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