159 lines
5.6 KiB
Java
159 lines
5.6 KiB
Java
/*
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* Copyright (C) 2016 The Gson Authors
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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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import com.google.gson.internal.Excluder;
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import com.google.gson.stream.JsonReader;
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import com.google.gson.stream.JsonWriter;
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import com.google.gson.stream.MalformedJsonException;
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import java.io.IOException;
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import java.io.StringReader;
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import java.io.StringWriter;
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import java.lang.reflect.Field;
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import java.lang.reflect.Type;
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import java.text.DateFormat;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.HashMap;
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import junit.framework.TestCase;
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/**
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* Unit tests for {@link Gson}.
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*
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* @author Ryan Harter
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*/
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public final class GsonTest extends TestCase {
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private static final Excluder CUSTOM_EXCLUDER = Excluder.DEFAULT
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.excludeFieldsWithoutExposeAnnotation()
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.disableInnerClassSerialization();
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private static final FieldNamingStrategy CUSTOM_FIELD_NAMING_STRATEGY = new FieldNamingStrategy() {
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@Override public String translateName(Field f) {
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return "foo";
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}
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};
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private static final ToNumberStrategy CUSTOM_OBJECT_TO_NUMBER_STRATEGY = ToNumberPolicy.DOUBLE;
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private static final ToNumberStrategy CUSTOM_NUMBER_TO_NUMBER_STRATEGY = ToNumberPolicy.LAZILY_PARSED_NUMBER;
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public void testOverridesDefaultExcluder() {
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Gson gson = new Gson(CUSTOM_EXCLUDER, CUSTOM_FIELD_NAMING_STRATEGY,
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new HashMap<Type, InstanceCreator<?>>(), true, false, false, true, false,
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true, true, false, false, true, LongSerializationPolicy.DEFAULT, null, DateFormat.DEFAULT,
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DateFormat.DEFAULT, new ArrayList<TypeAdapterFactory>(),
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new ArrayList<TypeAdapterFactory>(), new ArrayList<TypeAdapterFactory>(),
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CUSTOM_OBJECT_TO_NUMBER_STRATEGY, CUSTOM_NUMBER_TO_NUMBER_STRATEGY,
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Collections.<ReflectionAccessFilter>emptyList());
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assertEquals(CUSTOM_EXCLUDER, gson.excluder);
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assertEquals(CUSTOM_FIELD_NAMING_STRATEGY, gson.fieldNamingStrategy());
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assertEquals(true, gson.serializeNulls());
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assertEquals(false, gson.htmlSafe());
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}
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public void testClonedTypeAdapterFactoryListsAreIndependent() {
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Gson original = new Gson(CUSTOM_EXCLUDER, CUSTOM_FIELD_NAMING_STRATEGY,
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new HashMap<Type, InstanceCreator<?>>(), true, false, false, true, false,
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true, true, false, false, true, LongSerializationPolicy.DEFAULT, null, DateFormat.DEFAULT,
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DateFormat.DEFAULT, new ArrayList<TypeAdapterFactory>(),
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new ArrayList<TypeAdapterFactory>(), new ArrayList<TypeAdapterFactory>(),
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CUSTOM_OBJECT_TO_NUMBER_STRATEGY, CUSTOM_NUMBER_TO_NUMBER_STRATEGY,
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Collections.<ReflectionAccessFilter>emptyList());
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Gson clone = original.newBuilder()
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.registerTypeAdapter(Object.class, new TestTypeAdapter())
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.create();
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assertEquals(original.factories.size() + 1, clone.factories.size());
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}
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private static final class TestTypeAdapter extends TypeAdapter<Object> {
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@Override public void write(JsonWriter out, Object value) throws IOException {
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// Test stub.
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}
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@Override public Object read(JsonReader in) throws IOException { return null; }
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}
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public void testNewJsonWriter_Default() throws IOException {
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StringWriter writer = new StringWriter();
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JsonWriter jsonWriter = new GsonBuilder().create().newJsonWriter(writer);
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jsonWriter.beginObject();
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jsonWriter.name("test");
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jsonWriter.nullValue();
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jsonWriter.name("<test2");
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jsonWriter.value(true);
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jsonWriter.endObject();
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try {
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// Additional top-level value
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jsonWriter.value(1);
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fail();
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} catch (IllegalStateException expected) {
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assertEquals("JSON must have only one top-level value.", expected.getMessage());
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}
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jsonWriter.close();
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assertEquals("{\"\\u003ctest2\":true}", writer.toString());
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}
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public void testNewJsonWriter_Custom() throws IOException {
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StringWriter writer = new StringWriter();
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JsonWriter jsonWriter = new GsonBuilder()
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.disableHtmlEscaping()
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.generateNonExecutableJson()
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.setPrettyPrinting()
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.serializeNulls()
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.setLenient()
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.create()
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.newJsonWriter(writer);
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jsonWriter.beginObject();
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jsonWriter.name("test");
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jsonWriter.nullValue();
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jsonWriter.name("<test2");
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jsonWriter.value(true);
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jsonWriter.endObject();
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// Additional top-level value
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jsonWriter.value(1);
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jsonWriter.close();
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assertEquals(")]}'\n{\n \"test\": null,\n \"<test2\": true\n}1", writer.toString());
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}
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public void testNewJsonReader_Default() throws IOException {
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String json = "test"; // String without quotes
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JsonReader jsonReader = new GsonBuilder().create().newJsonReader(new StringReader(json));
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try {
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jsonReader.nextString();
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fail();
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} catch (MalformedJsonException expected) {
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}
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jsonReader.close();
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}
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public void testNewJsonReader_Custom() throws IOException {
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String json = "test"; // String without quotes
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JsonReader jsonReader = new GsonBuilder()
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.setLenient()
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.create()
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.newJsonReader(new StringReader(json));
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assertEquals("test", jsonReader.nextString());
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jsonReader.close();
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}
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}
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