/*
    * 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.lang3.function;
  
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.util.concurrent.atomic.AtomicBoolean;
  
  import org.apache.commons.lang3.AbstractLangTest;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link BooleanConsumer}.
   */
  public class BooleanConsumerTest extends AbstractLangTest {
  
      private BooleanConsumer accept(final BooleanConsumer consumer, final boolean expected) {
          consumer.accept(expected);
          return consumer;
      }
  
      @Test
      public void testAccept() {
          final AtomicBoolean aBool = new AtomicBoolean();
          accept(aBool::lazySet, true);
          assertTrue(aBool.get());
          accept(aBool::lazySet, false);
          assertFalse(aBool.get());
      }
  
      @Test
      public void testAndThen() throws Throwable {
          final BooleanConsumer nop = BooleanConsumer.nop();
          nop.andThen(nop);
          // Documented in Javadoc edge-case.
          assertThrows(NullPointerException.class, () -> nop.andThen(null));
  
          final AtomicBoolean aBool1 = new AtomicBoolean();
          final AtomicBoolean aBool2 = new AtomicBoolean();
  
          final BooleanConsumer bc = aBool1::lazySet;
          final BooleanConsumer composite = bc.andThen(aBool2::lazySet);
  
          composite.accept(true);
          assertTrue(aBool1.get());
          assertTrue(aBool2.get());
  
          composite.accept(false);
          assertFalse(aBool1.get());
          assertFalse(aBool2.get());
  
          // Check order
          final BooleanConsumer bad = value -> {
              throw new IllegalStateException();
          };
          final BooleanConsumer badComposite = bad.andThen(aBool2::lazySet);
  
          Assertions.assertThrows(IllegalStateException.class, () -> badComposite.accept(true));
          assertFalse(aBool2.get(), "Second consumer should not be invoked");
      }
  
  }