diff --git a/test_comment_analysis.py b/test_comment_analysis.py
new file mode 100644
index 0000000..a025b9b
--- /dev/null
+++ b/test_comment_analysis.py
@@ -0,0 +1,94 @@
+import unittest
+from unittest.mock import mock_open, patch
+from collections import Counter, defaultdict
+import pandas as pd
+from bullet_comment_analysis import read_comments, count_comments, process_data, process_matched_comments
+
+class TestCommentProcessing(unittest.TestCase):   
+    """
+    测试 bullet_comment_analysis 模块中的函数。
+    """
+
+    @patch('builtins.open', new_callable=mock_open, read_data='弹幕1\n弹幕2\n弹幕3\n')
+    def test_read_comments(self, mock_file):            
+        """
+        测试 read_comments 函数
+        """ 
+        result = read_comments('dummy_file.txt')
+        self.assertEqual(result, ['弹幕1', '弹幕2', '弹幕3'])
+        # 验证文件是否以正确的模式打开
+        mock_file.assert_called_once_with('dummy_file.txt', 'r', encoding='utf-8')
+
+    def test_count_comments(self):
+        """
+        测试 count_comments 函数
+        """
+        comments = [
+            "我喜欢AI",
+            "人工智能很厉害",
+            "AI和智能设备",
+            "GPT 很棒",
+            "数据分析很重要",
+            "AI技术无处不在",
+            "这是合成的视频",
+        ]
+        keywords = ['AI', '人工智能', '智能', 'GPT', '计算', '数据分析', '识别', 'gtp', '合成', '监测']
+
+        expected_count = Counter({'ai': 3, '人工智能': 1, '智能': 2, 'gpt': 1, '数据分析': 1, '合成': 1})
+        expected_matched_comments = defaultdict(list, {
+            'ai': ["我喜欢AI", "AI和智能设备", "AI技术无处不在"],
+            '人工智能': ["人工智能很厉害"],
+            '智能': ["AI和智能设备", "人工智能很厉害"],
+            'gpt': ["GPT 很棒"],
+            '数据分析': ["数据分析很重要"],
+            '合成': ["这是合成的视频"]
+        })
+
+        count, matched_comments = count_comments(comments, keywords)
+
+        # 检查计数是否正确
+        self.assertEqual(count, expected_count)
+
+        # 检查结果是否符合预期
+        for keyword in expected_matched_comments:
+            self.assertCountEqual(matched_comments[keyword], expected_matched_comments[keyword])
+
+    def test_process_data(self):
+        """
+        测试 process_data 函数
+        """
+        count = Counter({'ai': 10, '人工智能': 5, '智能': 7, 'GPT': 3, '数据分析': 4, '识别': 1})
+        df = process_data(count)
+
+        expected_df = pd.DataFrame([
+            {'弹幕': 'ai', '数量': 10},
+            {'弹幕': '智能', '数量': 7},
+            {'弹幕': '人工智能', '数量': 5},
+            {'弹幕': '数据分析', '数量': 4},
+            {'弹幕': 'GPT', '数量': 3},
+            {'弹幕': '识别', '数量': 1}
+        ]).sort_values(by='数量', ascending=False).head(8).reset_index(drop=True)
+
+        pd.testing.assert_frame_equal(df.reset_index(drop=True), expected_df)
+
+    def test_process_matched_comments(self):
+        """
+        测试 process_matched_comments 函数
+        """
+        matched_comments = defaultdict(list, {
+            'ai': ["AI is great", "I love AI"],
+            'GPT': ["GPT is amazing"],
+        })
+        
+        df = process_matched_comments(matched_comments)
+        
+        expected_df = pd.DataFrame([
+            {'关键词': 'ai', '匹配弹幕': "AI is great"},
+            {'关键词': 'ai', '匹配弹幕': "I love AI"},
+            {'关键词': 'GPT', '匹配弹幕': "GPT is amazing"}
+        ])
+
+        pd.testing.assert_frame_equal(df, expected_df)
+
+if __name__ == "__main__":
+    unittest.main()