| 1 | import LngLat from './lng_lat';
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| 2 | import MercatorCoordinate, {mercatorScale} from './mercator_coordinate';
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| 3 |
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| 4 | describe('LngLat', () => {
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| 5 | test('#constructor', () => {
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| 6 | expect(new MercatorCoordinate(0, 0) instanceof MercatorCoordinate).toBeTruthy();
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| 7 | expect(new MercatorCoordinate(0, 0, 0) instanceof MercatorCoordinate).toBeTruthy();
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| 8 | });
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| 9 |
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| 10 | test('#fromLngLat', () => {
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| 11 | const nullIsland = new LngLat(0, 0);
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| 12 | expect(MercatorCoordinate.fromLngLat(nullIsland)).toEqual({x: 0.5, y: 0.5, z: 0});
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| 13 | });
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| 14 |
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| 15 | test('#toLngLat', () => {
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| 16 | const dc = new LngLat(-77, 39);
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| 17 | expect(MercatorCoordinate.fromLngLat(dc, 500).toLngLat()).toEqual({lng: -77, lat: 39});
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| 18 | });
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| 19 |
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| 20 | test('#toAltitude', () => {
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| 21 | const dc = new LngLat(-77, 39);
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| 22 | expect(MercatorCoordinate.fromLngLat(dc, 500).toAltitude()).toBe(500);
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| 23 | });
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| 24 |
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| 25 | test('#mercatorScale', () => {
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| 26 | expect(mercatorScale(0)).toBe(1);
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| 27 | expect(mercatorScale(45)).toBe(1.414213562373095);
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| 28 | });
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| 29 |
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| 30 | test('#meterInMercatorCoordinateUnits', () => {
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| 31 | const nullIsland = new LngLat(0, 0);
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| 32 | expect(MercatorCoordinate.fromLngLat(nullIsland).meterInMercatorCoordinateUnits()).toBe(2.4981121214570498e-8);
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| 33 | });
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| 34 | });
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