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/*
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.common.gson;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import com.google.gson.FieldAttributes;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonElement;
import java.lang.reflect.GenericArrayType;
import java.util.LinkedList;
import java.util.TreeMap;
import org.junit.BeforeClass;
import org.junit.Test;
public class JacksonExclusionStrategyTest {
private static JacksonExclusionStrategy strategy;
private static Gson gson;
@BeforeClass
public static void setUpBeforeClass() {
strategy = new JacksonExclusionStrategy();
gson = new GsonBuilder().setExclusionStrategies(strategy).create();
}
@Test
public void testWithGson() {
Derived data = new Derived();
data.setId(10);
data.setText("some text");
data.setValue("some value");
// no fields should be serialized
String result = gson.toJson(data);
assertEquals("{}", result);
// no fields should be deserialized
result = "{'id':20, 'text':'my text', 'value':'my value'}".replace('\'', '"');
Derived data2 = gson.fromJson(result, Derived.class);
assertEquals(new Derived().toString(), data2.toString());
}
@Test
public void testShouldSkipField() throws Exception {
// should skip every field of Data
assertTrue(strategy.shouldSkipField(new FieldAttributes(Data.class.getDeclaredField("id"))));
assertTrue(strategy.shouldSkipField(new FieldAttributes(Data.class.getDeclaredField("text"))));
// should not skip fields in Map
assertFalse(strategy.shouldSkipField(new FieldAttributes(MyMap.class.getDeclaredField("mapId"))));
}
@Test
public void testShouldSkipClass() {
assertFalse(strategy.shouldSkipClass(null));
assertFalse(strategy.shouldSkipClass(Object.class));
}
@Test
public void testIsManaged() {
assertTrue(JacksonExclusionStrategy.isManaged(Data.class));
assertTrue(JacksonExclusionStrategy.isManaged(Intfc.class));
assertTrue(JacksonExclusionStrategy.isManaged(com.google.gson.TypeAdapter.class));
// generic classes
assertFalse(JacksonExclusionStrategy.isManaged(new Data[0].getClass()));
assertFalse(JacksonExclusionStrategy.isManaged(Enum.class));
assertFalse(JacksonExclusionStrategy.isManaged(boolean.class));
assertFalse(JacksonExclusionStrategy.isManaged(byte.class));
assertFalse(JacksonExclusionStrategy.isManaged(short.class));
assertFalse(JacksonExclusionStrategy.isManaged(int.class));
assertFalse(JacksonExclusionStrategy.isManaged(long.class));
assertFalse(JacksonExclusionStrategy.isManaged(float.class));
assertFalse(JacksonExclusionStrategy.isManaged(double.class));
assertFalse(JacksonExclusionStrategy.isManaged(char.class));
assertFalse(JacksonExclusionStrategy.isManaged(Boolean.class));
assertFalse(JacksonExclusionStrategy.isManaged(Byte.class));
assertFalse(JacksonExclusionStrategy.isManaged(Short.class));
assertFalse(JacksonExclusionStrategy.isManaged(Integer.class));
assertFalse(JacksonExclusionStrategy.isManaged(Long.class));
assertFalse(JacksonExclusionStrategy.isManaged(Float.class));
assertFalse(JacksonExclusionStrategy.isManaged(Double.class));
assertFalse(JacksonExclusionStrategy.isManaged(Character.class));
assertFalse(JacksonExclusionStrategy.isManaged(String.class));
assertFalse(JacksonExclusionStrategy.isManaged(MyMap.class));
assertFalse(JacksonExclusionStrategy.isManaged(MyList.class));
assertFalse(JacksonExclusionStrategy.isManaged(MyJson.class));
assertFalse(JacksonExclusionStrategy.isManaged(GenericArrayType.class));
}
/**
* Used to verify that no fields are exposed.
*/
public static class Data {
private int id;
public String text;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
@Override
public String toString() {
return "Data [id=" + id + ", text=" + text + "]";
}
}
public static class Derived extends Data {
protected String value;
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
@Override
public String toString() {
return "Derived [value=" + value + ", " + super.toString() + "]";
}
}
/**
* Used to verify that enums are not managed.
*/
public static enum Enum {
UP, DOWN,
}
/**
* Used to verify that interfaces <i>are</i> managed.
*/
public static interface Intfc {
int getId();
}
/**
* Used to verify that Maps are not managed.
*/
public static class MyMap extends TreeMap<String, Data> {
private static final long serialVersionUID = 1L;
private int mapId;
public int getMapId() {
return mapId;
}
}
/**
* Used to verify that Collections are not managed.
*/
public static class MyList extends LinkedList<Data> {
private static final long serialVersionUID = 1L;
}
/**
* Used to verify that JsonElements are not managed.
*/
public static class MyJson extends JsonElement {
@Override
public JsonElement deepCopy() {
return null;
}
}
}
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