diff --git a/src/__tests__/mocks/resources/customer-portal-sessions.mock.ts b/src/__tests__/mocks/resources/customer-portal-sessions.mock.ts
index 9a65f72..841a8a4 100644
--- a/src/__tests__/mocks/resources/customer-portal-sessions.mock.ts
+++ b/src/__tests__/mocks/resources/customer-portal-sessions.mock.ts
@@ -34,4 +34,3 @@ export const CustomerPortalSessionMockResponse: Response<ICustomerPortalSessionR
     request_id: '',
   },
 };
-
diff --git a/src/__tests__/resources/customer-portal-sessions.test.ts b/src/__tests__/resources/customer-portal-sessions.test.ts
index 71429c3..888cb0c 100644
--- a/src/__tests__/resources/customer-portal-sessions.test.ts
+++ b/src/__tests__/resources/customer-portal-sessions.test.ts
@@ -27,5 +27,6 @@ describe('CustomerPortalSessionsResource', () => {
     expect(createdCustomerPortalSession).toBeDefined();
     expect(createdCustomerPortalSession.id).toBeDefined();
     expect(createdCustomerPortalSession.customerId).toBe(customerId);
+    expect(createdCustomerPortalSession.urls.subscriptions[0].id).toBe(subscriptionIds[0]);
   });
 });