Add test to ensure Zen logging enums stay up to date

        "notification_flags_lib",

        "platform-test-rules",

        "SettingsLib",

        "libprotobuf-java-lite",

        "platformprotoslite",

    ],

    libs: [

/*

 * Copyright (C) 2024 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.server.notification;

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

import android.app.AutomaticZenRule;

import android.provider.Settings;

import android.service.notification.ZenPolicy;

import android.test.suitebuilder.annotation.SmallTest;

import androidx.test.runner.AndroidJUnit4;

import com.android.os.dnd.ActiveRuleType;

import com.android.os.dnd.ChannelPolicy;

import com.android.os.dnd.ConversationType;

import com.android.os.dnd.PeopleType;

import com.android.os.dnd.State;

import com.android.os.dnd.ZenMode;

import com.google.protobuf.Internal;

import org.junit.Test;

import org.junit.runner.RunWith;

import java.lang.reflect.Field;

import java.lang.reflect.Modifier;

import java.util.Arrays;

import java.util.Map;

import java.util.stream.Collectors;

/** Test to validate that logging enums used in Zen classes match their API definitions. */

@SmallTest

@RunWith(AndroidJUnit4.class)

public class ZenEnumTest {

    @Test

    public void testEnum_zenMode() {

        testEnum(Settings.Global.class, "ZEN_MODE", ZenMode.class, "ZEN_MODE");

    }

    @Test

    public void testEnum_activeRuleType() {

        testEnum(AutomaticZenRule.class, "TYPE", ActiveRuleType.class, "TYPE");

    }

    @Test

    public void testEnum_zenPolicyState() {

        testEnum(ZenPolicy.class, "STATE", State.class, "STATE");

    }

    @Test

    public void testEnum_zenPolicyChannelPolicy() {

        testEnum(ZenPolicy.class, "CHANNEL_POLICY", ChannelPolicy.class, "CHANNEL_POLICY");

    }

    @Test

    public void testEnum_zenPolicyConversationType() {

        testEnum(ZenPolicy.class, "CONVERSATION_SENDERS", ConversationType.class, "CONV");

    }

    @Test

    public void testEnum_zenPolicyPeopleType() {

        testEnum(ZenPolicy.class, "PEOPLE_TYPE", PeopleType.class, "PEOPLE");

    }

    /**

     * Verifies that any constants (i.e. {@code public static final int} fields) named {@code

     * <apiPrefix>_SOMETHING} in {@code apiClass} are present and have the same numerical value

     * in the enum values defined in {@code loggingProtoEnumClass}.

     *

     * <p>Note that <em>extra</em> values in the logging enum are accepted (since we have one of

     * those, and the main goal of this test is that we don't forget to update the logging enum

     * if new API enum values are added).

     */

    private static void testEnum(Class<?> apiClass, String apiPrefix,

            Class<? extends Internal.EnumLite> loggingProtoEnumClass,

            String loggingPrefix) {

        Map<String, Integer> apiConstants =

                Arrays.stream(apiClass.getDeclaredFields())

                        .filter(f -> Modifier.isPublic(f.getModifiers()))

                        .filter(f -> Modifier.isStatic(f.getModifiers()))

                        .filter(f -> Modifier.isFinal(f.getModifiers()))

                        .filter(f -> f.getType().equals(int.class))

                        .filter(f -> f.getName().startsWith(apiPrefix + "_"))

                        .collect(Collectors.toMap(

                                Field::getName,

                                ZenEnumTest::getStaticFieldIntValue));

        Map<String, Integer> loggingConstants =

                Arrays.stream(loggingProtoEnumClass.getEnumConstants())

                        .collect(Collectors.toMap(

                                v -> v.toString(),

                                v -> v.getNumber()));

        Map<String, Integer> renamedApiConstants = apiConstants.entrySet().stream()

                .collect(Collectors.toMap(

                        entry -> entry.getKey().replace(apiPrefix + "_", loggingPrefix + "_"),

                        Map.Entry::getValue));

        assertThat(loggingConstants).containsAtLeastEntriesIn(renamedApiConstants);

    }

    private static int getStaticFieldIntValue(Field f) {

        try {

            return f.getInt(null);

        } catch (IllegalAccessException e) {

            throw new RuntimeException(e);

        }

    }

}