"""Envelope tests for breakage command."""
from __future__ import annotations
import json
import pytest
from tests.cli_test_helper import CliRunner

runner = CliRunner()

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


def _check(d: dict) -> None:
    for f in _FIELDS:
        assert f in d, f"missing {f}"
    assert "schema_version" not in d
    assert isinstance(d["warnings"], list)


class TestBreakageEnvelope:
    def test_breakage_has_envelope(self):
        r = runner.invoke(None, ["code", "breakage", "--json"])
        assert r.exit_code == 0, r.output
        d = json.loads(r.output)
        _check(d)
        assert "warning_count" in d