from pathlib import PurePosixPath

import pytest
from personal_mcp.registry.models.registry import DocsRegistry

from personal_mcp.registry.load import read_docs_markdown_path

pytestmark = pytest.mark.unit


def _make_registry() -> DocsRegistry:
    index_path = PurePosixPath("index.md")
    return DocsRegistry(
        docs_markdown_by_path={index_path: "# index"},
        docs_markdown_path_index=(index_path,),
    )


def test_reads_docs_path_from_string_boundary() -> None:
    payload = read_docs_markdown_path(_make_registry(), "index.md")

    assert payload == {
        "uri": "resource://docs/index.md",
        "format": "markdown",
        "source_path": "docs/index.md",
        "content": "# index",
    }


def test_rejects_skill_docs_path() -> None:
    with pytest.raises(KeyError, match="unknown docs path"):
        read_docs_markdown_path(_make_registry(), "skills/demo/SKILL.md")


def test_rejects_non_posix_docs_path() -> None:
    with pytest.raises(ValueError, match="POSIX separators"):
        read_docs_markdown_path(_make_registry(), "guides\\demo.md")