added CardInfoType serializer/deserializer

src/main/java/com/mangopay/MangoPayApi.java

@@ -6,6 +6,9 @@
 import com.mangopay.core.APIs.implementation.*;
 import com.mangopay.core.AuthorizationTokenManager;
 import com.mangopay.core.Configuration;
+import com.mangopay.core.deserializer.CardInfoTypeDeserializer;
+import com.mangopay.core.enumerations.CardInfoType;
+import com.mangopay.core.serializer.CardInfoTypeSerializer;
 import com.mangopay.entities.RateLimit;
 
 import java.util.List;
@@ -55,6 +58,11 @@ public MangoPayApi() {
         setVirtualAccountApi(new VirtualAccountApiImpl(this));
         setConversionsApi(new ConversionsApiImpl(this, gsonBuilder));
         setIdentityVerificationApi(new IdentityVerificationApiImpl(this));
+
+        // register custom serializers/deserializers for objects that are used in multiple APIs
+        gsonBuilder.registerTypeAdapter(CardInfoType.class, new CardInfoTypeSerializer());
+        gsonBuilder.registerTypeAdapter(CardInfoType.class, new CardInfoTypeDeserializer());
+
         setGson(gsonBuilder.create());
     }
 

src/main/java/com/mangopay/core/deserializer/CardInfoTypeDeserializer.java

@@ -0,0 +1,20 @@
+package com.mangopay.core.deserializer;
+
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParseException;
+import com.mangopay.core.enumerations.CardInfoType;
+
+import java.lang.reflect.Type;
+
+public class CardInfoTypeDeserializer implements JsonDeserializer<CardInfoType> {
+    @Override
+    public CardInfoType deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
+        String value = json.getAsString();
+        if ("CHARGE CARD".equals(value)) {
+            return CardInfoType.CHARGE_CARD;
+        }
+        return CardInfoType.valueOf(value);
+    }
+}

src/main/java/com/mangopay/core/serializer/CardInfoTypeSerializer.java

@@ -0,0 +1,19 @@
+package com.mangopay.core.serializer;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonPrimitive;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+import com.mangopay.core.enumerations.CardInfoType;
+
+import java.lang.reflect.Type;
+
+public class CardInfoTypeSerializer implements JsonSerializer<CardInfoType> {
+    @Override
+    public JsonElement serialize(CardInfoType src, Type typeOfSrc, JsonSerializationContext context) {
+        if (src == CardInfoType.CHARGE_CARD) {
+            return new JsonPrimitive("CHARGE CARD");
+        }
+        return new JsonPrimitive(src.name());
+    }
+}

src/test/java/com/mangopay/entities/GsonTest.java

@@ -0,0 +1,32 @@
+package com.mangopay.entities;
+
+import com.mangopay.core.BaseTest;
+import com.mangopay.core.enumerations.CardInfoType;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+public class GsonTest extends BaseTest {
+    @Test
+    public void testSerializeCardInfoType() {
+        CardInfoType type = CardInfoType.CHARGE_CARD;
+        String json = getApi().getGson().toJson(type);
+        assertEquals("\"CHARGE CARD\"", json);
+
+        type = null;
+        json = getApi().getGson().toJson(type);
+        assertEquals("null", json);
+    }
+
+    @Test
+    public void testDeserializeCardInfoType() {
+        String jsonInput = "\"CHARGE CARD\"";
+        CardInfoType deserialized = getApi().getGson().fromJson(jsonInput, CardInfoType.class);
+        assertEquals(CardInfoType.CHARGE_CARD, deserialized);
+
+        jsonInput = "null";
+        deserialized = getApi().getGson().fromJson(jsonInput, CardInfoType.class);
+        assertNull(deserialized);
+    }
+}