[fix] Invalid Fields structure

CHANGELOG.md

@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## Next Release
+
+- Fix `Fields` serialization bug causing carrier account operations to fail
+
 ## v7.2.0 (2024-04-10)
 
 - Adds `refund` function in Insurance service for requesting a refund for a standalone insurance

src/main/java/com/easypost/model/CarrierAccount.java

@@ -8,6 +8,7 @@ public final class CarrierAccount extends EasyPostResource {
     private String type;
     private Fields fields;
     private boolean clone;
+    private String logo;
     private String readable;
     private String description;
     private String reference;

src/main/java/com/easypost/model/Field.java

@@ -4,7 +4,6 @@
 
 @Getter
 public class Field extends EasyPostResource {
-    private String key;
     private String visibility;
     private String label;
     private String value;

src/main/java/com/easypost/model/Fields.java

@@ -2,6 +2,12 @@
 
 import lombok.Getter;
 
+import java.util.Map;
+
 @Getter
 public class Fields extends EasyPostResource {
+    private Map<String, Field> credentials;
+    private Map<String, Field> testCredentials;
+    private boolean autoLink;
+    private boolean customWorkflow;
 }

src/test/java/com/easypost/BillingTest.java

@@ -25,15 +25,6 @@ public final class BillingTest {
             "ll,\"last4\":\"4444\",\"exp_month\":1,\"exp_year\":2025,\"brand\":\"Mastercard\"}}";
     private PaymentMethod paymentMethod = Constants.Http.GSON.fromJson(jsonResponse, PaymentMethod.class);
 
-    private String jsonResponseLegacyPrefixes = "{\"id\":\"cust_...\",\"object\":\"PaymentMethods\",\"primary_" +
-            "payment_method\":{\"id\":\"card_...\",\"disabled_at\":null,\"object\":null,\"na" +
-            "me\":null,\"last4\":\"4242\",\"exp_month\":1,\"exp_year\":2025,\"brand\":\"Visa\"},\"secondar" +
-            "y_payment_method\":{\"id\":\"bank_...\",\"disabled_at\":null,\"object\":null,\"name\":nu" +
-            "ll,\"last4\":\"4444\",\"exp_month\":1,\"exp_year\":2025,\"brand\":\"Mastercard\"}}";
-
-    private PaymentMethod paymentMethodLegacyPrefixes =
-            Constants.Http.GSON.fromJson(jsonResponseLegacyPrefixes, PaymentMethod.class);
-
     private static MockedStatic<Requestor> requestMock = Mockito.mockStatic(Requestor.class);
 
     /**

src/test/java/com/easypost/CarrierAccountTest.java

@@ -2,12 +2,17 @@
 
 import com.easypost.exception.API.InvalidRequestError;
 import com.easypost.exception.EasyPostException;
+import com.easypost.http.Requestor;
 import com.easypost.model.CarrierAccount;
 import com.easypost.model.CarrierType;
+import com.easypost.model.Pickup;
+import com.easypost.model.Shipment;
 import com.google.common.collect.ImmutableMap;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
+import org.mockito.MockedStatic;
+import org.mockito.Mockito;
 
 import java.util.HashMap;
 import java.util.List;
@@ -23,6 +28,8 @@ public final class CarrierAccountTest {
 
     private static TestUtils.VCR vcr;
 
+    private static MockedStatic<Requestor> requestMock = Mockito.mockStatic(Requestor.class);
+
     /**
      * Set up the testing environment for this file.
      *
@@ -179,4 +186,58 @@ public void testTypes() throws EasyPostException {
         assertInstanceOf(List.class, types);
         assertTrue(types.stream().allMatch(type -> type != null));
     }
+
+    /**
+     * Test that the CarrierAccount fields are correctly deserialized from the API response.
+     * None of the demo carrier accounts used in the above tests have credentials or test credentials fields,
+     * so we need to use some mock data.
+     */
+    @Test
+    public void testCarrierFieldsJsonDeserialization() {
+        String carrierAccountJson = "[{\"id\":\"ca_123\",\"object\":\"CarrierAccount\"," +
+                "\"fields\":{\"credentials\":{\"account_number\":{\"visibility\":\"visible\"," +
+                "\"label\":\"DHL Account Number\",\"value\":\"123456\"},\"country\":{\"visibility\":\"visible\"," +
+                "\"label\":\"Account Country Code (2 Letter)\",\"value\":\"US\"},\"site_id\":{\"visibility\":" +
+                "\"visible\",\"label\":\"Site ID (Optional)\",\"value\": null },\"password\":{\"visibility\":" +
+                "\"password\",\"label\":\"Password (Optional)\",\"value\":\"\"},\"is_reseller\":{\"visibility\":" +
+                "\"checkbox\",\"label\":\"Reseller Account? (check if yes)\",\"value\":null}}}}]";
+        CarrierAccount[] carrierAccounts = Constants.Http.GSON.fromJson(carrierAccountJson, CarrierAccount[].class);
+
+        CarrierAccount carrierAccount = carrierAccounts[0];
+        assertEquals("ca_123", carrierAccount.getId());
+        assertEquals("CarrierAccount", carrierAccount.getObject());
+        assertEquals("DHL Account Number",
+                carrierAccount.getFields().getCredentials().get("account_number").getLabel());
+    }
+
+    /**
+     * Test that the CarrierAccount fields are correctly serialized to the API request.
+     */
+    @Test
+    public void testCarrierFieldsJsonSerialization() {
+        String carrierAccountJson = "[{\"id\":\"ca_123\",\"object\":\"CarrierAccount\",\"fields\":{\"credentials\":" +
+                "{\"account_number\":{\"visibility\":\"visible\",\"label\":\"DHL Account Number\"," +
+                "\"value\":\"123456\"},\"country\":{\"visibility\":\"visible\",\"label\":" +
+                "\"Account Country Code (2 Letter)\",\"value\":\"US\"},\"site_id\":{\"visibility\":\"visible\"," +
+                "\"label\":\"Site ID (Optional)\",\"value\": null },\"password\":{\"visibility\":\"password\"," +
+                "\"label\":\"Password (Optional)\",\"value\":\"\"},\"is_reseller\":{\"visibility\":\"checkbox\"," +
+                "\"label\":\"Reseller Account? (check if yes)\",\"value\":null}}}}]";
+        CarrierAccount[] carrierAccounts = Constants.Http.GSON.fromJson(carrierAccountJson, CarrierAccount[].class);
+        CarrierAccount carrierAccount = carrierAccounts[0];
+
+        // Prepare a parameter set for creating a pickup, using the carrier account object
+        Map<String, Object> pickupData = Fixtures.basicPickup();
+        pickupData.put("shipment", new Shipment());
+        pickupData.put("carrier_accounts", new CarrierAccount[] { carrierAccount });
+
+        // Avoid making a real request to the API, interested in pre-request serialization, not interested in response
+        requestMock.when(() -> Requestor.request(Requestor.RequestMethod.POST, "pickups", pickupData, Shipment.class,
+                vcr.client)).thenReturn(new Pickup());
+
+        // This will throw an exception if the carrier account fields could not be serialized properly
+        assertDoesNotThrow(() -> vcr.client.pickup.create(pickupData));
+
+        // Close mock
+        requestMock.close();
+    }
 }