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test

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randogoth 2025-02-27 14:38:03 +02:00
parent a5851e71fb
commit 2a093e3126
4 changed files with 149 additions and 20 deletions
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38
lib/rugreefer.dart
View file

@ -8,21 +8,19 @@ import 'package:turf/turf.dart';
class GeoMetadataLookup {
final String apiUrl;
final Directory cacheDir;
final double distanceThreshold;
final Distance distance = const Distance();
GeoMetadataLookup({
required this.apiUrl,
required this.cacheDir,
this.distanceThreshold = 10.0, // Default 10 meters
}) {
if (!cacheDir.existsSync()) {
cacheDir.createSync(recursive: true);
}
}
Future<List<Map<String, dynamic>>> lookup(double latitude, double longitude) async {
final String geohash = GeoHasher().encode(latitude, longitude, precision: 4);
Future<List<Map<String, dynamic>>> lookup(double latitude, double longitude, {double distance = 10.0}) async {
final String geohash = GeoHasher().encode(longitude, latitude);
final File cacheFile = File('${cacheDir.path}/$geohash.geojson.gz');
if (!cacheFile.existsSync()) {
@ -31,11 +29,11 @@ class GeoMetadataLookup {
final String geoJsonStr = utf8.decode(GZipCodec().decode(cacheFile.readAsBytesSync()));
final Map<String, dynamic> geoJson = jsonDecode(geoJsonStr);
return _findMetadata(latitude, longitude, geoJson);
return _findMetadata(latitude, longitude, distance, geoJson);
}
Future<void> _downloadGeoJson(String geohash, File cacheFile) async {
final response = await http.get(Uri.parse('$apiUrl/$geohash.geojson.gz'));
final response = await http.get(Uri.parse('$apiUrl$geohash'));
if (response.statusCode == 200) {
cacheFile.writeAsBytesSync(GZipCodec().encode(response.bodyBytes));
} else {
@ -43,8 +41,8 @@ class GeoMetadataLookup {
}
}
List<Map<String, dynamic>> _findMetadata(double latitude, double longitude, Map<String, dynamic> geoJson) {
final Point point = Point(coordinates: Position(longitude, latitude));
List<Map<String, dynamic>> _findMetadata(double latitude, double longitude, double distanceThreshold, Map<String, dynamic> geoJson) {
final Position point = Position(longitude, latitude);
List<Map<String, dynamic>> results = [];
for (var feature in geoJson['features']) {
@ -59,19 +57,30 @@ class GeoMetadataLookup {
.toList())
.toList(),
);
if (booleanPointInPolygon(point, polygon)) {
results.add({'type': 'polygon', ...properties});
}
}
else if (geometry['type'] == 'LineString') {
final line = LineString(coordinates: (geometry['coordinates'] as List).map((p) => Position(p[0], p[1])).toList());
if (_isPointNearLine(point, line)) {
final line = LineString(
coordinates: (geometry['coordinates'] as List)
.map((p) => Position(p[0] as double, p[1] as double))
.toList(),
);
if (_isPointNearLine(point, line, distanceThreshold)) {
results.add({'type': 'line', ...properties});
}
}
else if (geometry['type'] == 'MultiLineString') {
for (var lineCoords in geometry['coordinates']) {
final line = LineString(coordinates: lineCoords.map((p) => Position(p[0], p[1])).toList());
if (_isPointNearLine(point, line)) {
final line = LineString(
coordinates: (lineCoords as List)
.map((p) => Position(p[0] as double, p[1] as double))
.toList(),
);
if (_isPointNearLine(point, line, distanceThreshold)) {
results.add({'type': 'multi_line', ...properties});
break;
}
@ -81,12 +90,11 @@ class GeoMetadataLookup {
return results;
}
bool _isPointNearLine(Point point, LineString line) {
bool _isPointNearLine(Position point, LineString line, double distanceThreshold) {
for (var i = 0; i < line.coordinates.length - 1; i++) {
final p1 = line.coordinates[i];
final p2 = line.coordinates[i + 1];
final double dist = distance.distance(
LatLng(point.coordinates.lat.toDouble(), point.coordinates.lng.toDouble()),
LatLng(point.lat.toDouble(), point.lng.toDouble()),
LatLng(p1.lat.toDouble(), p1.lng.toDouble()),
);
if (dist <= distanceThreshold) return true;

10
pubspec.lock
View file

@ -241,6 +241,14 @@ packages:
url: "https://pub.dev"
source: hosted
version: "2.0.0"
mocktail:
dependency: "direct main"
description:
name: mocktail
sha256: "890df3f9688106f25755f26b1c60589a92b3ab91a22b8b224947ad041bf172d8"
url: "https://pub.dev"
source: hosted
version: "1.0.4"
node_preamble:
dependency: transitive
description:
@ -386,7 +394,7 @@ packages:
source: hosted
version: "1.2.2"
test:
dependency: "direct dev"
dependency: "direct main"
description:
name: test
sha256: "301b213cd241ca982e9ba50266bd3f5bd1ea33f1455554c5abb85d1be0e2d87e"

3
pubspec.yaml
View file

@ -11,9 +11,10 @@ dependencies:
dart_geohash: ^2.1.0
http: ^1.3.0
latlong2: ^0.9.1
mocktail: ^1.0.4
test: ^1.25.15
turf: ^0.0.10
# path: ^1.8.0
dev_dependencies:
lints: ^5.0.0
test: ^1.24.0

118
test/rugreefer_test.dart
View file

@ -1,5 +1,117 @@
import 'package:rugreefer/rugreefer.dart'; // Ensure this import is correct
import 'dart:convert';
import 'dart:io';
import 'package:test/test.dart';
import 'package:mocktail/mocktail.dart';
import 'package:http/http.dart' as http;
import 'package:rugreefer/rugreefer.dart'; // Replace with actual package name
class MockClient extends Mock implements http.Client {}
void main() {
print('Hello world!'); // Remove the missing method call
}
late GeoMetadataLookup lookup;
late Directory cacheDir;
late MockClient mockHttpClient;
setUp(() {
cacheDir = Directory.systemTemp.createTempSync();
mockHttpClient = MockClient();
lookup = GeoMetadataLookup(
apiUrl: 'http://localhost:8000/get_geodata/?format=geojson&geohash=',
cacheDir: cacheDir,
);
});
tearDown(() {
cacheDir.deleteSync(recursive: true);
});
test('Fetches and correctly parses GeoJSON with a residential landuse feature', () async {
final String geohash = 'sv2m';
final File cacheFile = File('${cacheDir.path}/$geohash.geojson.gz');
final Map<String, dynamic> mockGeoJson = {
"type": "FeatureCollection",
"features": [
{
"id": "0",
"type": "Feature",
"properties": {
"feature_id": "way/579610585",
"tags": {"waterway": "stream"}
},
"geometry": {
"type": "LineString",
"coordinates": [
[34.453125, 30.5735040],
[34.4515371, 30.5729953],
[34.4507646, 30.5725335]
]
}
}
]
};
final mockResponse = utf8.encode(jsonEncode(mockGeoJson));
cacheFile.writeAsBytesSync(GZipCodec().encode(mockResponse));
final results = await lookup.lookup(32.827714492634676, 34.96983862139979);
String prettyJson = const JsonEncoder.withIndent(' ').convert(results);
print(prettyJson);
expect(results, isNotEmpty);
expect(results.any((r) => r['type'] == 'polygon' && r['tags']['landuse'] == 'residential'), isTrue);
});
test('Ensures caching of GeoJSON data', () async {
final String geohash = 'sv2m';
final File cacheFile = File('${cacheDir.path}/$geohash.geojson.gz');
final mockGeoJson = jsonEncode({
"type": "FeatureCollection",
"features": []
});
final mockResponse = utf8.encode(mockGeoJson);
cacheFile.writeAsBytesSync(GZipCodec().encode(mockResponse));
expect(cacheFile.existsSync(), isTrue);
await lookup.lookup(30.5730, 34.4520);
expect(cacheFile.existsSync(), isTrue);
});
test('Handles API call correctly when file is not cached', () async {
final String geohash = 'sv2m';
when(() => mockHttpClient.get(Uri.parse('http://localhost:8000/get_geodata/?format=geojson&geohash=$geohash')))
.thenAnswer((_) async => http.Response(jsonEncode({
"type": "FeatureCollection",
"features": [
{
"id": "0",
"type": "Feature",
"properties": {
"feature_id": "way/579610585",
"tags": {"waterway": "stream"}
},
"geometry": {
"type": "LineString",
"coordinates": [
[34.453125, 30.5735040],
[34.4515371, 30.5729953]
]
}
}
]
}), 200));
final results = await lookup.lookup(31.776673242005337, 35.23441728409178);
String prettyJson = const JsonEncoder.withIndent(' ').convert(results);
print(prettyJson);
expect(results, isNotEmpty);
expect(results.any((r) => r['type'] == 'polygon' && r['tags']['historic'] == 'heritage'), isTrue);
});
}