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nodejs/test/parallel/test-vm-timeout-escape-promise.js
Joyee Cheung 2d22820acf
test: make the vm timeout escape tests more lenient
Previously the tests required that Node.js finish the initialization
of the watchdog thread and fires the timeout within 100ms, which
can be difficult on certain systems under load. This patch
relaxes the requirement to 2000ms. If there is a bug and the
timeout can actually be escaped, raising the timeout to 2000ms
would not make a difference anyway.

PR-URL: https://github.com/nodejs/node/pull/44433
Refs: https://github.com/nodejs/reliability/issues/333
Refs: https://github.com/nodejs/reliability/issues/361
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
2022-09-01 02:29:26 +08:00

40 lines
870 B
JavaScript

'use strict';
// https://github.com/nodejs/node/issues/3020
// Promises used to allow code to escape the timeout
// set for runInContext, runInNewContext, and runInThisContext.
require('../common');
const assert = require('assert');
const vm = require('vm');
const NS_PER_MS = 1000000n;
const hrtime = process.hrtime.bigint;
function loop() {
const start = hrtime();
while (1) {
const current = hrtime();
const span = (current - start) / NS_PER_MS;
if (span >= 2000n) {
throw new Error(
`escaped timeout at ${span} milliseconds!`);
}
}
}
assert.throws(() => {
vm.runInNewContext(
'Promise.resolve().then(() => loop()); loop();',
{
hrtime,
loop
},
{ timeout: 5, microtaskMode: 'afterEvaluate' }
);
}, {
code: 'ERR_SCRIPT_EXECUTION_TIMEOUT',
message: 'Script execution timed out after 5ms'
});