content: /*
   * Copyright 2014-2025 Real Logic Limited.
   *
   * Licensed 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
   *
   * https://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.agrona.io;
  
  import org.agrona.DirectBuffer;
  import org.agrona.concurrent.UnsafeBuffer;
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  class DirectBufferInputStreamTest
  {
      private static final int END_OF_STREAM_MARKER = -1;
  
      @Test
      void shouldCorrectlyConvertBytesToPositiveIntegers()
      {
          final byte[] data = { (byte)-1, 0 };
          final DirectBuffer buffer = new UnsafeBuffer(data);
          final DirectBufferInputStream inputStream = new DirectBufferInputStream(buffer);
  
          assertEquals(inputStream.read(), 255);
      }
  
      @Test
      void shouldReturnMinusOneOnEndOfStream()
      {
          final byte[] data = { 1, 2 };
  
          final DirectBuffer buffer = new UnsafeBuffer(data);
          final DirectBufferInputStream inputStream = new DirectBufferInputStream(buffer);
  
          assertEquals(inputStream.read(), 1);
          assertEquals(inputStream.read(), 2);
          assertEquals(inputStream.read(), END_OF_STREAM_MARKER);
      }
  }
  