nodejs/test/parallel/test-worker-terminate-source-map.js

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'use strict';
const common = require('../common');
const tmpdir = require('../common/tmpdir');
const assert = require('assert');
// Attempts to test that the source map JS code run on process shutdown
// does not call any user-defined JS code.
const { Worker, workerData, parentPort } = require('worker_threads');
if (!workerData) {
tmpdir.refresh();
process.env.NODE_V8_COVERAGE = tmpdir.path;
// Count the number of some calls that should not be made.
const callCount = new Int32Array(new SharedArrayBuffer(4));
const w = new Worker(__filename, { workerData: { callCount } });
w.on('message', common.mustCall(() => w.terminate()));
w.on('exit', common.mustCall(() => {
assert.strictEqual(callCount[0], 0);
}));
return;
}
const { callCount } = workerData;
function increaseCallCount() { callCount[0]++; }
// Increase the call count when a forbidden method is called.
Object.getPrototypeOf((new Map()).entries()).next = increaseCallCount;
Map.prototype.entries = increaseCallCount;
Object.keys = increaseCallCount;
Object.create = increaseCallCount;
Object.hasOwnProperty = increaseCallCount;
Object.defineProperty(Object.prototype, 'value', {
get: increaseCallCount,
set: increaseCallCount
});
parentPort.postMessage('done');