@signalk/nmea0183-signalk/test/GNS.js

A node.js/javascript parser for NMEA0183 sentences. Sentences are parsed to Signal K format.

'use strict'

/**
 * Copyright 2022 Signal K.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

const Parser = require('../lib')
const chai = require('chai')
const should = chai.Should()

chai.use(require('chai-things'))
chai.use(require('@signalk/signalk-schema').chaiModule)

const toFull = require('./toFull')

describe('GNS', () => {
  it('Converts OK using individual parser', () => {
    const delta = new Parser().parse(
      '$GPGNS,111648.00,0235.0379,S,04422.1450,W,ANN,12,0.8,8.5,-22.3,,,S*5D'
    )

    // Paths
    delta.updates[0].values.should.contain.an.item.with.property(
      'path',
      'navigation.position'
    )
    delta.updates[0].values.should.contain.an.item.with.property(
      'path',
      'navigation.gnss.methodQuality'
    )
    delta.updates[0].values.should.contain.an.item.with.property(
      'path',
      'navigation.gnss.satellites'
    )
    delta.updates[0].values.should.contain.an.item.with.property(
      'path',
      'navigation.gnss.antennaAltitude'
    )
    delta.updates[0].values.should.contain.an.item.with.property(
      'path',
      'navigation.gnss.horizontalDilution'
    )
    delta.updates[0].values.should.contain.an.item.with.property(
        'path',
        'navigation.gnss.geoidalSeparation'
      )
    delta.updates[0].values.should.contain.an.item.with.property(
      'path',
      'navigation.gnss.differentialAge'
    )
    delta.updates[0].values.should.contain.an.item.with.property(
      'path',
      'navigation.gnss.differentialReference'
    )
    delta.updates[0].values.should.contain.an.item.with.property(
        'path',
        'navigation.gnss.status'
      )

    // Values
    delta.updates[0].values[0].value.should.deep.equal({
      longitude: -44.369083333333336,
      latitude: -2.583965,
    })
    delta.updates[0].values[1].value.should.deep.equal({"GPS":"Autonomous","GLONASS":"No Valid Fix","Galileo":"No Valid Fix"})
    delta.updates[0].values[2].value.should.equal(12)
    delta.updates[0].values[3].value.should.equal(8.5)
    delta.updates[0].values[4].value.should.equal(0.8)
    delta.updates[0].values[5].value.should.equal(-22.3)
    delta.updates[0].values[6].value.should.equal(0)
    delta.updates[0].values[7].value.should.equal(0)
    delta.updates[0].values[8].value.should.equal("Safe")
    // toFull(delta).should.be.validSignalK
  })

  it("Doesn't choke on empty sentences", () => {
    const delta = new Parser().parse('$GPGNS,,,,,,,,,,,,,S*32')
    should.equal(delta, null)
  })
})