Create test_cancelevent_structure.py

src/tests/base/test_cancelevent_structure.py

@@ -0,0 +1,362 @@
+from datetime import datetime, timedelta
+from decimal import Decimal
+import json
+from unittest.mock import patch
+
+from django.conf import settings
+from django.core import mail as djmail
+from django.test import TestCase, override_settings
+from django.utils.timezone import now
+from django_scopes import scope
+import pytz
+
+from pretix.base.models import (
+    Event, Item, ItemVariation, Order, OrderPosition, Organizer,
+    Voucher, WaitingListEntry, SubEvent, Tax, LogEntry,
+    GiftCard, Customer, TeamAPIToken
+)
+from pretix.base.models.orders import (
+    OrderFee, OrderPayment, OrderRefund, 
+    OrderPaymentProvider, Transaction
+)
+from pretix.base.payment import PaymentException
+from pretix.base.services.cancelevent import (
+    cancel_event, EventCancellationException,
+    CancellationRule, RefundStrategy
+)
+from pretix.base.services.invoices import generate_invoice
+from pretix.base.services.notifications import notify
+from pretix.testutils.scope import classscope
+from pretix.base.services.cancelevent import (
+    cancel_event, EventCancellationException,
+    CancellationRule, RefundStrategy,
+    CancellationRuleException
+)
+
+class EventCancelBaseTestCase(TestCase):
+    """Base class with common setup for cancellation tests"""
+
+    def setUp(self):
+        # ... base setup code ...
+
+class EventCancelPaymentTests(EventCancelBaseTestCase):
+    """Tests focusing on payment and refund handling"""
+
+    def test_stripe_refund(self):
+        """Test refund via Stripe payment provider"""
+
+    def test_paypal_refund(self):
+        """Test refund via PayPal"""
+
+    def test_mixed_payment_methods(self):
+        """Test order paid with multiple payment methods"""
+
+    def test_partial_payments(self):
+        """Test cancellation with partial payments"""
+
+class EventCancelFeeTests(EventCancelBaseTestCase):
+    """Tests for fee calculation and retention"""
+
+    def test_percentage_fee(self):
+        """Test percentage-based cancellation fee"""
+
+    def test_fixed_fee(self):
+        """Test fixed cancellation fee"""
+
+    def test_per_ticket_fee(self):
+        """Test per-ticket cancellation fee"""
+
+    def test_tax_handling(self):
+        """Test tax calculations on fees"""
+
+class EventCancelNotificationTests(EventCancelBaseTestCase):
+    """Tests for notification handling"""
+
+    def test_email_templates(self):
+        """Test email template rendering"""
+
+    def test_notification_queuing(self):
+        """Test notification queue system"""
+
+    def test_bulk_notifications(self):
+        """Test bulk notification handling"""
+
+class EventCancelVoucherTests(EventCancelBaseTestCase):
+    """Tests for voucher handling"""
+
+    def test_voucher_reactivation(self):
+        """Test voucher reactivation"""
+
+    def test_special_vouchers(self):
+        """Test special voucher types"""
+
+class SubEventCancelTests(EventCancelBaseTestCase):
+    """Tests for subevent cancellation"""
+
+    def test_series_cancellation(self):
+        """Test cancelling event series"""
+
+    def test_date_range_cancel(self):
+        """Test cancelling date range"""
+
+    def test_timezone_handling(self):
+        """Test timezone-specific scenarios"""
+
+class EventCancelAPITests(EventCancelBaseTestCase):
+    """Tests for API endpoints"""
+
+    def test_api_cancel(self):
+        """Test API cancellation endpoint"""
+
+    def test_api_permissions(self):
+        """Test API permission checks"""
+
+class EventCancelInternationalTests(EventCancelBaseTestCase):
+    """Tests for international scenarios"""
+
+    def test_multi_currency(self):
+        """Test multi-currency handling"""
+
+    def test_international_formatting(self):
+        """Test international format handling"""
+
+class EventCancelEdgeCaseTests(EventCancelBaseTestCase):
+    """Tests for edge cases and error conditions"""
+
+    def test_network_failure(self):
+        """Test network failure handling"""
+
+    def test_partial_failure(self):
+        """Test partial cancellation failure"""
+
+    def test_concurrent_modifications(self):
+        """Test concurrent modification handling"""
+
+class EventCancelAuditTests(EventCancelBaseTestCase):
+    """Tests for audit logging"""
+
+    def test_log_entries(self):
+        """Test audit log creation"""
+
+    def test_change_tracking(self):
+        """Test change tracking"""
+
+class CancellationRuleTests(EventCancelBaseTestCase):
+    """Tests for cancellation rules and strategies"""
+
+    def test_percentage_rule(self):
+        """Test percentage-based cancellation rule"""
+        rule = CancellationRule(
+            percentage=Decimal('10.00'),
+            fixed_amount=Decimal('0.00'),
+            per_ticket_amount=Decimal('0.00')
+        )
+
+        self._create_paid_order()
+        original_amount = self.order.total
+
+        calculated_fee = rule.calculate_fee(self.order)
+        expected_fee = original_amount * Decimal('0.10')
+
+        self.assertEqual(calculated_fee, expected_fee)
+        self.assertEqual(rule.get_refund_amount(self.order), original_amount - expected_fee)
+
+    def test_fixed_rule_with_tax(self):
+        """Test fixed amount rule with tax considerations"""
+        rule = CancellationRule(
+            percentage=Decimal('0.00'),
+            fixed_amount=Decimal('50.00'),
+            per_ticket_amount=Decimal('0.00'),
+            include_tax=True
+        )
+
+        # Create order with specific tax rate
+        self.order.fees.create(
+            fee_type=OrderFee.FEE_TYPE_TAX,
+            value=Decimal('19.00'),
+            tax_rate=Decimal('19.00')
+        )
+
+        calculated_fee = rule.calculate_fee(self.order)
+        self.assertEqual(calculated_fee, Decimal('50.00'))
+        # Verify tax calculation
+        self.assertEqual(
+            rule.calculate_tax_amount(calculated_fee),
+            Decimal('7.98')  # 19% of 50/(1+19%)
+        )
+
+    def test_combined_rule_strategy(self):
+        """Test combination of different rule types with refund strategy"""
+        rule = CancellationRule(
+            percentage=Decimal('5.00'),
+            fixed_amount=Decimal('10.00'),
+            per_ticket_amount=Decimal('2.00')
+        )
+        strategy = RefundStrategy(
+            rule=rule,
+            auto_refund=True,
+            refund_as_giftcard=False
+        )
+
+        self._create_paid_order()
+        original_amount = self.order.total
+        num_tickets = self.order.positions.count()
+
+        # Calculate expected fees
+        expected_percentage_fee = original_amount * Decimal('0.05')
+        expected_fixed_fee = Decimal('10.00')
+        expected_ticket_fee = Decimal('2.00') * num_tickets
+        total_expected_fee = expected_percentage_fee + expected_fixed_fee + expected_ticket_fee
+
+        calculated_fee = rule.calculate_fee(self.order)
+        self.assertEqual(calculated_fee, total_expected_fee)
+
+        # Test strategy application
+        refund_amount = strategy.calculate_refund_amount(self.order)
+        self.assertEqual(refund_amount, original_amount - total_expected_fee)
+
+class EnhancedEdgeCaseTests(EventCancelBaseTestCase):
+    """Enhanced tests for edge cases and error conditions"""
+
+    def test_invalid_payment_credentials(self):
+        """Test cancellation with invalid payment provider credentials"""
+        self._create_paid_order('stripe')
+
+        with patch('pretix.base.payment.stripe.Stripe.execute_refund') as mock_refund:
+            mock_refund.side_effect = PaymentException("Invalid API key")
+
+            with self.assertRaises(EventCancellationException) as ctx:
+                cancel_event(
+                    self.event.pk,
+                    subevent=None,
+                    auto_refund=True,
+                    keep_fee_fixed="0.00",
+                    keep_fee_percentage="0.00",
+                    send=False
+                )
+
+            self.assertIn("Invalid API key", str(ctx.exception))
+            self.order.refresh_from_db()
+            self.assertNotEqual(self.order.status, Order.STATUS_CANCELED)
+
+    def test_refund_exceeds_limit(self):
+        """Test refund amount exceeding provider limits"""
+        # Set up order with amount exceeding typical limits
+        self.order.total = Decimal('50000.00')  # Assuming 50k is above some provider limits
+        self.order.save()
+        self._create_paid_order('stripe')
+
+        with patch('pretix.base.payment.stripe.Stripe.execute_refund') as mock_refund:
+            mock_refund.side_effect = PaymentException("Refund amount exceeds limit")
+
+            with self.assertRaises(EventCancellationException):
+                cancel_event(
+                    self.event.pk,
+                    subevent=None,
+                    auto_refund=True,
+                    keep_fee_fixed="0.00",
+                    keep_fee_percentage="0.00",
+                    send=False
+                )
+
+    @patch('django.db.transaction.atomic')
+    def test_database_error_during_refund(self, mock_transaction):
+        """Test database errors during refund processing"""
+        self._create_paid_order()
+        mock_transaction.side_effect = DatabaseError("Lock timeout")
+
+        with self.assertRaises(EventCancellationException):
+            cancel_event(
+                self.event.pk,
+                subevent=None,
+                auto_refund=True,
+                keep_fee_fixed="0.00",
+                keep_fee_percentage="0.00",
+                send=False
+            )
+
+    def test_complex_event_setup(self):
+        """Test cancellation with complex event setup"""
+        # Create multiple items with variations
+        for i in range(3):
+            item = Item.objects.create(
+                event=self.event,
+                name=f'Complex Item {i}',
+                default_price=Decimal('50.00'),
+                admission=True
+            )
+            # Add variations
+            for j in range(2):
+                variation = ItemVariation.objects.create(
+                    item=item,
+                    value=f'Variation {j}'
+                )
+                # Create order position with this variation
+                OrderPosition.objects.create(
+                    order=self.order,
+                    item=item,
+                    variation=variation,
+                    price=Decimal('50.00')
+                )
+
+        self._create_paid_order()
+
+        # Test cancellation with complex setup
+        cancel_event(
+            self.event.pk,
+            subevent=None,
+            auto_refund=True,
+            keep_fee_fixed="0.00",
+            keep_fee_percentage="0.00",
+            send=False
+        )
+
+        self.order.refresh_from_db()
+        self.assertEqual(self.order.status, Order.STATUS_CANCELED)
+        # Verify all positions are properly canceled
+        for position in self.order.positions.all():
+            self.assertTrue(position.canceled)
+
+    def test_external_service_failures(self):
+        """Test handling of external service failures"""
+        self._create_paid_order()
+
+        # Test email service failure
+        with patch('django.core.mail.EmailMessage.send') as mock_email:
+            mock_email.side_effect = Exception("SMTP failure")
+
+            # Should complete cancellation despite email failure
+            cancel_event(
+                self.event.pk,
+                subevent=None,
+                auto_refund=True,
+                keep_fee_fixed="0.00",
+                keep_fee_percentage="0.00",
+                send=True,
+                send_subject="Test",
+                send_message="Test"
+            )
+
+            self.order.refresh_from_db()
+            self.assertEqual(self.order.status, Order.STATUS_CANCELED)
+
+    def test_concurrent_modifications(self):
+        """Test handling of concurrent modifications"""
+        self._create_paid_order()
+
+        # Simulate concurrent modification
+        with patch('django.db.transaction.atomic') as mock_transaction:
+            mock_transaction.side_effect = TransactionManagementError("Concurrent modification")
+
+            with self.assertRaises(EventCancellationException):
+                cancel_event(
+                    self.event.pk,
+                    subevent=None,
+                    auto_refund=True,
+                    keep_fee_fixed="0.00",
+                    keep_fee_percentage="0.00",
+                    send=False
+                )
+
+
+# more test classes for specific scenarios