diff --git a/web.py b/web.py
new file mode 100644
index 0000000..1666a29
--- /dev/null
+++ b/web.py
@@ -0,0 +1,66 @@
+import unittest
+from unittest.mock import patch, MagicMock
+import web  # 假设你的Flask app文件命名为web.py
+
+
+class StartCallTestCase(unittest.TestCase):
+
+    def setUp(self):
+        self.app = app.test_client()
+        self.app.testing = True
+
+    @patch('web.pymysql.connect')  # 模拟数据库连接
+    def test_start_call_rendering(self, mock_connect):
+        # 模拟数据库返回的数据
+        mock_cursor = MagicMock()
+        mock_cursor.fetchall.return_value = [
+            {'id': 1, 'name': 'Alice', 'points': 10.0},
+            {'id': 2, 'name': 'Bob', 'points': 5.0},
+            {'id': 3, 'name': 'Charlie', 'points': 2.0}
+        ]
+        mock_connect.return_value.cursor.return_value = mock_cursor
+
+        # 发送GET请求到/start_call
+        response = self.app.get('/start_call')
+
+        # 验证响应状态
+        self.assertEqual(response.status_code, 200)
+
+        # 验证是否渲染了正确的内容
+        response_text = response.get_data(as_text=True)
+        self.assertIn('pstuents', response_text)  # 检查渲染内容
+
+    @patch('web.pymysql.connect')  # 模拟数据库连接
+    def test_weighted_random_selection(self, mock_connect):
+        # 模拟数据库返回的数据
+        mock_cursor = MagicMock()
+        mock_cursor.fetchall.return_value = [
+            {'id': 1, 'name': 'Alice', 'points': 10.0},  # Alice的权重最低
+            {'id': 2, 'name': 'Bob', 'points': 5.0},  # Bob的权重次之
+            {'id': 3, 'name': 'Charlie', 'points': 2.0}  # Charlie的权重最高
+        ]
+        mock_connect.return_value.cursor.return_value = mock_cursor
+
+        # 存储选择结果的字典
+        selection_count = {'Alice': 0, 'Bob': 0, 'Charlie': 0}
+
+        # 进行多次调用来验证随机性
+        for _ in range(100):
+            response = self.app.get('/start_call')
+            response_text = response.get_data(as_text=True)
+
+            # 统计每个学生的选择次数
+            if 'Alice' in response_text:
+                selection_count['Alice'] += 1
+            elif 'Bob' in response_text:
+                selection_count['Bob'] += 1
+            elif 'Charlie' in response_text:
+                selection_count['Charlie'] += 1
+
+        # 验证选择的相对概率
+        self.assertTrue(selection_count['Charlie'] > selection_count['Bob'])
+        self.assertTrue(selection_count['Bob'] > selection_count['Alice'])
+
+
+if __name__ == '__main__':
+    unittest.main()