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 com.aliyun.oss.common.io;
  
  import com.aliyun.oss.common.comm.io.FixedLengthInputStream;
  import org.junit.Assert;
  import org.junit.Test;
  
  import java.io.ByteArrayInputStream;
  import java.io.IOException;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertTrue;
  
  public class FixedLengthInputStreamTest {
      @Test
      public void testFixedLengthInputStream() {
          String data = "OssService";
          ByteArrayInputStream byteInput = new ByteArrayInputStream(data.getBytes());
          FixedLengthInputStream input = new FixedLengthInputStream(byteInput, data.length());
  
          assertEquals(byteInput, input.getWrappedInputStream());
          assertEquals(data.length(), input.getLength());
  
          input.setLength(data.length());
  
          input.setWrappedInputStream(null);
          assertEquals(null, input.getWrappedInputStream());
  
          try {
              input.setWrappedInputStream(byteInput);
              input.skip(3);
              int ret = input.read();
              assertEquals('S', ret);
              input.reset();
          } catch (IOException e) {
              assertTrue(false);
          }
  
          try {
              input = new FixedLengthInputStream(null, 10);
              assertTrue(false);
          } catch (Exception e) {
              assertTrue(true);
          }
  
          try {
              input = new FixedLengthInputStream(byteInput, -1);
              assertTrue(false);
          } catch (Exception e) {
              assertTrue(true);
          }
      }
  }
  