Add Gator content encoder and test snippets

2 files changed, 17 insertions, 5 deletions

diff --git a/src/main/java/org/traccar/protocol/GatorProtocolEncoder.java b/src/main/java/org/traccar/protocol/GatorProtocolEncoder.java
index 0d4353c8f..125031eee 100644
--- a/src/main/java/org/traccar/protocol/GatorProtocolEncoder.java
+++ b/src/main/java/org/traccar/protocol/GatorProtocolEncoder.java
@@ -75,8 +75,14 @@ public class GatorProtocolEncoder extends BaseProtocolEncoder {
     }
 
     private ByteBuf encodeContent(long deviceId, String mainOrder, String content) {
-        // FIXME: implement this method
-        return null;
+        String pseudoIPAddress = encodeId(deviceId);
+        int length = 4 + 1 + 1; // ip 4 bytes, calibration byte and end byte
+        String hexStringLength = String.format("%02X", length);
+
+        String packet = "2424" + mainOrder + "00" + hexStringLength + pseudoIPAddress;
+        String calibration = getCalibrationByteFromHexString(packet);
+        packet = packet + calibration + "0D";
+        return Unpooled.wrappedBuffer(DataConverter.parseHex(packet));
     }
 
 
diff --git a/src/test/java/org/traccar/protocol/GatorProtocolEncoderTest.java b/src/test/java/org/traccar/protocol/GatorProtocolEncoderTest.java
index 7e8f51008..74ac35440 100644
--- a/src/test/java/org/traccar/protocol/GatorProtocolEncoderTest.java
+++ b/src/test/java/org/traccar/protocol/GatorProtocolEncoderTest.java
@@ -4,16 +4,22 @@ import org.junit.jupiter.api.Test;
 import org.traccar.ProtocolTest;
 import org.traccar.model.Command;
 
-import java.nio.charset.StandardCharsets;
-
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
 public class GatorProtocolEncoderTest extends ProtocolTest {
 
     @Test
-    void encodeId() throws  Exception {
+    void encodeId() throws Exception {
         var encoder = inject(new GatorProtocolEncoder(null));
         assertEquals("2008958C", encoder.encodeId(13332082112L));
+    }
 
+    @Test
+    public void testEncode() throws Exception {
+        var encoder = inject(new GatorProtocolEncoder(null));
+        Command command = new Command();
+        command.setDeviceId(13332082112L);
+        command.setType(Command.TYPE_ROLLCALL);
+        verifyCommand(encoder, command, binary("24243000062008958C070D"));
     }
 }