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feat(loyalty): production readiness round 2 — 12 security, integrity & correctness fixes
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Browse Source 
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>
This commit is contained in:
Samir Boulahtit
2026-03-16 23:37:23 +01:00
parent b6047f5b7d
commit 7d652716bb
20 changed files with 955 additions and 28 deletions
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340
app/modules/loyalty/tests/integration/test_store_api.py
View File

@@ -462,3 +462,343 @@ class TestStampEarnRedeem:
data = response.json()
assert data["success"] is True
assert data["stamp_count"] == 0
# ============================================================================
# Item 2: PIN Ownership Checks
# ============================================================================
@pytest.fixture
def pin_ownership_setup(db, loyalty_platform):
"""Setup two stores under same merchant for PIN ownership tests."""
from app.modules.customers.models.customer import Customer
from app.modules.loyalty.models import StaffPin
from app.modules.tenancy.models.store import StoreUser
from app.modules.tenancy.models.store_platform import StorePlatform
from middleware.auth import AuthManager
auth = AuthManager()
uid = uuid.uuid4().hex[:8]
owner = User(
email=f"pinown_{uid}@test.com",
username=f"pinown_{uid}",
hashed_password=auth.hash_password("storepass123"),
role="merchant_owner",
is_active=True,
is_email_verified=True,
)
db.add(owner)
db.commit()
db.refresh(owner)
from app.modules.tenancy.models import Merchant, Store
merchant = Merchant(
name=f"Pin Own 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 A (owner's store)
store_a = Store(
merchant_id=merchant.id,
store_code=f"PINA_{uid.upper()}",
subdomain=f"pina{uid}",
name=f"Pin Store A {uid}",
is_active=True,
is_verified=True,
)
db.add(store_a)
db.commit()
db.refresh(store_a)
store_user = StoreUser(store_id=store_a.id, user_id=owner.id, is_active=True)
db.add(store_user)
db.commit()
sp = StorePlatform(store_id=store_a.id, platform_id=loyalty_platform.id)
db.add(sp)
db.commit()
# Store B (different store)
store_b = Store(
merchant_id=merchant.id,
store_code=f"PINB_{uid.upper()}",
subdomain=f"pinb{uid}",
name=f"Pin Store B {uid}",
is_active=True,
is_verified=True,
)
db.add(store_b)
db.commit()
db.refresh(store_b)
program = LoyaltyProgram(
merchant_id=merchant.id,
loyalty_type=LoyaltyType.POINTS.value,
points_per_euro=10,
cooldown_minutes=0,
max_daily_stamps=10,
require_staff_pin=True,
card_name="Pin Own Card",
card_color="#00FF00",
is_active=True,
)
db.add(program)
db.commit()
db.refresh(program)
# Create PIN on store B
pin_b = StaffPin(
merchant_id=merchant.id,
program_id=program.id,
store_id=store_b.id,
name="Other Store Staff",
)
pin_b.set_pin("5678")
db.add(pin_b)
db.commit()
db.refresh(pin_b)
return {
"owner": owner,
"merchant": merchant,
"store_a": store_a,
"store_b": store_b,
"program": program,
"pin_b": pin_b,
}
@pytest.fixture
def pin_ownership_headers(client, pin_ownership_setup):
"""JWT auth headers for pin ownership setup (logged into store A)."""
owner = pin_ownership_setup["owner"]
response = client.post(
"/api/v1/store/auth/login",
json={"email_or_username": owner.username, "password": "storepass123"},
)
assert response.status_code == 200
token = response.json()["access_token"]
return {"Authorization": f"Bearer {token}"}
@pytest.mark.integration
@pytest.mark.api
@pytest.mark.loyalty
class TestPinOwnershipCheck:
"""Tests for PIN ownership verification (Item 2)."""
def test_update_pin_wrong_store_returns_404(
self, client, pin_ownership_headers, pin_ownership_setup
):
"""Updating a PIN belonging to another store returns 404."""
pin_b = pin_ownership_setup["pin_b"]
response = client.patch(
f"{BASE}/pins/{pin_b.id}",
json={"name": "Hacked Name"},
headers=pin_ownership_headers,
)
assert response.status_code == 404
def test_delete_pin_wrong_store_returns_404(
self, client, pin_ownership_headers, pin_ownership_setup
):
"""Deleting a PIN belonging to another store returns 404."""
pin_b = pin_ownership_setup["pin_b"]
response = client.delete(
f"{BASE}/pins/{pin_b.id}",
headers=pin_ownership_headers,
)
assert response.status_code == 404
def test_unlock_pin_wrong_store_returns_404(
self, client, pin_ownership_headers, pin_ownership_setup
):
"""Unlocking a PIN belonging to another store returns 404."""
pin_b = pin_ownership_setup["pin_b"]
response = client.post(
f"{BASE}/pins/{pin_b.id}/unlock",
headers=pin_ownership_headers,
)
assert response.status_code == 404
# ============================================================================
# Item 3: adjust_points role gate
# ============================================================================
@pytest.fixture
def staff_user_setup(db, loyalty_platform):
"""Setup with a staff user (not merchant_owner) for role gate tests."""
from app.modules.customers.models.customer import Customer
from app.modules.tenancy.models.store import StoreUser
from app.modules.tenancy.models.store_platform import StorePlatform
from middleware.auth import AuthManager
auth = AuthManager()
uid = uuid.uuid4().hex[:8]
# merchant_owner creates the merchant
owner = User(
email=f"adjowner_{uid}@test.com",
username=f"adjowner_{uid}",
hashed_password=auth.hash_password("storepass123"),
role="merchant_owner",
is_active=True,
is_email_verified=True,
)
db.add(owner)
db.commit()
db.refresh(owner)
from app.modules.tenancy.models import Merchant, Store
merchant = Merchant(
name=f"Adjust 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"ADJ_{uid.upper()}",
subdomain=f"adj{uid}",
name=f"Adjust Store {uid}",
is_active=True,
is_verified=True,
)
db.add(store)
db.commit()
db.refresh(store)
# Staff user (not merchant_owner)
staff = User(
email=f"adjstaff_{uid}@test.com",
username=f"adjstaff_{uid}",
hashed_password=auth.hash_password("storepass123"),
role="store_member",
is_active=True,
is_email_verified=True,
)
db.add(staff)
db.commit()
db.refresh(staff)
store_user = StoreUser(store_id=store.id, user_id=staff.id, is_active=True)
db.add(store_user)
db.commit()
sp = StorePlatform(store_id=store.id, platform_id=loyalty_platform.id)
db.add(sp)
db.commit()
customer = Customer(
email=f"adjcust_{uid}@test.com",
first_name="Adj",
last_name="Customer",
hashed_password="!unused!", # noqa: SEC001
customer_number=f"AC-{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.POINTS.value,
points_per_euro=10,
cooldown_minutes=0,
max_daily_stamps=10,
require_staff_pin=False,
card_name="Adjust Card",
card_color="#FF0000",
is_active=True,
)
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"ADJCARD-{uid.upper()}",
points_balance=500,
total_points_earned=500,
is_active=True,
last_activity_at=datetime.now(UTC),
)
db.add(card)
db.commit()
db.refresh(card)
return {
"staff": staff,
"merchant": merchant,
"store": store,
"program": program,
"card": card,
}
@pytest.fixture
def staff_headers(client, staff_user_setup):
"""JWT auth headers for staff user (not merchant_owner)."""
staff = staff_user_setup["staff"]
response = client.post(
"/api/v1/store/auth/login",
json={"email_or_username": staff.username, "password": "storepass123"},
)
assert response.status_code == 200
token = response.json()["access_token"]
return {"Authorization": f"Bearer {token}"}
@pytest.mark.integration
@pytest.mark.api
@pytest.mark.loyalty
class TestAdjustPointsRoleGate:
"""Tests for adjust_points merchant_owner role requirement (Item 3)."""
def test_staff_cannot_adjust_points(
self, client, staff_headers, staff_user_setup
):
"""Staff (non-owner) gets 403 when adjusting points."""
card = staff_user_setup["card"]
response = client.post(
f"{BASE}/cards/{card.id}/points/adjust",
json={"points_delta": 100, "reason": "Staff trying to adjust"},
headers=staff_headers,
)
assert response.status_code == 403
def test_owner_can_adjust_points(
self, client, loyalty_store_headers, loyalty_store_setup
):
"""Merchant owner can adjust points."""
card = loyalty_store_setup["card"]
response = client.post(
f"{BASE}/cards/{card.id}/points/adjust",
json={"points_delta": 50, "reason": "Owner adjustment test"},
headers=loyalty_store_headers,
)
assert response.status_code == 200
data = response.json()
assert data["success"] is True

41
app/modules/loyalty/tests/unit/test_card_service.py
View File

@@ -290,3 +290,44 @@ class TestGetStoreTransactions:
)
assert total >= 3
assert len(transactions) == 2
# ============================================================================
# Item 9: Reactivate card creates audit transaction
# ============================================================================
@pytest.mark.unit
@pytest.mark.loyalty
class TestReactivateCardAudit:
"""Tests for reactivate_card creating CARD_REACTIVATED transaction."""
def setup_method(self):
self.service = CardService()
def test_reactivate_creates_transaction(self, db, test_loyalty_card):
"""Reactivating a card creates a CARD_REACTIVATED transaction."""
# Deactivate first
test_loyalty_card.is_active = False
db.commit()
self.service.reactivate_card(db, test_loyalty_card.id)
tx = (
db.query(LoyaltyTransaction)
.filter(
LoyaltyTransaction.card_id == test_loyalty_card.id,
LoyaltyTransaction.transaction_type == TransactionType.CARD_REACTIVATED.value,
)
.first()
)
assert tx is not None
assert tx.merchant_id == test_loyalty_card.merchant_id
def test_reactivate_sets_card_active(self, db, test_loyalty_card):
"""Reactivating a card sets is_active to True."""
test_loyalty_card.is_active = False
db.commit()
card = self.service.reactivate_card(db, test_loyalty_card.id)
assert card.is_active is True

49
app/modules/loyalty/tests/unit/test_pin_service.py
View File

@@ -233,3 +233,52 @@ class TestVerifyPin:
# Should find the active PIN
result = self.service.verify_pin(db, program.id, "2222", store_id=store.id)
assert result.name == "Active"
# ============================================================================
# Item 11: Merchant-specific PIN lockout settings
# ============================================================================
@pytest.mark.unit
@pytest.mark.loyalty
class TestVerifyPinMerchantSettings:
"""Tests for verify_pin using merchant-specific lockout settings."""
def setup_method(self):
self.service = PinService()
def test_uses_merchant_lockout_attempts(self, db, pin_setup):
"""Failed attempts use merchant settings, not global config."""
from app.modules.loyalty.models import MerchantLoyaltySettings
program = pin_setup["program"]
store = pin_setup["store"]
merchant = pin_setup["merchant"]
# Create merchant settings with low lockout threshold
settings = MerchantLoyaltySettings(
merchant_id=merchant.id,
staff_pin_lockout_attempts=3,
staff_pin_lockout_minutes=60,
)
db.add(settings)
db.commit()
self.service.create_pin(db, program.id, store.id, PinCreate(name="Test", pin="1234"))
# Fail 3 times (merchant setting), should lock
for _ in range(3):
try:
self.service.verify_pin(db, program.id, "9999", store_id=store.id)
except (InvalidStaffPinException, StaffPinLockedException):
pass
# Next attempt should be locked
with pytest.raises((InvalidStaffPinException, StaffPinLockedException)):
self.service.verify_pin(db, program.id, "9999", store_id=store.id)
# Verify the PIN is actually locked
pins = self.service.list_pins(db, program.id, store_id=store.id, is_active=True)
locked_pins = [p for p in pins if p.is_locked]
assert len(locked_pins) >= 1

166
app/modules/loyalty/tests/unit/test_points_service.py
View File

@@ -372,3 +372,169 @@ class TestAdjustPoints:
assert result["success"] is True
assert result["points_balance"] == 0
# ============================================================================
# Item 1: TOCTOU Race Condition (redeem_points checks after lock)
# ============================================================================
@pytest.mark.unit
@pytest.mark.loyalty
class TestRedeemPointsTOCTOU:
"""Verify balance check happens after row lock."""
def setup_method(self):
self.service = PointsService()
def test_redeem_insufficient_after_lock(self, db, points_setup):
"""Balance check uses locked row state, not stale read."""
card = points_setup["card"]
store = points_setup["store"]
# Set balance to exactly the reward cost
card.points_balance = 100
db.commit()
# Should succeed — balance is exactly enough
result = self.service.redeem_points(
db, store_id=store.id, card_id=card.id, reward_id="r1",
)
assert result["success"] is True
assert result["points_balance"] == 0
# Second redemption should fail (balance is now 0 after lock)
with pytest.raises(InsufficientPointsException):
self.service.redeem_points(
db, store_id=store.id, card_id=card.id, reward_id="r1",
)
# ============================================================================
# Item 4: void_points updates total_points_voided
# ============================================================================
@pytest.mark.unit
@pytest.mark.loyalty
class TestVoidPointsTracking:
"""Verify void_points increments total_points_voided."""
def setup_method(self):
self.service = PointsService()
def test_void_updates_total_points_voided(self, db, points_setup):
"""total_points_voided is incremented on void."""
card = points_setup["card"]
store = points_setup["store"]
initial_voided = card.total_points_voided
self.service.void_points(
db, store_id=store.id, card_id=card.id, points_to_void=50,
)
db.refresh(card)
assert card.total_points_voided == initial_voided + 50
def test_void_caps_voided_at_balance(self, db, points_setup):
"""total_points_voided only counts actually voided amount (capped at balance)."""
card = points_setup["card"]
store = points_setup["store"]
# Set balance to 30, try to void 100
card.points_balance = 30
card.total_points_voided = 0
db.commit()
self.service.void_points(
db, store_id=store.id, card_id=card.id, points_to_void=100,
)
db.refresh(card)
assert card.total_points_voided == 30 # Only 30 was available
assert card.points_balance == 0
# ============================================================================
# Item 5: Duplicate order_reference guard
# ============================================================================
@pytest.mark.unit
@pytest.mark.loyalty
class TestEarnPointsIdempotency:
"""Verify duplicate order_reference returns existing result."""
def setup_method(self):
self.service = PointsService()
def test_duplicate_order_reference_returns_existing(self, db, points_setup):
"""Same order_reference returns existing result without double-earning."""
card = points_setup["card"]
store = points_setup["store"]
result1 = self.service.earn_points(
db,
store_id=store.id,
card_id=card.id,
purchase_amount_cents=1000,
order_reference="ORDER-DUP-001",
)
balance_after_first = result1["points_balance"]
result2 = self.service.earn_points(
db,
store_id=store.id,
card_id=card.id,
purchase_amount_cents=1000,
order_reference="ORDER-DUP-001",
)
# Second call should return same points_earned, balance unchanged
assert result2["points_earned"] == result1["points_earned"]
assert result2["points_balance"] == balance_after_first
assert result2["message"] == "Points already earned for this order"
def test_different_order_references_earn_separately(self, db, points_setup):
"""Different order_references earn points independently."""
card = points_setup["card"]
store = points_setup["store"]
result1 = self.service.earn_points(
db,
store_id=store.id,
card_id=card.id,
purchase_amount_cents=1000,
order_reference="ORDER-A",
)
result2 = self.service.earn_points(
db,
store_id=store.id,
card_id=card.id,
purchase_amount_cents=1000,
order_reference="ORDER-B",
)
assert result2["points_balance"] > result1["points_balance"]
assert result2["message"] == "Points earned successfully"
def test_no_order_reference_allows_multiple_earns(self, db, points_setup):
"""Without order_reference, multiple earns are allowed."""
card = points_setup["card"]
store = points_setup["store"]
result1 = self.service.earn_points(
db,
store_id=store.id,
card_id=card.id,
purchase_amount_cents=1000,
)
result2 = self.service.earn_points(
db,
store_id=store.id,
card_id=card.id,
purchase_amount_cents=1000,
)
assert result2["points_balance"] > result1["points_balance"]

32
app/modules/loyalty/tests/unit/test_program_service.py
View File

@@ -236,6 +236,38 @@ class TestCreateProgram:
settings = self.service.get_merchant_settings(db, ps_merchant.id)
assert settings is not None
def test_create_program_with_existing_settings_no_error(self, db, ps_merchant):
"""Creating a program when MerchantLoyaltySettings already exists succeeds (Item 12)."""
from app.modules.loyalty.models import MerchantLoyaltySettings
# Pre-create settings
settings = MerchantLoyaltySettings(merchant_id=ps_merchant.id)
db.add(settings)
db.commit()
# Should not raise IntegrityError
data = ProgramCreate(loyalty_type="points")
program = self.service.create_program(db, ps_merchant.id, data)
assert program is not None
# Should still have exactly one settings row
count = (
db.query(MerchantLoyaltySettings)
.filter(MerchantLoyaltySettings.merchant_id == ps_merchant.id)
.count()
)
assert count == 1
def test_duplicate_program_exception_uses_merchant_id(self, db, ps_program, ps_merchant):
"""LoyaltyProgramAlreadyExistsException message references merchant, not store (Item 6)."""
data = ProgramCreate(loyalty_type="points")
with pytest.raises(LoyaltyProgramAlreadyExistsException) as exc_info:
self.service.create_program(db, ps_merchant.id, data)
assert "Merchant" in str(exc_info.value.message)
assert str(ps_merchant.id) in str(exc_info.value.message)
assert exc_info.value.details["merchant_id"] == ps_merchant.id
# ============================================================================
# Update Operations

104
app/modules/loyalty/tests/unit/test_schemas.py
View File

@@ -3,11 +3,14 @@
from datetime import UTC, datetime
import pytest
from pydantic import ValidationError
from app.modules.loyalty.schemas.card import (
CardEnrollRequest,
TransactionResponse,
)
from app.modules.loyalty.schemas.points import PointsAdjustRequest
from app.modules.loyalty.schemas.program import StorefrontProgramResponse
@pytest.mark.unit
@@ -73,3 +76,104 @@ class TestTransactionResponse:
created_at=now,
)
assert tx.customer_name == "John Doe"
# ============================================================================
# Item 8: PointsAdjustRequest bounds
# ============================================================================
@pytest.mark.unit
@pytest.mark.loyalty
class TestPointsAdjustRequestBounds:
"""Tests for PointsAdjustRequest.points_delta bounds."""
def test_valid_positive_delta(self):
"""Positive delta within bounds is valid."""
req = PointsAdjustRequest(points_delta=100, reason="Bonus for customer")
assert req.points_delta == 100
def test_valid_negative_delta(self):
"""Negative delta within bounds is valid."""
req = PointsAdjustRequest(points_delta=-500, reason="Correction needed")
assert req.points_delta == -500
def test_max_boundary(self):
"""Delta at max boundary (100000) is valid."""
req = PointsAdjustRequest(points_delta=100000, reason="Max allowed delta")
assert req.points_delta == 100000
def test_min_boundary(self):
"""Delta at min boundary (-100000) is valid."""
req = PointsAdjustRequest(points_delta=-100000, reason="Min allowed delta")
assert req.points_delta == -100000
def test_exceeds_max_rejected(self):
"""Delta exceeding 100000 is rejected."""
with pytest.raises(ValidationError):
PointsAdjustRequest(points_delta=100001, reason="Too many points")
def test_exceeds_min_rejected(self):
"""Delta below -100000 is rejected."""
with pytest.raises(ValidationError):
PointsAdjustRequest(points_delta=-100001, reason="Too many negative")
# ============================================================================
# Item 7: StorefrontProgramResponse excludes wallet fields
# ============================================================================
@pytest.mark.unit
@pytest.mark.loyalty
class TestStorefrontProgramResponse:
"""Tests for StorefrontProgramResponse excluding wallet IDs."""
def test_wallet_fields_excluded_from_serialization(self):
"""Wallet integration IDs are excluded from JSON output."""
now = datetime.now(UTC)
response = StorefrontProgramResponse(
id=1,
merchant_id=1,
loyalty_type="points",
stamps_target=10,
stamps_reward_description="Free item",
points_per_euro=10,
cooldown_minutes=15,
max_daily_stamps=5,
require_staff_pin=True,
card_color="#4F46E5",
is_active=True,
created_at=now,
updated_at=now,
)
data = response.model_dump()
assert "google_issuer_id" not in data
assert "google_class_id" not in data
assert "apple_pass_type_id" not in data
def test_non_wallet_fields_present(self):
"""Non-wallet fields are still present."""
now = datetime.now(UTC)
response = StorefrontProgramResponse(
id=1,
merchant_id=1,
loyalty_type="points",
stamps_target=10,
stamps_reward_description="Free item",
points_per_euro=10,
cooldown_minutes=15,
max_daily_stamps=5,
require_staff_pin=True,
card_color="#4F46E5",
is_active=True,
created_at=now,
updated_at=now,
)
data = response.model_dump()
assert data["id"] == 1
assert data["loyalty_type"] == "points"
assert data["points_per_euro"] == 10
assert data["card_color"] == "#4F46E5"

66
app/modules/loyalty/tests/unit/test_stamp_service.py
View File

@@ -285,3 +285,69 @@ class TestVoidStamps:
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)