/*
    * Copyright (C) 2011 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.BeforeExperiment;
  import com.google.caliper.Benchmark;
  import com.google.caliper.Param;
  import com.google.common.collect.Iterables;
  
  /**
   * Microbenchmark for {@link Splitter#on} with char vs String with length == 1.
   *
   * @author Paul Lindner
   */
  public class SplitterBenchmark {
    // overall size of string
    @Param({"1", "10", "100", "1000"}) int length;
    // Number of matching strings
    @Param({"xxxx", "xxXx", "xXxX", "XXXX"}) String text;
  
    private String input;
  
    private static final Splitter CHAR_SPLITTER = Splitter.on('X');
    private static final Splitter STRING_SPLITTER = Splitter.on("X");
  
    @BeforeExperiment void setUp() {
      input = Strings.repeat(text, length);
    }
  
    @Benchmark void charSplitter(int reps) {
      int total = 0;
  
      for (int i = 0; i < reps; i++) {
        total += Iterables.size(CHAR_SPLITTER.split(input));
      }
    }
  
    @Benchmark void stringSplitter(int reps) {
      int total = 0;
  
      for (int i = 0; i < reps; i++) {
       total += Iterables.size(STRING_SPLITTER.split(input));
      }
    }
  }