Merge pull request #53 from Chat-Your-Way/CHAT-154-bugfix-nickname-field-not-accepted-special-symbols

Chat 154 bugfix nickname field not accepted special symbols

Author: Troha7

src/main/java/com/chat/yourway/annotation/validator/NicknameValidator.java

@@ -10,7 +10,8 @@
 
 public class NicknameValidator implements ConstraintValidator<NicknameValidation, String> {
 
-  private static final Pattern NICKNAME_PATTERN = Pattern.compile("^[a-zA-Z0-9а-яА-ЯІіЇї]{4,20}$");
+  private static final Pattern NICKNAME_PATTERN = Pattern.compile(
+      "^[a-zA-Z0-9а-яА-ЯІіЇї!@#$%^&*_\\-+=~?]{4,20}$");
 
   @Override
   public boolean isValid(String value, ConstraintValidatorContext context) {
@@ -23,13 +24,15 @@ public boolean isValid(String value, ConstraintValidatorContext context) {
       return false;
     } else if (!NICKNAME_PATTERN.matcher(value).matches()) {
       context
-          .buildConstraintViolationWithTemplate("The nickname is invalid")
+          .buildConstraintViolationWithTemplate(
+              "The nickname should be 4-20 characters long and include only letters, numbers or "
+              + "symbols [! @ # $ % ^ & * _ - + = ~ ?]")
           .addConstraintViolation();
       return false;
     } else if (PATTERN_SPACE.matcher(value).matches()) {
       context
-              .buildConstraintViolationWithTemplate("The nickname should not include space")
-              .addConstraintViolation();
+          .buildConstraintViolationWithTemplate("The nickname should not include space")
+          .addConstraintViolation();
       return false;
     }
 

src/test/java/com/chat/yourway/unit/annotation/validator/NicknameValidationValidatorTest.java

@@ -38,16 +38,19 @@ public void shouldPassValidator_whenUserInputNickname() {
     var nicknameFirstExample = "user123";
     var nicknameSecondExample = "Username123";
     var nicknameThirdExample = "abcd1234";
+    var nicknameWithSymbol = "Nickname!";
 
     // When
     var isValidFirstExample = nicknameValidator.isValid(nicknameFirstExample, context);
     var isValidSecondExample = nicknameValidator.isValid(nicknameSecondExample, context);
     var isValidThirdExample = nicknameValidator.isValid(nicknameThirdExample, context);
+    var isValid4Example = nicknameValidator.isValid(nicknameWithSymbol, context);
 
     // Then
     assertTrue(isValidFirstExample);
     assertTrue(isValidSecondExample);
     assertTrue(isValidThirdExample);
+    assertTrue(isValid4Example);
   }
 
   @DisplayName(
@@ -73,7 +76,7 @@ public void shouldFailValidator_whenUserInputNicknameWithInvalidLength() {
   public void shouldFailValidator_whenUserInputNicknameWithInvalidCharacters() {
     // Given
     var nicknameFirstExample = "user 123";
-    var nicknameSecondExample = "user@123";
+    var nicknameSecondExample = "user)123";
 
     // When
     var isValidFirstExample = nicknameValidator.isValid(nicknameFirstExample, context);