diff --git a/extensions/feishu/src/tool-account-routing.test.ts b/extensions/feishu/src/tool-account-routing.test.ts
index 2f332c626b9..272d2679c06 100644
--- a/extensions/feishu/src/tool-account-routing.test.ts
+++ b/extensions/feishu/src/tool-account-routing.test.ts
@@ -50,6 +50,16 @@ function createConfig(params: {
   } as OpenClawPluginApi["config"];
 }
 
+function clientAppIdAt(index: number): string | undefined {
+  const calls = createFeishuClientMock.mock.calls;
+  const resolvedIndex = index < 0 ? calls.length + index : index;
+  return calls[resolvedIndex]?.[0]?.appId;
+}
+
+function lastClientAppId(): string | undefined {
+  return clientAppIdAt(-1);
+}
+
 describe("feishu tool account routing", () => {
   beforeAll(async () => {
     ({ registerFeishuBitableTools, registerFeishuDriveTools, registerFeishuPermTools } =
@@ -83,7 +93,7 @@ describe("feishu tool account routing", () => {
     const tool = resolveTool("feishu_wiki", { agentAccountId: "b" });
     await tool.execute("call", { action: "search" });
 
-    expect(createFeishuClientMock.mock.calls.at(-1)?.[0]?.appId).toBe("app-b");
+    expect(lastClientAppId()).toBe("app-b");
   });
 
   test("wiki tool prefers the active contextual account over configured defaultAccount", async () => {
@@ -99,7 +109,7 @@ describe("feishu tool account routing", () => {
     const tool = resolveTool("feishu_wiki", { agentAccountId: "a" });
     await tool.execute("call", { action: "search" });
 
-    expect(createFeishuClientMock.mock.calls.at(-1)?.[0]?.appId).toBe("app-a");
+    expect(lastClientAppId()).toBe("app-a");
   });
 
   test("drive tool registers when first account disables it and routes to agentAccountId", async () => {
@@ -114,7 +124,7 @@ describe("feishu tool account routing", () => {
     const tool = resolveTool("feishu_drive", { agentAccountId: "b" });
     await tool.execute("call", { action: "unknown_action" });
 
-    expect(createFeishuClientMock.mock.calls.at(-1)?.[0]?.appId).toBe("app-b");
+    expect(lastClientAppId()).toBe("app-b");
   });
 
   test("perm tool registers when only second account enables it and routes to agentAccountId", async () => {
@@ -129,7 +139,7 @@ describe("feishu tool account routing", () => {
     const tool = resolveTool("feishu_perm", { agentAccountId: "b" });
     await tool.execute("call", { action: "unknown_action" });
 
-    expect(createFeishuClientMock.mock.calls.at(-1)?.[0]?.appId).toBe("app-b");
+    expect(lastClientAppId()).toBe("app-b");
   });
 
   test("bitable tool routes to agentAccountId and allows explicit accountId override", async () => {
@@ -140,8 +150,8 @@ describe("feishu tool account routing", () => {
     await tool.execute("call-ctx", { url: "invalid-url" });
     await tool.execute("call-override", { url: "invalid-url", accountId: "a" });
 
-    expect(createFeishuClientMock.mock.calls.at(0)?.[0]?.appId).toBe("app-b");
-    expect(createFeishuClientMock.mock.calls.at(1)?.[0]?.appId).toBe("app-a");
+    expect(clientAppIdAt(0)).toBe("app-b");
+    expect(clientAppIdAt(1)).toBe("app-a");
   });
 
   test("falls back to the configured Feishu default selection when agentAccountId is not a real account", async () => {
@@ -156,7 +166,7 @@ describe("feishu tool account routing", () => {
     const tool = resolveTool("feishu_wiki", { agentAccountId: "agent-spawner" });
     await tool.execute("call", { action: "search" });
 
-    expect(createFeishuClientMock.mock.calls.at(-1)?.[0]?.appId).toBe("app-a");
+    expect(lastClientAppId()).toBe("app-a");
   });
 
   test("does not silently fall back when the contextual account is real but uses non-env SecretRefs", async () => {