136 lines
3.7 KiB
JavaScript
136 lines
3.7 KiB
JavaScript
// Copyright IBM Corp. 2014,2016. All Rights Reserved.
|
|
// Node module: loopback-datasource-juggler
|
|
// This file is licensed under the MIT License.
|
|
// License text available at https://opensource.org/licenses/MIT
|
|
|
|
/* global describe,it */
|
|
/* jshint expr:true */
|
|
|
|
'use strict';
|
|
|
|
require('should');
|
|
|
|
var GeoPoint = require('../lib/geo').GeoPoint;
|
|
var DELTA = 0.0000001;
|
|
|
|
describe('GeoPoint', function() {
|
|
describe('constructor', function() {
|
|
it('should support a valid array', function() {
|
|
var point = new GeoPoint([-34, 150]);
|
|
|
|
point.lat.should.equal(-34);
|
|
point.lng.should.equal(150);
|
|
});
|
|
|
|
it('should support a valid object', function() {
|
|
var point = new GeoPoint({lat: -34, lng: 150});
|
|
|
|
point.lat.should.equal(-34);
|
|
point.lng.should.equal(150);
|
|
});
|
|
|
|
it('should support valid string geo coordinates', function() {
|
|
var point = new GeoPoint('-34,150');
|
|
|
|
point.lat.should.equal(-34);
|
|
point.lng.should.equal(150);
|
|
});
|
|
|
|
it('should support coordinates as inline parameters', function() {
|
|
var point = new GeoPoint(-34, 150);
|
|
|
|
point.lat.should.equal(-34);
|
|
point.lng.should.equal(150);
|
|
});
|
|
|
|
it('should reject invalid parameters', function() {
|
|
/* jshint -W024 */
|
|
var fn = function() {
|
|
new GeoPoint('150,-34');
|
|
};
|
|
fn.should.throw();
|
|
|
|
fn = function() {
|
|
new GeoPoint('invalid_string');
|
|
};
|
|
fn.should.throw();
|
|
|
|
fn = function() {
|
|
new GeoPoint([150, -34]);
|
|
};
|
|
fn.should.throw();
|
|
|
|
fn = function() {
|
|
new GeoPoint({
|
|
lat: 150,
|
|
lng: null,
|
|
});
|
|
};
|
|
fn.should.throw();
|
|
|
|
fn = function() {
|
|
new GeoPoint(150, -34);
|
|
};
|
|
fn.should.throw();
|
|
|
|
fn = function() {
|
|
new GeoPoint();
|
|
};
|
|
fn.should.throw();
|
|
});
|
|
});
|
|
|
|
describe('toString()', function() {
|
|
it('should return a string in the form "lat,lng"', function() {
|
|
var point = new GeoPoint({lat: -34, lng: 150});
|
|
point.toString().should.equal('-34,150');
|
|
});
|
|
});
|
|
|
|
describe('distance calculation between two points', function() {
|
|
var here = new GeoPoint({lat: 40.77492964101182, lng: -73.90950187151662});
|
|
var there = new GeoPoint({lat: 40.7753227, lng: -73.909217});
|
|
|
|
it('should return value in miles by default', function() {
|
|
var distance = GeoPoint.distanceBetween(here, there);
|
|
distance.should.be.a.Number;
|
|
distance.should.be.approximately(0.03097916611592679, DELTA);
|
|
});
|
|
|
|
it('should return value using specified unit', function() {
|
|
/* Supported units:
|
|
* - `radians`
|
|
* - `kilometers`
|
|
* - `meters`
|
|
* - `miles`
|
|
* - `feet`
|
|
* - `degrees`
|
|
*/
|
|
|
|
var distance = here.distanceTo(there, {type: 'radians'});
|
|
distance.should.be.a.Number;
|
|
distance.should.be.approximately(0.000007825491914348416, DELTA);
|
|
|
|
distance = here.distanceTo(there, {type: 'kilometers'});
|
|
distance.should.be.a.Number;
|
|
distance.should.be.approximately(0.04985613511367009, DELTA);
|
|
|
|
distance = here.distanceTo(there, {type: 'meters'});
|
|
distance.should.be.a.Number;
|
|
distance.should.be.approximately(49.856135113670085, DELTA);
|
|
|
|
distance = here.distanceTo(there, {type: 'miles'});
|
|
distance.should.be.a.Number;
|
|
distance.should.be.approximately(0.03097916611592679, DELTA);
|
|
|
|
distance = here.distanceTo(there, {type: 'feet'});
|
|
distance.should.be.a.Number;
|
|
distance.should.be.approximately(163.56999709209347, DELTA);
|
|
|
|
distance = here.distanceTo(there, {type: 'degrees'});
|
|
distance.should.be.a.Number;
|
|
distance.should.be.approximately(0.0004483676593058972, DELTA);
|
|
});
|
|
});
|
|
});
|