General: Add server tests for interview endpoints

src/main/java/de/tum/cit/aet/application/repository/ApplicationRepository.java

@@ -222,4 +222,28 @@ WHERE a.job IN (
         """
     )
     List<Object[]> countApplicationsByJobAndStateForInterviewProcesses(@Param("professorId") UUID professorId);
+
+    /**
+     * Counts applications grouped by job and state for jobs with interview
+     * processes
+     * that are accessible to the user (professor or research group member).
+     *
+     * @param userId the ID of the user
+     * @return List of Object arrays containing [Job, ApplicationState, Count]
+     */
+    @Query(
+        """
+            SELECT a.job, a.state, COUNT(a)
+            FROM Application a
+            WHERE EXISTS (
+                SELECT 1 FROM InterviewProcess ip
+                JOIN ip.job j
+                JOIN j.researchGroup rg
+                JOIN rg.userRoles ur
+                WHERE ip.job = a.job AND ur.user.userId = :userId
+            )
+            GROUP BY a.job, a.state
+        """
+    )
+    List<Object[]> countApplicationsByJobAndStateForUserAccess(@Param("userId") UUID userId);
 }

src/main/java/de/tum/cit/aet/interview/repository/InterviewProcessRepository.java

@@ -26,6 +26,26 @@ public interface InterviewProcessRepository extends JpaRepository<InterviewProce
     )
     List<InterviewProcess> findAllByProfessorId(@Param("professorId") UUID professorId);
 
+    /**
+     * Find all InterviewProcesses for jobs where the user is a member of the
+     * research group.
+     * This covers both the supervising professor and other employees in the group.
+     *
+     * @param userId the ID of the user
+     * @return list of InterviewProcesses accessible to the user
+     */
+    @Query(
+        """
+        SELECT ip
+        FROM InterviewProcess ip
+        JOIN ip.job j
+        JOIN j.researchGroup rg
+        JOIN rg.userRoles ur
+        WHERE ur.user.userId = :userId
+        """
+    )
+    List<InterviewProcess> findAllByUserAccess(@Param("userId") UUID userId);
+
     /**
      * Finds an interview process by the associated job identifier.
      *

src/main/java/de/tum/cit/aet/interview/service/InterviewService.java

@@ -57,19 +57,19 @@ public class InterviewService {
      */
 
     public List<InterviewOverviewDTO> getInterviewOverview() {
-        // 1. Get the ID of the currently logged-in professor
-        UUID professorId = currentUserService.getUserId();
+        // 1. Get the ID of the currently logged-in user
+        UUID currentUserId = currentUserService.getUserId();
 
-        // 2. Load all active interview processes for this professor
-        List<InterviewProcess> interviewProcesses = interviewProcessRepository.findAllByProfessorId(professorId);
+        // 2. Load all active interview processes accessible to this user
+        List<InterviewProcess> interviewProcesses = interviewProcessRepository.findAllByUserAccess(currentUserId);
 
         // 2. If no interview processes exist, return an empty list
         if (interviewProcesses.isEmpty()) {
             return Collections.emptyList();
         }
 
         // 4. Fetch aggregated data: count of applications per job and ApplicationState
-        List<Object[]> countResults = applicationRepository.countApplicationsByJobAndStateForInterviewProcesses(professorId);
+        List<Object[]> countResults = applicationRepository.countApplicationsByJobAndStateForUserAccess(currentUserId);
 
         // 5.Build a map structure with jobId as key
         // The inner map contains the count of applications per ApplicationState
@@ -155,7 +155,7 @@ public InterviewOverviewDTO getInterviewProcessDetails(UUID processId) {
         // 3. Fetch aggregated data for this specific job
         UUID jobId = interviewProcess.getJob().getJobId();
         UUID currentUserId = currentUserService.getUserId();
-        List<Object[]> countResults = applicationRepository.countApplicationsByJobAndStateForInterviewProcesses(currentUserId);
+        List<Object[]> countResults = applicationRepository.countApplicationsByJobAndStateForUserAccess(currentUserId);
 
         // Filter for this specific job
         Map<ApplicationState, Long> stateCounts = new EnumMap<>(ApplicationState.class);