1 /* 2 * Copyright (C) 2012 The Guava Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.common.base; 18 19 import com.google.caliper.Benchmark; 20 import com.google.caliper.Param; 21 22 /** 23 * Some microbenchmarks for the {@link MoreObjects.ToStringHelper} class. 24 * 25 * @author Osvaldo Doederlein 26 */ 27 public class ToStringHelperBenchmark { 28 29 @Param({"0", "2", "5", "10"}) 30 int dataSize; 31 32 private static final String NAME = "abcdefgh"; 33 private static final String NAME3 = Strings.repeat(NAME, 3); 34 addEntries(MoreObjects.ToStringHelper helper)35 private static void addEntries(MoreObjects.ToStringHelper helper) { 36 helper 37 .add(NAME, 10) 38 .addValue(10L) 39 .add(NAME, 3.14f) 40 .addValue(3.14d) 41 .add(NAME3, false) 42 .add(NAME3, NAME3) 43 .add(NAME3, 'x'); 44 } 45 46 @Benchmark toString(int reps)47 int toString(int reps) { 48 int dummy = 0; 49 for (int i = 0; i < reps; i++) { 50 MoreObjects.ToStringHelper helper = MoreObjects.toStringHelper("klass").omitNullValues(); 51 for (int j = 0; j < dataSize; ++j) { 52 addEntries(helper); 53 } 54 dummy ^= helper.toString().hashCode(); 55 } 56 return dummy; 57 } 58 } 59