"""Author: Sandeep Belgavi. Evidence completeness and fixture-review contracts."""
import unittest
from pattern_15 import Evidence, Session, Observer


class ObserverTests(unittest.TestCase):
    def make(self, outcome='pending', complete=True, redacted=True, revision='v1'):
        return Observer({'e1': Evidence('e1', revision, outcome, complete, redacted)})

    def test_conflicting_completion_creates_finding(self):
        o = self.make()
        self.assertEqual(o.inspect(Session('s1','v1','completed','e1')), 'finding')

    def test_healthy_session_no_finding(self):
        o = self.make(outcome='completed')
        self.assertEqual(o.inspect(Session('s1','v1','completed','e1')), 'no_finding')
        self.assertEqual(o.findings, {})

    def test_missing_is_unknown(self):
        o = self.make()
        self.assertEqual(o.inspect(Session('s1','v1','completed','absent')), 'unknown')
        self.assertEqual(o.unknown, 1)

    def test_incomplete_is_unknown(self):
        self.assertEqual(self.make(complete=False).inspect(Session('s1','v1','completed','e1')), 'unknown')

    def test_revision_mismatch_is_unknown(self):
        self.assertEqual(self.make(revision='v2').inspect(Session('s1','v1','completed','e1')), 'unknown')

    def test_duplicate_does_not_multiply_finding(self):
        o = self.make()
        s = Session('s1','v1','completed','e1')
        o.inspect(s)
        self.assertEqual(o.inspect(s), 'duplicate')
        self.assertEqual(len(o.findings), 1)

    def test_identifier_conflict_does_not_overwrite(self):
        o = self.make()
        first = Session('s1','v1','completed','e1')
        o.inspect(first)
        self.assertEqual(o.inspect(Session('s1','v1','pending','e1')), 'conflict')
        self.assertEqual(o.findings[('s1','v1')], first)

    def test_approval_required(self):
        o = self.make()
        o.inspect(Session('s1','v1','completed','e1'))
        with self.assertRaises(PermissionError): o.promote_fixture(('s1','v1'))
        self.assertEqual(o.fixtures, {})

    def test_redaction_required(self):
        o = self.make(redacted=False)
        o.inspect(Session('s1','v1','completed','e1'))
        with self.assertRaises(PermissionError): o.promote_fixture(('s1','v1'), approved=True)

    def test_reviewed_fixture_carries_exact_evidence(self):
        o = self.make()
        s = Session('s1','v1','completed','e1')
        o.inspect(s)
        self.assertEqual(o.promote_fixture(('s1','v1'), approved=True), 'fixture_created')
        self.assertEqual(o.fixtures[('s1','v1')], (s, o.evidence['e1']))

    def test_replaced_lookup_cannot_change_reviewed_snapshot(self):
        o = self.make()
        s = Session('s1', 'v1', 'completed', 'e1')
        original = o.evidence['e1']
        o.inspect(s)
        o.evidence['e1'] = Evidence('e1', 'v2', 'completed', True, True)
        o.promote_fixture(('s1', 'v1'), approved=True)
        self.assertEqual(o.fixtures[('s1', 'v1')], (s, original))


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