1 files changed, 8 insertions, 0 deletions
diff --git a/test/org/traccar/helper/ChecksumTest.java b/test/org/traccar/helper/ChecksumTest.java
index c37eda88d..737b65c62 100644
--- a/test/org/traccar/helper/ChecksumTest.java
+++ b/test/org/traccar/helper/ChecksumTest.java
@@ -4,6 +4,7 @@ import org.jboss.netty.buffer.ChannelBuffer;
 import org.jboss.netty.buffer.ChannelBuffers;
 import org.junit.Assert;
 import org.junit.Test;
+import org.traccar.protocol.Arnavi4ProtocolDecoder;
 
 import java.nio.charset.StandardCharsets;
 
@@ -28,4 +29,11 @@ public class ChecksumTest {
         Assert.assertEquals(0, Checksum.luhn(63070019470771L));
     }
 
+    @Test
+    public void testModulo256() {
+        Assert.assertEquals(0x00, Checksum.modulo256((byte)0x00));
+        Assert.assertEquals(0x00, Checksum.modulo256((byte)0x00, (byte)0x00, (byte)0x00));
+        Assert.assertEquals(0x06, Checksum.modulo256((byte)0x01, (byte)0x02, (byte)0x03));
+    }
+
 }