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| Current File : //home/ubuntu/node-v16.18.1/test/async-hooks/test-async-local-storage-errors.js |
'use strict';
const common = require('../common');
const assert = require('assert');
const { AsyncLocalStorage } = require('async_hooks');
const vm = require('vm');
// err1 is emitted sync as a control - no events
// err2 is emitted after a timeout - uncaughtExceptionMonitor
// + uncaughtException
// err3 is emitted after some awaits - unhandledRejection
// err4 is emitted during handling err3 - uncaughtExceptionMonitor
// err5 is emitted after err4 from a VM lacking hooks - unhandledRejection
// + uncaughtException
const asyncLocalStorage = new AsyncLocalStorage();
const callbackToken = { callbackToken: true };
const awaitToken = { awaitToken: true };
let i = 0;
// Redefining the uncaughtExceptionHandler is a bit odd, so we just do this
// so we can track total invocations
let underlyingExceptionHandler;
const exceptionHandler = common.mustCall(function(...args) {
return underlyingExceptionHandler.call(this, ...args);
}, 2);
process.setUncaughtExceptionCaptureCallback(exceptionHandler);
const exceptionMonitor = common.mustCall((err, origin) => {
if (err.message === 'err2') {
assert.strictEqual(origin, 'uncaughtException');
assert.strictEqual(asyncLocalStorage.getStore(), callbackToken);
} else if (err.message === 'err4') {
assert.strictEqual(origin, 'unhandledRejection');
assert.strictEqual(asyncLocalStorage.getStore(), awaitToken);
} else {
assert.fail('unknown error ' + err);
}
}, 2);
process.on('uncaughtExceptionMonitor', exceptionMonitor);
function fireErr1() {
underlyingExceptionHandler = common.mustCall(function(err) {
++i;
assert.strictEqual(err.message, 'err2');
assert.strictEqual(asyncLocalStorage.getStore(), callbackToken);
}, 1);
try {
asyncLocalStorage.run(callbackToken, () => {
setTimeout(fireErr2, 0);
throw new Error('err1');
});
} catch (e) {
assert.strictEqual(e.message, 'err1');
assert.strictEqual(asyncLocalStorage.getStore(), undefined);
}
}
function fireErr2() {
process.nextTick(() => {
assert.strictEqual(i, 1);
fireErr3();
});
throw new Error('err2');
}
function fireErr3() {
assert.strictEqual(asyncLocalStorage.getStore(), callbackToken);
const rejectionHandler3 = common.mustCall((err) => {
assert.strictEqual(err.message, 'err3');
assert.strictEqual(asyncLocalStorage.getStore(), awaitToken);
process.off('unhandledRejection', rejectionHandler3);
fireErr4();
}, 1);
process.on('unhandledRejection', rejectionHandler3);
async function awaitTest() {
await null;
throw new Error('err3');
}
asyncLocalStorage.run(awaitToken, awaitTest);
}
const uncaughtExceptionHandler4 = common.mustCall(
function(err) {
assert.strictEqual(err.message, 'err4');
assert.strictEqual(asyncLocalStorage.getStore(), awaitToken);
fireErr5();
}, 1);
function fireErr4() {
assert.strictEqual(asyncLocalStorage.getStore(), awaitToken);
underlyingExceptionHandler = uncaughtExceptionHandler4;
// re-entrant check
Promise.reject(new Error('err4'));
}
function fireErr5() {
assert.strictEqual(asyncLocalStorage.getStore(), awaitToken);
underlyingExceptionHandler = () => {};
const rejectionHandler5 = common.mustCall((err) => {
assert.strictEqual(err.message, 'err5');
assert.strictEqual(asyncLocalStorage.getStore(), awaitToken);
process.off('unhandledRejection', rejectionHandler5);
}, 1);
process.on('unhandledRejection', rejectionHandler5);
const makeOrphan = vm.compileFunction(`(${String(() => {
async function main() {
await null;
Promise.resolve().then(() => {
throw new Error('err5');
});
}
main();
})})()`);
makeOrphan();
}
fireErr1();
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