119 lines
3.3 KiB
JavaScript
119 lines
3.3 KiB
JavaScript
describe('LatLng', function() {
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describe('constructor', function() {
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it("should set lat and lng", function() {
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var a = new L.LatLng(25, 74);
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expect(a.lat).toEqual(25);
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expect(a.lng).toEqual(74);
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var a = new L.LatLng(-25, -74);
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expect(a.lat).toEqual(-25);
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expect(a.lng).toEqual(-74);
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});
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it('should throw error if invalid lat or lng', function () {
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expect(function () {
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var a = new L.LatLng(NaN, NaN);
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}).toThrow();
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});
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});
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describe('#equals', function() {
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it("should return true if compared objects are equal within a certain margin", function() {
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var a = new L.LatLng(10, 20);
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var b = new L.LatLng(10 + 1.0E-10, 20 - 1.0E-10);
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expect(a.equals(b)).toBe(true);
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});
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it("should return false if compared objects are not equal within a certain margin", function() {
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var a = new L.LatLng(10, 20);
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var b = new L.LatLng(10, 23.3);
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expect(a.equals(b)).toBe(false);
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});
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it('should return false if passed non-valid object', function () {
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var a = new L.LatLng(10, 20);
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expect(a.equals(null)).toBe(false);
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});
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});
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describe('#wrap', function () {
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it("#wrap should wrap longitude to lie between -180 and 180 by default", function() {
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var a = new L.LatLng(0, 190).wrap().lng;
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expect(a).toEqual(-170);
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var b = new L.LatLng(0, 360).wrap().lng;
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expect(b).toEqual(0);
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var c = new L.LatLng(0, 380).wrap().lng;
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expect(c).toEqual(20);
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var d = new L.LatLng(0, -190).wrap().lng;
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expect(d).toEqual(170);
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var e = new L.LatLng(0, -360).wrap().lng;
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expect(e).toEqual(0);
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var f = new L.LatLng(0, -380).wrap().lng;
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expect(f).toEqual(-20);
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var g = new L.LatLng(0, 90).wrap().lng;
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expect(g).toEqual(90);
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var h = new L.LatLng(0, 180).wrap().lng;
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expect(h).toEqual(180);
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});
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it("#wrap should wrap longitude within the given range", function() {
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var a = new L.LatLng(0, 190).wrap(-100, 100).lng;
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expect(a).toEqual(-10);
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});
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});
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describe('#toString', function () {
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it('should format to string', function () {
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var a = new L.LatLng(10.333333333, 20.2222222);
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expect(a.toString(3)).toEqual('LatLng(10.333, 20.222)');
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});
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});
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describe('#distanceTo', function () {
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it('should calculate distance in meters', function () {
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var a = new L.LatLng(50.5, 30.5);
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var b = new L.LatLng(50, 1);
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expect(Math.abs(Math.round(a.distanceTo(b) / 1000) - 2084) < 5).toBe(true);
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});
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});
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describe('L.latLng factory', function () {
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it('should return LatLng instance as is', function () {
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var a = new L.LatLng(50, 30);
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expect(L.latLng(a)).toBe(a);
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});
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it('should accept an array of coordinates', function () {
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expect(L.latLng([50, 30])).toEqual(new L.LatLng(50, 30));
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});
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it('should pass null or undefined as is', function () {
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expect(L.latLng(undefined)).toBe(undefined);
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expect(L.latLng(null)).toBe(null);
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});
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it('should create a LatLng object from two coordinates', function () {
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expect(L.latLng(50, 30)).toEqual(new L.LatLng(50, 30));
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});
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it('should accept an object with lat/lng', function () {
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expect(L.latLng({lat: 50, lng: 30})).toEqual(new L.LatLng(50, 30));
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});
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it('should accept an object with lat/lon', function () {
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expect(L.latLng({lat: 50, lon: 30})).toEqual(new L.LatLng(50, 30));
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});
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});
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});
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