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 org.apache.cassandra.io.util;
  
  import org.junit.Test;
  
  import accord.utils.Gens;
  import org.assertj.core.api.Assertions;
  
  import static accord.utils.Property.qt;
  
  public class DataOutputInputPlusTest
  {
      @Test
      public void leastSignificantBytes()
      {
          @SuppressWarnings({ "resource", "IOResourceOpenedButNotSafelyClosed" }) DataOutputBuffer output = new DataOutputBuffer();
          qt().forAll(Gens.longs().all()).check(expected -> {
              output.clear();
  
              int expectedSize = numberOfBytes(expected);
              output.writeLeastSignificantBytes(expected, expectedSize);
              Assertions.assertThat(output.getLength()).describedAs("The serialized size and bytes written do not match").isEqualTo(expectedSize);
              @SuppressWarnings({ "resource", "IOResourceOpenedButNotSafelyClosed" }) DataInputBuffer in = new DataInputBuffer(output.unsafeGetBufferAndFlip(), false);
              long read = in.readLeastSignificantBytes(expectedSize);
              Assertions.assertThat(read).describedAs("The deserialized output does not match the serialized input").isEqualTo(expected);
          });
      }
  
      private static int numberOfBytes(long value)
      {
          return (64 + 7 - Long.numberOfLeadingZeros(value)) / 8;
      }
  }
  