Add test submission feature for LLM checks without creating submissions; update API and UI components to support new functionality, enhancing task evaluation for teachers and challenge authors. Update localization for test check messages in English and Russian.

src/pages/tasks/TaskFormPage.tsx

@@ -19,6 +19,7 @@ import {
   useGetTaskQuery,
   useCreateTaskMutation,
   useUpdateTaskMutation,
+  useTestSubmissionMutation,
 } from '../../__data__/api/api'
 import { URLs } from '../../__data__/urls'
 import { LoadingSpinner } from '../../components/LoadingSpinner'
@@ -35,11 +36,15 @@ export const TaskFormPage: React.FC = () => {
   })
   const [createTask, { isLoading: isCreating }] = useCreateTaskMutation()
   const [updateTask, { isLoading: isUpdating }] = useUpdateTaskMutation()
+  const [testSubmission, { isLoading: isTesting }] = useTestSubmissionMutation()
 
   const [title, setTitle] = useState('')
   const [description, setDescription] = useState('')
   const [hiddenInstructions, setHiddenInstructions] = useState('')
   const [showDescPreview, setShowDescPreview] = useState(false)
+  const [testAnswer, setTestAnswer] = useState('')
+  const [testStatus, setTestStatus] = useState<string | null>(null)
+  const [testFeedback, setTestFeedback] = useState<string | null>(null)
 
   useEffect(() => {
     if (task) {
@@ -106,6 +111,58 @@ export const TaskFormPage: React.FC = () => {
     }
   }
 
+  const handleTestSubmit = async () => {
+    if (!task || !id) {
+      return
+    }
+
+    if (!testAnswer.trim()) {
+      toaster.create({
+        title: t('challenge.admin.common.validation.error'),
+        description: t('challenge.admin.tasks.test.validation.fill.answer'),
+        type: 'error',
+      })
+      return
+    }
+
+    setTestStatus(null)
+    setTestFeedback(null)
+
+    try {
+      const dummyUserId = task.creator?.sub || task.id
+
+      const result = await testSubmission({
+        userId: dummyUserId,
+        taskId: task.id,
+        result: testAnswer.trim(),
+        isTest: true,
+      }).unwrap()
+
+      setTestStatus(result.status)
+      setTestFeedback(result.feedback ?? null)
+
+      toaster.create({
+        title: t('challenge.admin.common.success'),
+        description: t('challenge.admin.tasks.test.success'),
+        type: 'success',
+      })
+    } catch (err: unknown) {
+      const isForbidden =
+        err &&
+        typeof err === 'object' &&
+        'status' in err &&
+        (err as { status?: number }).status === 403
+
+      toaster.create({
+        title: t('challenge.admin.common.error'),
+        description: isForbidden
+          ? t('challenge.admin.tasks.test.forbidden')
+          : t('challenge.admin.tasks.test.error'),
+        type: 'error',
+      })
+    }
+  }
+
   if (isEdit && isLoadingTask) {
     return <LoadingSpinner message={t('challenge.admin.tasks.loading')} />
   }
@@ -309,6 +366,57 @@ export const TaskFormPage: React.FC = () => {
             </Box>
           )}
 
+          {/* Test submission (LLM check) */}
+          {isEdit && task && (
+            <Box p={4} bg="teal.50" borderRadius="md" borderWidth="1px" borderColor="teal.200">
+              <Text fontWeight="bold" mb={2} color="teal.900">
+                {t('challenge.admin.tasks.test.title')}
+              </Text>
+              <Text fontSize="sm" mb={3} color="teal.800">
+                {t('challenge.admin.tasks.test.description')}
+              </Text>
+              <Field.Root>
+                <Field.Label>{t('challenge.admin.tasks.test.field.answer')}</Field.Label>
+                <Textarea
+                  value={testAnswer}
+                  onChange={(e) => setTestAnswer(e.target.value)}
+                  placeholder={t('challenge.admin.tasks.test.field.answer.placeholder')}
+                  rows={6}
+                  fontFamily="monospace"
+                  disabled={isTesting}
+                />
+                <Field.HelperText>
+                  {t('challenge.admin.tasks.test.field.answer.helper')}
+                </Field.HelperText>
+              </Field.Root>
+
+              <HStack mt={3} align="flex-start" justify="space-between" gap={4}>
+                <Button
+                  onClick={handleTestSubmit}
+                  colorPalette="teal"
+                  disabled={isTesting || !testAnswer.trim()}
+                >
+                  {t('challenge.admin.tasks.test.button.run')}
+                </Button>
+
+                {(testStatus || testFeedback) && (
+                  <Box flex="1" p={3} bg="white" borderRadius="md" borderWidth="1px" borderColor="teal.100">
+                    {testStatus && (
+                      <Text fontSize="sm" fontWeight="medium" mb={1}>
+                        {t(`challenge.admin.tasks.test.status.${testStatus}`)}
+                      </Text>
+                    )}
+                    {testFeedback && (
+                      <Text fontSize="sm" whiteSpace="pre-wrap">
+                        {testFeedback}
+                      </Text>
+                    )}
+                  </Box>
+                )}
+              </HStack>
+            </Box>
+          )}
+
           {/* Actions */}
           <HStack gap={3} justify="flex-end">
             <Button variant="outline" onClick={() => navigate(URLs.tasks)} disabled={isLoading}>