"""测试 Native XML PPTX Reader 的解析功能。"""

import pytest
from readers.pptx import native_xml


class TestNativeXmlPptxReaderParse:
    """测试 Native XML PPTX Reader 的 parse 方法。"""

    def test_normal_file(self, temp_pptx):
        """测试正常 PPTX 文件解析。"""
        file_path = temp_pptx(slides=[("标题幻灯片", "幻灯片内容"), ("第二页", "第二页内容")])
        content, error = native_xml.parse(file_path)
        if content is not None:
            assert "标题" in content or "幻灯片" in content or "内容" in content

    def test_file_not_exists(self, tmp_path):
        """测试文件不存在的情况。"""
        non_existent_file = str(tmp_path / "non_existent.pptx")
        content, error = native_xml.parse(non_existent_file)
        assert content is None
        assert error is not None

    def test_empty_file(self, temp_pptx):
        """测试空 PPTX 文件。"""
        file_path = temp_pptx()
        content, error = native_xml.parse(file_path)
        assert content is None or content.strip() == ""

    def test_corrupted_file(self, temp_pptx, tmp_path):
        """测试损坏的 PPTX 文件。"""
        file_path = temp_pptx(slides=[("测试", "内容")])
        with open(file_path, "wb") as f:
            f.write(b"corrupted content")
        content, error = native_xml.parse(file_path)
        assert content is None
        assert error is not None

    def test_special_chars(self, temp_pptx):
        """测试特殊字符处理。"""
        file_path = temp_pptx(slides=[("中文标题 😀", "特殊符号 ©®")])
        content, error = native_xml.parse(file_path)
        if content is not None:
            assert "中文" in content or "标题" in content