diff --git a/extensions/line/src/webhook-node.test.ts b/extensions/line/src/webhook-node.test.ts
index c260155e1045..bfacb98807f4 100644
--- a/extensions/line/src/webhook-node.test.ts
+++ b/extensions/line/src/webhook-node.test.ts
@@ -1,10 +1,10 @@
-// Line tests cover webhook node plugin behavior.
 import crypto from "node:crypto";
 import type { IncomingMessage, ServerResponse } from "node:http";
 import type { NextFunction, Request, Response } from "express";
 import type { RuntimeEnv } from "openclaw/plugin-sdk/runtime-env";
 import { createMockIncomingRequest } from "openclaw/plugin-sdk/test-env";
 import { afterAll, describe, expect, it, vi } from "vitest";
+import { createRuntimeSpies } from "../../test-support/runtime-spies.js";
 
 const runDetachedWebhookWorkSpy = vi.hoisted(() => vi.fn());
 vi.mock("openclaw/plugin-sdk/webhook-request-guards", async () => {
@@ -71,20 +71,6 @@ function firstParsedPayload(
   return firstMockCall(mock, label)[0] as ParsedLineWebhookPayload;
 }
 
-type RuntimeEnvMock = RuntimeEnv & {
-  error: ReturnType<typeof vi.fn<(...args: unknown[]) => void>>;
-  exit: ReturnType<typeof vi.fn<(code: number) => void>>;
-  log: ReturnType<typeof vi.fn<(...args: unknown[]) => void>>;
-};
-
-function createRuntimeMock(): RuntimeEnvMock {
-  return {
-    error: vi.fn<(...args: unknown[]) => void>(),
-    exit: vi.fn<(code: number) => void>(),
-    log: vi.fn<(...args: unknown[]) => void>(),
-  };
-}
-
 function createMiddlewareRes() {
   const status = vi.fn<Response["status"]>();
   const json = vi.fn<Response["json"]>();
@@ -106,7 +92,7 @@ function createMiddlewareRequest(
 
 function createPostWebhookTestHarness(rawBody: string, secret = "secret") {
   const bot = { handleWebhook: vi.fn(async () => "durable" as const) };
-  const runtime = createRuntimeMock();
+  const runtime = createRuntimeSpies();
   const handler = createLineNodeWebhookHandler({
     channelSecret: secret,
     bot,
@@ -200,7 +186,7 @@ async function invokeNodePostContract(params: {
     }
     return "durable" as const;
   });
-  const runtime = createRuntimeMock();
+  const runtime = createRuntimeSpies();
   const handler = createLineNodeWebhookHandler({
     channelSecret: SECRET,
     bot: { handleWebhook: dispatched },
@@ -229,7 +215,7 @@ async function invokeMiddlewarePostContract(params: {
   rawBody: string;
   signed: boolean;
 }) {
-  const runtime = createRuntimeMock();
+  const runtime = createRuntimeSpies();
   const onEvents = vi.fn(async () => {
     if (params.failWith) {
       // oxlint-disable-next-line typescript/only-throw-error -- Webhook boundaries must report non-Error throws from downstream dispatchers.
@@ -371,7 +357,7 @@ describe("LINE webhook shared POST contract", () => {
 describe("createLineNodeWebhookHandler", () => {
   it("returns 200 for GET", async () => {
     const bot = { handleWebhook: vi.fn(async () => "durable" as const) };
-    const runtime = createRuntimeMock();
+    const runtime = createRuntimeSpies();
     const handler = createLineNodeWebhookHandler({
       channelSecret: "secret",
       bot,
@@ -388,7 +374,7 @@ describe("createLineNodeWebhookHandler", () => {
 
   it("returns 204 for HEAD", async () => {
     const bot = { handleWebhook: vi.fn(async () => "durable" as const) };
-    const runtime = createRuntimeMock();
+    const runtime = createRuntimeSpies();
     const handler = createLineNodeWebhookHandler({
       channelSecret: "secret",
       bot,
@@ -416,7 +402,7 @@ describe("createLineNodeWebhookHandler", () => {
 
   it("rejects unsigned POST requests before reading the body", async () => {
     const bot = { handleWebhook: vi.fn(async () => "durable" as const) };
-    const runtime = createRuntimeMock();
+    const runtime = createRuntimeSpies();
     const readBody = vi.fn(async () => JSON.stringify({ events: [{ type: "message" }] }));
     const handler = createLineNodeWebhookHandler({
       channelSecret: "secret",
@@ -436,7 +422,7 @@ describe("createLineNodeWebhookHandler", () => {
   it("uses strict pre-auth limits for signed POST requests", async () => {
     const rawBody = JSON.stringify({ events: [{ type: "message" }] });
     const bot = { handleWebhook: vi.fn(async () => "durable" as const) };
-    const runtime = createRuntimeMock();
+    const runtime = createRuntimeSpies();
     const readBody = vi.fn(async (_req: IncomingMessage, maxBytes: number, timeoutMs?: number) => {
       expect(maxBytes).toBe(64 * 1024);
       expect(timeoutMs).toBe(5_000);
@@ -498,7 +484,7 @@ describe("createLineNodeWebhookHandler", () => {
       ),
     };
     const onRequestAuthenticated = vi.fn();
-    const runtime = createRuntimeMock();
+    const runtime = createRuntimeSpies();
     const handler = createLineNodeWebhookHandler({
       channelSecret: SECRET,
       bot,