120 lines
3.7 KiB
Java
120 lines
3.7 KiB
Java
/*
|
|
* 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;
|
|
|
|
import static com.google.common.truth.Truth.assertThat;
|
|
|
|
import java.io.IOException;
|
|
import java.util.Arrays;
|
|
import java.util.Collections;
|
|
import java.util.LinkedHashMap;
|
|
import java.util.List;
|
|
import java.util.Map;
|
|
import org.junit.Test;
|
|
|
|
public final class ObjectTypeAdapterTest {
|
|
private final Gson gson = new GsonBuilder().create();
|
|
private final TypeAdapter<Object> adapter = gson.getAdapter(Object.class);
|
|
|
|
@Test
|
|
public void testDeserialize() throws Exception {
|
|
Map<?, ?> map = (Map<?, ?>) adapter.fromJson("{\"a\":5,\"b\":[1,2,null],\"c\":{\"x\":\"y\"}}");
|
|
assertThat(map.get("a")).isEqualTo(5.0);
|
|
assertThat(map.get("b")).isEqualTo(Arrays.asList(1.0, 2.0, null));
|
|
assertThat(map.get("c")).isEqualTo(Collections.singletonMap("x", "y"));
|
|
assertThat(map).hasSize(3);
|
|
}
|
|
|
|
@Test
|
|
public void testSerialize() {
|
|
Object object = new RuntimeType();
|
|
assertThat(adapter.toJson(object).replace("\"", "'")).isEqualTo("{'a':5,'b':[1,2,null]}");
|
|
}
|
|
|
|
@Test
|
|
public void testSerializeNullValue() {
|
|
Map<String, Object> map = new LinkedHashMap<>();
|
|
map.put("a", null);
|
|
assertThat(adapter.toJson(map).replace('"', '\'')).isEqualTo("{'a':null}");
|
|
}
|
|
|
|
@Test
|
|
public void testDeserializeNullValue() throws Exception {
|
|
Map<String, Object> map = new LinkedHashMap<>();
|
|
map.put("a", null);
|
|
assertThat(adapter.fromJson("{\"a\":null}")).isEqualTo(map);
|
|
}
|
|
|
|
@Test
|
|
public void testSerializeObject() {
|
|
assertThat(adapter.toJson(new Object())).isEqualTo("{}");
|
|
}
|
|
|
|
private static String repeat(String s, int times) {
|
|
StringBuilder stringBuilder = new StringBuilder(s.length() * times);
|
|
for (int i = 0; i < times; i++) {
|
|
stringBuilder.append(s);
|
|
}
|
|
return stringBuilder.toString();
|
|
}
|
|
|
|
/** Deeply nested JSON arrays should not cause {@link StackOverflowError} */
|
|
@SuppressWarnings("unchecked")
|
|
@Test
|
|
public void testDeserializeDeeplyNestedArrays() throws IOException {
|
|
int times = 10000;
|
|
// [[[ ... ]]]
|
|
String json = repeat("[", times) + repeat("]", times);
|
|
|
|
int actualTimes = 0;
|
|
List<List<?>> current = (List<List<?>>) adapter.fromJson(json);
|
|
while (true) {
|
|
actualTimes++;
|
|
if (current.isEmpty()) {
|
|
break;
|
|
}
|
|
assertThat(current).hasSize(1);
|
|
current = (List<List<?>>) current.get(0);
|
|
}
|
|
assertThat(actualTimes).isEqualTo(times);
|
|
}
|
|
|
|
/** Deeply nested JSON objects should not cause {@link StackOverflowError} */
|
|
@SuppressWarnings("unchecked")
|
|
@Test
|
|
public void testDeserializeDeeplyNestedObjects() throws IOException {
|
|
int times = 10000;
|
|
// {"a":{"a": ... {"a":null} ... }}
|
|
String json = repeat("{\"a\":", times) + "null" + repeat("}", times);
|
|
|
|
int actualTimes = 0;
|
|
Map<String, Map<?, ?>> current = (Map<String, Map<?, ?>>) adapter.fromJson(json);
|
|
while (current != null) {
|
|
assertThat(current).hasSize(1);
|
|
actualTimes++;
|
|
current = (Map<String, Map<?, ?>>) current.get("a");
|
|
}
|
|
assertThat(actualTimes).isEqualTo(times);
|
|
}
|
|
|
|
@SuppressWarnings("unused")
|
|
private class RuntimeType {
|
|
Object a = 5;
|
|
Object b = Arrays.asList(1, 2, null);
|
|
}
|
|
}
|