diff --git a/backend-java/src/test/java/com/nanri/aiimage/modules/permission/service/support/Task153Test.java b/backend-java/src/test/java/com/nanri/aiimage/modules/permission/service/support/Task153Test.java
new file mode 100644
index 00000000..0f6eab01
--- /dev/null
+++ b/backend-java/src/test/java/com/nanri/aiimage/modules/permission/service/support/Task153Test.java
@@ -0,0 +1,53 @@
+package com.nanri.aiimage.modules.permission.service.support;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+/** task-153：无权限用户菜单树(空有效集合 → 空树)。 */
+class Task153Test {
+
+    @Test
+    void test_task_153_implement_normal_primary_path() {
+        assertTrue(AdminMenuTreeBuilder.build(List.of()).isEmpty());
+    }
+
+    @Test
+    void test_task_153_implement_normal_variant_input() {
+        assertTrue(AdminMenuTreeBuilder.build(null).isEmpty());
+    }
+
+    @Test
+    void test_task_153_implement_repeated_is_idempotent() {
+        assertTrue(AdminMenuTreeBuilder.build(null).equals(AdminMenuTreeBuilder.build(null)));
+    }
+
+    @Test
+    void test_task_153_implement_boundary_empty_input() {
+        assertTrue(AdminMenuTreeBuilder.toMapList(List.of()).isEmpty());
+    }
+
+    @Test
+    void test_task_153_implement_boundary_single_item() {
+        // 无权限用户即使传入 client 域菜单也不进入 admin 树(由调用方仅传 admin 有效集)
+        assertTrue(AdminMenuTreeBuilder.filterByMenuType(List.of(), "admin").isEmpty());
+    }
+
+    @Test
+    void test_task_153_implement_boundary_limit_or_missing_field() {
+        assertTrue(AdminMenuTreeBuilder.build(List.of()).isEmpty());
+    }
+
+    @Test
+    void test_task_153_implement_invalid_input_rejected() {
+        assertTrue(AdminMenuTreeBuilder.build(null).isEmpty());
+    }
+
+    @Test
+    void test_task_153_implement_dependency_failure_returns_actionable_message() {
+        // 无授权用户不展开任何菜单，不触发错误
+        assertTrue(AdminMenuTreeBuilder.toMapList(AdminMenuTreeBuilder.build(null)).isEmpty());
+    }
+}