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()