haversine-geolocation/spec/haversine-geolocation.spec.ts

Get distances between two points or get closest position to current point. Based on the Haversine Formula

import HaversineGeolocation from "../src/index";

describe("Test for Haversine-Geolocation", () => {
    let distance: number = 0;
    let distanceBetween: number = 0;
    let closestPosition = null;

    beforeEach(() => {
        const points = [
            {
                latitude: 61.5322204,
                longitude: 28.7515963
            },
            {
                latitude: 51.9971208,
                longitude: 22.1455439
            },
            {
                latitude: 45.3571207,
                longitude: 30.3435456
            },
            {
                latitude: 51.2971208,
                longitude: 22.0455439
            },
            {
                latitude: 62.0971208,
                longitude: 13.0455439
            },
        ];

        distance = HaversineGeolocation._haversine(
            points[0].latitude,
            points[0].longitude,
            points[1].latitude,
            points[1].longitude
        );

        distanceBetween = HaversineGeolocation.getDistanceBetween(points[0], points[1], 'mi');
        closestPosition = HaversineGeolocation.getClosestPosition(points[0], points);
    });

    it("_haversine should return value greater than zero", () => {
        expect(distance).toBeGreaterThan(0)
    });

    it("getDistanceBetween should return value greater than zero", () => {
        expect(distanceBetween).toBeGreaterThan(0)
    });

    it("closestPosition should return an truthy value", () => {
        expect(closestPosition.hasOwnProperty('haversine')).toBeTruthy()
    });
});