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

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

/**
 * Copyright 2016 Signal K <info@signalk.org> and contributors.
 *
 * 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'))

describe('VWR', () => {
  it('Converts OK using individual parser', () => {
    const delta = new Parser().parse('$IIVWR,75,R,1.0,N,0.51,M,1.85,K*6C')

    delta.updates[0].values.should.contain.an.item.with.property(
      'path',
      'environment.wind.angleApparent'
    )
    delta.updates[0].values.should.contain.an.item.with.property(
      'value',
      1.30899693929463
    )
    delta.updates[0].values.should.contain.an.item.with.property(
      'path',
      'environment.wind.speedApparent'
    )
    delta.updates[0].values.should.contain.an.item.with.property(
      'value',
      0.5144445747704034
    )
  })

  it('Handles shorter valid sentences', () => {
    const delta = new Parser().parse('$IIVWR,024,L,018,N,,,,*5e')

    delta.updates[0].values.should.contain.an.item.with.property(
      'path',
      'environment.wind.angleApparent'
    )
    delta.updates[0].values.should.contain.an.item.with.property(
      'value',
      -0.41887902057428156
    )
    delta.updates[0].values.should.contain.an.item.with.property(
      'path',
      'environment.wind.speedApparent'
    )
    delta.updates[0].values.should.contain.an.item.with.property(
      'value',
      9.260002345867262
    )
  })

  it("Doesn't choke on empty sentences", () => {
    const delta = new Parser().parse('$IIVWR,,,,,,,,*53')
    should.equal(delta, null)
  })
})