TF-4124 Add unit test for isValidEmail and isEmailLocalhost

2025-10-28 11:57:44 +07:00
parent 3a9b8d8205
commit 1c7778d6cc
4 changed files with 184 additions and 38 deletions
@@ -0,0 +1,91 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:tmail_ui_user/features/email/presentation/utils/email_utils.dart';
+
+void main() {
+  group('EmailUtils::isValidEmail', () {
+    group('Valid public domain emails', () {
+      final validEmails = [
+        'alice@example.com',
+        'bob.smith@linagora.com',
+        'user_name@sub.domain.org',
+        'user-name@domain.io',
+        'user+folder@gmail.com',
+        '"quoted.name"@example.com',
+        'first.last@123domain.net',
+      ];
+
+      for (final email in validEmails) {
+        test('should return true for "$email"', () {
+          expect(EmailUtils.isValidEmail(email), isTrue);
+        });
+      }
+    });
+
+    group('Valid localhost emails', () {
+      final localhostEmails = [
+        'root@localhost',
+        'admin@localhost',
+        'test_user@localhost',
+        'a.b.c@localhost',
+      ];
+
+      for (final email in localhostEmails) {
+        test('should return true for "$email"', () {
+          expect(EmailUtils.isValidEmail(email), isTrue);
+        });
+      }
+    });
+
+    group('Invalid emails', () {
+      final invalidEmails = [
+        '', // empty
+        '   ', // whitespace
+        'plainaddress', // no @
+        '@domain.com', // missing local-part
+        'user@', // missing domain
+        'user@.', // invalid domain
+        'user@domain..com', // double dot
+        'user@@domain.com', // double @
+        '.user@domain.com', // starts with dot
+        'user.@domain.com', // ends with dot
+        'user..name@domain.com', // double dot local
+        'user@-domain.com', // domain starts with dash
+        'user@domain-.com', // domain ends with dash
+        'user@domain,com', // invalid character
+        'user domain@example.com', // space inside
+        'user@domain@domain.com', // multiple @
+        'user@localhost.', // trailing dot
+        'user@localhost:8080', // port
+        'user@localhost/path', // path
+      ];
+
+      for (final email in invalidEmails) {
+        test('should return false for "$email"', () {
+          expect(EmailUtils.isValidEmail(email), isFalse);
+        });
+      }
+    });
+
+    group('⚙️ Edge cases & error catching', () {
+      test('should return false for malformed quoted string', () {
+        expect(EmailUtils.isValidEmail('"ab..cd"@example.com'), isFalse);
+      });
+
+      test('should return false for domain with brackets but invalid IP', () {
+        expect(EmailUtils.isValidEmail('user@[999.999.999.999]'), isFalse);
+      });
+
+      test('should return false for missing domain after @', () {
+        expect(EmailUtils.isValidEmail('user@'), isFalse);
+      });
+
+      test('should return false for special chars in local part', () {
+        expect(EmailUtils.isValidEmail('user()@domain.com'), isFalse);
+      });
+
+      test('should trim spaces before validating', () {
+        expect(EmailUtils.isValidEmail('  alice@example.com  '), isTrue);
+      });
+    });
+  });
+}