add testEncodeInteger

example/rsocket-requester/src/test/java/com/alibaba/hessian/HessianTest.java

@@ -2,6 +2,7 @@
 
 import com.caucho.hessian.io.HessianSerializerInput;
 import com.caucho.hessian.io.HessianSerializerOutput;
+import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 import java.io.ByteArrayInputStream;
@@ -26,6 +27,16 @@ public void testEncode() throws Exception {
         System.out.println(content.length);
     }
 
+    @Test
+    public void testEncodeInteger() throws Exception {
+        ByteArrayOutputStream bos = new ByteArrayOutputStream();
+        HessianSerializerOutput output = new HessianSerializerOutput(bos);
+        output.writeObject(1);
+        output.flush();
+        content = bos.toByteArray();
+        Assertions.assertEquals(content[0], -111);
+    }
+
     @Test
     public void testDecode() throws Exception {
         testEncode();