"""Offline tests for deterministic data conversion and mismatch rejection."""
import hashlib
import importlib.util
import json
import shutil
import tempfile
import unittest
from pathlib import Path

MODULE=Path(__file__).with_name('export_data.py')
spec=importlib.util.spec_from_file_location('export_data',MODULE)
exporter=importlib.util.module_from_spec(spec)
spec.loader.exec_module(exporter)

class ExportTests(unittest.TestCase):
    source=Path(__file__).parent/'research'
    def test_determinism_schema_and_integrity(self):
        source_hashes={p.relative_to(self.source).as_posix():hashlib.sha256(p.read_bytes()).hexdigest() for p in self.source.rglob('*') if p.is_file()}
        with tempfile.TemporaryDirectory() as d:
            a,b=Path(d)/'a',Path(d)/'b'
            exporter.export(self.source,a)
            exporter.export(self.source,b)
            for name,count in [('cases.jsonl',24),('generations.jsonl',192)]:
                self.assertEqual((a/name).read_bytes(),(b/name).read_bytes())
                rows=[json.loads(s) for s in (a/name).read_text().splitlines()]
                self.assertEqual(len(rows),count)
                keys=set(rows[0])
                for row in rows:
                    self.assertEqual(set(row),keys)
                    for key,value in row.items():
                        self.assertIn(type(value),(str,int,float,bool,type(None)))
                        self.assertEqual(type(value),type(rows[0][key]))
        self.assertEqual(source_hashes,{p.relative_to(self.source).as_posix():hashlib.sha256(p.read_bytes()).hexdigest() for p in self.source.rglob('*') if p.is_file()})
    def test_snapshot_mismatch_rejected(self):
        with tempfile.TemporaryDirectory() as d:
            copy=Path(d)/'research'
            shutil.copytree(self.source,copy)
            path=copy/'snapshots/n8_seed81200_g1.json'
            payload=json.loads(path.read_text())
            payload['known_semantics'] += 1
            path.write_text(json.dumps(payload))
            with self.assertRaises(AssertionError):
                exporter.export(copy,Path(d)/'data')

if __name__=='__main__':
    import sys
    if len(sys.argv)>1 and sys.argv[1]=='--source':
        ExportTests.source=Path(sys.argv[2]); del sys.argv[1:3]
    unittest.main()