tests: add test for little endian MXPGN

test/mxpgn.js

@@ -88,4 +88,45 @@ describe('from mxpgn data converts', function () {
 
     fromPgn.parseString(mxpgn)
   })
+
+  it(`from little endian 129025 converts`, function (done) {
+    var mxpgn = '$MXPGN,01F801,2801,43E35D0CC48A30C1'
+    var expected = {
+      "pgn":129025,
+      "src":1,
+      "dst":255,
+      "prio":0,
+      "fields":{
+        "Latitude": -99.7576511,
+        "Longitude": 113.8973964,
+      },
+      "description":"Position, Rapid Update"
+    }
+
+    var fromPgn = new FromPgn({littleEndianMXPGN:true})
+
+    fromPgn.on('error', (pgn, error) => {
+      console.error(`Error parsing ${pgn.pgn} ${error}`)
+      console.error(error.stack)
+      done(error)
+    })
+
+    fromPgn.on('warning', (pgn, warning) => {
+      done(new Error(`${pgn.pgn} ${warning}`))
+    })
+
+    fromPgn.on('pgn', (pgn) => {
+      try {
+        //console.log(JSON.stringify(pgn))
+        delete pgn.input
+        delete pgn.timestamp
+        pgn.should.jsonEqual(expected)
+        done()
+      } catch ( e ) {
+        done(e)
+      }
+    })
+
+    fromPgn.parseString(mxpgn)
+  })
 })