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orion/app/modules/loyalty/tests/unit/test_stamp_service.py
Samir Boulahtit 7d652716bb
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feat(loyalty): production readiness round 2 — 12 security, integrity & correctness fixes
Security:
- Fix TOCTOU race conditions: move balance/limit checks after row lock in redeem_points, add_stamp, redeem_stamps
- Add PIN ownership verification to update/delete/unlock store routes
- Gate adjust_points endpoint to merchant_owner role only

Data integrity:
- Track total_points_voided in void_points
- Add order_reference idempotency guard in earn_points

Correctness:
- Fix LoyaltyProgramAlreadyExistsException to use merchant_id parameter
- Add StorefrontProgramResponse excluding wallet IDs from public API
- Add bounds (±100000) to PointsAdjustRequest.points_delta

Audit & config:
- Add CARD_REACTIVATED transaction type with audit record
- Improve admin audit logging with actor identity and old values
- Use merchant-specific PIN lockout settings with global fallback
- Guard MerchantLoyaltySettings creation with get_or_create pattern

Tests: 27 new tests (265 total) covering all 12 items — unit and integration.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-16 23:37:23 +01:00

354 lines
11 KiB
Python

"""Unit tests for StampService."""
import uuid
from datetime import UTC, datetime, timedelta
import pytest
from app.modules.loyalty.exceptions import (
DailyStampLimitException,
InsufficientStampsException,
StampCooldownException,
)
from app.modules.loyalty.models import LoyaltyCard, LoyaltyProgram, LoyaltyTransaction
from app.modules.loyalty.models.loyalty_program import LoyaltyType
from app.modules.loyalty.models.loyalty_transaction import TransactionType
from app.modules.loyalty.services.stamp_service import StampService
from app.modules.tenancy.models import Merchant, Store, User
from app.modules.tenancy.models.store import StoreUser
@pytest.mark.unit
@pytest.mark.loyalty
class TestStampService:
"""Test suite for StampService."""
def setup_method(self):
self.service = StampService()
def test_service_instantiation(self):
"""Service can be instantiated."""
assert self.service is not None
# ============================================================================
# Fixtures
# ============================================================================
@pytest.fixture
def stamp_setup(db):
"""Create a full setup for stamp tests with stamps-type program."""
from app.modules.customers.models.customer import Customer
from middleware.auth import AuthManager
auth = AuthManager()
uid = uuid.uuid4().hex[:8]
owner = User(
email=f"stampowner_{uid}@test.com",
username=f"stampowner_{uid}",
hashed_password=auth.hash_password("testpass"),
role="merchant_owner",
is_active=True,
is_email_verified=True,
)
db.add(owner)
db.commit()
db.refresh(owner)
merchant = Merchant(
name=f"Stamp Merchant {uid}",
owner_user_id=owner.id,
contact_email=owner.email,
is_active=True,
is_verified=True,
)
db.add(merchant)
db.commit()
db.refresh(merchant)
store = Store(
merchant_id=merchant.id,
store_code=f"STAMP_{uid.upper()}",
subdomain=f"stamp{uid}",
name=f"Stamp Store {uid}",
is_active=True,
is_verified=True,
)
db.add(store)
db.commit()
db.refresh(store)
store_user = StoreUser(store_id=store.id, user_id=owner.id, is_active=True)
db.add(store_user)
db.commit()
customer = Customer(
email=f"stampcust_{uid}@test.com",
first_name="Stamp",
last_name="Customer",
hashed_password="!unused!", # noqa: SEC001
customer_number=f"SC-{uid.upper()}",
store_id=store.id,
is_active=True,
)
db.add(customer)
db.commit()
db.refresh(customer)
program = LoyaltyProgram(
merchant_id=merchant.id,
loyalty_type=LoyaltyType.STAMPS.value,
stamps_target=5,
stamps_reward_description="Free coffee",
stamps_reward_value_cents=500,
cooldown_minutes=0,
max_daily_stamps=10,
require_staff_pin=False,
card_name="Stamp Card",
card_color="#FF0000",
is_active=True,
points_per_euro=1,
)
db.add(program)
db.commit()
db.refresh(program)
card = LoyaltyCard(
merchant_id=merchant.id,
program_id=program.id,
customer_id=customer.id,
enrolled_at_store_id=store.id,
card_number=f"STAMPCARD-{uid.upper()}",
stamp_count=0,
total_stamps_earned=0,
stamps_redeemed=0,
points_balance=0,
total_points_earned=0,
points_redeemed=0,
is_active=True,
last_activity_at=datetime.now(UTC),
)
db.add(card)
db.commit()
db.refresh(card)
return {
"merchant": merchant,
"store": store,
"customer": customer,
"program": program,
"card": card,
}
# ============================================================================
# Add Stamp Tests
# ============================================================================
@pytest.mark.unit
@pytest.mark.loyalty
class TestAddStamp:
"""Tests for add_stamp."""
def setup_method(self):
self.service = StampService()
def test_add_stamp_success(self, db, stamp_setup):
"""Successfully add a stamp to a card."""
card = stamp_setup["card"]
store = stamp_setup["store"]
result = self.service.add_stamp(db, store_id=store.id, card_id=card.id)
assert result["success"] is True
assert result["stamp_count"] == 1
assert result["stamps_target"] == 5
assert result["stamps_until_reward"] == 4
def test_add_stamp_cooldown_violation(self, db, stamp_setup):
"""Stamp within cooldown period raises exception."""
card = stamp_setup["card"]
store = stamp_setup["store"]
program = stamp_setup["program"]
# Set cooldown
program.cooldown_minutes = 15
db.commit()
# Add first stamp
self.service.add_stamp(db, store_id=store.id, card_id=card.id)
# Second stamp should fail (cooldown)
with pytest.raises(StampCooldownException):
self.service.add_stamp(db, store_id=store.id, card_id=card.id)
def test_add_stamp_daily_limit(self, db, stamp_setup):
"""Exceeding daily stamp limit raises exception."""
card = stamp_setup["card"]
store = stamp_setup["store"]
program = stamp_setup["program"]
# Set max 2 daily stamps
program.max_daily_stamps = 2
db.commit()
# Add 2 stamps
self.service.add_stamp(db, store_id=store.id, card_id=card.id)
self.service.add_stamp(db, store_id=store.id, card_id=card.id)
# Third should fail
with pytest.raises(DailyStampLimitException):
self.service.add_stamp(db, store_id=store.id, card_id=card.id)
# ============================================================================
# Redeem Stamps Tests
# ============================================================================
@pytest.mark.unit
@pytest.mark.loyalty
class TestRedeemStamps:
"""Tests for redeem_stamps."""
def setup_method(self):
self.service = StampService()
def test_redeem_stamps_success(self, db, stamp_setup):
"""Successfully redeem stamps for a reward."""
card = stamp_setup["card"]
store = stamp_setup["store"]
program = stamp_setup["program"]
# Give enough stamps
card.stamp_count = program.stamps_target
card.total_stamps_earned = program.stamps_target
db.commit()
result = self.service.redeem_stamps(db, store_id=store.id, card_id=card.id)
assert result["success"] is True
assert result["stamp_count"] == 0
assert result["reward_description"] == "Free coffee"
def test_redeem_stamps_insufficient(self, db, stamp_setup):
"""Redeeming without enough stamps raises exception."""
card = stamp_setup["card"]
store = stamp_setup["store"]
# Card has 0 stamps, needs 5
with pytest.raises(InsufficientStampsException):
self.service.redeem_stamps(db, store_id=store.id, card_id=card.id)
# ============================================================================
# Void Stamps Tests
# ============================================================================
@pytest.mark.unit
@pytest.mark.loyalty
class TestVoidStamps:
"""Tests for void_stamps."""
def setup_method(self):
self.service = StampService()
def test_void_stamps_by_transaction(self, db, stamp_setup):
"""Void stamps by original transaction ID."""
card = stamp_setup["card"]
store = stamp_setup["store"]
# Add a stamp first
result = self.service.add_stamp(db, store_id=store.id, card_id=card.id)
assert result["stamp_count"] == 1
# Find the transaction
tx = (
db.query(LoyaltyTransaction)
.filter(
LoyaltyTransaction.card_id == card.id,
LoyaltyTransaction.transaction_type == TransactionType.STAMP_EARNED.value,
)
.first()
)
void_result = self.service.void_stamps(
db,
store_id=store.id,
card_id=card.id,
original_transaction_id=tx.id,
)
assert void_result["success"] is True
assert void_result["stamp_count"] == 0
# ============================================================================
# Item 1: TOCTOU Race Condition (stamp checks after lock)
# ============================================================================
@pytest.mark.unit
@pytest.mark.loyalty
class TestStampTOCTOU:
"""Verify cooldown/daily-limit checks happen after row lock."""
def setup_method(self):
self.service = StampService()
def test_cooldown_checked_after_lock(self, db, stamp_setup):
"""Cooldown check uses locked row state."""
card = stamp_setup["card"]
store = stamp_setup["store"]
program = stamp_setup["program"]
# Enable cooldown
program.cooldown_minutes = 60
db.commit()
# First stamp succeeds
self.service.add_stamp(db, store_id=store.id, card_id=card.id)
# Second stamp should fail (cooldown active after lock)
with pytest.raises(StampCooldownException):
self.service.add_stamp(db, store_id=store.id, card_id=card.id)
def test_daily_limit_checked_after_lock(self, db, stamp_setup):
"""Daily limit check uses locked row state."""
card = stamp_setup["card"]
store = stamp_setup["store"]
program = stamp_setup["program"]
program.max_daily_stamps = 1
db.commit()
# First stamp succeeds
self.service.add_stamp(db, store_id=store.id, card_id=card.id)
# Second stamp should fail (daily limit after lock)
with pytest.raises(DailyStampLimitException):
self.service.add_stamp(db, store_id=store.id, card_id=card.id)
def test_redeem_stamps_insufficient_after_lock(self, db, stamp_setup):
"""Stamp count check uses locked row state."""
card = stamp_setup["card"]
store = stamp_setup["store"]
program = stamp_setup["program"]
# Give exact stamp target
card.stamp_count = program.stamps_target
card.total_stamps_earned = program.stamps_target
db.commit()
# First redeem succeeds
result = self.service.redeem_stamps(db, store_id=store.id, card_id=card.id)
assert result["success"] is True
# Second redeem should fail (0 stamps after lock)
with pytest.raises(InsufficientStampsException):
self.service.redeem_stamps(db, store_id=store.id, card_id=card.id)