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test/parallel/test-worker-terminate-microtask-loop.js

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+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const { Worker } = require('worker_threads');
+
+// Verify that `.terminate()` interrupts the microtask queue.
+
+const worker = new Worker(`
+function loop() { Promise.resolve().then(loop); } loop();
+require('worker_threads').parentPort.postMessage('up');
+`, { eval: true });
+
+worker.once('message', common.mustCall(() => {
+  setImmediate(() => worker.terminate());
+}));
+
+worker.once('exit', common.mustCall((code) => {
+  assert.strictEqual(code, 1);
+}));