/*
    * 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.input;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.mockito.Mockito.never;
  import static org.mockito.Mockito.spy;
  import static org.mockito.Mockito.verify;
  
  import java.io.IOException;
  import java.io.Reader;
  
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link CloseShieldReader}.
   */
  public class CloseShieldReaderTest {
  
      private String data;
  
      private Reader original;
  
      private Reader shielded;
  
      @BeforeEach
      public void setUp() {
          data = "xyz";
          original = spy(new CharSequenceReader(data));
          shielded = CloseShieldReader.wrap(original);
      }
  
      @Test
      public void testClose() throws IOException {
          shielded.close();
          verify(original, never()).close();
          final char[] cbuf = new char[10];
          assertEquals(-1, shielded.read(cbuf, 0, 10), "read(cbuf, off, len)");
          assertEquals(data.length(), original.read(cbuf, 0, 10), "read(cbuf, off, len)");
          assertEquals(data, new String(cbuf, 0, data.length()));
      }
  
  }