test: remove common.disableCrashOnUnhandledRejection

Use the --unhandled-rejections=none CLI flag instead.

PR-URL: https://github.com/nodejs/node/pull/38210
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

doc/guides/writing-tests.md

@@ -250,11 +250,9 @@ countdown.dec(); // The countdown callback will be invoked now.
 
 When writing tests involving promises, it is generally good to wrap the
 `onFulfilled` handler, otherwise the test could successfully finish if the
-promise never resolves (pending promises do not keep the event loop alive). The
-`common` module automatically adds a handler that makes the process crash - and
-hence, the test fail - in the case of an `unhandledRejection` event. It is
-possible to disable it with `common.disableCrashOnUnhandledRejection()` if
-needed.
+promise never resolves (pending promises do not keep the event loop alive).
+Node.js automatically crashes - and hence, the test fails - in the case of an
+`unhandledRejection` event.
 
 ```js
 const common = require('../common');

test/common/README.md

@@ -61,14 +61,6 @@ On non-Windows platforms, this always returns `true`.
 
 Creates a 10 MB file of all null characters.
 
-### `disableCrashOnUnhandledRejection()`
-
-Removes the `process.on('unhandledRejection')` handler that crashes the process
-after a tick. The handler is useful for tests that use Promises and need to make
-sure no unexpected rejections occur, because currently they result in silent
-failures. However, it is useful in some rare cases to disable it, for example if
-the `unhandledRejection` hook is directly used by the test.
-
 ### `enoughTestCpu`
 
 * [<boolean>][]

test/common/index.js

@@ -628,10 +628,6 @@ function getBufferSources(buf) {
   return [...getArrayBufferViews(buf), new Uint8Array(buf).buffer];
 }
 
-function disableCrashOnUnhandledRejection() {
-  process.on('unhandledRejection', () => {});
-}
-
 function getTTYfd() {
   // Do our best to grab a tty fd.
   const tty = require('tty');
@@ -732,7 +728,6 @@ const common = {
   canCreateSymLink,
   childShouldThrowAndAbort,
   createZeroFilledFile,
-  disableCrashOnUnhandledRejection,
   expectsError,
   expectWarning,
   gcUntil,

test/common/index.mjs

@@ -46,7 +46,6 @@ const {
   skipIf32Bits,
   getArrayBufferViews,
   getBufferSources,
-  disableCrashOnUnhandledRejection,
   getTTYfd,
   runWithInvalidFD
 } = common;
@@ -92,7 +91,6 @@ export {
   skipIf32Bits,
   getArrayBufferViews,
   getBufferSources,
-  disableCrashOnUnhandledRejection,
   getTTYfd,
   runWithInvalidFD,
   createRequire

test/common/inspector-helper.js

@@ -25,7 +25,6 @@ function spawnChildProcess(inspectorFlags, scriptContents, scriptFile) {
   const handler = tearDown.bind(null, child);
   process.on('exit', handler);
   process.on('uncaughtException', handler);
-  common.disableCrashOnUnhandledRejection();
   process.on('unhandledRejection', handler);
   process.on('SIGINT', handler);
 

test/parallel/test-async-wrap-pop-id-during-load.js

@@ -1,9 +1,8 @@
 'use strict';
 
-const common = require('../common');
+require('../common');
 
 if (process.argv[2] === 'async') {
-  common.disableCrashOnUnhandledRejection();
   async function fn() {
     fn();
     throw new Error();
@@ -16,7 +15,7 @@ const { spawnSync } = require('child_process');
 
 const ret = spawnSync(
   process.execPath,
-  ['--stack_size=150', __filename, 'async'],
+  ['--unhandled-rejections=none', '--stack_size=150', __filename, 'async'],
   { maxBuffer: Infinity }
 );
 assert.strictEqual(ret.status, 0,

test/parallel/test-no-harmony-top-level-await.mjs

@@ -2,10 +2,7 @@
 
 import {
   mustCall,
-  disableCrashOnUnhandledRejection
 } from '../common/index.mjs';
 
-disableCrashOnUnhandledRejection();
-
 process.on('unhandledRejection', mustCall());
 Promise.reject(new Error('should not be fatal error'));

test/parallel/test-promise-handled-rejection-no-warning.js

@@ -2,7 +2,6 @@
 const common = require('../common');
 
 // This test verifies that DEP0018 does not occur when rejections are handled.
-common.disableCrashOnUnhandledRejection();
 process.on('warning', common.mustNotCall());
 process.on('unhandledRejection', common.mustCall());
 Promise.reject(new Error());

test/parallel/test-promise-unhandled-error.js

@@ -5,8 +5,6 @@ const common = require('../common');
 const Countdown = require('../common/countdown');
 const assert = require('assert');
 
-common.disableCrashOnUnhandledRejection();
-
 // Verify that unhandled rejections always trigger uncaught exceptions instead
 // of triggering unhandled rejections.
 

test/parallel/test-promise-unhandled-silent-no-hook.js

@@ -4,8 +4,6 @@
 const common = require('../common');
 const assert = require('assert');
 
-common.disableCrashOnUnhandledRejection();
-
 // Verify that ignoring unhandled rejection works fine and that no warning is
 // logged even though there is no unhandledRejection hook attached.
 

test/parallel/test-promise-unhandled-silent.js

@@ -3,8 +3,6 @@
 
 const common = require('../common');
 
-common.disableCrashOnUnhandledRejection();
-
 // Verify that ignoring unhandled rejection works fine and that no warning is
 // logged.
 

test/parallel/test-promise-unhandled-throw-handler.js

@@ -5,8 +5,6 @@ const common = require('../common');
 const Countdown = require('../common/countdown');
 const assert = require('assert');
 
-common.disableCrashOnUnhandledRejection();
-
 // Verify that the unhandledRejection handler prevents triggering
 // uncaught exceptions
 

test/parallel/test-promise-unhandled-warn.js

@@ -3,8 +3,6 @@
 
 const common = require('../common');
 
-common.disableCrashOnUnhandledRejection();
-
 // Verify that ignoring unhandled rejection works fine and that no warning is
 // logged.
 

test/parallel/test-promises-unhandled-proxy-rejections.js

@@ -1,8 +1,7 @@
+// Flags: --unhandled-rejections=none
 'use strict';
 const common = require('../common');
 
-common.disableCrashOnUnhandledRejection();
-
 function throwErr() {
   throw new Error('Error from proxy');
 }

test/parallel/test-promises-unhandled-rejections.js

@@ -1,10 +1,9 @@
+// Flags: --unhandled-rejections=none
 'use strict';
 const common = require('../common');
 const assert = require('assert');
 const { inspect } = require('util');
 
-common.disableCrashOnUnhandledRejection();
-
 const asyncTest = (function() {
   let asyncTestsEnabled = false;
   let asyncTestLastCheck;
@@ -643,7 +642,6 @@ asyncTest('Throwing an error inside a rejectionHandled handler goes to' +
           ' unhandledException, and does not cause .catch() to throw an ' +
           'exception', function(done) {
   clean();
-  common.disableCrashOnUnhandledRejection();
   const e = new Error();
   const e2 = new Error();
   const tearDownException = setupException(function(err) {

test/parallel/test-promises-unhandled-symbol-rejections.js

@@ -2,8 +2,6 @@
 'use strict';
 const common = require('../common');
 
-common.disableCrashOnUnhandledRejection();
-
 const expectedValueWarning = ['Symbol()'];
 const expectedPromiseWarning = ['Unhandled promise rejection. ' +
   'This error originated either by throwing ' +

test/parallel/test-trace-events-promises.js

@@ -6,8 +6,6 @@ const fs = require('fs');
 const path = require('path');
 const tmpdir = require('../common/tmpdir');
 
-common.disableCrashOnUnhandledRejection();
-
 if (process.argv[2] === 'child') {
   const p = Promise.reject(1);  // Handled later
   Promise.reject(2);  // Unhandled