gson-comments/gson/src/test/java/com/google/gson/functional/PrintFormattingTest.java

88 lines
2.5 KiB
Java

/*
* 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.assertFalse;
import static org.junit.Assert.assertTrue;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonObject;
import com.google.gson.common.TestTypes.BagOfPrimitives;
import com.google.gson.common.TestTypes.ClassWithTransientFields;
import com.google.gson.common.TestTypes.Nested;
import com.google.gson.common.TestTypes.PrimitiveArray;
import java.util.ArrayList;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
/**
* Functional tests for print formatting.
*
* @author Inderjeet Singh
* @author Joel Leitch
*/
public class PrintFormattingTest {
private Gson gson;
@Before
public void setUp() throws Exception {
gson = new Gson();
}
@Test
public void testCompactFormattingLeavesNoWhiteSpace() {
List<Object> list = new ArrayList<>();
list.add(new BagOfPrimitives());
list.add(new Nested());
list.add(new PrimitiveArray());
list.add(new ClassWithTransientFields<>());
String json = gson.toJson(list);
assertContainsNoWhiteSpace(json);
}
@Test
public void testJsonObjectWithNullValues() {
JsonObject obj = new JsonObject();
obj.addProperty("field1", "value1");
obj.addProperty("field2", (String) null);
String json = gson.toJson(obj);
assertTrue(json.contains("field1"));
assertFalse(json.contains("field2"));
}
@Test
public void testJsonObjectWithNullValuesSerialized() {
gson = new GsonBuilder().serializeNulls().create();
JsonObject obj = new JsonObject();
obj.addProperty("field1", "value1");
obj.addProperty("field2", (String) null);
String json = gson.toJson(obj);
assertTrue(json.contains("field1"));
assertTrue(json.contains("field2"));
}
private static void assertContainsNoWhiteSpace(String str) {
for (char c : str.toCharArray()) {
assertFalse(Character.isWhitespace(c));
}
}
}