"""DocxSplitter 测试."""
import pytest

pytest.importorskip("markitdown", reason="需要 markitdown 库")

from src.core.splitters.docx import DocxSplitter


def test_docx_splitter_creates():
    """创建 DocxSplitter 实例."""
    s = DocxSplitter(max_size=500, overlap=50)
    assert s is not None


def test_docx_splitter_empty_text():
    """空纯文本返回空列表."""
    s = DocxSplitter()
    result = s.split("   ", source_file="empty.docx")
    assert result == []


def test_docx_splitter_basic_text():
    """基本文本文档分块."""
    s = DocxSplitter(max_size=200, overlap=20)
    text = "段落A。\n\n段落B。\n\n段落C。"
    result = s.split(text, source_file="test.docx")
    assert len(result) >= 1
    assert all("content" in r for r in result)
    assert all(r["source_file"] == "test.docx" for r in result)


def test_docx_splitter_long_text():
    """长文本分多块."""
    s = DocxSplitter(max_size=100, overlap=10)
    text = "这是一段非常长的文本。\n\n" * 50
    result = s.split(text, source_file="long.docx")
    assert len(result) >= 5


def test_docx_splitter_source_file():
    """source_file 正确传递到每个 chunk."""
    s = DocxSplitter(max_size=500, overlap=50)
    result = s.split("测试内容。", source_file="myfile.docx")
    assert all(r["source_file"] == "myfile.docx" for r in result)


def test_docx_splitter_chunk_index():
    """chunk_index 从 0 递增."""
    s = DocxSplitter(max_size=100, overlap=10)
    text = "chunk A。\n\n" * 20
    result = s.split(text, source_file="index.docx")
    indices = [r["chunk_index"] for r in result]
    assert indices == list(range(len(result)))