"""Unit tests for the tool instance service."""

import pytest

from src.services.tool.instance_service import modify_compose_file


@pytest.mark.unit
class TestModifyComposeFile:
    """Tests for modify_compose_file home-directory expansion."""

    def test_extra_volumes_expand_home_dir(self, tmp_path):
        compose_path = tmp_path / "docker-compose.yml"
        compose_path.write_text(
            'services:\n  app:\n    image: test:latest\n    volumes: []\n'
        )

        modify_compose_file(
            str(compose_path),
            extra_volumes=[
                {"source": "/host/config", "target": "~/.config", "type": "bind"},
                {"source": "/host/code", "target": "$HOME/code", "type": "bind"},
            ],
            home_dir="/home/user",
        )

        content = compose_path.read_text()
        assert "/host/config:/home/user/.config" in content
        assert "/host/code:/home/user/code" in content

    def test_working_directory_expands_home_dir(self, tmp_path):
        compose_path = tmp_path / "docker-compose.yml"
        compose_path.write_text(
            'services:\n  app:\n    image: test:latest\n'
        )

        modify_compose_file(
            str(compose_path),
            working_directory="~/workspace",
            home_dir="/home/user",
        )

        content = compose_path.read_text()
        assert "working_dir: /home/user/workspace" in content