import copy,importlib.util,unittest,tempfile,json
from pathlib import Path

spec=importlib.util.spec_from_file_location('successor',Path(__file__).with_name('reconcile.py'))
successor=importlib.util.module_from_spec(spec);spec.loader.exec_module(successor)

class FrontendSuccessorMembership(unittest.TestCase):
    def setUp(self):
        cases=[{'fullName':f'original-{i}','status':'passed'} for i in range(934)]
        cases[1]['fullName']=cases[0]['fullName']
        self.baseline={'testResults':[{'name':'/repo/job-tracker-ui/src/cv-builder-deep-link.test.tsx','assertionResults':cases}]}
        self.actual=copy.deepcopy(self.baseline)
        self.actual['testResults'][0]['assertionResults'].append({'fullName':successor.ADDED_CASE,'status':'passed'})
    def test_accepts_exactly_one_declared_addition_without_mutating_reference(self):
        before=copy.deepcopy(self.baseline)
        self.assertEqual(len(successor.frontend_cases(self.actual,self.baseline,0)),935)
        self.assertEqual(self.baseline,before)
    def test_missing_original_or_changed_duplicate_multiplicity_is_rejected(self):
        self.actual['testResults'][0]['assertionResults'][1]['fullName']='unexpected-replacement'
        with self.assertRaises(ValueError): successor.frontend_cases(self.actual,self.baseline,0)
    def test_added_case_cannot_be_skipped_or_retried(self):
        self.actual['testResults'][0]['assertionResults'][-1]['status']='pending'
        with self.assertRaises(ValueError): successor.frontend_cases(self.actual,self.baseline,0)
    def test_nonzero_process_cannot_be_promoted(self):
        with self.assertRaises(ValueError): successor.frontend_cases(self.actual,self.baseline,1)

class RepresentativeEvidence(unittest.TestCase):
    def setUp(self):
        self.temporary=tempfile.TemporaryDirectory();self.addCleanup(self.temporary.cleanup)
        self.root=Path(self.temporary.name)
        cases=[{'fixture':name,'pass':True,'failures':[]} for name in ['long-skills-minimal-en','long-skills-technical-nb']]
        self.report={'total':2,'passed':2,'fixtures':cases}
        self.proof={'status':'PASS','oracleExitCode':0,'cases':cases}
    def test_exact_membership_and_matching_successful_cases(self):
        successor.validate_representative(self.proof,self.report)
    def test_empty_or_unrelated_report_is_rejected(self):
        for report in [{'total':0,'passed':0,'fixtures':[]},dict(self.report,fixtures=[self.report['fixtures'][0]]*2)]:
            with self.assertRaises(ValueError): successor.validate_representative(self.proof,report)
    def test_failed_or_changed_case_is_rejected(self):
        report=copy.deepcopy(self.report);report['fixtures'][0]['failures']=['clipping']
        with self.assertRaises(ValueError): successor.validate_representative(self.proof,report)
    def test_hash_drift_is_rejected(self):
        file=self.root/'export.pdf';file.write_bytes(b'original')
        inputs={str(file):successor.hashlib.sha256(file.read_bytes()).hexdigest()}
        successor.require_unchanged(inputs)
        file.write_bytes(b'changed')
        with self.assertRaises(ValueError): successor.require_unchanged(inputs)

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