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/*
* Copyright (C) 2008 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.functional;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.annotations.Since;
import com.google.gson.annotations.Until;
import com.google.gson.common.TestTypes.BagOfPrimitives;
import junit.framework.TestCase;
/**
* Functional tests for versioning support in Gson.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
public class VersioningTest extends TestCase {
private static final int A = 0;
private static final int B = 1;
private static final int C = 2;
private static final int D = 3;
private GsonBuilder builder;
@Override
protected void setUp() throws Exception {
super.setUp();
builder = new GsonBuilder();
}
public void testVersionedUntilSerialization() {
Version1 target = new Version1();
Gson gson = builder.setVersion(1.29).create();
String json = gson.toJson(target);
assertTrue(json.contains("\"a\":" + A));
gson = builder.setVersion(1.3).create();
json = gson.toJson(target);
assertFalse(json.contains("\"a\":" + A));
}
public void testVersionedUntilDeserialization() {
Gson gson = builder.setVersion(1.3).create();
String json = "{\"a\":3,\"b\":4,\"c\":5}";
Version1 version1 = gson.fromJson(json, Version1.class);
assertEquals(A, version1.a);
}
public void testVersionedClassesSerialization() {
Gson gson = builder.setVersion(1.0).create();
String json1 = gson.toJson(new Version1());
String json2 = gson.toJson(new Version1_1());
assertEquals(json1, json2);
}
public void testVersionedClassesDeserialization() {
Gson gson = builder.setVersion(1.0).create();
String json = "{\"a\":3,\"b\":4,\"c\":5}";
Version1 version1 = gson.fromJson(json, Version1.class);
assertEquals(3, version1.a);
assertEquals(4, version1.b);
Version1_1 version1_1 = gson.fromJson(json, Version1_1.class);
assertEquals(3, version1_1.a);
assertEquals(4, version1_1.b);
assertEquals(C, version1_1.c);
}
public void testIgnoreLaterVersionClassSerialization() {
Gson gson = builder.setVersion(1.0).create();
assertEquals("null", gson.toJson(new Version1_2()));
}
public void testIgnoreLaterVersionClassDeserialization() {
Gson gson = builder.setVersion(1.0).create();
String json = "{\"a\":3,\"b\":4,\"c\":5,\"d\":6}";
Version1_2 version1_2 = gson.fromJson(json, Version1_2.class);
// Since the class is versioned to be after 1.0, we expect null
// This is the new behavior in Gson 2.0
assertNull(version1_2);
}
public void testVersionedGsonWithUnversionedClassesSerialization() {
Gson gson = builder.setVersion(1.0).create();
BagOfPrimitives target = new BagOfPrimitives(10, 20, false, "stringValue");
assertEquals(target.getExpectedJson(), gson.toJson(target));
}
public void testVersionedGsonWithUnversionedClassesDeserialization() {
Gson gson = builder.setVersion(1.0).create();
String json = "{\"longValue\":10,\"intValue\":20,\"booleanValue\":false}";
BagOfPrimitives expected = new BagOfPrimitives();
expected.longValue = 10;
expected.intValue = 20;
expected.booleanValue = false;
BagOfPrimitives actual = gson.fromJson(json, BagOfPrimitives.class);
assertEquals(expected, actual);
}
public void testVersionedGsonMixingSinceAndUntilSerialization() {
Gson gson = builder.setVersion(1.0).create();
SinceUntilMixing target = new SinceUntilMixing();
String json = gson.toJson(target);
assertFalse(json.contains("\"b\":" + B));
gson = builder.setVersion(1.2).create();
json = gson.toJson(target);
assertTrue(json.contains("\"b\":" + B));
gson = builder.setVersion(1.3).create();
json = gson.toJson(target);
assertFalse(json.contains("\"b\":" + B));
}
public void testVersionedGsonMixingSinceAndUntilDeserialization() {
String json = "{\"a\":5,\"b\":6}";
Gson gson = builder.setVersion(1.0).create();
SinceUntilMixing result = gson.fromJson(json, SinceUntilMixing.class);
assertEquals(5, result.a);
assertEquals(B, result.b);
gson = builder.setVersion(1.2).create();
result = gson.fromJson(json, SinceUntilMixing.class);
assertEquals(5, result.a);
assertEquals(6, result.b);
gson = builder.setVersion(1.3).create();
result = gson.fromJson(json, SinceUntilMixing.class);
assertEquals(5, result.a);
assertEquals(B, result.b);
}
private static class Version1 {
@Until(1.3) int a = A;
@Since(1.0) int b = B;
}
private static class Version1_1 extends Version1 {
@Since(1.1) int c = C;
}
@Since(1.2)
private static class Version1_2 extends Version1_1 {
@SuppressWarnings("unused")
int d = D;
}
private static class SinceUntilMixing {
int a = A;
@Since(1.1)
@Until(1.3)
int b = B;
}
}
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