| /* |
| * 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 android.text; |
| |
| import android.perftests.utils.BenchmarkState; |
| import android.perftests.utils.PerfStatusReporter; |
| |
| import androidx.test.filters.LargeTest; |
| import androidx.test.runner.AndroidJUnit4; |
| |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.util.function.Supplier; |
| |
| @RunWith(AndroidJUnit4.class) |
| @LargeTest |
| public class TextUtilsPerfTest { |
| @Rule |
| public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter(); |
| |
| public static final String TEMPLATE = "Template that combines %s and %d together"; |
| |
| public String mVar1 = "example"; |
| public int mVar2 = 42; |
| |
| /** |
| * Measure overhead of formatting a string via {@link String#format}. |
| */ |
| @Test |
| public void timeFormatUpstream() { |
| final BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| String res = String.format(TEMPLATE, mVar1, mVar2); |
| } |
| } |
| |
| /** |
| * Measure overhead of formatting a string via |
| * {@link TextUtils#formatSimple}. |
| */ |
| @Test |
| public void timeFormatLocal() { |
| final BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| String res = TextUtils.formatSimple(TEMPLATE, mVar1, mVar2); |
| } |
| } |
| |
| /** |
| * Measure overhead of formatting a string inline. |
| */ |
| @Test |
| public void timeFormatInline() { |
| final BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| String res = "Template that combines " + mVar1 + " and " + mVar2 + " together"; |
| } |
| } |
| |
| /** |
| * Measure overhead of a passing null-check that uses a lambda to |
| * communicate a custom error message. |
| */ |
| @Test |
| public void timeFormat_Skip_Lambda() { |
| final BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| requireNonNull(this, () -> { |
| return String.format(TEMPLATE, mVar1, mVar2); |
| }); |
| } |
| } |
| |
| /** |
| * Measure overhead of a passing null-check that uses varargs to communicate |
| * a custom error message. |
| */ |
| @Test |
| public void timeFormat_Skip_Varargs() { |
| final BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| requireNonNull(this, TEMPLATE, mVar1, mVar2); |
| } |
| } |
| |
| private static <T> T requireNonNull(T obj, Supplier<String> messageSupplier) { |
| return obj; |
| } |
| |
| private static <T> T requireNonNull(T obj, String format, Object... args) { |
| return obj; |
| } |
| } |