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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 static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.common.TestTypes.ArrayOfObjects;
import com.google.gson.common.TestTypes.BagOfPrimitives;
import com.google.gson.reflect.TypeToken;
import java.lang.reflect.Type;
import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import org.junit.Before;
import org.junit.Test;
/**
* Functional tests for pretty printing option.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
public class PrettyPrintingTest {
private static final boolean DEBUG = false;
private Gson gson;
@Before
public void setUp() throws Exception {
gson = new GsonBuilder().setPrettyPrinting().create();
}
@Test
public void testPrettyPrintList() {
BagOfPrimitives b = new BagOfPrimitives();
List<BagOfPrimitives> listOfB = new LinkedList<>();
for (int i = 0; i < 15; ++i) {
listOfB.add(b);
}
Type typeOfSrc = new TypeToken<List<BagOfPrimitives>>() {}.getType();
String json = gson.toJson(listOfB, typeOfSrc);
print(json);
}
@Test
public void testPrettyPrintArrayOfObjects() {
ArrayOfObjects target = new ArrayOfObjects();
String json = gson.toJson(target);
print(json);
}
@Test
public void testPrettyPrintArrayOfPrimitives() {
int[] ints = new int[] { 1, 2, 3, 4, 5 };
String json = gson.toJson(ints);
assertEquals("[\n 1,\n 2,\n 3,\n 4,\n 5\n]", json);
}
@Test
public void testPrettyPrintArrayOfPrimitiveArrays() {
int[][] ints = new int[][] { { 1, 2 }, { 3, 4 }, { 5, 6 }, { 7, 8 },
{ 9, 0 }, { 10 } };
String json = gson.toJson(ints);
assertEquals("[\n [\n 1,\n 2\n ],\n [\n 3,\n 4\n ],\n [\n 5,\n 6\n ],"
+ "\n [\n 7,\n 8\n ],\n [\n 9,\n 0\n ],\n [\n 10\n ]\n]", json);
}
@Test
public void testPrettyPrintListOfPrimitiveArrays() {
List<Integer[]> list = Arrays.asList(new Integer[][] { { 1, 2 }, { 3, 4 },
{ 5, 6 }, { 7, 8 }, { 9, 0 }, { 10 } });
String json = gson.toJson(list);
assertEquals("[\n [\n 1,\n 2\n ],\n [\n 3,\n 4\n ],\n [\n 5,\n 6\n ],"
+ "\n [\n 7,\n 8\n ],\n [\n 9,\n 0\n ],\n [\n 10\n ]\n]", json);
}
@Test
public void testMap() {
Map<String, Integer> map = new LinkedHashMap<>();
map.put("abc", 1);
map.put("def", 5);
String json = gson.toJson(map);
assertEquals("{\n \"abc\": 1,\n \"def\": 5\n}", json);
}
// In response to bug 153
@Test
public void testEmptyMapField() {
ClassWithMap obj = new ClassWithMap();
obj.map = new LinkedHashMap<>();
String json = gson.toJson(obj);
assertTrue(json.contains("{\n \"map\": {},\n \"value\": 2\n}"));
}
@SuppressWarnings("unused")
private static class ClassWithMap {
Map<String, Integer> map;
int value = 2;
}
@Test
public void testMultipleArrays() {
int[][][] ints = new int[][][] { { { 1 }, { 2 } } };
String json = gson.toJson(ints);
assertEquals("[\n [\n [\n 1\n ],\n [\n 2\n ]\n ]\n]", json);
}
private void print(String msg) {
if (DEBUG) {
System.out.println(msg);
}
}
}
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