Source Code added

mobile/test/modules/home/asset_grid_data_structure_test.dart

@@ -0,0 +1,113 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:immich_mobile/widgets/asset_grid/asset_grid_data_structure.dart';
+import 'package:immich_mobile/entities/asset.entity.dart';
+
+void main() {
+  final List<Asset> testAssets = [];
+
+  for (int i = 0; i < 150; i++) {
+    int month = i ~/ 31;
+    int day = (i % 31).toInt();
+
+    DateTime date = DateTime(2022, month, day);
+
+    testAssets.add(
+      Asset(
+        checksum: "",
+        localId: '$i',
+        ownerId: 1,
+        fileCreatedAt: date,
+        fileModifiedAt: date,
+        updatedAt: date,
+        durationInSeconds: 0,
+        type: AssetType.image,
+        fileName: '',
+        isFavorite: false,
+        isArchived: false,
+        isTrashed: false,
+      ),
+    );
+  }
+
+  final List<Asset> assets = [];
+
+  assets.addAll(
+    testAssets.sublist(0, 5).map((e) {
+      e.fileCreatedAt = DateTime(2022, 1, 5);
+      return e;
+    }).toList(),
+  );
+  assets.addAll(
+    testAssets.sublist(5, 10).map((e) {
+      e.fileCreatedAt = DateTime(2022, 1, 10);
+      return e;
+    }).toList(),
+  );
+  assets.addAll(
+    testAssets.sublist(10, 15).map((e) {
+      e.fileCreatedAt = DateTime(2022, 2, 17);
+      return e;
+    }).toList(),
+  );
+  assets.addAll(
+    testAssets.sublist(15, 30).map((e) {
+      e.fileCreatedAt = DateTime(2022, 10, 15);
+      return e;
+    }).toList(),
+  );
+
+  group('Test grouped', () {
+    test('test grouped check months', () async {
+      final renderList = await RenderList.fromAssets(assets, GroupAssetsBy.day);
+
+      // Oct
+      // Day 1
+      // 15 Assets => 5 Rows
+      // Feb
+      // Day 1
+      // 5 Assets => 2 Rows
+      // Jan
+      // Day 2
+      // 5 Assets => 2 Rows
+      // Day 1
+      // 5 Assets => 2 Rows
+      expect(renderList.elements, hasLength(4));
+      expect(renderList.elements[0].type, RenderAssetGridElementType.monthTitle);
+      expect(renderList.elements[0].date.month, 1);
+      expect(renderList.elements[1].type, RenderAssetGridElementType.groupDividerTitle);
+      expect(renderList.elements[1].date.month, 1);
+      expect(renderList.elements[2].type, RenderAssetGridElementType.monthTitle);
+      expect(renderList.elements[2].date.month, 2);
+      expect(renderList.elements[3].type, RenderAssetGridElementType.monthTitle);
+      expect(renderList.elements[3].date.month, 10);
+    });
+
+    test('test grouped check types', () async {
+      final renderList = await RenderList.fromAssets(assets, GroupAssetsBy.day);
+
+      // Oct
+      // Day 1
+      // 15 Assets => 3 Rows
+      // Feb
+      // Day 1
+      // 5 Assets => 1 Row
+      // Jan
+      // Day 2
+      // 5 Assets => 1 Row
+      // Day 1
+      // 5 Assets => 1 Row
+      final types = [
+        RenderAssetGridElementType.monthTitle,
+        RenderAssetGridElementType.groupDividerTitle,
+        RenderAssetGridElementType.monthTitle,
+        RenderAssetGridElementType.monthTitle,
+      ];
+
+      expect(renderList.elements, hasLength(types.length));
+
+      for (int i = 0; i < renderList.elements.length; i++) {
+        expect(renderList.elements[i].type, types[i]);
+      }
+    });
+  });
+}