Leaflet/spec/suites/geo/LatLngSpec.js

describe('LatLng', function() {
	describe('constructor', function() {
		it("should set lat and lng", function() {
			var a = new L.LatLng(25, 74);
			expect(a.lat).toEqual(25);
			expect(a.lng).toEqual(74);
	
			var a = new L.LatLng(-25, -74);
			expect(a.lat).toEqual(-25);
			expect(a.lng).toEqual(-74);
		});
		
		it("should clamp latitude to lie between -90 and 90", function() {
			var a = new L.LatLng(150, 0).lat;
			expect(a).toEqual(90);
			
			var b = new L.LatLng(-230, 0).lat;
			expect(b).toEqual(-90);
		});
		
		it("should clamp longtitude to lie between -180 and 180", function() {
			var a = new L.LatLng(0, 190).lng;
			expect(a).toEqual(-170);

			var b = new L.LatLng(0, 360).lng;
			expect(b).toEqual(0);
			
			var c = new L.LatLng(0, 380).lng;
			expect(c).toEqual(20);
	
			var d = new L.LatLng(0, -190).lng;
			expect(d).toEqual(170);
	
			var e = new L.LatLng(0, -360).lng;
			expect(e).toEqual(0);
	
			var f = new L.LatLng(0, -380).lng;
			expect(f).toEqual(-20);

			var g = new L.LatLng(0, 90).lng;
			expect(g).toEqual(90);

			var h = new L.LatLng(0, 180).lng;
			expect(h).toEqual(180);
	 });
		
		it("should not clamp latitude and longtitude if unbounded flag set to true", function() {
			var a = new L.LatLng(150, 0, true).lat;
			expect(a).toEqual(150);
			
			var b = new L.LatLng(-230, 0, true).lat;
			expect(b).toEqual(-230);
	
			var c = new L.LatLng(0, 250, true).lng;
			expect(c).toEqual(250);
	
			var d = new L.LatLng(0, -190, true).lng;
			expect(d).toEqual(-190);
		});
	});
	
	describe('#equals', function() {
		it("should return true if compared objects are equal within a certain margin", function() {
			var a = new L.LatLng(10, 20);
			var b = new L.LatLng(10 + 1.0E-10, 20 - 1.0E-10);
			expect(a.equals(b)).toBe(true);
		});
		
		it("should return false if compared objects are not equal within a certain margin", function() {
			var a = new L.LatLng(10, 20);
			var b = new L.LatLng(10, 23.3);
			expect(a.equals(b)).toBe(false);
		});
	});
});