/*
    * Copyright (C) 2012 The Guava Authors
    *
    * 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.google.common.base;
  
  import com.google.caliper.Benchmark;
  import com.google.caliper.Param;
  
  /**
   * Some microbenchmarks for the {@link Objects.ToStringHelper} class.
   *
   * @author Osvaldo Doederlein
   */
  public class ToStringHelperBenchmark {
  
    @Param({"0", "2", "5", "10"}) int dataSize;
    private static final String NAME = "abcdefgh";
    private static final String NAME3 = Strings.repeat(NAME, 3);
  
    private static void addEntries(Objects.ToStringHelper helper) {
      helper
        .add(NAME, 10)
        .addValue(10L)
        .add(NAME, 3.14f)
        .addValue(3.14d)
        .add(NAME3, false)
        .add(NAME3, NAME3)
        .add(NAME3, 'x');
    }
  
    @Benchmark int toString(int reps) {
      int dummy = 0;
      for (int i = 0; i < reps; i++) {
        Objects.ToStringHelper helper = Objects.toStringHelper("klass").omitNullValues();
        for (int j = 0; j < dataSize; ++j) {
          addEntries(helper);
        }
        dummy ^= helper
            .toString().hashCode();
      }
      return dummy;
    }
  }