Add test case for on off airplane mode repeatly

/*

 * Copyright (C) 2021 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.settings.network;

import static com.google.common.truth.Truth.assertThat;

import android.app.Instrumentation;

import android.provider.Settings;

import android.provider.SettingsSlicesContract;

import android.util.Log;

import androidx.test.ext.junit.runners.AndroidJUnit4;

import androidx.test.filters.SmallTest;

import androidx.test.platform.app.InstrumentationRegistry;

import com.android.settings.testutils.UiUtils;

import org.junit.After;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

@RunWith(AndroidJUnit4.class)

@SmallTest

public class AirplaneModePreferenceControllerComponentTest {

    // Airplane on off status

    private static final int ON = 1;

    private static final int OFF = 0;

    public final String TAG = this.getClass().getName();

    private final Instrumentation mInstrumentation = InstrumentationRegistry.getInstrumentation();

    private boolean mOriginAirplaneModeIsOn;

    @Before

    public void setUp() {

        // Make sure origin airplane mode is OFF.

        mOriginAirplaneModeIsOn = is_airplane_mode_on();

        if (mOriginAirplaneModeIsOn) {

            Log.d(TAG, "Origin airplane mode is on, turn it off.");

            Settings.Global.putInt(mInstrumentation.getTargetContext().getContentResolver(),

                    Settings.Global.AIRPLANE_MODE_ON, OFF);

        }

    }

    /**

     * Tests on/off airplane mode repeatedly.

     * Previously, a bug describe that crash issue if user on off airplane mode repeatedly.

     * This case try to switch on & off airplane mode for 10 times to check crash issue.

     */

    @Test

    public void test_on_off_airplane_mode_multiple_times() {

        AirplaneModePreferenceController controller =

                new AirplaneModePreferenceController(mInstrumentation.getTargetContext(),

                        SettingsSlicesContract.KEY_AIRPLANE_MODE);

        for (int i = 0; i < 10; ++i) {

            Log.d(TAG, "Test #" + (i + 1));

            controller.setChecked(true);

            assertThat(UiUtils.waitUntilCondition(1000,

                    () -> is_airplane_mode_on())).isTrue();

            controller.setChecked(false);

            assertThat(UiUtils.waitUntilCondition(1000,

                    () -> !is_airplane_mode_on())).isTrue();

        }

    }

    private boolean is_airplane_mode_on() {

        return Settings.System.getInt(

                mInstrumentation.getTargetContext().getContentResolver(),

                Settings.Global.AIRPLANE_MODE_ON, OFF) != 0;

    }

    @After

    public void tearDown() {

        if (is_airplane_mode_on() != mOriginAirplaneModeIsOn) {

            Settings.Global.putInt(mInstrumentation.getTargetContext().getContentResolver(),

                    Settings.Global.AIRPLANE_MODE_ON, (

                            mOriginAirplaneModeIsOn ? ON : OFF));

        }

    }

}