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.bifromq.basecrdt.core.internal;
  
  import static org.testng.AssertJUnit.assertEquals;
  
  import com.google.protobuf.ByteString;
  import java.util.Random;
  import org.testng.annotations.Test;
  
  public class VarLongTest {
  
      @Test
      public void testZero() {
          long value = 0L;
          ByteString encoded = VarLong.encode(value);
          long decoded = VarLong.decode(encoded);
          assertEquals(value, decoded);
      }
  
      @Test
      public void testPositiveNumbers() {
          long[] testValues = {1L, 127L, 128L, 1024L, 1_000_000L, Long.MAX_VALUE / 2};
          for (long value : testValues) {
              ByteString encoded = VarLong.encode(value);
              long decoded = VarLong.decode(encoded);
              assertEquals(value, decoded);
          }
      }
  
      @Test
      public void testMaxValue() {
          long value = Long.MAX_VALUE;
          ByteString encoded = VarLong.encode(value);
          long decoded = VarLong.decode(encoded);
          assertEquals(value, decoded);
      }
  
      @Test
      public void testRandomValues() {
          Random random = new Random();
          for (int i = 0; i < 1000; i++) {
              long value = random.nextLong() & Long.MAX_VALUE;
              ByteString encoded = VarLong.encode(value);
              long decoded = VarLong.decode(encoded);
              assertEquals(value, decoded);
          }
      }
  }