diff --git a/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/NamespaceBatchMemberControllerTest.java b/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/NamespaceBatchMemberControllerTest.java
index 8ac33168..8a8145af 100644
--- a/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/NamespaceBatchMemberControllerTest.java
+++ b/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/NamespaceBatchMemberControllerTest.java
@@ -17,6 +17,7 @@ import com.iflytek.skillhub.domain.user.UserAccount;
 import com.iflytek.skillhub.domain.user.UserAccountRepository;
 import com.iflytek.skillhub.service.NamespaceMemberCandidateService;
 import com.iflytek.skillhub.service.NamespacePortalCommandAppService;
+import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
@@ -31,6 +32,7 @@ import org.springframework.test.web.servlet.MockMvc;
 import org.springframework.test.web.servlet.request.RequestPostProcessor;
 
 import java.util.List;
+import java.util.Optional;
 import java.util.Set;
 
 import static org.mockito.ArgumentMatchers.any;
@@ -80,6 +82,11 @@ class NamespaceBatchMemberControllerTest {
     @MockBean
     private UserAccountRepository userAccountRepository;
 
+    @BeforeEach
+    void setUpNamespaceLookup() {
+        given(namespaceRepository.findIdBySlug("team-a")).willReturn(Optional.of(1L));
+    }
+
     @Test
     void batchAddMembers_partialSuccess_returnsResultsPerRow() throws Exception {
         Namespace namespace = namespace(1L, "team-a", NamespaceStatus.ACTIVE, NamespaceType.TEAM);
diff --git a/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/NamespacePortalControllerTest.java b/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/NamespacePortalControllerTest.java
index d7dc9142..ac60aad1 100644
--- a/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/NamespacePortalControllerTest.java
+++ b/server/skillhub-app/src/test/java/com/iflytek/skillhub/controller/NamespacePortalControllerTest.java
@@ -16,6 +16,7 @@ import com.iflytek.skillhub.domain.user.UserAccount;
 import com.iflytek.skillhub.domain.user.UserAccountRepository;
 import com.iflytek.skillhub.dto.NamespaceCandidateUserResponse;
 import com.iflytek.skillhub.service.NamespaceMemberCandidateService;
+import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
@@ -31,6 +32,7 @@ import org.springframework.test.web.servlet.request.RequestPostProcessor;
 
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.Set;
 
 import static org.mockito.ArgumentMatchers.any;
@@ -78,6 +80,11 @@ class NamespacePortalControllerTest {
     @MockBean
     private UserAccountRepository userAccountRepository;
 
+    @BeforeEach
+    void setUpNamespaceLookup() {
+        given(namespaceRepository.findIdBySlug("team-a")).willReturn(Optional.of(1L));
+    }
+
     @Test
     void listMyNamespaces_returnsFrozenAndArchivedNamespacesWithCurrentRole() throws Exception {
         Namespace namespace = namespace(1L, "team-a", NamespaceStatus.ARCHIVED, NamespaceType.TEAM);