diff --git a/packages/core/test/src/server/mock-server.ts b/packages/core/test/src/server/mock-server.ts
index 3d1c030bd0..3e2e75070f 100644
--- a/packages/core/test/src/server/mock-server.ts
+++ b/packages/core/test/src/server/mock-server.ts
@@ -111,9 +111,10 @@ export class MockServer extends Application {
     await AppSupervisor.getInstance().destroy();
   }
 
-  agent(): ExtendedAgent {
-    const agent = supertest.agent(this.callback());
+  agent(callback?): ExtendedAgent {
+    const agent = supertest.agent(callback || this.callback());
     const prefix = this.resourcer.options.prefix;
+
     const proxy = new Proxy(agent, {
       get(target, method: string, receiver) {
         if (['login', 'loginUsingId'].includes(method)) {
diff --git a/packages/plugins/@nocobase/plugin-multi-app-manager/src/server/__tests__/mock-server.test.ts b/packages/plugins/@nocobase/plugin-multi-app-manager/src/server/__tests__/mock-server.test.ts
new file mode 100644
index 0000000000..46b8e9bc9c
--- /dev/null
+++ b/packages/plugins/@nocobase/plugin-multi-app-manager/src/server/__tests__/mock-server.test.ts
@@ -0,0 +1,49 @@
+/**
+ * This file is part of the NocoBase (R) project.
+ * Copyright (c) 2020-2024 NocoBase Co., Ltd.
+ * Authors: NocoBase Team.
+ *
+ * This project is dual-licensed under AGPL-3.0 and NocoBase Commercial License.
+ * For more information, please refer to: https://www.nocobase.com/agreement.
+ */
+
+import { createMockServer, MockServer } from '@nocobase/test';
+import { AppSupervisor } from '@nocobase/server';
+
+describe('sub app', async () => {
+  let app: MockServer;
+  let agent: any;
+
+  beforeEach(async () => {
+    app = await createMockServer({
+      plugins: ['multi-app-manager', 'client', 'ui-schema-storage', 'system-settings'],
+    });
+    await app.db.getRepository('applications').create({
+      values: {
+        name: 'test_sub',
+        options: {
+          plugins: ['client', 'ui-schema-storage', 'system-settings'],
+        },
+      },
+      context: {
+        waitSubAppInstall: true,
+      },
+    });
+
+    agent = app.agent();
+  });
+
+  afterEach(async () => {
+    await app.destroy();
+  });
+
+  test('sub agent', async () => {
+    const res = await agent.get('/app:getInfo');
+    expect(res.body.data.name).toBe('main');
+
+    const subApp = await AppSupervisor.getInstance().getApp('test_sub');
+
+    const res1 = await app.agent(subApp.callback()).get('/api/app:getInfo');
+    expect(res1.body.data.name).toBe('test_sub');
+  });
+});