Ticket #57394: 57394-create-username.test.js.diff

new file tests/e2e/specs/profile/username.test.js

@@ +1 @@
+import {
+        visitAdminPage,
+        createUser,
+} from '@wordpress/e2e-test-utils';
+
+describe( 'User Profile', () => {
+        it( 'Should not allow new user username as the email address of another profile', async () => {
+
+                // Creates a user `user1@example.com`.
+                await createUser('user1');
+
+                await visitAdminPage('user-new.php');
+                await page.waitForSelector('#user_login', {
+                        visible: true
+                });
+                await page.$eval('#user_login', (el, value) => el.value = value, 'user1@example.com');
+                await page.$eval('#email', (el, value) => el.value = value, 'user2@example.com');
+
+                await page.click('#send_user_notification');
+
+                await Promise.all([page.click('#createusersub'), page.waitForNavigation({
+                        waitUntil: 'networkidle0'
+                })]);
+
+                let adminNoticeErrors = await page.waitForSelector('.error');
+
+                expect(
+                        await adminNoticeErrors.evaluate((element) => element.textContent)
+                ).toContain('This username is not available. Please choose another one.');
+        } );
+} );