[Testing] use AndroidJUnit4 in new MobileDataPreferenceControllerTest

/*

 * 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.telephony;

import static com.android.settings.core.BasePreferenceController.AVAILABLE_UNSEARCHABLE;

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

import static org.mockito.Matchers.anyInt;

import static org.mockito.Mockito.doReturn;

import static org.mockito.Mockito.spy;

import static org.mockito.Mockito.verify;

import static org.mockito.Mockito.when;

import android.app.Instrumentation;

import android.content.Context;

import android.content.res.Resources;

import android.telephony.SubscriptionInfo;

import android.telephony.SubscriptionManager;

import android.telephony.TelephonyManager;

import androidx.fragment.app.FragmentManager;

import androidx.fragment.app.FragmentTransaction;

import androidx.preference.SwitchPreference;

import androidx.test.core.app.ApplicationProvider;

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

import androidx.test.platform.app.InstrumentationRegistry;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.mockito.Mock;

import org.mockito.MockitoAnnotations;

@RunWith(AndroidJUnit4.class)

public class MobileDataPreferenceControllerTest {

    private static final int SUB_ID = 2;

    private static final int SUB_ID_OTHER = 3;

    @Mock

    private FragmentManager mFragmentManager;

    @Mock

    private TelephonyManager mTelephonyManager;

    @Mock

    private TelephonyManager mInvalidTelephonyManager;

    @Mock

    private SubscriptionManager mSubscriptionManager;

    @Mock

    private SubscriptionInfo mSubscriptionInfo;

    @Mock

    private FragmentTransaction mFragmentTransaction;

    private MobileDataPreferenceController mController;

    private SwitchPreference mPreference;

    private Context mContext;

    @Before

    public void setUp() {

        MockitoAnnotations.initMocks(this);

        mContext = spy(ApplicationProvider.getApplicationContext());

        doReturn(mTelephonyManager).when(mContext).getSystemService(Context.TELEPHONY_SERVICE);

        when(mContext.getSystemService(SubscriptionManager.class)).thenReturn(mSubscriptionManager);

        doReturn(mTelephonyManager).when(mTelephonyManager).createForSubscriptionId(SUB_ID);

        doReturn(mInvalidTelephonyManager).when(mTelephonyManager).createForSubscriptionId(

                SubscriptionManager.INVALID_SUBSCRIPTION_ID);

        doReturn(mFragmentTransaction).when(mFragmentManager).beginTransaction();

        mPreference = new SwitchPreference(mContext);

        mController = new MobileDataPreferenceController(mContext, "mobile_data");

        mController.init(mFragmentManager, SUB_ID);

        mPreference.setKey(mController.getPreferenceKey());

    }

    @Test

    public void getAvailabilityStatus_invalidSubscription_returnAvailableUnsearchable() {

        mController.init(mFragmentManager, SubscriptionManager.INVALID_SUBSCRIPTION_ID);

        assertThat(mController.getAvailabilityStatus()).isEqualTo(AVAILABLE_UNSEARCHABLE);

    }

    @Test

    public void isDialogNeeded_disableSingleSim_returnFalse() {

        doReturn(true).when(mTelephonyManager).isDataEnabled();

        doReturn(mSubscriptionInfo).when(mSubscriptionManager).getActiveSubscriptionInfo(SUB_ID);

        doReturn(1).when(mTelephonyManager).getActiveModemCount();

        assertThat(mController.isDialogNeeded()).isFalse();

    }

    @Test

    public void isDialogNeeded_enableNonDefaultSimInMultiSimMode_returnTrue() {

        doReturn(false).when(mTelephonyManager).isDataEnabled();

        doReturn(mSubscriptionInfo).when(mSubscriptionManager)

                .getActiveSubscriptionInfo(SUB_ID);

        // Ideally, it would be better if we could set the default data subscription to

        // SUB_ID_OTHER, and set that as an active subscription id.

        when(mSubscriptionManager.isActiveSubscriptionId(anyInt())).thenReturn(true);

        doReturn(2).when(mTelephonyManager).getActiveModemCount();

        assertThat(mController.isDialogNeeded()).isTrue();

        assertThat(mController.mDialogType).isEqualTo(

                MobileDataDialogFragment.TYPE_MULTI_SIM_DIALOG);

    }

    @Test

    public void handlePreferenceTreeClick_needDialog_showDialog() {

        mController.mNeedDialog = true;

        final Instrumentation instrumentation = InstrumentationRegistry.getInstrumentation();

        instrumentation.runOnMainSync(() -> {

            mController.handlePreferenceTreeClick(mPreference);

        });

        verify(mFragmentManager).beginTransaction();

    }

    @Test

    public void onPreferenceChange_singleSim_On_shouldEnableData() {

        doReturn(true).when(mTelephonyManager).isDataEnabled();

        doReturn(mSubscriptionInfo).when(mSubscriptionManager).getActiveSubscriptionInfo(SUB_ID);

        doReturn(1).when(mTelephonyManager).getActiveModemCount();

        mController.onPreferenceChange(mPreference, true);

        verify(mTelephonyManager).setDataEnabled(true);

    }

    @Test

    public void onPreferenceChange_multiSim_On_shouldEnableData() {

        doReturn(true).when(mTelephonyManager).isDataEnabled();

        doReturn(mSubscriptionInfo).when(mSubscriptionManager).getActiveSubscriptionInfo(SUB_ID);

        doReturn(2).when(mTelephonyManager).getActiveModemCount();

        mController.onPreferenceChange(mPreference, true);

        verify(mTelephonyManager).setDataEnabled(true);

    }

    @Test

    public void isChecked_returnUserDataEnabled() {

        mController.init(mFragmentManager, SUB_ID);

        assertThat(mController.isChecked()).isFalse();

        doReturn(true).when(mTelephonyManager).isDataEnabled();

        assertThat(mController.isChecked()).isTrue();

    }

    @Test

    public void updateState_opportunistic_disabled() {

        doReturn(mSubscriptionInfo).when(mSubscriptionManager).getActiveSubscriptionInfo(SUB_ID);

        mController.init(mFragmentManager, SUB_ID);

        doReturn(true).when(mSubscriptionInfo).isOpportunistic();

        mController.updateState(mPreference);

        assertThat(mPreference.isEnabled()).isFalse();

        assertThat(mPreference.getSummary())

                .isEqualTo(resourceString("mobile_data_settings_summary_auto_switch"));

    }

    @Test

    public void updateState_notOpportunistic_enabled() {

        doReturn(mSubscriptionInfo).when(mSubscriptionManager).getActiveSubscriptionInfo(SUB_ID);

        mController.init(mFragmentManager, SUB_ID);

        doReturn(false).when(mSubscriptionInfo).isOpportunistic();

        mController.updateState(mPreference);

        assertThat(mPreference.isEnabled()).isTrue();

        assertThat(mPreference.getSummary())

                .isEqualTo(resourceString("mobile_data_settings_summary"));

    }

    public String resourceString(String name) {

        final Resources res = mContext.getResources();

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

    }

}