, callable);43        let store = readStore();44        let sessionKey = hash(`${agentType}_${targetPrefix}_${runner}_${callable}`);45        expect(store[sessionKey]).toBeTruthy();46    });47    test("should be able to spin up an aggregator worker", async () => {48        let agentType = "agg"49        await worker.spinUp(agentType, targetPrefix, runner, callable);50        let store = readStore();51        let sessionKey = hash(`${agentType}_${targetPrefix}_${runner}_${callable}`);52        expect(store[sessionKey]).toBeTruthy();53    });54});55describe("Coordinator tests - Tear down", () => {56    let targetPrefix = "myTestJob"57    let runner = "python"58    let callable = "dummy.py"59    test("should be able to tear down processor workers", async () => {60        let agentType = "proc"61        worker.tearDown(agentType, targetPrefix, runner, callable);62        await worker.updatePIDs(agentType, targetPrefix, runner, callable);63        let new_pids = worker.getPIDs(agentType, targetPrefix, runner, callable);64        expect(new_pids.length).toBe(0);65    });66    test("should be able to tear down aggregator workers", async () => {67        let agentType = "agg"68        worker.tearDown(agentType, targetPrefix, runner, callable);69        await worker.updatePIDs(agentType, targetPrefix, runner, callable);70        let new_pids = worker.getPIDs(agentType, targetPrefix, runner, callable);71        expect(new_pids.length).toBe(0);72    });...

plugin.js

Source:plugin.js

1const v8 = require('v8');2const pkg = require('../../package.json');3const subprocess = require('./subprocess');4const options = require('./options');5const workers = new Map();6const workerTeardownFns = new WeakMap();7function createSharedWorker(filename, initialData, teardown) {8	const channel = subprocess.registerSharedWorker(filename, initialData, teardown);9	class ReceivedMessage {10		constructor(id, serializedData) {11			this.id = id;12			this.data = v8.deserialize(new Uint8Array(serializedData));13		}14		reply(data) {15			return publishMessage(data, this.id);16		}17	}18	// Ensure that, no matter how often it's received, we have a stable message19	// object.20	const messageCache = new WeakMap();21	async function * receiveMessages(replyTo) {22		for await (const evt of channel.receive()) {23			if (replyTo === undefined && evt.replyTo !== undefined) {24				continue;25			}26			if (replyTo !== undefined && evt.replyTo !== replyTo) {27				continue;28			}29			let message = messageCache.get(evt);30			if (message === undefined) {31				message = new ReceivedMessage(evt.messageId, evt.serializedData);32				messageCache.set(evt, message);33			}34			yield message;35		}36	}37	function publishMessage(data, replyTo) {38		const id = channel.post([...v8.serialize(data)], replyTo);39		return {40			id,41			async * replies() {42				yield * receiveMessages(id);43			}44		};45	}46	return {47		available: channel.available,48		protocol: 'experimental',49		get currentlyAvailable() {50			return channel.currentlyAvailable;51		},52		publish(data) {53			return publishMessage(data);54		},55		async * subscribe() {56			yield * receiveMessages();57		}58	};59}60function registerSharedWorker({61	filename,62	initialData,63	supportedProtocols,64	teardown65}) {66	if (!options.get().experiments.sharedWorkers) {67		throw new Error('Shared workers are experimental. Opt in to them in your AVA configuration');68	}69	if (!supportedProtocols.includes('experimental')) {70		throw new Error(`This version of AVA (${pkg.version}) does not support any of the desired shared worker protocols: ${supportedProtocols.join()}`);71	}72	let worker = workers.get(filename);73	if (worker === undefined) {74		worker = createSharedWorker(filename, initialData, async () => {75			// Run possibly asynchronous teardown functions serially, in reverse76			// order. Any error will crash the worker.77			const teardownFns = workerTeardownFns.get(worker);78			if (teardownFns !== undefined) {79				for await (const fn of [...teardownFns].reverse()) {80					await fn();81				}82			}83		});84		workers.set(filename, worker);85	}86	if (teardown !== undefined) {87		if (workerTeardownFns.has(worker)) {88			workerTeardownFns.get(worker).push(teardown);89		} else {90			workerTeardownFns.set(worker, [teardown]);91		}92	}93	return worker;94}...

_worker.js

Source:_worker.js

1module.exports = async ({negotiateProtocol}) => {2	const protocol = negotiateProtocol(['experimental']);3	// When we're ready to receive workers or messages.4	protocol.ready();5	// Calling it twice is harmless.6	protocol.ready();7	echo(protocol.subscribe());8	handleWorkers(protocol);9};10const handled = new WeakSet();11async function echo(messages) {12	for await (const message of messages) {13		if (!handled.has(message)) {14			handled.add(message);15			echo(message.reply(message.data).replies());16		}17	}18}19async function handleWorkers(protocol) {20	for await (const testWorker of protocol.testWorkers()) {21		testWorker.teardown(() => {22			protocol.broadcast({cleanup: testWorker.file});23		});24		let byeCount = 0;25		const bye = testWorker.teardown(() => {26			byeCount++;27			setImmediate(() => {28				protocol.broadcast({bye: testWorker.file, byeCount});29			});30		});31		testWorker.publish({hello: testWorker.file});32		echo(protocol.broadcast({broadcast: testWorker.file}).replies());33		echo(testWorker.subscribe());34		for await (const message of testWorker.subscribe()) {35			if (message.data === 'ð') {36				bye();37				bye(); // Second call is a no-op.38				break;39			}40		}41	}...

Using AI Code Generation

1import test from 'ava';2import { Worker } from 'worker_threads';3test('foo', t => {4    const worker = new Worker('./worker.js');5    t.teardown(() => worker.terminate());6});7import { parentPort } from 'worker_threads';8parentPort.on('message', message => {9    if (message === 'terminate') {10        parentPort.postMessage('terminated');11    }12});13MIT © [Jagadish Chakravarthi](

Using AI Code Generation

1import test from 'ava';2import worker from 'worker_threads';3test('my test', t => {4    t.pass();5    worker.teardown();6});7import test from 'ava';8import worker from 'worker_threads';9test('my test', t => {10    t.pass();11    worker.teardown();12});13### worker.teardown()14MIT © [Rishabh Anand](

Using AI Code Generation

1const test = require('ava');2const worker = require('./worker');3test('worker.teardown', async t => {4  await worker.teardown();5  t.pass();6});7### `worker.teardown()`8### `worker.kill()`9### `worker.send(message)`10Sends a message to the worker process. The message will be serialized using [`serialize-javascript`](

Using AI Code Generation

1const test = require('ava');2const worker = require('ava/worker/child');3test('test', t => {4  t.pass();5});6worker.teardown();7### `worker.teardown()`

Using AI Code Generation

1const test = require('ava');2const worker = require('ava/worker');3test('test', async t => {4  const { teardown } = worker.setup();5  await teardown();6});7### worker.setup()8### teardown()

Using AI Code Generation

1import test from 'ava'2import { Worker } from 'worker_threads'3test('my test', async t => {4  const worker = new Worker('./worker.js')5  await worker.teardown()6})7import { parentPort } from 'worker_threads'8parentPort.on('message', message => {9})10### `worker.terminate()`11### `worker.getStdout()`12### `worker.getStderr()`13### `worker.unref()`14### `worker.ref()`15- [workerpool](

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