diff --git a/src/main/java/com/powsybl/caseserver/CaseService.java b/src/main/java/com/powsybl/caseserver/CaseService.java
index aa7f9c6..1aa4474 100644
--- a/src/main/java/com/powsybl/caseserver/CaseService.java
+++ b/src/main/java/com/powsybl/caseserver/CaseService.java
@@ -262,6 +262,9 @@ public Set<UUID> getCaseToReindex() {
                 .map(CaseMetadataEntity::getId)
                 .collect(Collectors.toSet());
     }
+    public List<CaseInfos> getAllCases() {
+        return getCases(getStorageRootDir());
+    }
 
     CaseInfos createInfos(String fileBaseName, UUID caseUuid, String format) {
         FileNameParser parser = FileNameParsers.findParser(fileBaseName);
diff --git a/src/main/java/com/powsybl/caseserver/services/SupervisionService.java b/src/main/java/com/powsybl/caseserver/services/SupervisionService.java
index 1a334af..94dbf17 100644
--- a/src/main/java/com/powsybl/caseserver/services/SupervisionService.java
+++ b/src/main/java/com/powsybl/caseserver/services/SupervisionService.java
@@ -38,7 +38,7 @@ public SupervisionService(CaseInfosService caseInfosService, CaseService caseSer
     }
 
     public void reindexAllCases() {
-        List<CaseInfos> allCases = caseService.getCases(caseService.getStorageRootDir());
+        List<CaseInfos> allCases = caseService.getAllCases();
         Set<UUID> casesToIndex = caseService.getCaseToReindex();
         List<CaseInfos> data = allCases.stream().filter(c -> casesToIndex.contains(c.getUuid())).toList();
         caseInfosService.recreateAllCaseInfos(data);
@@ -48,13 +48,13 @@ public long deleteIndexedDirectoryElements() {
         AtomicReference<Long> startTime = new AtomicReference<>();
         startTime.set(System.nanoTime());
 
-        long nbIndexesToDelete = getIndexedDirectoryElementsCount();
+        long nbIndexesToDelete = getIndexedCaseElementsCount();
         caseInfosRepository.deleteAll();
         LOGGER.trace("Indexed directory elements deletion : {} seconds", TimeUnit.NANOSECONDS.toSeconds(System.nanoTime() - startTime.get()));
         return nbIndexesToDelete;
     }
 
-    private long getIndexedDirectoryElementsCount() {
+    public long getIndexedCaseElementsCount() {
         return caseInfosRepository.count();
     }
 }
diff --git a/src/test/java/com/powsybl/caseserver/SupervisionTest.java b/src/test/java/com/powsybl/caseserver/SupervisionTest.java
new file mode 100644
index 0000000..f73d3dd
--- /dev/null
+++ b/src/test/java/com/powsybl/caseserver/SupervisionTest.java
@@ -0,0 +1,58 @@
+/**
+ * Copyright (c) 2024, RTE (http://www.rte-france.com)
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+package com.powsybl.caseserver;
+
+import com.powsybl.caseserver.elasticsearch.CaseInfosRepository;
+import com.powsybl.caseserver.repository.CaseMetadataRepository;
+import com.powsybl.caseserver.services.SupervisionService;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.servlet.MockMvc;
+
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+
+/**
+ * @author Jamal KHEYYAD <jamal.kheyyad at rte-international.com>
+ */
+@RunWith(SpringRunner.class)
+@AutoConfigureMockMvc
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.MOCK, properties = {"case-store-directory=/cases"})
+@ContextConfigurationWithTestChannel
+public class SupervisionTest {
+    @Autowired
+    SupervisionService supervisionService;
+    @Autowired
+    CaseInfosRepository caseInfosRepository;
+    @Autowired
+    CaseMetadataRepository caseMetadataRepository;
+    @Autowired
+    CaseService caseService;
+
+    @Autowired
+    private MockMvc mvc;
+
+    @Test
+    public void testGetElementInfosCount() {
+        supervisionService.getIndexedCaseElementsCount();
+        verify(caseInfosRepository, times(1)).count();
+    }
+
+    @Test
+    public void testDeleteElementInfos() {
+        supervisionService.deleteIndexedDirectoryElements();
+
+        verify(caseInfosRepository, times(1)).count();
+        verify(caseInfosRepository, times(1)).deleteAll();
+    }
+
+
+}