android-34/android/libcore/regression/CharsetForNamePerfTest.java

/*
 * Copyright (C) 2022 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.libcore.regression;

import android.perftests.utils.BenchmarkState;
import android.perftests.utils.PerfStatusReporter;
import android.test.suitebuilder.annotation.LargeTest;

import junitparams.JUnitParamsRunner;
import junitparams.Parameters;

import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;

import java.nio.charset.Charset;

@RunWith(JUnitParamsRunner.class)
@LargeTest
public class CharsetForNamePerfTest {
    @Rule public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter();

    public static String[] charsetNames() {
        return new String[] {
            "UTF-16",
            "UTF-8",
            "UTF8",
            "ISO-8859-1",
            "8859_1",
            "ISO-8859-2",
            "8859_2",
            "US-ASCII",
            "ASCII",
        };
    }

    @Test
    @Parameters(method = "charsetNames")
    public void timeCharsetForName(String charsetName) throws Exception {
        BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
        while (state.keepRunning()) {
            Charset.forName(charsetName);
        }
    }
}