feat: Add more checkout field constraints

enterprise_access/apps/api/serializers/customer_billing.py

@@ -125,6 +125,10 @@ class CustomerBillingCreateCheckoutSessionValidationFailedResponseSerializer(ser
         required=False,
         help_text='Validation results for stripe_price_id if validation failed. Absent otherwise.',
     )
+    company_name = FieldValidationSerializer(
+        required=False,
+        help_text='Validation results for company_name if validation failed. Absent otherwise.',
+    )
     errors = UnprocessableEntityErrorSerializer(
         required=False,
         many=True,

enterprise_access/apps/bffs/checkout/handlers.py

@@ -207,15 +207,32 @@ def _get_field_constraints(self) -> Dict:
                 min_val, max_val = product_config['quantity_range']
                 quantity_constraints = {'min': min_val, 'max': max_val}
                 break
-
         return {
             'quantity': quantity_constraints,
             'enterprise_slug': {
-                'min_length': 3,
-                'max_length': 30,
+                'min_length': 1,
+                'max_length': 255,
                 'pattern': '^[a-z0-9-]+$'
             },
-            'embargoed_countries': get_embargoed_countries()
+            'embargoed_countries': get_embargoed_countries(),
+            'full_name': {
+                'min_length': 1,
+                'max_length': 150,
+            },
+            'admin_email': {
+                'min_length': 6,
+                'max_length': 253,
+                'pattern': '^[^\\s@]+@[^\\s@]+\\.[^\\s@]+$',  # enforce the format of [email protected] without spaces
+            },
+            'country': {
+                'min_length': 2,
+                'max_length': 2,
+                'pattern': '^[A-Z]{2}$'
+            },
+            'company_name': {
+                'min_length': 1,
+                'max_length': 255,
+            }
         }
 
 

enterprise_access/apps/bffs/tests/test_checkout_handlers.py

@@ -2,6 +2,7 @@
 Tests for Checkout BFF handlers.
 """
 import random
+import re
 from datetime import datetime
 from decimal import Decimal
 from unittest import mock
@@ -224,6 +225,43 @@ def test_get_field_constraints_includes_embargoed_countries(self):
         self.assertIsInstance(constraints['embargoed_countries'], list)
         self.assertEqual(constraints['embargoed_countries'], ['RU', 'IR', 'KP', 'SY', 'CU'])
 
+    @ddt.data(
+        {
+            'constraint_name': 'enterprise_slug',
+            'should_match': ['valid-slug', '123', '0kay-slug'],
+            'should_not_match': ['Capitalization-fail', 'b&d-symbol', '/-and-burn']
+        },
+        {
+            'constraint_name': 'admin_email',
+            'should_match': ['[email protected]', '[email protected]'],
+            'should_not_match': ['notanemail', 'too@[email protected]', 'forbidden [email protected]']
+        },
+        {
+            'constraint_name': 'country',
+            'should_match': ['US', 'CN'],
+            'should_not_match': ['us', 'CANADA']
+        },
+    )
+    @ddt.unpack
+    def test_get_field_constraints_regexes(self, constraint_name, should_match, should_not_match):
+        """
+        Test that _get_field_constraints includes embargoed countries list.
+        """
+        context = self._create_context()
+        handler = CheckoutContextHandler(context)
+
+        constraints = handler._get_field_constraints()
+
+        self.assertIn(constraint_name, constraints)
+        constraint_definition = constraints[constraint_name]
+        self.assertIn('pattern', constraint_definition)
+        pattern = constraint_definition['pattern']
+
+        for str in should_match:
+            self.assertTrue(re.match(pattern, str))
+        for str in should_not_match:
+            self.assertFalse(re.match(pattern, str))
+
     @mock.patch('enterprise_access.apps.bffs.checkout.handlers.get_ssp_product_pricing')
     def test_handler_adds_error_on_pricing_failure(self, mock_get_pricing):
         """

requirements/common_constraints.txt

@@ -26,3 +26,5 @@ elasticsearch<7.14.0
 # The constraint can be removed once a release (pip-tools > 7.5.1) is available with support for pip 25.3
 # Issue to track this dependency and unpin later on: https://github.com/openedx/edx-lint/issues/503
 pip<25.3
+
+pip-tools>=7.4.0