help4bis
e4aa5277d7
Repository keeps one live Timeline per room and re-yields on its onUpdate callback (fires for both live events AND requestHistory), not just onSync which never fires for pagination. loadMoreMessages now paginates that same instance; added canLoadMore. Timeline widget requests older history when scrolled within 400px of the oldest end, guarded against re-entry, with a top loading spinner. Verified: widget test drives a drag-to-top and asserts loadMoreMessages fires; live smoke test confirms the onUpdate delivery path (reused by history) still shows new messages after the refactor. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
105 lines
3.2 KiB
Dart
105 lines
3.2 KiB
Dart
// Version: 1.0.0 | Created: 2026-07-04
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// Verifies the chat timeline requests older history when scrolled near the
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// top (oldest end) of the reverse list. Driven through the real widget tree
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// with a fake repository, since Playwright cannot scroll the CanvasKit surface.
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import 'package:flutter/material.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:flutter_test/flutter_test.dart';
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import 'package:matrix/matrix.dart';
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import 'package:m8chat_app/core/network/matrix_client.dart';
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import 'package:m8chat_app/features/chat/data/chat_repository.dart';
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import 'package:m8chat_app/features/chat/domain/message_model.dart';
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import 'package:m8chat_app/features/chat/presentation/chat_controller.dart';
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import 'package:m8chat_app/features/chat/presentation/chat_screen.dart';
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class _FakeChatRepository extends ChatRepository {
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_FakeChatRepository() : super(client: Client('test-client'));
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int loadMoreCalls = 0;
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bool _hasMore = true;
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@override
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bool canLoadMore(String roomId) => _hasMore;
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@override
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Future<void> loadMoreMessages(String roomId) async {
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loadMoreCalls++;
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_hasMore = false; // one page then exhausted
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}
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}
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void main() {
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testWidgets('scrolling to the top requests older history once', (
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tester,
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) async {
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const roomId = '!paginate:server';
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final base = DateTime(2026, 7, 4, 8);
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final messages = [
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for (var i = 40; i >= 1; i--)
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MessageModel(
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eventId: '\$e$i',
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roomId: roomId,
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senderId: '@me:server',
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senderDisplayName: 'Me',
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timestamp: base.add(Duration(seconds: i)),
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type: MessageType.text,
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body: 'Message $i',
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isMine: true,
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),
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];
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final repo = _FakeChatRepository();
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await tester.pumpWidget(
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ProviderScope(
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overrides: [
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matrixClientProvider.overrideWithValue(Client('test-client')),
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chatRepositoryProvider.overrideWithValue(repo),
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chatTimelineProvider(
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roomId,
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).overrideWith((ref) => Stream.value(messages)),
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],
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child: const MaterialApp(home: ChatScreen(roomId: roomId)),
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),
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);
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await tester.pumpAndSettle();
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expect(repo.loadMoreCalls, 0);
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// Confirm the override is actually in effect.
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final container = ProviderScope.containerOf(
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tester.element(find.byType(ChatScreen)),
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);
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expect(identical(container.read(chatRepositoryProvider), repo), isTrue);
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double offset() => tester
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.state<ScrollableState>(find.byType(Scrollable).first)
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.position
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.pixels;
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double maxExtent() => tester
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.state<ScrollableState>(find.byType(Scrollable).first)
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.position
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.maxScrollExtent;
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// Scroll up toward the oldest end (reverse list: drag content down).
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await tester.drag(find.byType(ListView), const Offset(0, 3000));
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await tester.pumpAndSettle();
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expect(
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offset(),
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greaterThan(maxExtent() - 400),
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reason:
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'drag should have reached the oldest end (offset=${offset()}, '
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'max=${maxExtent()})',
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);
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expect(
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repo.loadMoreCalls,
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greaterThan(0),
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reason: 'reaching the top should request older history',
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);
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});
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}
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