Bump jest from 26.6.3 to 27.2.0 (#14722)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Suzanne Aitchison <suzanne@forem.com>

app/javascript/shared/components/__tests__/dateTime.test.jsx

@@ -10,12 +10,12 @@ import '../../../../assets/javascripts/utilities/localDateTime';
 /* global globalThis timestampToLocalDateTimeLong timestampToLocalDateTimeShort */
 
 describe('<DateTime />', () => {
-  it('should have no a11y violations', async () => {
-    afterAll(() => {
-      delete globalThis.timestampToLocalDateTimeLong;
-      delete globalThis.timestampToLocalDateTimeShort;
-    });
+  afterAll(() => {
+    delete globalThis.timestampToLocalDateTimeLong;
+    delete globalThis.timestampToLocalDateTimeShort;
+  });
 
+  it('should have no a11y violations', async () => {
     const { container } = render(
       <DateTime
         className="date-time"

jest.config.js

@@ -53,4 +53,5 @@ module.exports = {
     'jest-watch-typeahead/filename',
     'jest-watch-typeahead/testname',
   ],
+  testEnvironment: 'jsdom',
 };

package.json

@@ -116,7 +116,7 @@
     "eslint-plugin-react": "^7.25.1",
     "faker": "^5.5.3",
     "husky": "^7.0.2",
-    "jest": "26.6.3",
+    "jest": "27.2.0",
     "jest-axe": "^4.1.0",
     "jest-fetch-mock": "^3.0.3",
     "jest-watch-typeahead": "^0.6.3",

testSetup.js

@@ -2,6 +2,8 @@
 import 'jest-axe/extend-expect';
 import './app/assets/javascripts/lib/xss';
 
+global.setImmediate = global.setTimeout;
+
 process.on('unhandledRejection', (error) => {
   // Errors thrown here are typically fetch responses that have not been mocked.
   throw error;