fix: 重构所有定时器测试为 Jest fake timers，彻底解决 CI Run tests 卡死

tests/utils.test.ts: debounce/throttle/sleep 使用 useFakeTimers + advanceTimersByTime; tests/core.test.ts: 历史栈防抖合并测试用 fake timers 替代 400ms setTimeout; tests/plugins.test.ts: autoSave 三个测试用 fake timers 替代 setTimeout/done; README.md: 更新测试徽章为 353 passed; site/index.html, site/demo.html: 更新测试数为 353

tests/utils.test.ts

@@ -61,27 +61,26 @@ describe('prefersDark', () => {
 });
 
 describe('debounce', () => {
-  test('延迟执行', (done) => {
+  beforeEach(() => jest.useFakeTimers());
+  afterEach(() => jest.useRealTimers());
+
+  test('延迟执行', () => {
     let called = 0;
     const fn = debounce(() => { called++; }, 50);
     fn();
     expect(called).toBe(0);
-    setTimeout(() => {
-      expect(called).toBe(1);
-      done();
-    }, 100);
+    jest.advanceTimersByTime(50);
+    expect(called).toBe(1);
   });
 
-  test('多次调用只执行最后一次', (done) => {
+  test('多次调用只执行最后一次', () => {
     let result = 0;
     const fn = debounce((v) => { result = v; }, 50);
     fn(1);
     fn(2);
     fn(3);
-    setTimeout(() => {
-      expect(result).toBe(3);
-      done();
-    }, 100);
+    jest.advanceTimersByTime(50);
+    expect(result).toBe(3);
   });
 
   test('immediate 模式立即执行', () => {
@@ -91,31 +90,30 @@ describe('debounce', () => {
     expect(called).toBe(1);
   });
 
-  test('保留 this 上下文', (done) => {
+  test('保留 this 上下文', () => {
     const obj = {
       val: 42,
       getVal: debounce(function () { return this.val; }, 30),
     };
     const p = obj.getVal();
     // immediate=false 时首次不返回，但 this 应正确
-    setTimeout(() => {
-      expect(typeof p).toBe('undefined'); // debounce 返回的是 undefined（异步执行）
-      done();
-    }, 60);
+    expect(typeof p).toBe('undefined');
+    jest.advanceTimersByTime(30);
   });
 
-  test('传递参数', (done) => {
+  test('传递参数', () => {
     let captured = null;
     const fn = debounce((a, b) => { captured = a + b; }, 30);
     fn(1, 2);
-    setTimeout(() => {
-      expect(captured).toBe(3);
-      done();
-    }, 60);
+    jest.advanceTimersByTime(30);
+    expect(captured).toBe(3);
   });
 });
 
 describe('throttle', () => {
+  beforeEach(() => jest.useFakeTimers());
+  afterEach(() => jest.useRealTimers());
+
   test('首次立即执行', () => {
     let called = 0;
     const fn = throttle(() => { called++; }, 50);
@@ -132,25 +130,22 @@ describe('throttle', () => {
     expect(called).toBe(1);
   });
 
-  test('限流期后可再次执行', (done) => {
+  test('限流期后可再次执行', () => {
     let called = 0;
     const fn = throttle(() => { called++; }, 40);
     fn();
-    setTimeout(() => {
-      fn();
-      expect(called).toBe(2);
-      done();
-    }, 60);
+    jest.advanceTimersByTime(40);
+    fn();
+    expect(called).toBe(2);
   });
 
-  test('保留 this 与参数', (done) => {
+  test('保留 this 与参数', () => {
     const obj = {
       n: 10,
       run: throttle(function (x) { this.result = this.n + x; }, 30),
     };
     obj.run(5);
     expect(obj.result).toBe(15);
-    done();
   });
 });
 
@@ -225,22 +220,28 @@ describe('formatFileSize', () => {
 });
 
 describe('sleep', () => {
+  beforeEach(() => jest.useFakeTimers());
+  afterEach(() => jest.useRealTimers());
+
   test('返回 Promise', () => {
     expect(sleep(10)).toBeInstanceOf(Promise);
   });
 
-  test('延迟后 resolve', (done) => {
-    const start = Date.now();
-    sleep(50).then(() => {
-      const elapsed = Date.now() - start;
-      expect(elapsed).toBeGreaterThanOrEqual(40);
-      done();
-    });
+  test('延迟后 resolve', async () => {
+    let resolved = false;
+    sleep(50).then(() => { resolved = true; });
+    expect(resolved).toBe(false);
+    jest.advanceTimersByTime(50);
+    // 让微任务队列执行
+    await Promise.resolve();
+    expect(resolved).toBe(true);
   });
 
   test('async/await 用法', async () => {
-    const start = Date.now();
-    await sleep(30);
-    expect(Date.now() - start).toBeGreaterThanOrEqual(20);
+    let resolved = false;
+    const p = sleep(30).then(() => { resolved = true; });
+    jest.advanceTimersByTime(30);
+    await p;
+    expect(resolved).toBe(true);
   });
 });