/*
    * 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.commons.io.function;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  import java.io.IOException;
  import java.io.UncheckedIOException;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.concurrent.atomic.AtomicReference;
  
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link IOBiConsumer}.
   */
  public class IOBiConsumerTest {
  
      @Test
      public void testAccept() throws IOException {
          final AtomicReference<String> ref = new AtomicReference<>();
          final IOBiConsumer<String, Integer> biConsumer = (s, i) -> ref.set(s + i);
          biConsumer.accept("A", 1);
          assertEquals("A1", ref.get());
      }
  
      @Test
      public void testAndThen() throws IOException {
          final AtomicReference<String> ref = new AtomicReference<>();
          final IOBiConsumer<String, Integer> biConsumer1 = (s, i) -> ref.set(s + i);
          final IOBiConsumer<String, Integer> biConsumer2 = (s, i) -> ref.set(ref.get() + i + s);
          biConsumer1.andThen(biConsumer2).accept("B", 2);
          assertEquals("B22B", ref.get());
      }
  
      @Test
      public void testAsBiConsumer() {
          final Map<String, Integer> map = new HashMap<>();
          map.put("a", 1);
          assertThrows(UncheckedIOException.class, () -> map.forEach(TestConstants.THROWING_IO_BI_CONSUMER.asBiConsumer()));
          final AtomicReference<String> ref = new AtomicReference<>();
          final IOBiConsumer<String, Integer> consumer1 = (t, u) -> ref.set(t + u);
          map.forEach(consumer1.asBiConsumer());
          assertEquals("a1", ref.get());
      }
  
      @Test
      public void testNoopIOConsumer() throws IOException {
          IOBiConsumer.noop().accept(null, null);
      }
  
  }