"""Envelope tests for ``muse agent-map --json``."""
from __future__ import annotations
import json
import pytest
from tests.cli_test_helper import CliRunner

runner = CliRunner()

class TestAgentMapEnvelope:
    def test_has_muse_version(self) -> None:
        r = runner.invoke(None, ["agent-map", "tracks/fake.mid", "-j"])
        # May succeed with empty attributions or fail with repo/track error;
        # either way, JSON mode must emit valid JSON with envelope fields.
        if r.exit_code == 0:
            d = json.loads(r.output)
            assert "muse_version" in d
            assert "schema" in d
            assert "timestamp" in d
            assert "warnings" in d
            assert "schema_version" not in d