366 lines
11 KiB
Dart
366 lines
11 KiB
Dart
// test/unit/geofence_calculation_test.dart
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//
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// Unit test untuk GeofenceCalculator — Haversine formula & zone check.
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// Jalankan: flutter test test/unit/geofence_calculation_test.dart
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//
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// Pure Dart test — tidak ada dependency eksternal.
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import 'dart:math' as math;
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import 'package:flutter_test/flutter_test.dart';
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// ---------- GeofenceCalculator (mirror logika dari project) ----------
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class GeofenceCalculator {
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static const double _earthRadiusMeters = 6371000.0;
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/// Hitung jarak (meter) antara dua koordinat GPS menggunakan Haversine formula.
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double haversineDistance(
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double lat1,
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double lng1,
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double lat2,
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double lng2,
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) {
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final dLat = _toRad(lat2 - lat1);
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final dLng = _toRad(lng2 - lng1);
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final a = math.sin(dLat / 2) * math.sin(dLat / 2) +
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math.cos(_toRad(lat1)) *
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math.cos(_toRad(lat2)) *
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math.sin(dLng / 2) *
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math.sin(dLng / 2);
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final c = 2 * math.atan2(math.sqrt(a), math.sqrt(1 - a));
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return _earthRadiusMeters * c;
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}
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/// Return true jika koordinat berada di dalam radius dari center.
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bool isInsideGeofence({
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required double centerLat,
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required double centerLng,
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required double radiusMeters,
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required double currentLat,
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required double currentLng,
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}) {
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final dist =
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haversineDistance(centerLat, centerLng, currentLat, currentLng);
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return dist <= radiusMeters;
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}
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/// Return true jika user baru saja keluar dari geofence.
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bool hasExitedGeofence({
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required double centerLat,
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required double centerLng,
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required double radiusMeters,
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required double previousLat,
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required double previousLng,
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required double currentLat,
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required double currentLng,
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}) {
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final wasInside = isInsideGeofence(
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centerLat: centerLat,
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centerLng: centerLng,
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radiusMeters: radiusMeters,
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currentLat: previousLat,
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currentLng: previousLng,
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);
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final isInside = isInsideGeofence(
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centerLat: centerLat,
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centerLng: centerLng,
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radiusMeters: radiusMeters,
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currentLat: currentLat,
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currentLng: currentLng,
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);
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return wasInside && !isInside;
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}
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/// Return true jika user baru saja masuk ke geofence.
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bool hasEnteredGeofence({
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required double centerLat,
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required double centerLng,
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required double radiusMeters,
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required double previousLat,
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required double previousLng,
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required double currentLat,
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required double currentLng,
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}) {
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final wasInside = isInsideGeofence(
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centerLat: centerLat,
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centerLng: centerLng,
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radiusMeters: radiusMeters,
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currentLat: previousLat,
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currentLng: previousLng,
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);
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final isInside = isInsideGeofence(
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centerLat: centerLat,
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centerLng: centerLng,
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radiusMeters: radiusMeters,
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currentLat: currentLat,
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currentLng: currentLng,
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);
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return !wasInside && isInside;
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}
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double _toRad(double deg) => deg * math.pi / 180.0;
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}
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// ---------- Koordinat referensi ----------
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// ITS (Institut Teknologi Sepuluh Nopember) Surabaya
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const double _itsCenterLat = -7.2754;
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const double _itsCenterLng = 112.7920;
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// ---------- Tests ----------
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void main() {
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late GeofenceCalculator calc;
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setUp(() {
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calc = GeofenceCalculator();
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});
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// ── HAVERSINE DISTANCE TESTS ─────────────────────────────────────
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group('haversineDistance — akurasi jarak', () {
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test('jarak titik yang sama → 0 meter', () {
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final dist = calc.haversineDistance(
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_itsCenterLat, _itsCenterLng, _itsCenterLat, _itsCenterLng);
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expect(dist, closeTo(0.0, 0.001));
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});
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test('jarak ~111 km per derajat lintang (ekuator)', () {
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// 1 derajat lintang ≈ 111 km
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final dist =
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calc.haversineDistance(0.0, 0.0, 1.0, 0.0); // 0° → 1°N di ekuator
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expect(dist, closeTo(111_195, 500)); // ±500 meter toleransi
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});
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test('jarak ~111 km per derajat bujur (di ekuator)', () {
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final dist = calc.haversineDistance(0.0, 0.0, 0.0, 1.0);
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expect(dist, closeTo(111_195, 500));
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});
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test('jarak ITS ke Tunjungan Plaza ≈ 7.6 km', () {
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// Tunjungan Plaza Surabaya: -7.2611, 112.7380
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const tpLat = -7.2611;
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const tpLng = 112.7380;
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final dist = calc.haversineDistance(
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_itsCenterLat, _itsCenterLng, tpLat, tpLng);
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// Jarak darat sekitar 7-8 km, Haversine (garis lurus) ≈ 5-6 km
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expect(dist, greaterThan(4000));
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expect(dist, lessThan(9000));
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});
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test('jarak simetris: A→B == B→A', () {
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const lat1 = -7.2754;
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const lng1 = 112.7920;
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const lat2 = -7.2611;
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const lng2 = 112.7380;
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final d1 = calc.haversineDistance(lat1, lng1, lat2, lng2);
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final d2 = calc.haversineDistance(lat2, lng2, lat1, lng1);
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expect(d1, closeTo(d2, 0.001));
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});
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test('jarak ≥ 0 untuk semua koordinat valid', () {
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final dist =
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calc.haversineDistance(-90.0, -180.0, 90.0, 180.0);
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expect(dist, greaterThanOrEqualTo(0));
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});
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});
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// ── IS INSIDE GEOFENCE ───────────────────────────────────────────
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group('isInsideGeofence — pengecekan zona', () {
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// Radius 500 meter dari ITS
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const radius = 500.0;
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test('titik tepat di center → inside', () {
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expect(
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calc.isInsideGeofence(
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centerLat: _itsCenterLat,
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centerLng: _itsCenterLng,
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radiusMeters: radius,
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currentLat: _itsCenterLat,
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currentLng: _itsCenterLng,
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),
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isTrue,
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);
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});
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test('titik 100 meter dari center → inside radius 500m', () {
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// ±0.001° ≈ 100-111 meter
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expect(
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calc.isInsideGeofence(
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centerLat: _itsCenterLat,
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centerLng: _itsCenterLng,
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radiusMeters: radius,
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currentLat: _itsCenterLat + 0.0009,
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currentLng: _itsCenterLng,
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),
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isTrue,
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);
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});
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test('titik 600 meter dari center → outside radius 500m', () {
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// ±0.006° ≈ 600+ meter
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expect(
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calc.isInsideGeofence(
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centerLat: _itsCenterLat,
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centerLng: _itsCenterLng,
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radiusMeters: radius,
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currentLat: _itsCenterLat + 0.006,
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currentLng: _itsCenterLng,
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),
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isFalse,
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);
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});
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test('radius sangat kecil (10m) — hanya titik sangat dekat yang inside',
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() {
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// ±0.0001° ≈ 11 meter
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expect(
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calc.isInsideGeofence(
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centerLat: _itsCenterLat,
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centerLng: _itsCenterLng,
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radiusMeters: 10,
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currentLat: _itsCenterLat + 0.0001,
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currentLng: _itsCenterLng,
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),
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isFalse,
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);
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});
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test('radius sangat besar (10km) — titik jauh masih inside', () {
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expect(
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calc.isInsideGeofence(
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centerLat: _itsCenterLat,
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centerLng: _itsCenterLng,
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radiusMeters: 10000,
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currentLat: _itsCenterLat + 0.05,
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currentLng: _itsCenterLng,
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),
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isTrue,
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);
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});
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});
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// ── GEOFENCE EXIT DETECTION ───────────────────────────────────────
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group('hasExitedGeofence', () {
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const centerLat = _itsCenterLat;
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const centerLng = _itsCenterLng;
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const radius = 500.0;
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// Koordinat dalam radius
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const insideLat = _itsCenterLat + 0.001; // ≈ 111m
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const insideLng = _itsCenterLng;
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// Koordinat di luar radius
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const outsideLat = _itsCenterLat + 0.01; // ≈ 1110m
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const outsideLng = _itsCenterLng;
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test('pindah dari dalam ke luar → hasExited = true', () {
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expect(
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calc.hasExitedGeofence(
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centerLat: centerLat,
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centerLng: centerLng,
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radiusMeters: radius,
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previousLat: insideLat,
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previousLng: insideLng,
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currentLat: outsideLat,
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currentLng: outsideLng,
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),
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isTrue,
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);
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});
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test('masih di dalam → hasExited = false', () {
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expect(
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calc.hasExitedGeofence(
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centerLat: centerLat,
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centerLng: centerLng,
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radiusMeters: radius,
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previousLat: insideLat,
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previousLng: insideLng,
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currentLat: insideLat + 0.0005,
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currentLng: insideLng,
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),
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isFalse,
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);
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});
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test('sudah di luar dan makin jauh → hasExited = false', () {
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expect(
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calc.hasExitedGeofence(
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centerLat: centerLat,
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centerLng: centerLng,
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radiusMeters: radius,
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previousLat: outsideLat,
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previousLng: outsideLng,
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currentLat: outsideLat + 0.005,
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currentLng: outsideLng,
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),
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isFalse,
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);
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});
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});
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// ── GEOFENCE ENTER DETECTION ─────────────────────────────────────
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group('hasEnteredGeofence', () {
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const centerLat = _itsCenterLat;
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const centerLng = _itsCenterLng;
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const radius = 500.0;
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const insideLat = _itsCenterLat + 0.001;
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const insideLng = _itsCenterLng;
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const outsideLat = _itsCenterLat + 0.01;
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const outsideLng = _itsCenterLng;
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test('pindah dari luar ke dalam → hasEntered = true', () {
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expect(
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calc.hasEnteredGeofence(
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centerLat: centerLat,
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centerLng: centerLng,
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radiusMeters: radius,
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previousLat: outsideLat,
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previousLng: outsideLng,
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currentLat: insideLat,
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currentLng: insideLng,
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),
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isTrue,
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);
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});
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test('sudah di dalam → hasEntered = false', () {
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expect(
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calc.hasEnteredGeofence(
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centerLat: centerLat,
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centerLng: centerLng,
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radiusMeters: radius,
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previousLat: insideLat,
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previousLng: insideLng,
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currentLat: insideLat + 0.0001,
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currentLng: insideLng,
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),
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isFalse,
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);
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});
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});
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// ── REAL WORLD REFERENCE TESTS ────────────────────────────────────
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group('real-world reference distances', () {
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test('jarak ITS ke Surabaya Gubeng station ≈ 6-8 km', () {
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// Stasiun Gubeng: -7.2651, 112.7509
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final dist = calc.haversineDistance(
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_itsCenterLat, _itsCenterLng, -7.2651, 112.7509);
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expect(dist, greaterThan(4000));
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expect(dist, lessThan(10000));
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});
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test('jarak Jakarta ke Surabaya ≈ 700-800 km', () {
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// Jakarta: -6.2088, 106.8456
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// Surabaya: -7.2575, 112.7521
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final dist =
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calc.haversineDistance(-6.2088, 106.8456, -7.2575, 112.7521);
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expect(dist, greaterThan(650_000));
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expect(dist, lessThan(850_000));
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});
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});
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} |