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import { expect, test } from "bun:test";
import { bunEnv, bunExe } from "harness";
import path from "path";
import * as wt from "worker_threads";
test("worker", done => {
const worker = new Worker(new URL("worker-fixture.js", import.meta.url).href, {
smol: true,
});
expect(worker.threadId).toBe(1);
worker.postMessage("hello");
worker.onerror = e => {
done(e.error);
};
worker.onmessage = e => {
try {
expect(e.data).toEqual("initial message");
} catch (e) {
done(e);
} finally {
worker.terminate();
done();
}
worker.terminate();
done();
};
});
test("worker-env", done => {
const worker = new Worker(new URL("worker-fixture-env.js", import.meta.url).href, {
env: {
hello: "world",
another_key: 123 as any,
},
});
worker.postMessage("hello");
worker.onerror = e => {
done(e.error);
};
worker.onmessage = e => {
try {
expect(e.data).toEqual({
env: {
hello: "world",
another_key: "123",
},
hello: "world",
});
} catch (e) {
done(e);
} finally {
worker.terminate();
done();
}
};
});
test("worker-env with a lot of properties", done => {
const obj: any = {};
for (let i = 0; i < 1000; i++) {
obj["prop " + i] = Math.random().toString();
}
const worker = new Worker(new URL("worker-fixture-env.js", import.meta.url).href, {
env: obj,
});
worker.postMessage("hello");
worker.onerror = e => {
done(e.error);
};
worker.onmessage = e => {
try {
expect(e.data).toEqual({
env: obj,
hello: undefined,
});
} catch (e) {
done(e);
} finally {
worker.terminate();
done();
}
};
});
test("sending 50 messages should just work", done => {
const worker = new Worker(new URL("worker-fixture-many-messages.js", import.meta.url).href, {});
worker.postMessage("initial message");
worker.addEventListener("message", ({ data }) => {
if (data.done) {
worker.terminate();
done();
} else {
worker.postMessage({ i: data.i + 1 });
}
});
});
test("worker with event listeners doesnt close event loop", done => {
const x = Bun.spawn({
cmd: [bunExe(), path.join(import.meta.dir, "many-messages-event-loop.mjs"), "worker-fixture-many-messages.js"],
env: bunEnv,
stdio: ["inherit", "pipe", "inherit"],
});
const timer = setTimeout(() => {
x.kill();
done(new Error("timeout"));
}, 1000);
x.exited.then(async code => {
clearTimeout(timer);
if (code !== 0) {
done(new Error("exited with non-zero code"));
} else {
const text = await new Response(x.stdout).text();
if (!text.includes("done")) {
console.log({ text });
done(new Error("event loop killed early"));
} else {
done();
}
}
});
});
test("worker with event listeners doesnt close event loop 2", done => {
const x = Bun.spawn({
cmd: [bunExe(), path.join(import.meta.dir, "many-messages-event-loop.mjs"), "worker-fixture-many-messages2.js"],
env: bunEnv,
stdio: ["inherit", "pipe", "inherit"],
});
const timer = setTimeout(() => {
x.kill();
done(new Error("timeout"));
}, 1000);
x.exited.then(async code => {
clearTimeout(timer);
if (code !== 0) {
done(new Error("exited with non-zero code"));
} else {
const text = await new Response(x.stdout).text();
if (!text.includes("done")) {
console.log({ text });
done(new Error("event loop killed early"));
} else {
done();
}
}
});
});
test("worker with process.exit", done => {
const worker = new Worker(new URL("worker-fixture-process-exit.js", import.meta.url).href, {
smol: true,
});
worker.addEventListener("close", e => {
try {
expect(e.code).toBe(2);
} catch (e) {
done(e);
}
done();
});
});
test("worker_threads with process.exit", done => {
const worker = new wt.Worker(new URL("worker-fixture-process-exit.js", import.meta.url).href, {
smol: true,
});
worker.on("exit", event => {
try {
expect(event).toBe(2);
} catch (e) {
done(e);
}
done();
});
});
test("worker_threads terminate", async () => {
const worker = new wt.Worker(new URL("worker-fixture-hang.js", import.meta.url).href, {
smol: true,
});
const code = await worker.terminate();
expect(code).toBe(0);
});
test("worker_threads with process.exit (delay) and terminate", async () => {
const worker2 = new wt.Worker(new URL("worker-fixture-process-exit.js", import.meta.url).href, {
smol: true,
});
await Bun.sleep(200);
const code2 = await worker2.terminate();
expect(code2).toBe(2);
});
test.skip("terminating forcefully properly interrupts", async () => {
const worker2 = new wt.Worker(new URL("worker-fixture-while-true.js", import.meta.url).href, {});
await new Promise<void>(done => {
worker2.on("message", () => done());
});
const code2 = await worker2.terminate();
expect(code2).toBe(0);
});
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