2008-09-01 05:13:32 +02:00
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/*
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* Copyright (C) 2008 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.gson;
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2011-12-29 08:17:36 +01:00
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import java.lang.reflect.Modifier;
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2012-04-12 20:27:48 +02:00
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import java.lang.reflect.Type;
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2012-05-06 09:19:23 +02:00
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2008-09-01 05:13:32 +02:00
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import junit.framework.TestCase;
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2012-05-06 09:19:23 +02:00
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import com.google.gson.stream.JsonReader;
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import com.google.gson.stream.JsonWriter;
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2008-09-01 05:13:32 +02:00
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/**
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* Unit tests for {@link GsonBuilder}.
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*
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* @author Inderjeet Singh
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*/
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public class GsonBuilderTest extends TestCase {
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2012-04-12 20:27:48 +02:00
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private static final TypeAdapter<Object> NULL_TYPE_ADAPTER = new TypeAdapter<Object>() {
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@Override public void write(JsonWriter out, Object value) {
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throw new AssertionError();
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}
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@Override public Object read(JsonReader in) {
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throw new AssertionError();
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}
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};
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2008-09-01 05:13:32 +02:00
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public void testCreatingMoreThanOnce() {
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GsonBuilder builder = new GsonBuilder();
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builder.create();
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builder.create();
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}
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2011-12-29 08:17:36 +01:00
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public void testExcludeFieldsWithModifiers() {
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Gson gson = new GsonBuilder()
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.excludeFieldsWithModifiers(Modifier.VOLATILE, Modifier.PRIVATE)
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.create();
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assertEquals("{\"d\":\"d\"}", gson.toJson(new HasModifiers()));
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}
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2012-06-30 04:37:49 +02:00
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public void testRegisterTypeAdapterForCoreType() {
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2012-04-12 20:27:48 +02:00
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Type[] types = {
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byte.class,
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int.class,
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double.class,
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Short.class,
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Long.class,
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String.class,
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};
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for (Type type : types) {
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2012-06-30 04:37:49 +02:00
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new GsonBuilder().registerTypeAdapter(type, NULL_TYPE_ADAPTER);
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2012-04-12 20:27:48 +02:00
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}
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}
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2012-03-11 22:43:38 +01:00
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@SuppressWarnings("unused")
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2011-12-29 08:17:36 +01:00
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static class HasModifiers {
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private String a = "a";
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volatile String b = "b";
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private volatile String c = "c";
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String d = "d";
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}
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public void testTransientFieldExclusion() {
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Gson gson = new GsonBuilder()
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.excludeFieldsWithModifiers()
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.create();
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assertEquals("{\"a\":\"a\"}", gson.toJson(new HasTransients()));
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}
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static class HasTransients {
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transient String a = "a";
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}
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2021-12-31 00:08:18 +01:00
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public void testDisableJdkUnsafe() {
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Gson gson = new GsonBuilder()
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.disableJdkUnsafe()
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.create();
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try {
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gson.fromJson("{}", ClassWithoutNoArgsConstructor.class);
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fail("Expected exception");
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} catch (JsonIOException expected) {
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assertEquals(
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"Unable to create instance of class com.google.gson.GsonBuilderTest$ClassWithoutNoArgsConstructor; "
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+ "usage of JDK Unsafe is disabled. Registering an InstanceCreator or a TypeAdapter for this type, "
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+ "adding a no-args constructor, or enabling usage of JDK Unsafe may fix this problem.",
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expected.getMessage()
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);
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}
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}
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private static class ClassWithoutNoArgsConstructor {
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@SuppressWarnings("unused")
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public ClassWithoutNoArgsConstructor(String s) {
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}
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}
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2008-09-01 05:13:32 +02:00
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}
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