feat: add multi choice publish test validator

src/i18n/en/tests.json

@@ -14,7 +14,9 @@
     "hasOrphanQuestions": "Test has some orphan questions.",
     "hasCycle": "Test has cycle.",
     "notEndingFlow": "Test include some flows which never end.",
-    "notActiveTest": "Test is not active."
+    "notActiveTest": "Test is not active.",
+    "multiChoiceMustHaveFallback": "Multi choice must have fallback.",
+    "questionHasMultipleFallbacks": "Question has multiple fallbacks."
   },
   "messages": {
     "createSuccess": "Test Created Successfully."

src/i18n/fa/tests.json

@@ -14,7 +14,9 @@
     "hasOrphanQuestions": "تست شامل تعدادی سوال یتیم است.",
     "hasCycle": "تست شامل حلقه است.",
     "notEndingFlow": "تست شامل جریان بی پایان است.",
-    "notActiveTest": "تست مورد نظر فعال نیست."
+    "notActiveTest": "تست مورد نظر فعال نیست.",
+    "multiChoiceMustHaveFallback": "سوال چند انتخابی باید یک مسیر جایگزین داشته باشد.",
+    "questionHasMultipleFallbacks": "سوال چند جایگزین دارد!"
   },
   "messages": {
     "createSuccess": "تست با موفقیت ایجاد شد."

src/modules/tests/providers/publish-test-validator.provider.ts

@@ -7,6 +7,7 @@ import { QuestionTransitionType } from '@/modules/questions/enums/question-trans
 import { AppTimeoutException } from '@/common/exceptions/app-timeout.exception';
 import { QuestionTransition } from '@/modules/questions/entities/question-transition.entity';
 import { Question } from '@/modules/questions/entities/question.entity';
+import { MultiChoiceTransitionValidator } from '../validators/multi-choice-transition.validator';
 
 @Injectable()
 export class PublishTestValidatorProvider {
@@ -61,6 +62,8 @@ export class PublishTestValidatorProvider {
 
     const startQuestionId = startTransitions[0].toQuestion!.id;
 
+    MultiChoiceTransitionValidator.validate(test.questions, transitions);
+
     const transitionsGraph = new Map<number, QuestionTransition[]>();
 
     this.createTransitionsGraph(transitions, transitionsGraph);

src/modules/tests/validators/multi-choice-transition.validator.ts

@@ -8,7 +8,7 @@ import { MultiChoiceCondition } from '@/modules/questions/interfaces/multi-choic
 import { HttpStatus } from '@nestjs/common';
 
 export class MultiChoiceTransitionValidator {
-  public static validateMultiChoiceTransitions(
+  public static validate(
     questions: Question[],
     transitions: QuestionTransition[],
   ) {
@@ -29,7 +29,6 @@ export class MultiChoiceTransitionValidator {
         continue;
       }
 
-      // اگر transition شرطی داریم، باید fallback داشته باشیم.
       const hasDefault = outgoing.some(
         (t) => t.type === QuestionTransitionType.DEFAULT,
       );