cyrtophora

commit 537b0063f7c46af20fba26e552c90587c93836c4
parent cb6f6204cba443e81c051d173f8d202091ece12a
Author: Jackson G. Kaindume <seestem@merely.tech>
Date:   Wed, 24 Aug 2022 21:47:36 +0200

[cyrto] add user input validation

Diffstat:
M
cyrto/lib/cyrtophora.dart
 | 
1
+
M
cyrto/lib/src/validate.dart
 | 
79
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
A
cyrto/test/validate_test.dart
 | 
66
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

3 files changed, 146 insertions(+), 0 deletions(-)
diff --git a/cyrto/lib/cyrtophora.dart b/cyrto/lib/cyrtophora.dart
@@ -4,3 +4,4 @@ library cyrtophora;
 
 export 'src/cyrtophora_base.dart';
 export 'src/utils.dart';
+export 'src/validate.dart';
diff --git a/cyrto/lib/src/validate.dart b/cyrto/lib/src/validate.dart
@@ -1 +1,80 @@
+import "package:cyrtophora/cyrtophora.dart";
 
+class Validate {
+  /// Validate username
+  static bool username(String username) {
+    // Username cannot be empty
+    if (username.isEmpty) {
+      return false;
+    }
+
+    // Username length cannot be greater than 15 characters
+    if (username.length > 15) {
+      return false;
+    }
+
+    final chars = username.split("");
+    var underscoreCount = 0;
+
+    for (var i = 0; i < chars.length; i++) {
+      // Username cannot start with a underscore (_)
+      if (i == 0 && chars[i] == '_') {
+        return false;
+      }
+
+      // Username can only contain letters, numbers, one dot and one underscore
+      if (chars[i] != '_') {
+        if (!isAlphanumeric(chars[i])) {
+          return false;
+        }
+      } else {
+        // Count underscores because name can have only one [ _ ] underscore
+        underscoreCount += 1;
+      }
+    }
+    // Username can have only one [ _ ] underscore
+    if (underscoreCount > 1) {
+      return false;
+    }
+    return true;
+  }
+
+  /// Validate fullname if it is provided
+  static bool fullname(String fullname) {
+    // Full Name cannot be empty
+    if (fullname.isEmpty) {
+      return false;
+    }
+
+    // Full Name cannot be more than 70 characters
+    if (fullname.length > 70) {
+      return false;
+    }
+
+    return true;
+  }
+
+  /// Validate password
+  static bool password(String password) {
+    // Password should be at least 10 characters long
+    if (password.length < 10) {
+      return false;
+    }
+    return true;
+  }
+
+  // TODO: better email verification
+  /// Validate email address
+  static bool email(String email) {
+    // Email address cannot be empty
+    if (email.isEmpty) {
+      return false;
+    }
+
+    // Email address should contain @ and . symbols
+    if (!email.contains('@') || !email.contains('.')) {
+      return false;
+    }
+    return true;
+  }
+}
diff --git a/cyrto/test/validate_test.dart b/cyrto/test/validate_test.dart
@@ -0,0 +1,66 @@
+import 'package:test/test.dart';
+import 'package:cyrtophora/cyrtophora.dart';
+
+void main() {
+  group('Test cyrtophora validator', () {
+    test('Test fullname validator', () {
+      final validName1 = "John Doe";
+      final validName2 = "Peter Bob Bunny Wailer";
+      final invalidName1 =
+          "kdfjafdjkdf dfjfdkdfjdf fdkjfdkjf dkfdfjdkfj dfdfjdfdkjf dfkjfdjdf fdkjfdjdkf fdnfdkjfd dffd dffdkfd fkdjfdj fdfdfdfdffdfdf dfkjf";
+      final invalidName2 = "";
+
+      expect(Validate.fullname(validName1), true);
+      expect(Validate.fullname(validName2), true);
+
+      // Name cannot be more than 70 characters long
+      expect(Validate.fullname(invalidName1), false);
+
+      // Name cannot be empty
+      expect(Validate.fullname(invalidName2), false);
+    });
+
+    test('Test username validator', () {
+      final validUsername1 = "cy6erlion";
+      final validUsername2 = "cy6er_lion";
+      final validUsername3 = "cy6er1ion2022";
+      final validUsername4 = "fishcanyon10";
+
+      final invalidUsername1 = "_cy6erlion";
+      final invalidUsername2 = "cy6er.lion";
+      final invalidUsername3 = "cy6er__lion";
+      final invalidUsername4 =
+          "cy6erlion1111111111111111111111111eweewewewewew";
+      final invalidUsername5 = "";
+
+      expect(Validate.username(validUsername1), true);
+      expect(Validate.username(validUsername2), true);
+      expect(Validate.username(validUsername3), true);
+      expect(Validate.username(validUsername4), true);
+
+      expect(Validate.username(invalidUsername1), false);
+      expect(Validate.username(invalidUsername2), false);
+      expect(Validate.username(invalidUsername3), false);
+      expect(Validate.username(invalidUsername4), false);
+      expect(Validate.username(invalidUsername5), false);
+    });
+
+    test('Test password validator', () {
+      final validPassword = "thisIs_a_P@ssword";
+      final invalidPassword = "short";
+
+      expect(Validate.password(validPassword), true);
+      expect(Validate.password(invalidPassword), false);
+    });
+
+    test('Test email validator', () {
+      final validEmail = "info@example.com";
+      final invalidEmail1 = "wrong";
+      final invalidEmail2 = "";
+
+      expect(Validate.email(validEmail), true);
+      expect(Validate.email(invalidEmail1), false);
+      expect(Validate.email(invalidEmail2), false);
+    });
+  });
+}