timetable performance optimization

2026-09-25 22:27:10 +02:00
parent ef7d17033d
commit ed8e52f475
13 changed files with 391 additions and 137 deletions
@@ -0,0 +1,74 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:marianum_mobile/api/marianumconnect/queries/timetable_get_week/timetable_get_week_response.dart';
+import 'package:marianum_mobile/extensions/date_time.dart';
+import 'package:marianum_mobile/state/app/modules/timetable/bloc/week_cache.dart';
+
+TimetableGetWeekResponse _week(DateTime monday, {String room = 'A101'}) =>
+    TimetableGetWeekResponse(
+      from: monday,
+      until: monday.addDays(4),
+      entries: [
+        McTimetableEntry(
+          id: 1,
+          date: monday,
+          startTime: DateTime(1970, 1, 1, 8),
+          endTime: DateTime(1970, 1, 1, 9),
+          subjects: const ['ma'],
+          teachers: const [],
+          rooms: [room],
+          classNames: const [],
+          lessonType: 'LESSON',
+          status: 'REGULAR',
+          substitutionText: null,
+          lessonText: null,
+          infoText: null,
+        ),
+      ],
+    );
+
+void main() {
+  final monday = DateTime(2026, 9, 21);
+
+  test('returns null when the stored week has identical content', () {
+    final cache = {monday.weekKey(): _week(monday)};
+    final result = mergeWeekIntoCache(
+      cache,
+      monday,
+      _week(monday),
+      viewedWeekStart: monday,
+      now: monday,
+    );
+    expect(result, isNull);
+  });
+
+  test('stores changed content', () {
+    final cache = {monday.weekKey(): _week(monday)};
+    final changed = _week(monday, room: 'B202');
+    final result = mergeWeekIntoCache(
+      cache,
+      monday,
+      changed,
+      viewedWeekStart: monday,
+      now: monday,
+    );
+    expect(result![monday.weekKey()], same(changed));
+  });
+
+  test('drops weeks far from both the viewed week and today', () {
+    final far = monday.addDays(7 * (kWeekCacheRadius + 3));
+    final nearToday = monday.addDays(-7 * kWeekCacheRadius);
+    final viewed = monday.addDays(7 * (kWeekCacheRadius * 3));
+    final cache = {
+      far.weekKey(): _week(far),
+      nearToday.weekKey(): _week(nearToday),
+    };
+    final result = mergeWeekIntoCache(
+      cache,
+      viewed,
+      _week(viewed),
+      viewedWeekStart: viewed,
+      now: monday.addDays(2),
+    );
+    expect(result!.keys, {nearToday.weekKey(), viewed.weekKey()});
+  });
+}