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test-promises-unhandled-proxy-rejections.js
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test-promises-unhandled-proxy-rejections.js
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'use strict';
const common = require('../common');
common.disableCrashOnUnhandledRejection();
const expectedDeprecationWarning = ['Unhandled promise rejections are ' +
'deprecated. In the future, promise ' +
'rejections that are not handled will ' +
'terminate the Node.js process with a ' +
'non-zero exit code.', 'DEP0018'];
const expectedPromiseWarning = ['Unhandled promise rejection. ' +
'This error originated either by throwing ' +
'inside of an async function without a catch ' +
'block, or by rejecting a promise which was ' +
'not handled with .catch(). To terminate the ' +
'node process on unhandled promise rejection, ' +
'use the CLI flag `--unhandled-rejections=strict` (see ' +
'https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)'];
function throwErr() {
throw new Error('Error from proxy');
}
const thorny = new Proxy({}, {
getPrototypeOf: throwErr,
setPrototypeOf: throwErr,
isExtensible: throwErr,
preventExtensions: throwErr,
getOwnPropertyDescriptor: throwErr,
defineProperty: throwErr,
has: throwErr,
get: throwErr,
set: throwErr,
deleteProperty: throwErr,
ownKeys: throwErr,
apply: throwErr,
construct: throwErr
});
common.expectWarning({
DeprecationWarning: expectedDeprecationWarning,
UnhandledPromiseRejectionWarning: expectedPromiseWarning,
});
// Ensure this doesn't crash
Promise.reject(thorny);