"""Envelope tests for clone command."""
from __future__ import annotations
from collections.abc import Mapping
import json
import pytest
from tests.cli_test_helper import CliRunner

runner = CliRunner()

_FIELDS = ("muse_version", "schema", "timestamp", "warnings")


def _check(d: Mapping[str, object]) -> None:
    for f in _FIELDS:
        assert f in d, f"missing {f}"
    assert "schema_version" not in d


class TestCloneEnvelope:
    def test_clone_already_exists_has_envelope(self) -> None:
        # Cloning into the current directory (which already has .muse/) triggers
        # the "already_exists" path immediately — no network call needed.
        r = runner.invoke(None, ["clone", "http://example.com/repo", ".", "--json"])
        # exits with USER_ERROR but must emit a JSON envelope on the first line
        first_line = r.output.strip().splitlines()[0]
        d = json.loads(first_line)
        _check(d)
        assert d["status"] == "already_exists"