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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.assertNotNull;
+import static org.junit.Assert.assertNull;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonElement;
+import com.google.gson.reflect.TypeToken;
+import java.util.ArrayList;
+import java.util.List;
+import org.junit.Test;
+import org.onap.policy.common.gson.JacksonExclusionStrategy;
+import org.onap.policy.common.gson.JacksonFieldAdapterFactory;
+import org.onap.policy.common.gson.annotation.GsonJsonIgnore;
+import org.onap.policy.common.gson.annotation.GsonJsonProperty;
+
+public class JacksonFieldAdapterFactoryTest {
+
+ private static JacksonFieldAdapterFactory factory = new JacksonFieldAdapterFactory();
+
+ private static Gson gson = new GsonBuilder().setExclusionStrategies(new JacksonExclusionStrategy())
+ .registerTypeAdapterFactory(factory).create();
+
+ @Test
+ public void testCreate() {
+ // unhandled types
+ assertNull(factory.create(gson, TypeToken.get(JsonElement.class)));
+ assertNull(factory.create(gson, TypeToken.get(NothingToSerialize.class)));
+
+ assertNotNull(factory.create(gson, TypeToken.get(Data.class)));
+ assertNotNull(factory.create(gson, TypeToken.get(Derived.class)));
+
+ Data data = new Data();
+
+ // deserialize using fields that aren't in the Data object
+ Data data2 = gson.fromJson("{\"abc\":100}", Data.class);
+ assertEquals(data.toString(), data2.toString());
+
+ // now work with valid fields
+ data.id = 10;
+ data.text = "hello";
+
+ String result = gson.toJson(data);
+ data2 = gson.fromJson(result, Data.class);
+ assertEquals(data.toString(), data2.toString());
+
+ // should also work with derived types
+ Derived der = new Derived();
+ der.setId(20);
+ der.text = "world";
+ der.unserialized = "abc";
+
+ result = gson.toJson(der);
+
+ // should not contain the unserialized field
+ assertFalse(result.contains("abc"));
+
+ Derived der2 = gson.fromJson(result, Derived.class);
+ der.unserialized = null;
+ assertEquals(der.toString(), der2.toString());
+ }
+
+ @Test
+ public void testCreate_Lists() {
+ DataList lst = new DataList();
+ lst.theList = new ArrayList<>();
+ lst.theList.add(new Data(200, "text 20"));
+ lst.theList.add(new Data(210, "text 21"));
+
+ String result = gson.toJson(lst);
+ assertEquals("{'theList':[{'my-id':200,'text':'text 20'},{'my-id':210,'text':'text 21'}]}".replace('\'', '"'),
+ result);
+
+ DataList lst2 = gson.fromJson(result, DataList.class);
+ assertEquals(stripIdent(lst.toString()), stripIdent(lst2.toString()));
+ assertEquals(Data.class, lst2.theList.get(0).getClass());
+ }
+
+ @Test
+ public void testCreate_OnlyOutProps() {
+ InFieldIgnored data = new InFieldIgnored();
+ data.value = "out only";
+
+ // field should be serialized
+ String result = gson.toJson(data);
+ assertEquals("{'value':'out only'}".replace('\'', '"'), result);
+
+ // field should NOT be deserialized
+ data = gson.fromJson(result, InFieldIgnored.class);
+ assertNull(data.value);
+ }
+
+ @Test
+ public void testCreate_OnlyInProps() {
+ OutFieldIgnored data = new OutFieldIgnored();
+ data.value = "in only";
+
+ // field should NOT be serialized
+ String result = gson.toJson(data);
+ assertEquals("{}", result);
+
+ // field should NOT be deserialized
+ data = gson.fromJson("{'value':'in only'}".replace('\'', '"'), OutFieldIgnored.class);
+ assertEquals("in only", data.value);
+ }
+
+ /**
+ * Object identifiers may change with each execution, so this method is used to strip
+ * the identifier from the text string so that the strings will still match across
+ * different runs.
+ *
+ * @param text text from which to strip the identifier
+ * @return the text, without the identifier
+ */
+ private String stripIdent(String text) {
+ return text.replaceFirst("@\\w+", "@");
+ }
+
+ private static class Data {
+ @GsonJsonProperty("my-id")
+ private int id;
+
+ public String text;
+
+ public Data() {
+ super();
+ }
+
+ public Data(int id, String text) {
+ this.id = id;
+ this.text = text;
+ }
+
+ public void setId(int id) {
+ this.id = id;
+ }
+
+ @Override
+ public String toString() {
+ return "Data [id=" + id + ", text=" + text + "]";
+ }
+ }
+
+ private static class Derived extends Data {
+ // not serialized
+ private String unserialized;
+
+ @Override
+ public String toString() {
+ return "Derived [unserialized=" + unserialized + ", toString()=" + super.toString() + "]";
+ }
+ }
+
+ private static class DataList {
+ @GsonJsonProperty
+ private List<Data> theList;
+ }
+
+ protected static class NothingToSerialize {
+ // not serialized
+ protected String unserialized;
+ }
+
+ /**
+ * This has a field that should show up in the "output" list, but not in the "input"
+ * list, because the method will override it.
+ */
+ private static class InFieldIgnored {
+ @GsonJsonProperty("value")
+ private String value;
+
+ @GsonJsonIgnore
+ public void setValue(String value) {
+ this.value = value;
+ }
+ }
+
+ /**
+ * This has a field that should show up in the "input" list, but not in the "output"
+ * list, because the method will override it.
+ */
+ private static class OutFieldIgnored {
+ @GsonJsonProperty("value")
+ private String value;
+
+ @GsonJsonIgnore
+ public String getValue() {
+ return value;
+ }
+ }
+}