"""Tests for _resolve_path() — TERMINAL_CWD-aware path resolution in file_tools."""

import os
from pathlib import Path

import pytest


class TestResolvePath:
    """Verify _resolve_path respects TERMINAL_CWD for worktree isolation."""

    def test_relative_path_uses_terminal_cwd(self, monkeypatch, tmp_path):
        """Relative paths resolve against TERMINAL_CWD, not process CWD."""
        monkeypatch.setenv("TERMINAL_CWD", str(tmp_path))
        from tools.file_tools import _resolve_path

        result = _resolve_path("foo/bar.py")
        assert result == (tmp_path / "foo" / "bar.py")

    def test_absolute_path_ignores_terminal_cwd(self, monkeypatch, tmp_path):
        """Absolute paths are unaffected by TERMINAL_CWD."""
        monkeypatch.setenv("TERMINAL_CWD", str(tmp_path))
        from tools.file_tools import _resolve_path

        result = _resolve_path("/etc/hosts")
        assert result == Path("/etc/hosts")

    def test_falls_back_to_cwd_without_terminal_cwd(self, monkeypatch):
        """Without TERMINAL_CWD, falls back to os.getcwd()."""
        monkeypatch.delenv("TERMINAL_CWD", raising=False)
        from tools.file_tools import _resolve_path

        result = _resolve_path("some_file.txt")
        assert result == Path(os.getcwd()) / "some_file.txt"

    def test_tilde_expansion(self, monkeypatch, tmp_path):
        """~ is expanded before TERMINAL_CWD join (already absolute)."""
        monkeypatch.setenv("TERMINAL_CWD", str(tmp_path))
        from tools.file_tools import _resolve_path

        result = _resolve_path("~/notes.txt")
        # After expanduser, ~/notes.txt becomes absolute → TERMINAL_CWD ignored
        assert result == Path.home() / "notes.txt"

    def test_result_is_resolved(self, monkeypatch, tmp_path):
        """Output path has no '..' components."""
        monkeypatch.setenv("TERMINAL_CWD", str(tmp_path))
        from tools.file_tools import _resolve_path

        result = _resolve_path("a/../b/file.txt")
        assert ".." not in str(result)
        assert result == (tmp_path / "b" / "file.txt")