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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import {
assert,
assertEquals,
assertObjectMatch,
} from "@test_util/std/assert/mod.ts";
import { fromFileUrl, relative } from "@test_util/std/path/mod.ts";
import * as workerThreads from "node:worker_threads";
import { EventEmitter, once } from "node:events";
Deno.test("[node/worker_threads] BroadcastChannel is exported", () => {
assertEquals<unknown>(workerThreads.BroadcastChannel, BroadcastChannel);
});
Deno.test("[node/worker_threads] MessageChannel are MessagePort are exported", () => {
assertEquals<unknown>(workerThreads.MessageChannel, MessageChannel);
assertEquals<unknown>(workerThreads.MessagePort, MessagePort);
});
Deno.test({
name: "[worker_threads] isMainThread",
fn() {
assertEquals(workerThreads.isMainThread, true);
},
});
Deno.test({
name: "[worker_threads] threadId",
fn() {
assertEquals(workerThreads.threadId, 0);
},
});
Deno.test({
name: "[worker_threads] resourceLimits",
fn() {
assertObjectMatch(workerThreads.resourceLimits, {});
},
});
Deno.test({
name: "[worker_threads] parentPort",
fn() {
assertEquals(workerThreads.parentPort, null);
},
});
Deno.test({
name: "[worker_threads] workerData",
fn() {
assertEquals(workerThreads.workerData, null);
},
});
Deno.test({
name: "[worker_threads] setEnvironmentData / getEnvironmentData",
fn() {
workerThreads.setEnvironmentData("test", "test");
assertEquals(workerThreads.getEnvironmentData("test"), "test");
},
});
Deno.test({
name: "[worker_threads] Worker threadId",
async fn() {
const worker = new workerThreads.Worker(
new URL("./testdata/worker_threads.mjs", import.meta.url),
);
worker.postMessage("Hello, how are you my thread?");
await once(worker, "message");
const message = await once(worker, "message");
assertEquals(message[0].threadId, 1);
worker.terminate();
const worker1 = new workerThreads.Worker(
new URL("./testdata/worker_threads.mjs", import.meta.url),
);
worker1.postMessage("Hello, how are you my thread?");
await once(worker1, "message");
assertEquals((await once(worker1, "message"))[0].threadId, 2);
worker1.terminate();
},
});
Deno.test({
name: "[worker_threads] Worker basics",
async fn() {
workerThreads.setEnvironmentData("test", "test");
workerThreads.setEnvironmentData(1, {
test: "random",
random: "test",
});
const { port1 } = new MessageChannel();
const worker = new workerThreads.Worker(
new URL("./testdata/worker_threads.mjs", import.meta.url),
{
workerData: ["hey", true, false, 2, port1],
// deno-lint-ignore no-explicit-any
transferList: [port1 as any],
},
);
worker.postMessage("Hello, how are you my thread?");
assertEquals((await once(worker, "message"))[0], "I'm fine!");
const data = (await once(worker, "message"))[0];
// data.threadId can be 1 when this test is run individually
if (data.threadId === 1) data.threadId = 3;
assertObjectMatch(data, {
isMainThread: false,
threadId: 3,
workerData: ["hey", true, false, 2],
envData: ["test", { test: "random", random: "test" }],
});
worker.terminate();
},
sanitizeResources: false,
});
Deno.test({
name: "[worker_threads] Worker eval",
async fn() {
const worker = new workerThreads.Worker(
`
import { parentPort } from "node:worker_threads";
parentPort.postMessage("It works!");
`,
{
eval: true,
},
);
assertEquals((await once(worker, "message"))[0], "It works!");
worker.terminate();
},
});
Deno.test({
name: "[worker_threads] worker thread with type module",
fn() {
const worker = new workerThreads.Worker(
new URL("./testdata/worker_module/index.js", import.meta.url),
);
worker.terminate();
},
});
Deno.test({
name: "[worker_threads] inheritances",
async fn() {
const worker = new workerThreads.Worker(
`
import { EventEmitter } from "node:events";
import { parentPort } from "node:worker_threads";
parentPort.postMessage(parentPort instanceof EventTarget);
await new Promise(resolve => setTimeout(resolve, 100));
parentPort.postMessage(parentPort instanceof EventEmitter);
`,
{
eval: true,
},
);
assertEquals((await once(worker, "message"))[0], true);
assertEquals((await once(worker, "message"))[0], false);
assert(worker instanceof EventEmitter);
assert(!(worker instanceof EventTarget));
worker.terminate();
},
});
Deno.test({
name: "[worker_threads] Worker workerData",
async fn() {
const worker = new workerThreads.Worker(
new URL("./testdata/worker_threads.mjs", import.meta.url),
{
workerData: null,
},
);
worker.postMessage("Hello, how are you my thread?");
await once(worker, "message");
assertEquals((await once(worker, "message"))[0].workerData, null);
worker.terminate();
const worker1 = new workerThreads.Worker(
new URL("./testdata/worker_threads.mjs", import.meta.url),
);
worker1.postMessage("Hello, how are you my thread?");
await once(worker1, "message");
assertEquals((await once(worker1, "message"))[0].workerData, undefined);
worker1.terminate();
},
});
Deno.test({
name: "[worker_threads] Worker with relative path",
async fn() {
const worker = new workerThreads.Worker(relative(
Deno.cwd(),
fromFileUrl(new URL("./testdata/worker_threads.mjs", import.meta.url)),
));
worker.postMessage("Hello, how are you my thread?");
assertEquals((await once(worker, "message"))[0], "I'm fine!");
worker.terminate();
},
});
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