import unittest
from unittest.mock import patch, Mock
from detection.requirements_detection import fetch_html, parse_html, format_results

# Assuming the functions from your provided code are imported here
# from your_module import fetch_html, parse_html, format_results, ...


# 测试网页抓取和结果报告的测试类
class TestWebScrapingAndReporting(unittest.TestCase):

    def test_fetch_html_success(self):
        """测试fetch_html在请求成功时返回正确的HTML内容。"""
        with patch("requests.get") as mocked_get:
            mocked_get.return_value.status_code = 200
            mocked_get.return_value.text = "success"
            url = "http://example.com"
            result = fetch_html(url)
            self.assertEqual(result, "success")

    def test_fetch_html_failure(self):
        """测试fetch_html在请求失败时返回None。"""
        with patch("requests.get") as mocked_get:
            mocked_get.return_code.status_code = 404
            url = "http://example.com"
            result = fetch_html(url)
            self.assertIsNone(result)

    def test_parse_html(self):
        """测试parse_html能准确地解析HTML并提取预期的数据。"""
        html_content = """
        <table id="sortable-table">
            <tbody>
                <tr><td></td><td><a href="#">Link1</a><span>Span1</span></td></tr>
                <tr><td></td><td><a href="#">Link2</a><span>Span2</span></td></tr>
            </tbody>
        </table>
        """
        expected = [("Link1", ["Span1"]), ("Link2", ["Span2"])]
        result = parse_html(html_content)
        self.assertEqual(result, expected)

    def test_format_results(self):
        """测试format_results能正确格式化解析后的数据。"""
        results = [("Package1", ["1.0", "2.0"]), ("Package2", ["1.5", "2.5"])]
        expected_output = (
            "Package Name: Package1\nVersion Ranges: 1.0, 2.0\n"
            + "--------------------------------------------------\n"
            + "Package Name: Package2\nVersion Ranges: 1.5, 2.5\n"
            + "--------------------------------------------------\n"
        )
        formatted_result = format_results(results)
        self.assertEqual(formatted_result, expected_output)

    # Additional tests can be added here for other functions.


if __name__ == "__main__":
    unittest.main()