Ole-Morten Duesund
e8428de775
Vite + TypeScript PWA that mirrors the Android app's core features: - Pre-processed shelter data (build-time UTM33N→WGS84 conversion) - Leaflet map with shelter markers, user location, and offline tiles - Canvas compass arrow (ported from DirectionArrowView.kt) - IndexedDB shelter cache with 7-day staleness check - Service worker with CacheFirst tiles and precached app shell - i18n for en, nb, nn (ported from Android strings.xml) - iOS/Android compass handling with low-pass filter - Respects user map interaction (no auto-snap on pan/zoom) - Build revision cache-breaker for reliable SW updates Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
67 lines
1.9 KiB
TypeScript
67 lines
1.9 KiB
TypeScript
import { describe, it, expect } from 'vitest';
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import {
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distanceMeters,
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bearingDegrees,
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formatDistance,
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} from '../src/util/distance-utils';
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describe('distanceMeters', () => {
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it('returns 0 for same point', () => {
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expect(distanceMeters(59.9, 10.7, 59.9, 10.7)).toBe(0);
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});
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it('calculates Oslo to Bergen distance (~305km)', () => {
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// Oslo: 59.9139, 10.7522 — Bergen: 60.3913, 5.3221
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const d = distanceMeters(59.9139, 10.7522, 60.3913, 5.3221);
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expect(d).toBeGreaterThan(300_000);
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expect(d).toBeLessThan(310_000);
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});
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it('calculates short distance (~1.1km)', () => {
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// ~1km apart in Oslo
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const d = distanceMeters(59.91, 10.75, 59.92, 10.75);
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expect(d).toBeGreaterThan(1000);
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expect(d).toBeLessThan(1200);
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});
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});
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describe('bearingDegrees', () => {
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it('north bearing is ~0', () => {
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const b = bearingDegrees(59.9, 10.7, 60.9, 10.7);
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expect(b).toBeCloseTo(0, 0);
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});
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it('east bearing is ~90', () => {
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const b = bearingDegrees(59.9, 10.0, 59.9, 11.0);
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expect(b).toBeGreaterThan(85);
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expect(b).toBeLessThan(95);
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});
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it('south bearing is ~180', () => {
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const b = bearingDegrees(60.0, 10.7, 59.0, 10.7);
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expect(b).toBeCloseTo(180, 0);
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});
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it('west bearing is ~270', () => {
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const b = bearingDegrees(59.9, 11.0, 59.9, 10.0);
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expect(b).toBeGreaterThan(265);
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expect(b).toBeLessThan(275);
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});
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});
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describe('formatDistance', () => {
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it('formats short distance in meters', () => {
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expect(formatDistance(42)).toBe('42 m');
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expect(formatDistance(999)).toBe('999 m');
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});
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it('formats long distance in km', () => {
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expect(formatDistance(1000)).toBe('1.0 km');
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expect(formatDistance(1500)).toBe('1.5 km');
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expect(formatDistance(12345)).toBe('12.3 km');
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});
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it('rounds meters to nearest integer', () => {
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expect(formatDistance(42.7)).toBe('43 m');
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});
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});
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