#!/usr/bin/env python3
"""Negative runner checks stop before any native process/audio initialization."""
from pathlib import Path
import subprocess
import sys
import tempfile
import unittest

ROOT = Path(__file__).resolve().parents[1]

class EnvironmentRestartRunnerTests(unittest.TestCase):
    def invoke(self, profile, *extra):
        return subprocess.run([sys.executable, str(ROOT/'tools/headless_workbench.py'),
            '--compat', str(profile/'missing-prefix'), '--profile', str(profile),
            '--smoke', 'environment-restart', '--project', 'core', '--rounds', '2',
            *extra], text=True, capture_output=True)

    def test_requires_two_core_rounds(self):
        with tempfile.TemporaryDirectory() as directory:
            for extra in [('--rounds','1'), ('--rounds','3'), ('--project','chat')]:
                with self.subTest(extra=extra):
                    result = self.invoke(Path(directory), *extra)
                    self.assertNotEqual(result.returncode, 0)
                    self.assertIn('requires --project core --rounds 2', result.stderr)

    def test_every_existing_fixture_file_is_refused_and_preserved(self):
        for name in ['erri-environment-restart.json', 'erri-environment-restart.json.bak',
                     'erri-environment-restart.json.tmp', 'erri-environment-restart-round.json']:
            with self.subTest(name=name), tempfile.TemporaryDirectory() as directory:
                profile = Path(directory)
                path = profile/name
                path.write_text('prior evidence')
                result = self.invoke(profile)
                self.assertNotEqual(result.returncode, 0)
                self.assertIn('fixture paths must not preexist', result.stderr)
                self.assertEqual(path.read_text(), 'prior evidence')

    def test_broken_fixture_symlink_is_refused(self):
        with tempfile.TemporaryDirectory() as directory:
            profile = Path(directory)
            (profile/'erri-environment-restart.json').symlink_to(profile/'missing-target')
            result = self.invoke(profile)
            self.assertIn('fixture paths must not preexist', result.stderr)
            self.assertTrue((profile/'erri-environment-restart.json').is_symlink())

    def test_empty_fixture_reaches_existing_prefix_guard_without_side_effects(self):
        with tempfile.TemporaryDirectory() as directory:
            profile = Path(directory)
            result = self.invoke(profile)
            self.assertNotEqual(result.returncode, 0)
            self.assertIn('must be a disposable cloned prefix', result.stderr)
            self.assertEqual(list(profile.iterdir()), [])

    def test_existing_environment_outcome_does_not_acquire_restart_path_policy(self):
        with tempfile.TemporaryDirectory() as directory:
            profile = Path(directory)
            (profile/'erri-environment-restart.json').write_text('prior evidence')
            result = self.invoke(profile, '--smoke', 'environment', '--rounds', '1')
            self.assertIn('must be a disposable cloned prefix', result.stderr)
            self.assertNotIn('fixture paths must not preexist', result.stderr)

if __name__ == '__main__': unittest.main()