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/*
* Copyright (C) 2011 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.typeadapters;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;
import junit.framework.TestCase;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
public final class UtcDateTypeAdapterTest extends TestCase {
private final Gson gson = new GsonBuilder()
.registerTypeAdapter(Date.class, new UtcDateTypeAdapter())
.create();
public void testLocalTimeZone() {
Date expected = new Date();
String json = gson.toJson(expected);
Date actual = gson.fromJson(json, Date.class);
assertEquals(expected.getTime(), actual.getTime());
}
public void testDifferentTimeZones() {
for (String timeZone : TimeZone.getAvailableIDs()) {
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone(timeZone));
Date expected = cal.getTime();
String json = gson.toJson(expected);
// System.out.println(json + ": " + timeZone);
Date actual = gson.fromJson(json, Date.class);
assertEquals(expected.getTime(), actual.getTime());
}
}
/**
* JDK 1.7 introduced support for XXX format to indicate UTC date. But Android is older JDK.
* We want to make sure that this date is parseable in Android.
*/
public void testUtcDatesOnJdkBefore1_7() {
Gson gson = new GsonBuilder()
.registerTypeAdapter(Date.class, new UtcDateTypeAdapter())
.create();
gson.fromJson("'2014-12-05T04:00:00.000Z'", Date.class);
}
public void testUtcWithJdk7Default() {
Date expected = new Date();
SimpleDateFormat iso8601Format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSXXX", Locale.US);
iso8601Format.setTimeZone(TimeZone.getTimeZone("UTC"));
String expectedJson = "\"" + iso8601Format.format(expected) + "\"";
String actualJson = gson.toJson(expected);
assertEquals(expectedJson, actualJson);
Date actual = gson.fromJson(expectedJson, Date.class);
assertEquals(expected.getTime(), actual.getTime());
}
public void testNullDateSerialization() {
String json = gson.toJson(null, Date.class);
assertEquals("null", json);
}
}
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