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test: cover jt808 gps mileage extension

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lingniu
2026-07-01 08:29:21 +08:00
parent bb6ffa86fd
commit a08a132a3a
1 changed files with 35 additions and 0 deletions
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35
modules/protocols/protocol-jt808/src/test/java/com/lingniu/ingest/protocol/jt808/codec/Jt808DecoderTest.java
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@@ -14,6 +14,7 @@ import com.lingniu.ingest.protocol.jt808.codec.parser.TerminalParamsReportBodyPa
import com.lingniu.ingest.protocol.jt808.codec.parser.UnregisterBodyParser;
import com.lingniu.ingest.protocol.jt808.codec.parser.RegisterBodyParser;
import com.lingniu.ingest.protocol.jt808.model.Jt808Body;
import com.lingniu.ingest.protocol.jt808.model.Jt808LocationAdditionalInfo;
import com.lingniu.ingest.protocol.jt808.model.Jt808Message;
import com.lingniu.ingest.protocol.jt808.model.Jt808MessageId;
import org.junit.jupiter.api.Test;
@@ -77,6 +78,31 @@ class Jt808DecoderTest {
assertThat(loc.extensionItems().get(0x30)).containsExactly(88);
}
@Test
void decodesForwardedLocationFrameGpsMileageExtension() {
byte[] framed = hex("""
7E020000320133077954250001000000000048000301D2C4C707376139000A00E6004F260630162357
01040001900C2504000000000202000030011F31010F867E
""");
byte[] unescaped = Jt808Escape.unescape(framed, 1, framed.length - 2);
Jt808Body.Location loc = (Jt808Body.Location) decoder.decode(ByteBuffer.wrap(unescaped)).body();
assertThat(loc.longitude()).isEqualTo(121.069881);
assertThat(loc.latitude()).isEqualTo(30.590151);
assertThat(loc.speedKmh()).isEqualTo(23.0);
assertThat(loc.deviceTime().toString()).isEqualTo("2026-06-30T08:23:57Z");
assertThat(loc.extensionItems()).containsOnlyKeys(0x01, 0x25, 0x02, 0x30, 0x31);
assertThat(loc.extensionItems().get(0x01)).containsExactly(0x00, 0x01, (byte) 0x90, 0x0C);
assertThat(Jt808LocationAdditionalInfo.mileageKm(loc.extensionItems())).isEqualTo(10241.2);
assertThat(Jt808LocationAdditionalInfo.decode(loc.extensionItems()))
.containsEntry("jt808.extra.mileage_km", "10241.2")
.containsEntry("jt808.extra.vehicle_signal_raw", "0")
.containsEntry("jt808.extra.fuel_l", "0")
.containsEntry("jt808.extra.network_signal_strength", "31")
.containsEntry("jt808.extra.gnss_satellite_count", "15");
}
@Test
void decodesSyntheticHeartbeatFrame() {
byte[] frame = buildFrame(Jt808MessageId.TERMINAL_HEARTBEAT, "123456789012", 0x0002, new byte[0]);
@@ -225,6 +251,15 @@ class Jt808DecoderTest {
return framed.toByteArray();
}
private static byte[] hex(String value) {
String compact = value.replaceAll("\\s+", "");
byte[] out = new byte[compact.length() / 2];
for (int i = 0; i < out.length; i++) {
out[i] = (byte) Integer.parseInt(compact.substring(i * 2, i * 2 + 2), 16);
}
return out;
}
private static void writeU16(ByteArrayOutputStream os, int v) {
os.write((v >> 8) & 0xFF);
os.write(v & 0xFF);