| /* |
| * Copyright (C) 2011 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.google.gson.typeadapters; |
| |
| import com.google.gson.Gson; |
| import com.google.gson.GsonBuilder; |
| import com.google.gson.JsonParseException; |
| import com.google.gson.TypeAdapterFactory; |
| import junit.framework.TestCase; |
| |
| public final class RuntimeTypeAdapterFactoryTest extends TestCase { |
| |
| public void testRuntimeTypeAdapter() { |
| RuntimeTypeAdapterFactory<BillingInstrument> rta = RuntimeTypeAdapterFactory.of( |
| BillingInstrument.class) |
| .registerSubtype(CreditCard.class); |
| Gson gson = new GsonBuilder() |
| .registerTypeAdapterFactory(rta) |
| .create(); |
| |
| CreditCard original = new CreditCard("Jesse", 234); |
| assertEquals("{\"type\":\"CreditCard\",\"cvv\":234,\"ownerName\":\"Jesse\"}", |
| gson.toJson(original, BillingInstrument.class)); |
| BillingInstrument deserialized = gson.fromJson( |
| "{type:'CreditCard',cvv:234,ownerName:'Jesse'}", BillingInstrument.class); |
| assertEquals("Jesse", deserialized.ownerName); |
| assertTrue(deserialized instanceof CreditCard); |
| } |
| |
| public void testRuntimeTypeIsBaseType() { |
| TypeAdapterFactory rta = RuntimeTypeAdapterFactory.of( |
| BillingInstrument.class) |
| .registerSubtype(BillingInstrument.class); |
| Gson gson = new GsonBuilder() |
| .registerTypeAdapterFactory(rta) |
| .create(); |
| |
| BillingInstrument original = new BillingInstrument("Jesse"); |
| assertEquals("{\"type\":\"BillingInstrument\",\"ownerName\":\"Jesse\"}", |
| gson.toJson(original, BillingInstrument.class)); |
| BillingInstrument deserialized = gson.fromJson( |
| "{type:'BillingInstrument',ownerName:'Jesse'}", BillingInstrument.class); |
| assertEquals("Jesse", deserialized.ownerName); |
| } |
| |
| public void testNullBaseType() { |
| try { |
| RuntimeTypeAdapterFactory.of(null); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| public void testNullTypeFieldName() { |
| try { |
| RuntimeTypeAdapterFactory.of(BillingInstrument.class, null); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| public void testNullSubtype() { |
| RuntimeTypeAdapterFactory<BillingInstrument> rta = RuntimeTypeAdapterFactory.of( |
| BillingInstrument.class); |
| try { |
| rta.registerSubtype(null); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| public void testNullLabel() { |
| RuntimeTypeAdapterFactory<BillingInstrument> rta = RuntimeTypeAdapterFactory.of( |
| BillingInstrument.class); |
| try { |
| rta.registerSubtype(CreditCard.class, null); |
| fail(); |
| } catch (NullPointerException expected) { |
| } |
| } |
| |
| public void testDuplicateSubtype() { |
| RuntimeTypeAdapterFactory<BillingInstrument> rta = RuntimeTypeAdapterFactory.of( |
| BillingInstrument.class); |
| rta.registerSubtype(CreditCard.class, "CC"); |
| try { |
| rta.registerSubtype(CreditCard.class, "Visa"); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| } |
| } |
| |
| public void testDuplicateLabel() { |
| RuntimeTypeAdapterFactory<BillingInstrument> rta = RuntimeTypeAdapterFactory.of( |
| BillingInstrument.class); |
| rta.registerSubtype(CreditCard.class, "CC"); |
| try { |
| rta.registerSubtype(BankTransfer.class, "CC"); |
| fail(); |
| } catch (IllegalArgumentException expected) { |
| } |
| } |
| |
| public void testDeserializeMissingTypeField() { |
| TypeAdapterFactory billingAdapter = RuntimeTypeAdapterFactory.of(BillingInstrument.class) |
| .registerSubtype(CreditCard.class); |
| Gson gson = new GsonBuilder() |
| .registerTypeAdapterFactory(billingAdapter) |
| .create(); |
| try { |
| gson.fromJson("{ownerName:'Jesse'}", BillingInstrument.class); |
| fail(); |
| } catch (JsonParseException expected) { |
| } |
| } |
| |
| public void testDeserializeMissingSubtype() { |
| TypeAdapterFactory billingAdapter = RuntimeTypeAdapterFactory.of(BillingInstrument.class) |
| .registerSubtype(BankTransfer.class); |
| Gson gson = new GsonBuilder() |
| .registerTypeAdapterFactory(billingAdapter) |
| .create(); |
| try { |
| gson.fromJson("{type:'CreditCard',ownerName:'Jesse'}", BillingInstrument.class); |
| fail(); |
| } catch (JsonParseException expected) { |
| } |
| } |
| |
| public void testSerializeMissingSubtype() { |
| TypeAdapterFactory billingAdapter = RuntimeTypeAdapterFactory.of(BillingInstrument.class) |
| .registerSubtype(BankTransfer.class); |
| Gson gson = new GsonBuilder() |
| .registerTypeAdapterFactory(billingAdapter) |
| .create(); |
| try { |
| gson.toJson(new CreditCard("Jesse", 456), BillingInstrument.class); |
| fail(); |
| } catch (JsonParseException expected) { |
| } |
| } |
| |
| public void testSerializeCollidingTypeFieldName() { |
| TypeAdapterFactory billingAdapter = RuntimeTypeAdapterFactory.of(BillingInstrument.class, "cvv") |
| .registerSubtype(CreditCard.class); |
| Gson gson = new GsonBuilder() |
| .registerTypeAdapterFactory(billingAdapter) |
| .create(); |
| try { |
| gson.toJson(new CreditCard("Jesse", 456), BillingInstrument.class); |
| fail(); |
| } catch (JsonParseException expected) { |
| } |
| } |
| |
| static class BillingInstrument { |
| private final String ownerName; |
| BillingInstrument(String ownerName) { |
| this.ownerName = ownerName; |
| } |
| } |
| |
| static class CreditCard extends BillingInstrument { |
| int cvv; |
| CreditCard(String ownerName, int cvv) { |
| super(ownerName); |
| this.cvv = cvv; |
| } |
| } |
| |
| static class BankTransfer extends BillingInstrument { |
| int bankAccount; |
| BankTransfer(String ownerName, int bankAccount) { |
| super(ownerName); |
| this.bankAccount = bankAccount; |
| } |
| } |
| } |