test.js

import {strictEqual as eql, ok} from 'node:assert'
import {fetchPosition} from './lib/fetch-position.js'

{
	const _ = await fetchPosition()
	console.info(_)

	eql(typeof _.latitude, 'number')
	ok(!Number.isNaN(_.latitude))
	ok(_.latitude >= -90)
	ok(_.latitude <= 90)

	eql(typeof _.longitude, 'number')
	ok(!Number.isNaN(_.longitude))
	ok(_.longitude >= -180)
	ok(_.longitude <= 180)

	eql(typeof _.altitude, 'number')
	ok(!Number.isNaN(_.altitude))
	ok(_.altitude >= -5000)
	ok(_.altitude <= 15000)

	eql(typeof _.speed, 'number')
	ok(!Number.isNaN(_.speed))
	ok(_.speed >= 0)
	ok(_.speed <= 1500)

	// todo: _.cmg

	ok(Number.isInteger(_.nrOfSatellites))
	ok(_.nrOfSatellites >= 0)
	ok(_.nrOfSatellites <= 100)

	// todo: _.mode

	console.info('looks good ✔︎')
}