fix(internet): fix invalid emails in some locales (#1746)

Author: Matt Mayer

src/locales/el/person/last_name.ts

@@ -32,7 +32,7 @@ export default [
   'Αρβανίτης',
   'Αργυριάδης',
   'Ασπάσιος',
-  'Αυγερινός (επώνυμο)',
+  'Αυγερινός',
   'Βάμβας',
   'Βαμβακάς',
   'Βαρνακιώτης',
@@ -147,7 +147,7 @@ export default [
   'Λόντος',
   'Λύτρας',
   'Λαγός',
-  'Λαιμός (επώνυμο)',
+  'Λαιμός',
   'Λαμέρας',
   'Λαμπρόπουλος',
   'Λειβαδάς',

src/locales/fa/person/last_name.ts

@@ -57,7 +57,7 @@ export default [
   'کوشکی',
   'کهنمویی',
   'کیان',
-  'کیانی (نام خانوادگی)',
+  'کیانی',
   'کیمیایی',
   'گل محمدی',
   'گلپایگانی',

src/modules/internet/index.ts

@@ -91,6 +91,13 @@ export class InternetModule {
       );
 
     let localPart: string = this.userName(firstName, lastName);
+    // Strip any special characters from the local part of the email address
+    // This could happen if invalid chars are passed in manually in the firstName/lastName
+    localPart = localPart.replace(/[^A-Za-z0-9._+\-]+/g, '');
+
+    // The local part of an email address is limited to 64 chars per RFC 3696
+    // We limit to 50 chars to be more realistic
+    localPart = localPart.substring(0, 50);
     if (options?.allowSpecialCharacters) {
       const usernameChars: string[] = '._-'.split('');
       const specialChars: string[] = ".!#$%&'*+-/=?^_`{|}~".split('');

test/internet.spec.ts

@@ -156,6 +156,25 @@ describe('internet', () => {
           expect(faker.definitions.internet.free_email).toContain(suffix);
         });
 
+        it('should return a valid email for very long names', () => {
+          const longFirstName =
+            'Elizabeth Alexandra Mary Jane Annabel Victoria';
+          const longSurname = 'Smith Jones Davidson Brown White Greene Black';
+          const email = faker.internet.email(longFirstName, longSurname);
+          // should truncate to 50 chars
+          // e.g. ElizabethAlexandraMaryJaneAnnabelVictoria.SmithJon@yahoo.com
+          expect(email).toSatisfy(validator.isEmail);
+          const localPart = email.split('@')[0];
+          expect(localPart.length).toBeLessThanOrEqual(50);
+        });
+
+        it('should return a valid email for names with invalid chars', () => {
+          const email = faker.internet.email('Matthew (Matt)', 'Smith');
+          // should strip invalid chars
+          // e.g. MatthewMatt_Smith@yahoo.com
+          expect(email).toSatisfy(validator.isEmail);
+        });
+
         it('should return an email with special characters', () => {
           const email = faker.internet.email('Mike', 'Smith', null, {
             allowSpecialCharacters: true,