Added unit test cases for VoLteServiceState

/*

 * 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.internal.telephony;

import android.os.Bundle;

import android.os.Parcel;

import android.telephony.ServiceState;

import android.telephony.TelephonyManager;

import android.telephony.VoLteServiceState;

import android.test.suitebuilder.annotation.SmallTest;

import android.util.Pair;

import junit.framework.TestCase;

import java.util.ArrayList;

public class VoLteServiceStateTest extends TestCase {

    @SmallTest

    public void testGetState() {

        VoLteServiceState state = new VoLteServiceState(VoLteServiceState.HANDOVER_STARTED);

        assertEquals(VoLteServiceState.HANDOVER_STARTED, state.getSrvccState());

    }

    @SmallTest

    public void testParcel() {

        VoLteServiceState state = new VoLteServiceState(VoLteServiceState.HANDOVER_FAILED);

        Parcel p = Parcel.obtain();

        state.writeToParcel(p, 0);

        p.setDataPosition(0);

        VoLteServiceState newState = VoLteServiceState.CREATOR.createFromParcel(p);

        assertEquals(state, newState);

    }

    @SmallTest

    public void testCreateFromBundle() {

        Bundle b = new Bundle();

        b.putInt("mSrvccState", VoLteServiceState.HANDOVER_COMPLETED);

        assertEquals(VoLteServiceState.HANDOVER_COMPLETED,

                VoLteServiceState.newFromBundle(b).getSrvccState());

    }

    @SmallTest

    public void testFillInNotifierBundle() {

        Bundle b = new Bundle();

        VoLteServiceState state = new VoLteServiceState(VoLteServiceState.HANDOVER_CANCELED);

        state.fillInNotifierBundle(b);

        assertEquals(VoLteServiceState.HANDOVER_CANCELED, b.getInt("mSrvccState"));

    }

    @SmallTest

    public void testCopy() {

        VoLteServiceState state = new VoLteServiceState(VoLteServiceState.HANDOVER_STARTED);

        VoLteServiceState newState = new VoLteServiceState(state);

        assertEquals(state, newState);

    }

}