[Testing] Use AndroidJUnit4 instead in MobilePlanPreferenceControllerTest

/*

 * Copyright (C) 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.

 */

package com.android.settings.network;

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

import android.content.Context;

import android.content.res.Resources;

import androidx.test.core.app.ApplicationProvider;

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

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

@RunWith(AndroidJUnit4.class)

public class MobilePlanPreferenceControllerTest {

    private Context mContext;

    @Before

    public void setUp() {

        mContext = ApplicationProvider.getApplicationContext();

    }

    @Test

    public void testNoProvisionStringFormattedCorrectly() {

        final String operator = "test_operator";

        assertThat(resourceString("mobile_no_provisioning_url", operator))

                .contains(operator);

    }

    public String resourceString(String name, Object value) {

        final Resources res = mContext.getResources();

        return res.getString(res.getIdentifier(name, "string", mContext.getPackageName()), value);

    }

}