"""测试文件检测工具函数。"""

from utils import is_url, is_html_file


class TestIsUrl:
    """测试 is_url 函数。"""

    def test_http_url(self):
        assert is_url("http://example.com") is True

    def test_https_url(self):
        assert is_url("https://example.com") is True

    def test_not_url(self):
        assert is_url("file.txt") is False


class TestIsHtmlFile:
    """测试 is_html_file 函数。"""

    def test_html_extension(self):
        assert is_html_file("file.html") is True

    def test_htm_extension(self):
        assert is_html_file("file.htm") is True

    def test_uppercase_extension(self):
        assert is_html_file("FILE.HTML") is True

    def test_not_html(self):
        assert is_html_file("file.txt") is False