BDS08 and BDS09 encoders

tests/test_encoder.py

@@ -0,0 +1,23 @@
+from pyModeS import encoder
+
+
+def test_identification():
+    msg = encoder.encode_adsb(
+        icao="406B90", typecode=4, capability=5, category=0, callsign="EZY85MH"
+    )
+    assert msg == "8D406B902015A678D4D220AA4BDA"
+
+
+def test_speed():
+    msg = encoder.encode_adsb(
+        icao="485020",
+        typecode=19,
+        capability=5,
+        speed_type="gs",
+        speed=159,
+        angle=182.88,
+        vertical_rate=-832,
+        vertical_rate_source="gnss",
+        gnss_baro_alt_diff=550,
+    )
+    assert msg == "8D485020994409940838175B284F"