content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements. See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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 org.apache.kafka.test;
  
  import org.apache.kafka.streams.kstream.Reducer;
  
  public class MockReducer {
  
      private static class StringAdd implements Reducer<String> {
  
          @Override
          public String apply(final String value1, final String value2) {
              return value1 + "+" + value2;
          }
      }
  
      private static class StringRemove implements Reducer<String> {
  
          @Override
          public String apply(final String value1, final String value2) {
              return value1 + "-" + value2;
          }
      }
  
  
      private static class IntegerAdd implements Reducer<Integer> {
  
          @Override
          public Integer apply(final Integer value1, final Integer value2) {
              return value1 + value2;
          }
      }
  
      private static class IntegerSubtract implements Reducer<Integer> {
  
          @Override
          public Integer apply(final Integer value1, final Integer value2) {
              return value1 - value2;
          }
      }
  
      public static final Reducer<String> STRING_ADDER = new StringAdd();
  
      public static final Reducer<String> STRING_REMOVER = new StringRemove();
  
      public static final Reducer<Integer> INTEGER_ADDER = new IntegerAdd();
  
      public static final Reducer<Integer> INTEGER_SUBTRACTOR = new IntegerSubtract();
  }
  