#46 fixed error handling

backend/src/main/java/com/quiz/converter/handlers/QuestionValidationHandler.java

@@ -18,17 +18,17 @@ public class QuestionValidationHandler {
     }
 
     public void validateQuestion() {
-        if (state.getName().isEmpty()) {
+        if (state.getAnswerOptions().isEmpty()) {
             state.getErrors().add(QuestionErrorType.NO_ANSWER_OPTIONS_FOUND);
         }
         var correctAnswerCount = state.getAnswerOptions().stream().filter(Answer::isCorrect).count();
         if (state.getType().equals(QuestionType.SINGLE_CHOICE) && correctAnswerCount > 1) {
             state.getErrors().add(QuestionErrorType.ANSWER_OPTIONS_DONT_MATCH_TYPE);
         }
-        else if (state.getType().equals(QuestionType.UNKNOWN)) {
+        if (state.getType().equals(QuestionType.UNKNOWN)) {
             state.getErrors().add(QuestionErrorType.UNKNOWN_QUESTION_TYPE);
         }
-        else if (state.getType().equals(QuestionType.REGULAR_EXPRESSION)) {
+        if (state.getType().equals(QuestionType.REGULAR_EXPRESSION)) {
             for (var answerOption: state.getAnswerOptions()) {
                 try {
                     Pattern.compile(answerOption.getText());
@@ -38,7 +38,7 @@ public class QuestionValidationHandler {
             }
             state.getWarnings().add(QuestionWarningType.REGEX_RESTRICTION);
         }
-        else if (correctAnswerCount == 0) {
+        if (correctAnswerCount == 0) {
             state.getErrors().add(QuestionErrorType.NO_CORRECT_ANSWER_FOUND);
         }
     }