Source Code added

mobile/test/modules/utils/thumbnail_utils_test.dart

@@ -0,0 +1,63 @@
+import 'package:easy_localization/easy_localization.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:immich_mobile/domain/models/exif.model.dart';
+import 'package:immich_mobile/entities/asset.entity.dart';
+import 'package:immich_mobile/utils/thumbnail_utils.dart';
+
+void main() {
+  final dateTime = DateTime(2025, 04, 25, 12, 13, 14);
+  final dateTimeString = DateFormat.yMMMMd().format(dateTime);
+
+  test('returns description if it has one', () {
+    final result = getAltText(const ExifInfo(description: 'description'), dateTime, AssetType.image, []);
+    expect(result, 'description');
+  });
+
+  test('returns image alt text with date if no location', () {
+    final (template, args) = getAltTextTemplate(const ExifInfo(), dateTime, AssetType.image, []);
+    expect(template, "image_alt_text_date");
+    expect(args["isVideo"], "false");
+    expect(args["date"], dateTimeString);
+  });
+
+  test('returns image alt text with date and place', () {
+    final (template, args) = getAltTextTemplate(
+      const ExifInfo(city: 'city', country: 'country'),
+      dateTime,
+      AssetType.video,
+      [],
+    );
+    expect(template, "image_alt_text_date_place");
+    expect(args["isVideo"], "true");
+    expect(args["date"], dateTimeString);
+    expect(args["city"], "city");
+    expect(args["country"], "country");
+  });
+
+  test('returns image alt text with date and some people', () {
+    final (template, args) = getAltTextTemplate(const ExifInfo(), dateTime, AssetType.image, ["Alice", "Bob"]);
+    expect(template, "image_alt_text_date_2_people");
+    expect(args["isVideo"], "false");
+    expect(args["date"], dateTimeString);
+    expect(args["person1"], "Alice");
+    expect(args["person2"], "Bob");
+  });
+
+  test('returns image alt text with date and location and many people', () {
+    final (template, args) = getAltTextTemplate(
+      const ExifInfo(city: "city", country: 'country'),
+      dateTime,
+      AssetType.video,
+      ["Alice", "Bob", "Carol", "David", "Eve"],
+    );
+    expect(template, "image_alt_text_date_place_4_or_more_people");
+    expect(args["isVideo"], "true");
+    expect(args["date"], dateTimeString);
+    expect(args["city"], "city");
+    expect(args["country"], "country");
+    expect(args["person1"], "Alice");
+    expect(args["person2"], "Bob");
+    expect(args["person3"], "Carol");
+    expect(args["additionalCount"], "2");
+  });
+}