hostsidetests/devicepolicy/app/DeviceOwner/src/com/android/cts/deviceowner/SetTimeTest.java

/*
 * Copyright (C) 2018 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.cts.deviceowner;

import android.app.admin.DevicePolicyManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.provider.Settings;

import java.util.Calendar;
import java.util.TimeZone;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;

/**
 * Test {@link DevicePolicyManager#setTime} and @link {DevicePolicyManager#setTimeZone}
 */
public class SetTimeTest extends BaseDeviceOwnerTest {

    private static final long TEST_TIME_1 = 10000000;
    private static final long TEST_TIME_2 = 100000000;
    private static final String TEST_TIME_ZONE_1 = "America/New_York";
    private static final String TEST_TIME_ZONE_2 = "America/Los_Angeles";
    private static final long TIMEOUT_SEC = 60;

    // Real world time to restore after the test.
    private long mStartTimeWallClockMillis;
    // Elapsed time to measure time taken by the test.
    private long mStartTimeElapsedNanos;

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        saveTime();
    }

    @Override
    protected void tearDown() throws Exception {
        restoreTime();
        super.tearDown();
    }

    private void testSetTimeWithValue(long testTime) throws Exception {
        final CountDownLatch latch = new CountDownLatch(1);
        BroadcastReceiver receiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                latch.countDown();
            }
        };
        mContext.registerReceiver(receiver, new IntentFilter(Intent.ACTION_TIME_CHANGED));

        try {
            assertTrue("failed to set time", mDevicePolicyManager.setTime(getWho(), testTime));
            assertTrue("timed out waiting for time change broadcast",
                latch.await(TIMEOUT_SEC, TimeUnit.SECONDS));
            assertTrue("time is different from what was set",
                System.currentTimeMillis() <= testTime + (TIMEOUT_SEC + 1) * 1000);
        } finally {
            mContext.unregisterReceiver(receiver);
        }
    }

    public void testSetTime() throws Exception {
        mDevicePolicyManager.setGlobalSetting(getWho(), Settings.Global.AUTO_TIME, "0");
        testSetTimeWithValue(TEST_TIME_1);
        testSetTimeWithValue(TEST_TIME_2);
    }

    public void testSetTimeFailWithAutoTimeOn() {
        mDevicePolicyManager.setGlobalSetting(getWho(), Settings.Global.AUTO_TIME, "1");
        assertFalse(mDevicePolicyManager.setTime(getWho(), TEST_TIME_1));
    }

    private void testSetTimeZoneWithValue(String testTimeZone) throws Exception {
        final CountDownLatch latch = new CountDownLatch(1);
        final BroadcastReceiver receiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                if (testTimeZone.equals(intent.getStringExtra(Intent.EXTRA_TIMEZONE))) {
                    latch.countDown();
                }
            }
        };
        mContext.registerReceiver(receiver, new IntentFilter(Intent.ACTION_TIMEZONE_CHANGED));

        try {
            assertTrue("failed to set timezone",
                mDevicePolicyManager.setTimeZone(getWho(), testTimeZone));
            assertTrue("timed out waiting for timezone change broadcast",
                latch.await(TIMEOUT_SEC, TimeUnit.SECONDS));

            // There might be a delay in timezone setting propagation, so we retry for 10 seconds.
            int retries = 0;
            while (!testTimeZone.equals(TimeZone.getDefault().getID())) {
                if (retries++ > 10) {
                    fail("timezone wasn't updated");
                }
                Thread.sleep(1000);
            }
        } finally {
            mContext.unregisterReceiver(receiver);
        }
    }

    public void testSetTimeZone() throws Exception {
        mDevicePolicyManager.setGlobalSetting(getWho(), Settings.Global.AUTO_TIME_ZONE, "0");

        try {
            // If we are already in test time zone, use another one first.
            if (TEST_TIME_ZONE_1.equals(TimeZone.getDefault().getID())) {
                testSetTimeZoneWithValue(TEST_TIME_ZONE_2);
                testSetTimeZoneWithValue(TEST_TIME_ZONE_1);
            } else {
                testSetTimeZoneWithValue(TEST_TIME_ZONE_1);
                testSetTimeZoneWithValue(TEST_TIME_ZONE_2);
            }
        } finally {
            mDevicePolicyManager.setGlobalSetting(getWho(), Settings.Global.AUTO_TIME_ZONE, "1");
        }
    }

    public void testSetTimeZoneFailWithAutoTimezoneOn() {
        mDevicePolicyManager.setGlobalSetting(getWho(), Settings.Global.AUTO_TIME_ZONE, "1");
        assertFalse(mDevicePolicyManager.setTimeZone(getWho(), TEST_TIME_ZONE_1));
    }

    private void saveTime() {
        mStartTimeWallClockMillis = System.currentTimeMillis();
        mStartTimeElapsedNanos = System.nanoTime();
    }

    private void restoreTime() {
        mDevicePolicyManager.setGlobalSetting(getWho(), Settings.Global.AUTO_TIME, "0");

        final long estimatedNow = mStartTimeWallClockMillis +
                TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - mStartTimeElapsedNanos);
        mDevicePolicyManager.setTime(getWho(), estimatedNow);

        mDevicePolicyManager.setGlobalSetting(getWho(), Settings.Global.AUTO_TIME, "1");

    }
}