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de745bf 6c516b6 de745bf | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 | """Autonomous-engine engine-level tests (spec Phase 3 gate + Phase 5 verdict).
Verifies the deterministic-first routing, the normalized verdict fields on
both single and batch paths, the EAI deterministic refusal, and the
catch-all-never-valid invariant.
"""
import unittest
from unittest.mock import AsyncMock, patch
from app.config import settings
from app.models import DNSResult, DisposableResult, SMTPResult, SyntaxResult
from app.validator.engine import (
EmailValidationEngine,
_deterministic_verdict,
_smtp_class,
)
GOOD_SYNTAX = SyntaxResult(
passed=True, normalized_email="john@example.test",
domain="example.test", local_part="john",
)
GOOD_DNS = DNSResult(
domain_exists=True, has_mx_records=True,
mx_records=[{"host": "mx.example.test", "priority": 10}],
)
GOOD_DISPOSABLE = DisposableResult(
is_disposable=False, is_free_provider=False, is_role_based=False,
)
class FakeScorer:
"""Records feature strings; returns a fixed score."""
def __init__(self, score=0.2, label="low_risk", fallback_used=False):
self.fixed_score = score
self.label = label
self.fallback_used = fallback_used
self.calls = []
async def score(self, features):
self.calls.append(features)
from app.ml.risk_scorer import AIScore
return AIScore(score=self.fixed_score, label=self.label,
source="heuristic" if self.fallback_used else "inference",
fallback_used=self.fallback_used)
def _build_engine(mailbox, scorer):
from app.validator.validation_cache import ValidationCache
async def _no_get(key):
return None
async def _no_set(key, value, ttl=None):
return None
eng = EmailValidationEngine(
mailbox=mailbox, cache=ValidationCache(get=_no_get, set=_no_set),
scorer=scorer,
)
return eng
def _patch_pipeline(syntax=GOOD_SYNTAX, dns=None, disposable=GOOD_DISPOSABLE):
dns = dns or GOOD_DNS
return (
patch("app.validator.engine.validate_syntax", return_value=syntax),
patch("app.validator.engine.check_dns", new=AsyncMock(return_value=dns)),
patch("app.validator.engine.check_disposable", return_value=disposable),
)
class DeterministicVerdictUnitTests(unittest.TestCase):
def test_explicit_5xx_outranks_catch_all(self):
smtp = SMTPResult(verified=False, smtp_code=550, smtp_message="no such user")
verdict = _deterministic_verdict(None, None, smtp)
self.assertEqual(verdict, "invalid")
def test_catch_all_never_valid(self):
from app.models import CatchAllResult
ca = CatchAllResult(is_catch_all=True, confidence=0.95)
smtp = SMTPResult(verified=True, smtp_code=250)
self.assertEqual(_deterministic_verdict(None, ca, smtp), "catch_all")
def test_definitive_accept_is_valid(self):
smtp = SMTPResult(verified=True, smtp_code=250)
self.assertEqual(_deterministic_verdict(None, None, smtp), "valid")
def test_disposable_outranks_everything(self):
from app.models import DisposableResult
d = DisposableResult(is_disposable=True, is_free_provider=False,
is_role_based=False)
smtp = SMTPResult(verified=True, smtp_code=250)
self.assertEqual(_deterministic_verdict(d, None, smtp), "disposable")
def test_inconclusive_is_unknown(self):
smtp = SMTPResult(verified=None, error="smtp_unreachable: egress blocked")
self.assertEqual(_deterministic_verdict(None, None, smtp), "unknown")
def test_smtp_class_mapping(self):
self.assertEqual(_smtp_class(SMTPResult(verified=True, smtp_code=250)), "accept")
self.assertEqual(_smtp_class(SMTPResult(verified=False, smtp_code=550)), "5xx")
self.assertEqual(_smtp_class(SMTPResult(verified=False, smtp_code=451)), "4xx")
self.assertEqual(
_smtp_class(SMTPResult(verified=None, error="smtp_unreachable: blocked")),
"transport_error",
)
self.assertEqual(_smtp_class(None), "skipped")
class SinglePathTests(unittest.IsolatedAsyncioTestCase):
async def test_ambiguous_rows_reach_scorer_and_get_fields(self):
mailbox_accepts = AsyncMock()
mailbox_accepts.name = "fake"
mailbox_accepts.verify = AsyncMock(
return_value=SMTPResult(verified=None, error="smtp_unreachable: egress")
)
mailbox_accepts.catch_all = AsyncMock(return_value=(True, 0.9))
scorer = FakeScorer(score=0.75, label="high_risk", fallback_used=True)
eng = _build_engine(mailbox_accepts, scorer)
patches = _patch_pipeline()
with patches[0], patches[1], patches[2]:
result = await eng.validate("john@example.test", deep=True)
self.assertEqual(result.deterministic_verdict, "catch_all")
self.assertEqual(result.ai_risk_score, 0.75)
self.assertEqual(result.ai_label, "high_risk")
self.assertTrue(result.fallback_used)
# catch-all NEVER collapses into valid regardless of the AI score.
self.assertNotEqual(result.status.value, "valid")
self.assertIn("ai_high_risk", result.scoring.warnings)
self.assertEqual(len(scorer.calls), 1)
async def test_deterministic_rows_never_reach_scorer(self):
mailbox = AsyncMock()
mailbox.name = "fake"
mailbox.verify = AsyncMock(
return_value=SMTPResult(verified=False, smtp_code=550,
smtp_message="550 no such user")
)
mailbox.catch_all = AsyncMock(return_value=(False, 0.9))
scorer = FakeScorer()
eng = _build_engine(mailbox, scorer)
patches = _patch_pipeline()
with patches[0], patches[1], patches[2]:
result = await eng.validate("john@example.test", deep=True)
self.assertEqual(result.deterministic_verdict, "invalid")
self.assertEqual(scorer.calls, [])
self.assertIsNone(result.ai_risk_score)
self.assertFalse(result.fallback_used)
async def test_eai_address_refused_deterministically(self):
unicode_syntax = SyntaxResult(
passed=True, normalized_email="用户@example.test",
domain="example.test", local_part="用户",
)
mailbox = AsyncMock()
mailbox.name = "fake"
mailbox.verify = AsyncMock(
side_effect=AssertionError("must not probe an EAI address")
)
mailbox.catch_all = AsyncMock(return_value=(None, 0.0))
scorer = FakeScorer()
eng = _build_engine(mailbox, scorer)
patches = _patch_pipeline(syntax=unicode_syntax)
with patches[0], patches[1], patches[2]:
result = await eng.validate("用户@example.test", deep=True)
self.assertEqual(result.reason_code, "unsupported_eai")
mailbox.verify.assert_not_awaited()
# The domain-level catch-all probe still ran (independent of local part).
mailbox.catch_all.assert_awaited_once()
async def test_dns_inconsistent_adds_warning(self):
bad_dns = DNSResult(
domain_exists=True, has_mx_records=True,
mx_records=[{"host": "mx.example.test", "priority": 10}],
dns_inconsistent=True, mx_source="doh:dual",
)
mailbox = AsyncMock()
mailbox.name = "fake"
mailbox.verify = AsyncMock(
return_value=SMTPResult(verified=None, error="smtp_unreachable: egress")
)
mailbox.catch_all = AsyncMock(return_value=(True, 0.9))
scorer = FakeScorer(score=0.3, label="low_risk")
eng = _build_engine(mailbox, scorer)
patches = _patch_pipeline(dns=bad_dns)
with patches[0], patches[1], patches[2]:
result = await eng.validate("john@example.test", deep=True)
self.assertIn("dns_inconsistent: resolvers disagree on MX",
result.scoring.warnings)
# The inconsistency is visible to the scorer feature string.
self.assertIn("dns_consistent=no", scorer.calls[0])
async def test_fast_path_has_no_deterministic_verdict(self):
scorer = FakeScorer()
eng = _build_engine(AsyncMock(), scorer)
patches = _patch_pipeline()
with patches[0], patches[1], patches[2]:
result = await eng.validate("john@example.test", deep=False)
self.assertIsNone(result.deterministic_verdict)
self.assertEqual(scorer.calls, [])
class BatchPathTests(unittest.IsolatedAsyncioTestCase):
async def test_batch_rows_carry_normalized_fields(self):
class BatchMailbox:
name = "fake-batch"
async def verify_many(self, pairs):
results = {
e: SMTPResult(verified=None, error="smtp_unreachable: egress")
for e, _ in pairs
}
return results, {"example.test": True}
scorer = FakeScorer(score=0.55, label="medium_risk", fallback_used=True)
eng = _build_engine(BatchMailbox(), scorer)
patches = _patch_pipeline()
with patches[0], patches[1], patches[2]:
results = await eng.validate_batch(
["john@example.test", "jane@example.test"], deep=True
)
self.assertEqual(len(results), 2)
for row in results:
self.assertEqual(row.deterministic_verdict, "catch_all")
self.assertEqual(row.ai_label, "medium_risk")
self.assertEqual(row.ai_risk_score, 0.55)
self.assertTrue(row.fallback_used)
self.assertFalse(row.cache_hit)
# Feature dedupe: identical rows share one scorer call.
self.assertEqual(len(scorer.calls), 1)
async def test_batch_eai_refused_without_probe(self):
class BatchMailbox:
name = "fake-batch"
async def verify_many(self, pairs):
# Fires only if the EAI row wrongly reaches the mailbox stage.
assert all(
all(ord(c) < 128 for c in e.rsplit("@", 1)[0]) for e, _ in pairs
), "EAI rows must not reach the mailbox stage"
results = {
e: SMTPResult(verified=None, error="smtp_unreachable: egress")
for e, _ in pairs
}
return results, {"example.test": True}
ascii_syntax = GOOD_SYNTAX
unicode_syntax = SyntaxResult(
passed=True, normalized_email="用户@example.test",
domain="example.test", local_part="用户",
)
def syntax_side(email):
return unicode_syntax if "用户" in email else ascii_syntax
scorer = FakeScorer(score=0.5, label="medium_risk")
eng = _build_engine(BatchMailbox(), scorer)
syntax_patch, dns_patch, disposable_patch = _patch_pipeline()
with patch("app.validator.engine.validate_syntax", side_effect=syntax_side), \
dns_patch, disposable_patch:
results = await eng.validate_batch(
["john@example.test", "用户@example.test"], deep=True
)
by_email = {r.email: r for r in results}
self.assertEqual(by_email["用户@example.test"].reason_code, "unsupported_eai")
self.assertEqual(by_email["john@example.test"].deterministic_verdict,
"catch_all")
if __name__ == "__main__":
unittest.main()
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