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Wrote unit tests for testing parsing location from EXIF

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ashilkn 2023-04-29 16:11:43 +05:30
parent e028d16173
commit 6231b46302
1 changed files with 121 additions and 0 deletions
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test/utils/parsing_loc_from_exif_test.dart Normal file
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import "package:photos/services/location_service.dart";
import "package:test/test.dart";
void main() {
group('toLocationObj', () {
test('returns null if lat or long are null', () {
final gpsData = GPSData(null, null, null, null);
expect(gpsData.toLocationObj(), isNull);
final gpsDataWithLatOnly = GPSData(null, [1, 2, 3], null, null);
expect(gpsDataWithLatOnly.toLocationObj(), isNull);
final gpsDataWithLongOnly = GPSData(null, null, null, [1, 2, 3]);
expect(gpsDataWithLongOnly.toLocationObj(), isNull);
});
test('returns null if lat or long have less than 3 elements', () {
final gpsData1 = GPSData(null, [1, 2], null, [1, 2, 3]);
expect(gpsData1.toLocationObj(), isNull);
final gpsData2 = GPSData(null, [1, 2, 3], null, [1, 2]);
expect(gpsData2.toLocationObj(), isNull);
final gpsData3 = GPSData(null, [1, 2], null, [1, 2]);
expect(gpsData3.toLocationObj(), isNull);
});
test('returns null if latRef or longRef is of invalid format', () {
final gpsData1 = GPSData("A", [1, 2, 3], "xyz", [1, 2, 3]);
expect(gpsData1.toLocationObj(), isNull);
});
void testParsingLocation(
String? latRef,
List<double> lat,
String? longRef,
List<double> long,
double expectedLat,
double expectedLong,
) {
final gpsData = GPSData(latRef, lat, longRef, long);
final location = gpsData.toLocationObj();
expect(location, isNotNull);
expect(location!.latitude, closeTo(expectedLat, 0.00001));
expect(location.longitude, closeTo(expectedLong, 0.00001));
}
test('converts coordinates with different latRef and longRef combinations',
() {
testParsingLocation(
"N",
[40, 26, 46.84],
"E",
[79, 58, 56.33],
40.446344,
79.982313,
);
testParsingLocation(
"N",
[40, 26, 46.84],
"W",
[79, 58, 56.33],
40.446344,
-79.982313,
);
testParsingLocation(
"S",
[40, 26, 46.84],
"E",
[79, 58, 56.33],
-40.446344,
79.982313,
);
testParsingLocation(
"S",
[40, 26, 46.84],
"W",
[79, 58, 56.33],
-40.446344,
-79.982313,
);
});
test(
'converts coordinates with missing latRef and longRef but with signed lat and long',
() {
testParsingLocation(
null,
[40, 26, 46.84],
null,
[79, 58, 56.33],
40.446344,
79.982313,
);
testParsingLocation(
null,
[-40, 26, 46.84],
null,
[79, 58, 56.33],
-40.446344,
79.982313,
);
testParsingLocation(
null,
[40, 26, 46.84],
null,
[-79, 58, 56.33],
40.446344,
-79.982313,
);
testParsingLocation(
null,
[40, -26, 46.84],
null,
[79, -58, 56.33],
-40.446344,
-79.982313,
);
});
});
}