diff --git a/entry/src/test/Bridge.test.ets b/entry/src/test/Bridge.test.ets
new file mode 100644
index 0000000..525a705
--- /dev/null
+++ b/entry/src/test/Bridge.test.ets
@@ -0,0 +1,148 @@
+import { describe, it, expect } from '@ohos/hypium';
+import {
+  BridgeController, FakeWebController, MessageCodec, Message, HandlerRegistry
+} from 'feature_bridge';
+
+/**
+ * 桥引擎单测（T-M1-08）。纯逻辑，用 FakeWebController 模拟 H5 收发，不依赖设备。
+ * 覆盖 MessageCodec（toJson/escape/toArray）、HandlerRegistry（兜底）、
+ * BridgeController（入站分发/出站下发/回执路由/启动队列/默认兜底）。
+ */
+export default function bridgeTest() {
+  describe('MessageCodec', () => {
+    it('toJson_omits_undefined', 0, () => {
+      const m = new Message();
+      m.handlerName = 'h';
+      m.data = 'd';
+      const json = MessageCodec.toJson(m);
+      expect(json.includes('"handlerName":"h"')).assertTrue();
+      expect(json.includes('"data":"d"')).assertTrue();
+      expect(json.includes('callbackId')).assertFalse();
+      expect(json.includes('responseId')).assertFalse();
+    });
+
+    it('toJson_response', 0, () => {
+      const json = MessageCodec.toJson(Message.response('cb1', 'ok'));
+      expect(json.includes('"responseId":"cb1"')).assertTrue();
+      expect(json.includes('"responseData":"ok"')).assertTrue();
+    });
+
+    it('escape_plain_unchanged', 0, () => {
+      // 无双引号/反斜杠的纯文本不应被第一步改变（仅可能被第二步处理引号，这里无引号）
+      const s = MessageCodec.escape('1782349257911');
+      expect(s).assertEqual('1782349257911');
+    });
+
+    it('escape_quotes_backslash', 0, () => {
+      // JSON {"data":"a\"b"} → 结构引号转义、内部 \" 加倍
+      const mm = new Message();
+      mm.data = 'a"b';
+      const escaped = MessageCodec.escape(MessageCodec.toJson(mm));
+      // 结构引号被转义为 \"（前面非反斜杠）
+      expect(escaped.includes('\\"data\\"')).assertTrue();
+    });
+
+    it('toArray_parses_queue', 0, () => {
+      const list = MessageCodec.toArray('[{"handlerName":"echo","data":"hi","callbackId":"cb1"}]');
+      expect(list.length).assertEqual(1);
+      expect(list[0].handlerName).assertEqual('echo');
+      expect(list[0].data).assertEqual('hi');
+      expect(list[0].callbackId).assertEqual('cb1');
+    });
+  });
+
+  describe('HandlerRegistry', () => {
+    it('put_get_has', 0, () => {
+      const r = new HandlerRegistry();
+      r.put('a', (_d, cb) => cb('A'));
+      expect(r.has('a')).assertTrue();
+      expect(r.has('b')).assertFalse();
+      expect(r.size()).assertEqual(1);
+    });
+
+    it('default_handler_no_throw', 0, () => {
+      const r = new HandlerRegistry();
+      let resp = 'none';
+      // 默认兜底：未注册名不抛错，回空串
+      r.default()('x', (d) => { resp = d; });
+      expect(resp).assertEqual('');
+    });
+  });
+
+  describe('BridgeController', () => {
+    it('inbound_dispatch_and_callback', 0, () => {
+      const fake = new FakeWebController();
+      const bridge = new BridgeController(fake);
+      let got = '';
+      bridge.registerHandler('echo', (data, cb) => { got = data; cb('R:' + data); });
+      bridge.onPageEnd(); // 清空启动队列，进入直发模式
+
+      // 模拟 H5 触发取队列
+      const intercepted = bridge.onLoadIntercept('yy://__QUEUE__/');
+      expect(intercepted).assertTrue();
+      // FakeWebController 应收到 _fetchQueue 触发脚本
+      expect(fake.scripts.some((s) => s.includes('_fetchQueue'))).assertTrue();
+
+      // 模拟 H5 交回队列：一条 echo 调用
+      fake.clear();
+      bridge.onLoadIntercept('yy://return/_fetchQueue/' +
+        encodeURIComponent('[{"handlerName":"echo","data":"hi","callbackId":"cb1"}]'));
+      expect(got).assertEqual('hi');
+      // 回执经 dispatch 下发，脚本含 _handleMessageFromNative 与 responseId cb1
+      const last = fake.lastScript() ?? '';
+      expect(last.includes('_handleMessageFromNative')).assertTrue();
+      expect(last.includes('cb1')).assertTrue();
+    });
+
+    it('outbound_callHandler', 0, () => {
+      const fake = new FakeWebController();
+      const bridge = new BridgeController(fake);
+      bridge.onPageEnd();
+      bridge.callHandler('getlocationinfo', '{"city":"x"}');
+      const last = fake.lastScript() ?? '';
+      expect(last.includes('_handleMessageFromNative')).assertTrue();
+      expect(last.includes('getlocationinfo')).assertTrue();
+    });
+
+    it('startup_queue_flush_after_onPageEnd', 0, () => {
+      const fake = new FakeWebController();
+      const bridge = new BridgeController(fake);
+      // onPageEnd 之前 callHandler → 入启动队列，暂不下发
+      bridge.callHandler('appservice', '1');
+      expect(fake.scripts.length).assertEqual(0);
+      // onPageEnd → 补发
+      bridge.onPageEnd();
+      expect(fake.scripts.some((s) => s.includes('appservice'))).assertTrue();
+    });
+
+    it('response_route_by_responseId', 0, () => {
+      const fake = new FakeWebController();
+      const bridge = new BridgeController(fake);
+      bridge.onPageEnd();
+      let resp = '';
+      // 原生 callHandler 带回调 → 生成 callbackId
+      bridge.callHandler('getTime', '', (r) => { resp = r; });
+      // H5 回执：responseId 对应刚才的 callbackId（从下发脚本里取）
+      const sent = fake.lastScript() ?? '';
+      // 提取 callbackId（JAVA_CB_...）
+      const m = sent.match(/JAVA_CB_[0-9]+_[0-9]+/);
+      expect(m !== null).assertTrue();
+      const cbId = m![0];
+      bridge.onLoadIntercept('yy://return/_fetchQueue/' +
+        encodeURIComponent('[{"responseId":"' + cbId + '","responseData":"1700"}]'));
+      expect(resp).assertEqual('1700');
+    });
+
+    it('default_handler_unregistered_no_throw', 0, () => {
+      const fake = new FakeWebController();
+      const bridge = new BridgeController(fake);
+      bridge.onPageEnd();
+      // 未注册的 handler 名 → 默认兜底，不抛错
+      bridge.onLoadIntercept('yy://return/_fetchQueue/' +
+        encodeURIComponent('[{"handlerName":"finsh","data":"","callbackId":"cb9"}]'));
+      // 兜底回空串回执
+      const last = fake.lastScript() ?? '';
+      expect(last.includes('cb9')).assertTrue();
+    });
+  });
+}
diff --git a/entry/src/test/List.test.ets b/entry/src/test/List.test.ets
index bb5b5c3..f58041f 100644
--- a/entry/src/test/List.test.ets
+++ b/entry/src/test/List.test.ets
@@ -1,5 +1,7 @@
 import localUnitTest from './LocalUnit.test';
+import bridgeTest from './Bridge.test';
 
 export default function testsuite() {
   localUnitTest();
-}
\ No newline at end of file
+  bridgeTest();
+}