/*
 * Copyright (C) 2018 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 static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.verify;

import android.telephony.PhoneStateListener;
import android.telephony.PhysicalChannelConfig;
import android.telephony.ServiceState;
import android.test.suitebuilder.annotation.SmallTest;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import java.lang.reflect.Field;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.Executor;

public class PhoneStateListenerExecutorTest extends TelephonyTest {

    private Executor mSimpleExecutor = new Executor() {
        @Override
        public void execute(Runnable r) {
            r.run();
        }
    };

    private PhoneStateListener mPhoneStateListenerUT;

    private boolean mUserMobileDataState = false;
    private List<PhysicalChannelConfig> mPhysicalChannelConfigs;

    @Before
    public void setUp() throws Exception {
        this.setUp(this.getClass().getSimpleName());

        mPhoneStateListenerUT = new PhoneStateListener(mSimpleExecutor) {
            @Override
            public void onServiceStateChanged(ServiceState serviceState) {
                logd("Service State Changed");
                mServiceState.setVoiceRegState(serviceState.getVoiceRegState());
                mServiceState.setDataRegState(serviceState.getDataRegState());
            }

            @Override
            public void onUserMobileDataStateChanged(boolean state) {
                logd("User Mobile Data State Changed");
                mUserMobileDataState = true;
            }

            @Override
            public void onPhysicalChannelConfigurationChanged(
                    List<PhysicalChannelConfig> configs) {
                logd("PhysicalChannelConfig Changed");
                mPhysicalChannelConfigs = configs;
            }
        };
    }

    @After
    public void tearDown() throws Exception {
        super.tearDown();
    }

    @Test @SmallTest
    public void testTriggerServiceStateChanged() throws Exception {
        Field field = PhoneStateListener.class.getDeclaredField("callback");
        field.setAccessible(true);

        ServiceState ss = new ServiceState();
        ss.setDataRegState(ServiceState.STATE_IN_SERVICE);
        ss.setVoiceRegState(ServiceState.STATE_EMERGENCY_ONLY);

        ((IPhoneStateListener) field.get(mPhoneStateListenerUT)).onServiceStateChanged(ss);

        verify(mServiceState).setDataRegState(ServiceState.STATE_IN_SERVICE);
        verify(mServiceState).setVoiceRegState(ServiceState.STATE_EMERGENCY_ONLY);
    }

    @Test @SmallTest
    public void testTriggerUserMobileDataStateChanged() throws Exception {
        Field field = PhoneStateListener.class.getDeclaredField("callback");
        field.setAccessible(true);

        assertFalse(mUserMobileDataState);

        ((IPhoneStateListener) field.get(mPhoneStateListenerUT)).onUserMobileDataStateChanged(true);

        assertTrue(mUserMobileDataState);
    }

    @Test @SmallTest
    public void testTriggerPhysicalChannelConfigurationChanged() throws Exception {
        Field field = PhoneStateListener.class.getDeclaredField("callback");
        field.setAccessible(true);

        assertNull(mPhysicalChannelConfigs);

        PhysicalChannelConfig config = new PhysicalChannelConfig.Builder()
                .setCellConnectionStatus(PhysicalChannelConfig.CONNECTION_PRIMARY_SERVING)
                .setCellBandwidthDownlinkKhz(2000 /* bandwidth */)
                .build();

        List<PhysicalChannelConfig> configs = Collections.singletonList(config);

        ((IPhoneStateListener) field.get(mPhoneStateListenerUT))
            .onPhysicalChannelConfigurationChanged(configs);

        assertTrue(mPhysicalChannelConfigs.equals(configs));
    }
}