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Revert changes for getting enterprise customer from enteprise from
Enterprise API and update/add test.
Lookup the enterprise_customer_uuid based on the site and user if not
found through the cookie or request parameter.

openedx/features/enterprise_support/api.py

@@ -364,6 +364,13 @@ def enterprise_customer_for_request(request):
             settings.ENTERPRISE_CUSTOMER_COOKIE_NAME
         )
 
+    if not enterprise_customer_uuid and request.user.is_authenticated():
+        # If there's no way to get an Enterprise UUID for the request, check to see
+        # if there's already an Enterprise attached to the requesting user on the backend.
+        learner_data = get_enterprise_learner_data(request.site, request.user)
+        if learner_data:
+            enterprise_customer_uuid = learner_data[0]['enterprise_customer']['uuid']
+
     if enterprise_customer_uuid:
         # If we were able to obtain an EnterpriseCustomer UUID, go ahead
         # and use it to attempt to retrieve EnterpriseCustomer details

openedx/features/enterprise_support/tests/test_api.py

@@ -171,6 +171,7 @@ class TestEnterpriseApi(EnterpriseServiceMockMixin, CacheIsolationTestCase):
         self.assertFalse(consent_needed_for_course(request, user, 'fake-course'))
 
     @httpretty.activate
+    @mock.patch('openedx.features.enterprise_support.api.get_enterprise_learner_data')
     @mock.patch('openedx.features.enterprise_support.api.EnterpriseCustomer')
     @mock.patch('openedx.features.enterprise_support.api.get_partial_pipeline')
     @mock.patch('openedx.features.enterprise_support.api.Registry')
@@ -179,6 +180,7 @@ class TestEnterpriseApi(EnterpriseServiceMockMixin, CacheIsolationTestCase):
             mock_registry,
             mock_partial,
             mock_enterprise_customer_model,
+            mock_get_enterprise_learner_data,
     ):
         def mock_get_enterprise_customer(**kwargs):
             uuid = kwargs.get('enterprise_customer_identity_provider__provider_id')
@@ -227,6 +229,16 @@ class TestEnterpriseApi(EnterpriseServiceMockMixin, CacheIsolationTestCase):
         )
         self.assertEqual(enterprise_customer, {'real': 'enterprisecustomer'})
 
+        # Verify that we can still get enterprise customer from enterprise
+        # learner API even if we are unable to get it from preferred sources,
+        # e.g. url query parameters, third-party auth pipeline, enterprise
+        # cookie.
+        mock_get_enterprise_learner_data.return_value = [{'enterprise_customer': {'uuid': 'real-ent-uuid'}}]
+        enterprise_customer = enterprise_customer_for_request(
+            mock.MagicMock(GET={}, COOKIES={}, user=self.user, site=1)
+        )
+        self.assertEqual(enterprise_customer, {'real': 'enterprisecustomer'})
+
     def check_data_sharing_consent(self, consent_required=False, consent_url=None):
         """
         Used to test the data_sharing_consent_required view decorator.