content: package com.alibaba.fastjson2.jsonb.basic;
  
  import com.alibaba.fastjson2.JSONB;
  import org.junit.jupiter.api.Test;
  
  import java.util.Arrays;
  
  import static com.alibaba.fastjson2.JSONB.Constants.BC_BINARY;
  import static com.alibaba.fastjson2.JSONB.Constants.BC_INT32_NUM_0;
  import static org.junit.jupiter.api.Assertions.assertArrayEquals;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  public class BinaryTest {
      @Test
      public void test() {
          byte[] bytes = JSONB.toBytes(new byte[0]);
          assertEquals(2, bytes.length);
          assertEquals(BC_BINARY, bytes[0]);
          assertEquals(BC_INT32_NUM_0, bytes[1]);
  
          byte[] parsed = (byte[]) JSONB.parse(bytes);
          assertEquals(0, parsed.length);
      }
  
      @Test
      public void testN() {
          for (int i = 0; i <= 47; i++) {
              byte[] value = new byte[i];
              Arrays.fill(value, (byte) 1);
  
              byte[] bytes = JSONB.toBytes(value);
              assertEquals(2 + i, bytes.length);
              assertEquals(BC_BINARY, bytes[0]);
              assertEquals(i, bytes[1]); // length
  
              byte[] parsed = (byte[]) JSONB.parse(bytes);
              assertArrayEquals(value, parsed);
          }
      }
  }
  