/*
    * 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.output;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  import java.io.IOException;
  import java.io.OutputStream;
  
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link CloseShieldOutputStream}.
   */
  public class CloseShieldOutputStreamTest {
  
      private ByteArrayOutputStream original;
  
      private OutputStream shielded;
  
      private boolean closed;
  
      @BeforeEach
      public void setUp() {
          original = new ByteArrayOutputStream() {
              @Override
              public void close() {
                  closed = true;
              }
          };
          shielded = CloseShieldOutputStream.wrap(original);
          closed = false;
      }
  
      @Test
      public void testClose() throws IOException {
          shielded.close();
          assertFalse(closed, "closed");
          assertThrows(IOException.class, () -> shielded.write('x'), "write(b)");
          original.write('y');
          assertEquals(1, original.size());
          assertEquals('y', original.toByteArray()[0]);
      }
  
  }