[AppOps] Add basic Performance unit tests for App Ops APIs

/*

 * Copyright (C) 2023 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 android.permission

import android.app.AppOpsManager

import android.content.Context

import androidx.benchmark.BenchmarkState

import androidx.benchmark.junit4.BenchmarkRule

import androidx.test.core.app.ApplicationProvider

import androidx.test.filters.LargeTest

import org.junit.Before

import org.junit.Rule

import org.junit.Test

@LargeTest

/**

 * Performance unit tests for app ops APIs.

 *

 * The APIs under test are used for checking permissions and tracking permission accesses and are

 * therefore invoked frequently by the system for all permission-protected data accesses, hence

 * these APIs should be monitored closely for performance.

 */

class AppOpsPerfTest {

    @get:Rule val mBenchmarkRule: BenchmarkRule = BenchmarkRule()

    private lateinit var appOpsManager: AppOpsManager

    private lateinit var opPackageName: String

    private var opPackageUid: Int = 0

    @Before

    fun setUp() {

        val context: Context = ApplicationProvider.getApplicationContext()

        appOpsManager = context.getSystemService<AppOpsManager>(AppOpsManager::class.java)!!

        opPackageName = context.getOpPackageName()

        opPackageUid = context.getPackageManager().getPackageUid(opPackageName, 0)

    }

    @Test

    fun testNoteOp() {

        val state: BenchmarkState = mBenchmarkRule.getState()

        while (state.keepRunning()) {

            appOpsManager.noteOp(

                    AppOpsManager.OPSTR_FINE_LOCATION,

                    opPackageUid,

                    opPackageName,

                    null,

                    null

            )

        }

    }

    @Test

    fun testUnsafeCheckOp() {

        val state: BenchmarkState = mBenchmarkRule.getState()

        while (state.keepRunning()) {

            appOpsManager.unsafeCheckOp(

                    AppOpsManager.OPSTR_FINE_LOCATION,

                    opPackageUid,

                    opPackageName

            )

        }

    }

}

# Bug component: 137825

include platform/frameworks/base:/core/java/android/permission/OWNERS

 No newline at end of file