Add unit test for ClosedSubscriberGroupInfo

/*

 * Copyright 2020 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.

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package com.android.internal.telephony;

import android.os.Parcel;

import android.telephony.ClosedSubscriberGroupInfo;

import android.test.AndroidTestCase;

import org.junit.Test;

public class ClosedSubscriberGroupInfoTest extends AndroidTestCase {

    private static final boolean CSG_INDICATOR = true;

    private static final String HOME_NODEB_NAME = "MyHomeNodeB";

    private static final String HOME_NODEB_NAME_EMPTY = "";

    private static final int CSG_IDENTITY = 1234;

    @Test

    public void testConstructorNormalInput() {

        ClosedSubscriberGroupInfo csgInfo = new ClosedSubscriberGroupInfo(

                CSG_INDICATOR, HOME_NODEB_NAME, CSG_IDENTITY);

        assertEquals(CSG_INDICATOR, csgInfo.getCsgIndicator());

        assertEquals(HOME_NODEB_NAME, csgInfo.getHomeNodebName());

        assertEquals(CSG_IDENTITY, csgInfo.getCsgIdentity());

    }

    @Test

    public void testConstructorHomeNodebNameIsNull() {

        ClosedSubscriberGroupInfo csgInfo = new ClosedSubscriberGroupInfo(

                CSG_INDICATOR, null, CSG_IDENTITY);

        assertEquals(CSG_INDICATOR, csgInfo.getCsgIndicator());

        assertEquals(HOME_NODEB_NAME_EMPTY, csgInfo.getHomeNodebName());

        assertEquals(CSG_IDENTITY, csgInfo.getCsgIdentity());

    }

    @Test

    public void testEqualsSameValues() {

        ClosedSubscriberGroupInfo csgInfo1 = new ClosedSubscriberGroupInfo(

                CSG_INDICATOR, HOME_NODEB_NAME, CSG_IDENTITY);

        // homeNodebName is copied, same value with diff reference

        ClosedSubscriberGroupInfo csgInfo2 = new ClosedSubscriberGroupInfo(

                CSG_INDICATOR, new String(HOME_NODEB_NAME), CSG_IDENTITY);

        assertEquals(csgInfo1, csgInfo2);

    }

    @Test

    public void testEqualsHomeNodebNameIsNull() {

        ClosedSubscriberGroupInfo csgInfo1 = new ClosedSubscriberGroupInfo(

                CSG_INDICATOR, null /* homeNodebName */, CSG_IDENTITY);

        ClosedSubscriberGroupInfo csgInfo2 = new ClosedSubscriberGroupInfo(

                CSG_INDICATOR, ""/* homeNodebName */, CSG_IDENTITY);

        assertEquals(csgInfo1, csgInfo2);

    }

    @Test

    public void testParcel() {

        ClosedSubscriberGroupInfo csgInfo = new ClosedSubscriberGroupInfo(

                CSG_INDICATOR, HOME_NODEB_NAME, CSG_IDENTITY);

        Parcel p = Parcel.obtain();

        csgInfo.writeToParcel(p, 0);

        p.setDataPosition(0);

        ClosedSubscriberGroupInfo csgInfoFromParcel = ClosedSubscriberGroupInfo.CREATOR

                .createFromParcel(p);

        assertEquals(csgInfo, csgInfoFromParcel);

    }

}