diff --git a/test_search_bilibili.py b/test_search_bilibili.py
new file mode 100644
index 0000000..71dfbf7
--- /dev/null
+++ b/test_search_bilibili.py
@@ -0,0 +1,121 @@
+import unittest
+from unittest.mock import patch, Mock
+import requests
+import json
+from bilibili_search import search_bilibili, get_video_cid, fetch_danmu, count_and_rank_danmu,fetch_bilibili_videos
+class TestBilibiliFunctions(unittest.TestCase):
+
+    @patch('bilibili_search.requests.get')
+    #测试 search_bilibili 函数在成功情况下的行为
+    def test_search_bilibili_success(self, mock_get):
+        mock_response = Mock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {'code': 0, 'data': {'result': [{'bvid': 'BV1'}]}}
+        mock_get.return_value = mock_response
+        result = search_bilibili('test', 1)
+        self.assertEqual(result, ['BV1'])
+
+    @patch('bilibili_search.requests.get')
+    #测试 search_bilibili 函数在 JSON 解码错误情况下的行为
+    def test_search_bilibili_json_error(self, mock_get):
+        mock_response = Mock()
+        mock_response.status_code = 200
+        mock_response.json.side_effect = json.JSONDecodeError('error', '', 0)
+        mock_get.return_value = mock_response
+        result = search_bilibili('test', 1)
+        self.assertEqual(result, [])
+
+    @patch('bilibili_search.requests.get')
+    #测试 get_video_cid 函数在成功情况下的行为
+    def test_get_video_cid_success(self, mock_get):
+        mock_response = Mock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {'data': {'cid': 123}}
+        mock_get.return_value = mock_response
+        result = get_video_cid('BV1')
+        self.assertEqual(result, 123)
+
+    @patch('bilibili_search.requests.get')
+    #测试 get_video_cid 函数在请求失败的情况下的行为
+    def test_get_video_cid_failure(self, mock_get):
+        mock_response = Mock()
+        mock_response.status_code = 404
+        mock_get.return_value = mock_response
+        result = get_video_cid('BV1')
+        self.assertIsNone(result)
+
+    @patch('bilibili_search.requests.get')
+    #测试 fetch_danmu 函数在成功情况下的行为
+    def test_fetch_danmu_success(self, mock_get):
+        mock_response = Mock()
+        mock_response.status_code = 200
+        mock_response.content = b'<d>test danmu</d>'
+        mock_get.return_value = mock_response
+        result = fetch_danmu(123)
+        self.assertEqual(result, ['test danmu'])
+
+    @patch('bilibili_search.requests.get')
+    #测试 fetch_danmu 函数在成功情况下的行为
+    def test_fetch_danmu_http_error(self, mock_get):
+        mock_response = Mock()
+        mock_response.status_code = 500
+        mock_get.return_value = mock_response
+        result = fetch_danmu(123)
+        self.assertEqual(result, [])
+
+
+    @patch('bilibili_search.requests.get')
+    def test_search_bilibili_no_results(self, mock_get):
+        # 模拟没有搜索结果的API响应
+        mock_response = Mock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {
+            'code': 0,
+            'data': {
+                'result': []
+            }
+        }
+        mock_get.return_value = mock_response
+
+        result = search_bilibili('不存在的查询词', 5)
+        self.assertEqual(result, [])
+
+
+    @patch('bilibili_search.requests.get')
+    def test_search_bilibili_page_limit(self, mock_get):
+        # 模拟分页
+        mock_response = Mock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {
+            'code': 0,
+            'data': {
+                'result': [{'bvid': f'BV1J54y1D7E{page}'} for page in range(42)]
+            }
+        }
+        mock_get.return_value = mock_response
+
+        result = search_bilibili('2024巴黎奥运会', 100)
+        self.assertEqual(len(result), 100)
+
+    @patch('bilibili_search.requests.get')
+    def test_fetch_no_videos(self):
+#        # 模拟返回空的视频列表
+        mock_response = {'code': 0, 'data': {'result': []}}
+        with patch('bilibili_search.requests.get', return_value=Mock(status_code=200, json=lambda: mock_response)):
+            video_list = fetch_bilibili_videos('2024 Paris Olympics', 1)
+            self.assertEqual(video_list, [])
+
+
+
+    @patch('bilibili_search.export_to_excel')
+    def test_count_and_rank_danmu(self, mock_export):
+        # 测试弹幕统计和排名
+        danmu_texts = ['人工智能', '机器学习', '人工智能', '人工智能']
+        count_and_rank_danmu(danmu_texts)
+
+        # 检查是否调用了导出到Excel的函数
+        mock_export.assert_called_once()
+
+
+if __name__ == '__main__':
+    unittest.main()