fix: notifications should be fire&forget rather than having a timeout

CHANGELOG.md

@@ -11,6 +11,7 @@
 - `[jest-config]` Support `.mjs` config files on Windows as well ([#9558](https://github.com/facebook/jest/pull/9558))
 - `[jest-cli]` Set `coverageProvider` correctly when provided in config ([#9562](https://github.com/facebook/jest/pull/9562))
 - `[jest-matcher-utils]` Fix diff highlight of symbol-keyed object. ([#9499](https://github.com/facebook/jest/pull/9499))
+- `[@jest/reporters]` Notifications should be fire&forget rather than having a timeout ([#9567](https://github.com/facebook/jest/pull/9567))
 - `[jest-resolve]` Fix module identity preservation with symlinks and browser field resolution ([#9511](https://github.com/facebook/jest/pull/9511))
 - `[jest-resolve]` Do not confuse directories with files ([#8912](https://github.com/facebook/jest/pull/8912))
 - `[jest-resolve]` `moduleNameMapper` should take precedence over Node core modules ([#9563](https://github.com/facebook/jest/pull/9563))

e2e/__tests__/detectOpenHandles.ts

@@ -6,7 +6,7 @@
  */
 
 import {wrap} from 'jest-snapshot-serializer-raw';
-import {onNodeVersions} from '@jest/test-utils';
+import {onNodeVersions, skipSuiteOnWindows} from '@jest/test-utils';
 import runJest, {runContinuous} from '../runJest';
 
 try {
@@ -71,6 +71,18 @@ it('does not report promises', () => {
   expect(textAfterTest).toBe('');
 });
 
+describe('notify', () => {
+  skipSuiteOnWindows();
+
+  it('does not report --notify flag', () => {
+    // The test here is basically that it exits cleanly without reporting anything (does not need `until`)
+    const {stderr} = runJest('detect-open-handles', ['notify', '--notify']);
+    const textAfterTest = getTextAfterTest(stderr);
+
+    expect(textAfterTest).toBe('');
+  });
+});
+
 onNodeVersions('>=11', () => {
   it('does not report timeouts using unref', () => {
     // The test here is basically that it exits cleanly without reporting anything (does not need `until`)

e2e/detect-open-handles/__tests__/notify.js

@@ -0,0 +1,10 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+test('something', () => {
+  expect(true).toBe(true);
+});

packages/jest-reporters/src/notify_reporter.ts

@@ -10,6 +10,7 @@ import * as util from 'util';
 import exit = require('exit');
 import {Config} from '@jest/types';
 import {AggregatedResult} from '@jest/test-result';
+import {pluralize} from 'jest-util';
 import {Context, TestSchedulerContext} from './types';
 import BaseReporter from './base_reporter';
 
@@ -73,12 +74,13 @@ export default class NotifyReporter extends BaseReporter {
         (notifyMode === 'failure-change' && statusChanged))
     ) {
       const title = util.format('%s%d%% Passed', packageName, 100);
-      const message = util.format(
-        (isDarwin ? '\u2705 ' : '') + '%d tests passed',
+      const message = `${isDarwin ? '\u2705 ' : ''}${pluralize(
+        'test',
         result.numPassedTests,
-      );
+      )} passed`;
 
-      this._notifier.notify({icon, message, title});
+      // @ts-ignore: https://github.com/DefinitelyTyped/DefinitelyTyped/pull/42303
+      this._notifier.notify({icon, message, timeout: false, title});
     } else if (
       testsHaveRun &&
       !success &&
@@ -106,17 +108,19 @@ export default class NotifyReporter extends BaseReporter {
       const quitAnswer = 'Exit tests';
 
       if (!watchMode) {
-        this._notifier.notify({icon, message, title});
+        // @ts-ignore: https://github.com/DefinitelyTyped/DefinitelyTyped/pull/42303
+        this._notifier.notify({icon, message, timeout: false, title});
       } else {
         this._notifier.notify(
           {
             actions: [restartAnswer, quitAnswer],
             closeLabel: 'Close',
             icon,
             message,
-            timeout: 10,
+            timeout: false,
             title,
-          },
+            // https://github.com/DefinitelyTyped/DefinitelyTyped/pull/42303
+          } as any,
           (err, _, metadata) => {
             if (err || !metadata) {
               return;