File size: 6,811 Bytes
fd7800b f5afa05 fd7800b | 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 | import unittest
from unittest.mock import AsyncMock, patch
from app.models import (
DNSResult,
DisposableResult,
RiskLevel,
ScoringResult,
SMTPResult,
SyntaxResult,
ValidationStatus,
)
from app.validator.engine import EmailValidationEngine, _mask_email_for_log
class EngineDNSFailureTests(unittest.IsolatedAsyncioTestCase):
def test_status_thresholds_match_risk_score_bands(self):
engine = EmailValidationEngine()
self.assertEqual(
engine._determine_status(
ScoringResult(score=40, risk_level=RiskLevel.MEDIUM)
),
ValidationStatus.RISKY,
)
self.assertEqual(
engine._determine_status(
ScoringResult(score=39, risk_level=RiskLevel.HIGH)
),
ValidationStatus.INVALID,
)
def test_logs_mask_local_part(self):
self.assertEqual(
_mask_email_for_log("person@example.test"), "p***@example.test"
)
self.assertEqual(_mask_email_for_log("not-an-address"), "[invalid-email]")
async def test_transient_dns_failure_is_risky_without_smtp(self):
dns_result = DNSResult(
domain_exists=False,
has_mx_records=False,
error="DNS timeout",
error_code="timeout",
)
engine = EmailValidationEngine()
with (
patch(
"app.validator.engine.validate_syntax",
return_value=SyntaxResult(
passed=True,
normalized_email="person@example.test",
domain="example.test",
local_part="person",
),
),
patch(
"app.validator.engine.check_dns", new=AsyncMock(return_value=dns_result)
),
patch.object(engine, "use_proxies", False),
patch(
"app.validator.mailbox_provider.smtp_verifier.verify", new=AsyncMock()
) as smtp_verify,
):
result = await engine.validate("person@example.test", deep=True)
self.assertEqual(result.status, ValidationStatus.RISKY)
self.assertEqual(result.dns.error_code, "timeout")
self.assertEqual(result.scoring.score, 50)
self.assertEqual(result.scoring.risk_level.value, "medium")
self.assertEqual(result.scoring.breakdown["DNS_TRANSIENT_FAILURE"], -50)
smtp_verify.assert_not_awaited()
async def test_a_record_fallback_is_risky_even_if_smtp_accepts(self):
dns_result = DNSResult(
domain_exists=True,
has_mx_records=False,
mx_records=[{"host": "example.test", "priority": 0}],
a_fallback=True,
)
class FakeMailbox:
async def verify(self, email, mx_host):
return SMTPResult(verified=True)
async def catch_all(self, domain, mx_host):
return (False, 0.9)
engine = EmailValidationEngine(mailbox=FakeMailbox())
with (
patch(
"app.validator.engine.validate_syntax",
return_value=SyntaxResult(
passed=True,
normalized_email="person@example.test",
domain="example.test",
local_part="person",
),
),
patch(
"app.validator.engine.check_dns", new=AsyncMock(return_value=dns_result)
),
patch("app.validator.engine.check_disposable", return_value=None),
):
result = await engine.validate("person@example.test", deep=True)
self.assertEqual(result.status, ValidationStatus.RISKY)
self.assertTrue(result.dns.a_fallback)
async def test_fast_mode_does_not_claim_mailbox_validity(self):
engine = EmailValidationEngine()
with (
patch(
"app.validator.engine.validate_syntax",
return_value=SyntaxResult(
passed=True,
normalized_email="person@example.test",
domain="example.test",
local_part="person",
),
),
patch(
"app.validator.engine.check_dns",
new=AsyncMock(
return_value=DNSResult(
domain_exists=True,
has_mx_records=True,
mx_records=[{"host": "mx.example.test", "priority": 10}],
)
),
),
patch(
"app.validator.engine.check_disposable",
return_value=DisposableResult(
is_disposable=False,
is_free_provider=False,
is_role_based=False,
),
),
):
result = await engine.validate("person@example.test", deep=False)
self.assertEqual(result.status, ValidationStatus.RISKY)
self.assertIsNone(result.smtp)
self.assertEqual(result.scoring.score, 70)
self.assertEqual(result.scoring.risk_level.value, "medium")
self.assertEqual(
result.scoring.breakdown["FAST_MODE_SKIPPED_MAILBOX_CHECK"], -30
)
self.assertIn("Mailbox verification was not performed", result.scoring.warnings)
async def test_domain_without_mail_routes_is_invalid(self):
dns_result = DNSResult(
domain_exists=True,
has_mx_records=False,
error="Domain has no MX, A, or AAAA records",
error_code="no_mail_records",
)
engine = EmailValidationEngine()
with (
patch(
"app.validator.engine.validate_syntax",
return_value=SyntaxResult(
passed=True,
normalized_email="person@example.test",
domain="example.test",
local_part="person",
),
),
patch(
"app.validator.engine.check_dns", new=AsyncMock(return_value=dns_result)
),
patch(
"app.validator.mailbox_provider.smtp_verifier.verify", new=AsyncMock()
) as smtp_verify,
):
result = await engine.validate("person@example.test", deep=True)
self.assertEqual(result.status, ValidationStatus.INVALID)
self.assertEqual(result.scoring.score, 0)
smtp_verify.assert_not_awaited()
if __name__ == "__main__":
unittest.main()
|