packages/SettingsLib/tests/integ/src/com/android/settingslib/utils/ZoneGetterTest.java

/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * 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.android.settingslib.utils;

import android.content.Context;
import android.support.test.InstrumentationRegistry;
import android.support.test.runner.AndroidJUnit4;
import android.support.test.filters.SmallTest;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;

import java.util.*;
import com.android.settingslib.datetime.ZoneGetter;

import static junit.framework.Assert.assertTrue;

@RunWith(AndroidJUnit4.class)
@SmallTest
public class ZoneGetterTest {
    private static final String TIME_ZONE_LONDON_ID = "Europe/London";
    private static final String TIME_ZONE_LA_ID = "America/Los_Angeles";
    private Locale mLocaleEnUs;
    private Calendar mCalendar;

    @Before
    public void setUp() {
        mLocaleEnUs = new Locale("en", "us");
        Locale.setDefault(mLocaleEnUs);
        mCalendar = new GregorianCalendar(2016, 9, 1);
    }

    @Test
    public void getTimeZoneOffsetAndName_setLondon_returnLondon() {
        // Check it will ends with 'London', not 'British Summer Time' or sth else
        testTimeZoneOffsetAndNameInner(TIME_ZONE_LONDON_ID, "London");
    }

    @Test
    public void getTimeZoneOffsetAndName_setLosAngeles_returnPacificDaylightTime() {
        // Check it will ends with 'Pacific Daylight Time', not 'Los_Angeles'
        testTimeZoneOffsetAndNameInner(TIME_ZONE_LA_ID, "Pacific Daylight Time");
    }

    private void testTimeZoneOffsetAndNameInner(String timeZoneId, String expectedName) {
        final Context context = InstrumentationRegistry.getContext();
        final TimeZone timeZone = TimeZone.getTimeZone(timeZoneId);

        String timeZoneString = ZoneGetter.getTimeZoneOffsetAndName(context, timeZone,
                mCalendar.getTime());

        assertTrue(timeZoneString.endsWith(expectedName));
    }

}