Improve DF16 decoding

Author: Douglasdc3

src/main/java/aero/t2s/modes/constants/AcasReplyInformation.java

@@ -12,11 +12,11 @@ public enum  AcasReplyInformation {
     /**
      * 2 - reserved for ACAS
      */
-    RESERVED2,
+    ACAS_RA_INHIBIT,
     /**
      * 3 - reserved for ACAS
      */
-    RESERVED3,
+    ACAS_RA_VERTICAL_ONLY,
     /**
      * 4 - reserved for ACAS
      */
@@ -32,7 +32,7 @@ public enum  AcasReplyInformation {
     /**
      * 7 - reserved for ACAS
      */
-    RESERVED7,
+    ACAS_RA_FULL,
     /**
      * 8 - no maximum airspeed data available
      */

src/test/java/aero/t2s/modes/decoder/df/DF0Test.java

@@ -43,7 +43,7 @@ void it_decodes_sensitivity_level()
     void it_decodes_reply_information()
     {
         df0 = new DF0(BinaryHelper.stringToByteArray("02E194979F2C4B")).decode();
-        assertEquals(AcasReplyInformation.RESERVED3, df0.getReplyInformation());
+        assertEquals(AcasReplyInformation.ACAS_RA_VERTICAL_ONLY, df0.getReplyInformation());
     }
 
     @Test

src/test/java/aero/t2s/modes/decoder/df/DfRealMessageTest.java

@@ -1,7 +1,7 @@
 package aero.t2s.modes.decoder.df;
 
 import aero.t2s.modes.BinaryHelper;
-import aero.t2s.modes.constants.SelectedAltitudeSource;
+import aero.t2s.modes.constants.*;
 import aero.t2s.modes.database.ModeSDatabase;
 import aero.t2s.modes.decoder.Decoder;
 import aero.t2s.modes.decoder.UnknownDownlinkFormatException;
@@ -339,6 +339,32 @@ public void test_df20_bds50_48418A() throws UnknownDownlinkFormatException {
         assertEquals(354, bds.getTrueTrack(), 0.1);
     }
 
+    @Test
+    public void test_df16_bds50_48418A() throws UnknownDownlinkFormatException {
+        DownlinkFormat df = testMessage("80C18819584195384EF8505941FD");
+
+        assertInstanceOf(DF16.class, df);
+        DF16 df16 = (DF16) df;
+        assertEquals("02A198", df.getIcao()); // Military / corrupt transponder
+        assertEquals(12025, df16.getAltitude().getAltitude());
+
+        assertEquals(VerticalStatus.AIRBORNE, df16.getVerticalStatus());
+        assertEquals(AcasSensitivity.LEVEL6, df16.getSensitivity());
+        assertEquals(AcasReplyInformation.ACAS_RA_VERTICAL_ONLY, df16.getReplyInformation());
+        assertFalse(df16.getResolutionAdvisory().isActive());
+        assertFalse(df16.getResolutionAdvisory().isRequiresCorrectionUpwards());
+        assertFalse(df16.getResolutionAdvisory().isRequiresCorrectionDownwards());
+        assertFalse(df16.getResolutionAdvisory().isRequiresPositiveClimb());
+        assertFalse(df16.getResolutionAdvisory().isRequiresPositiveDescend());
+        assertFalse(df16.getResolutionAdvisory().isRequiresCrossing());
+        assertFalse(df16.getResolutionAdvisory().isSenseReversal());
+
+        assertFalse(df16.isMultipleThreats());
+        assertFalse(df16.isRANotPassAbove());
+        assertFalse(df16.isRANotPassBelow());
+        assertFalse(df16.isRANotTurnLeft());
+        assertFalse(df16.isRANotTurnRight());
+    }
 
     private DownlinkFormat testMessage(String message) throws UnknownDownlinkFormatException {
         Decoder decoder = new Decoder(new HashMap<>(), 50, 2, ModeSDatabase.createDatabase());