diff --git a/extensions/matrix/src/matrix/client/file-sync-store.test.ts b/extensions/matrix/src/matrix/client/file-sync-store.test.ts
index 9247c074983..dd1d02fa0dc 100644
--- a/extensions/matrix/src/matrix/client/file-sync-store.test.ts
+++ b/extensions/matrix/src/matrix/client/file-sync-store.test.ts
@@ -2,8 +2,8 @@ import fs from "node:fs";
 import os from "node:os";
 import path from "node:path";
 import type { ISyncResponse } from "matrix-js-sdk";
-import * as jsonFiles from "openclaw/plugin-sdk/infra-runtime";
 import { afterEach, describe, expect, it, vi } from "vitest";
+import * as runtimeApi from "../../runtime-api.js";
 import { FileBackedMatrixSyncStore } from "./file-sync-store.js";
 
 function createSyncResponse(nextBatch: string): ISyncResponse {
@@ -142,7 +142,7 @@ describe("FileBackedMatrixSyncStore", () => {
   it("coalesces background persistence until the debounce window elapses", async () => {
     vi.useFakeTimers();
     const storagePath = createStoragePath();
-    const writeSpy = vi.spyOn(jsonFiles, "writeJsonAtomic").mockResolvedValue();
+    const writeSpy = vi.spyOn(runtimeApi, "writeJsonFileAtomically").mockResolvedValue();
 
     const store = new FileBackedMatrixSyncStore(storagePath);
     await store.setSyncData(createSyncResponse("s111"));
@@ -155,6 +155,7 @@ describe("FileBackedMatrixSyncStore", () => {
     expect(writeSpy).not.toHaveBeenCalled();
 
     await vi.advanceTimersByTimeAsync(1);
+    await Promise.resolve();
     expect(writeSpy).toHaveBeenCalledTimes(1);
     expect(writeSpy).toHaveBeenCalledWith(
       storagePath,
@@ -166,8 +167,9 @@ describe("FileBackedMatrixSyncStore", () => {
           lazyLoadMembers: true,
         },
       }),
-      expect.any(Object),
     );
+
+    await store.flush();
   });
 
   it("waits for an in-flight persist when shutdown flush runs", async () => {
@@ -175,7 +177,7 @@ describe("FileBackedMatrixSyncStore", () => {
     const storagePath = createStoragePath();
     const writeDeferred = createDeferred();
     const writeSpy = vi
-      .spyOn(jsonFiles, "writeJsonAtomic")
+      .spyOn(runtimeApi, "writeJsonFileAtomically")
       .mockImplementation(async () => writeDeferred.promise);
 
     const store = new FileBackedMatrixSyncStore(storagePath);