diff --git a/src/utils/after1000ms.ts b/src/utils/after1000ms.ts
new file mode 100644
index 0000000..53e8c5f
--- /dev/null
+++ b/src/utils/after1000ms.ts
@@ -0,0 +1,11 @@
+type AnyFunction = (...args: any[]) => any;
+
+const after1000ms = (callback: AnyFunction) => {
+  console.log("准备计时");
+  setTimeout(() => {
+    console.log("午时已到");
+    callback && callback();
+  }, 1000);
+};
+
+export default after1000ms;
diff --git a/tests/jest-setup.ts b/tests/jest-setup.ts
index 801bd48..752b680 100644
--- a/tests/jest-setup.ts
+++ b/tests/jest-setup.ts
@@ -13,3 +13,8 @@ afterEach(() => {
 afterAll(() => {
   server.close();
 });
+
+// Mock console.xxx
+jest.spyOn(console, "log").mockImplementation();
+jest.spyOn(console, "warn").mockImplementation();
+jest.spyOn(console, "error").mockImplementation();
diff --git a/tests/utils/after1000ms.test.ts b/tests/utils/after1000ms.test.ts
new file mode 100644
index 0000000..90fa27d
--- /dev/null
+++ b/tests/utils/after1000ms.test.ts
@@ -0,0 +1,20 @@
+import after1000ms from "utils/after1000ms";
+
+describe("after1000ms", () => {
+  beforeAll(() => {
+    jest.useFakeTimers();
+  });
+
+  it("可以在 1000ms 后自动执行函数", () => {
+    jest.spyOn(global, "setTimeout");
+    const callback = jest.fn();
+
+    after1000ms(callback);
+
+    jest.runAllTimers();
+
+    expect(callback).toHaveBeenCalled();
+    expect(setTimeout).toHaveBeenCalledTimes(1);
+    expect(setTimeout).toHaveBeenCalledWith(expect.any(Function), 1000);
+  });
+});