feat: import Chinese-localized Buzz source snapshot

Signed-off-by: cls_宁波本机 <908705107@qq.com>

mobile/test/shared/theme/community_theme_sync_test.dart

@@ -0,0 +1,546 @@
+import 'dart:async';
+import 'dart:convert';
+
+import 'package:buzz/shared/relay/relay.dart';
+import 'package:buzz/shared/theme/theme.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  const local = CommunityThemePreference(
+    theme: 'buzz',
+    accent: '#3b82f6',
+    followSystem: true,
+  );
+
+  test('confirmed absence seeds exact NIP-78 coordinate', () async {
+    final session = _FakeSession();
+    final relay = _FakeSignedRelay();
+    final manager = _manager(session, relay);
+
+    final result = await manager.initialize();
+    expect(result.status, CommunityThemeRemoteStatus.absent);
+    manager.publish(local);
+    await manager.flush();
+
+    expect(relay.submissions, hasLength(1));
+    expect(relay.submissions.single.kind, 30078);
+    expect(
+      relay.submissions.single.tags,
+      containsAll(<List<String>>[
+        ['d', 'community-theme'],
+        ['t', 'community-theme'],
+      ]),
+    );
+    expect(jsonDecode(relay.submissions.single.content), local.toJson());
+  });
+
+  test(
+    'live replacement closes the history-to-subscription absence gap',
+    () async {
+      const replacement = CommunityThemePreference(
+        theme: 'dracula',
+        accent: '#ef4444',
+        followSystem: false,
+      );
+      final applied = <CommunityThemePreference>[];
+      late final _FakeSession session;
+      session = _FakeSession(
+        onFetchHistory: () {
+          session.emit(
+            _event(
+              id: 'replacement',
+              createdAt: 100,
+              content: jsonEncode(replacement.toJson()),
+            ),
+          );
+        },
+      );
+      final manager = _manager(
+        session,
+        _FakeSignedRelay(),
+        onRemote: (remote) => applied.add(remote.preference),
+      );
+
+      final result = await manager.initialize();
+
+      expect(session.subscribeCalls, 1);
+      expect(result.status, CommunityThemeRemoteStatus.valid);
+      expect(result.remote?.preference, replacement);
+      expect(applied, [replacement]);
+    },
+  );
+
+  test('invalid and unavailable records never seed', () async {
+    for (final session in [
+      _FakeSession(history: [_event(content: '{bad json')]),
+      _FakeSession(error: StateError('offline')),
+    ]) {
+      final relay = _FakeSignedRelay();
+      final result = await _manager(session, relay).initialize();
+      expect(
+        result.status,
+        anyOf(
+          CommunityThemeRemoteStatus.invalid,
+          CommunityThemeRemoteStatus.unavailable,
+        ),
+      );
+      expect(relay.submissions, isEmpty);
+    }
+  });
+
+  test(
+    'newest valid event wins with deterministic same-second ordering',
+    () async {
+      final applied = <CommunityThemePreference>[];
+      final session = _FakeSession(
+        history: [
+          _event(
+            id: 'z',
+            createdAt: 50,
+            content: jsonEncode(
+              const CommunityThemePreference(
+                theme: 'dracula',
+                accent: '#ef4444',
+                followSystem: false,
+              ).toJson(),
+            ),
+          ),
+          _event(id: 'a', createdAt: 50, content: jsonEncode(local.toJson())),
+        ],
+      );
+      final manager = _manager(
+        session,
+        _FakeSignedRelay(),
+        onRemote: (r) => applied.add(r.preference),
+      );
+
+      await manager.initialize();
+      expect(applied.single.theme, 'buzz');
+
+      session.emit(
+        _event(
+          id: 'z',
+          createdAt: 50,
+          content: jsonEncode(
+            const CommunityThemePreference(
+              theme: 'dracula',
+              accent: '#ef4444',
+              followSystem: false,
+            ).toJson(),
+          ),
+        ),
+      );
+      expect(applied, hasLength(1));
+    },
+  );
+
+  test('remote hydration never cancels a newer pending local write', () async {
+    final relay = _FakeSignedRelay();
+    final session = _FakeSession();
+    final manager = _manager(session, relay);
+    await manager.initialize();
+    manager.cancelPending();
+    manager.publish(
+      const CommunityThemePreference(
+        theme: 'dracula',
+        accent: '#ef4444',
+        followSystem: false,
+      ),
+    );
+
+    session.emit(
+      _event(id: 'remote', createdAt: 100, content: jsonEncode(local.toJson())),
+    );
+    await manager.flush();
+    expect(relay.submissions, hasLength(1));
+    expect(jsonDecode(relay.submissions.single.content)['theme'], 'dracula');
+
+    manager.publish(local);
+    manager.dispose();
+    await manager.flush();
+    expect(relay.submissions, hasLength(1));
+  });
+
+  test(
+    'relay CLOSED resubscribes then catches up latest replacement event',
+    () async {
+      final applied = <CommunityThemePreference>[];
+      final session = _FakeSession();
+      final manager = _manager(
+        session,
+        _FakeSignedRelay(),
+        onRemote: (remote) => applied.add(remote.preference),
+      );
+      await manager.initialize();
+      manager.cancelPending();
+      expect(session.subscribeCalls, 1);
+
+      const replacement = CommunityThemePreference(
+        theme: 'dracula',
+        accent: '#ef4444',
+        followSystem: false,
+      );
+      session.history = [
+        _event(
+          id: 'replacement',
+          createdAt: 100,
+          content: jsonEncode(replacement.toJson()),
+        ),
+      ];
+      session.closeLiveSubscription('rate-limited: quota exceeded');
+
+      await _waitUntil(() => session.subscribeCalls == 2 && applied.isNotEmpty);
+      expect(applied.single, replacement);
+      expect(session.activeListeners, 1);
+      manager.dispose();
+    },
+  );
+
+  test('relay CLOSED after dispose never resubscribes', () async {
+    final session = _FakeSession();
+    final manager = _manager(session, _FakeSignedRelay());
+    await manager.initialize();
+    final close = session.latestClosedCallback;
+
+    manager.dispose();
+    close?.call('late close');
+    await Future<void>.delayed(const Duration(milliseconds: 20));
+
+    expect(session.subscribeCalls, 1);
+  });
+
+  test('publish failure retries and acknowledges exact preference', () async {
+    final relay = _FakeSignedRelay(failuresRemaining: 1);
+    final acknowledgements = <CommunityThemePreference>[];
+    final manager = _manager(
+      _FakeSession(),
+      relay,
+      onPublished: acknowledgements.add,
+    );
+    manager.publish(local);
+    await manager.flush();
+    expect(manager.pending, local);
+
+    await _waitUntil(() => acknowledgements.length == 1);
+    expect(relay.attempts, 2);
+    expect(manager.pending, isNull);
+    expect(acknowledgements, [local]);
+  });
+
+  test('serializes in-flight publish before latest edit', () async {
+    final firstSubmission = Completer<void>();
+    final relay = _FakeSignedRelay(firstSubmissionGate: firstSubmission.future);
+    final manager = _manager(_FakeSession(), relay);
+    const latest = CommunityThemePreference(
+      theme: 'dracula',
+      accent: '#ef4444',
+      followSystem: false,
+    );
+
+    manager.publish(local);
+    final firstFlush = manager.flush();
+    await _waitUntil(() => relay.attempts == 1);
+    manager.publish(latest);
+    await manager.flush();
+    expect(relay.attempts, 1);
+
+    firstSubmission.complete();
+    await firstFlush;
+    await _waitUntil(() => relay.attempts == 2);
+
+    expect(relay.submittedEvents, hasLength(2));
+    expect(
+      relay.submittedEvents[1].createdAt,
+      greaterThan(relay.submittedEvents[0].createdAt),
+    );
+    expect(jsonDecode(relay.submissions[1].content)['theme'], 'dracula');
+    expect(manager.pending, isNull);
+  });
+
+  test(
+    'republishes above remote observed while publish is in flight',
+    () async {
+      final firstSubmission = Completer<void>();
+      final relay = _FakeSignedRelay(
+        firstSubmissionGate: firstSubmission.future,
+      );
+      final session = _FakeSession();
+      final acknowledgements = <CommunityThemePreference>[];
+      final manager = _manager(
+        session,
+        relay,
+        onPublished: acknowledgements.add,
+      );
+      await manager.initialize();
+      manager.publish(local);
+      final firstFlush = manager.flush();
+      await _waitUntil(() => relay.attempts == 1);
+
+      session.emit(
+        _event(
+          id: 'remote-winner',
+          createdAt: 2000000000,
+          content: jsonEncode(
+            const CommunityThemePreference(
+              theme: 'dracula',
+              accent: '#ef4444',
+              followSystem: false,
+            ).toJson(),
+          ),
+        ),
+      );
+      firstSubmission.complete();
+      await firstFlush;
+
+      expect(acknowledgements, isEmpty);
+      expect(manager.pending, local);
+      await _waitUntil(() => relay.attempts == 2);
+      expect(relay.submittedEvents[1].createdAt, 2000000001);
+      expect(acknowledgements, [local]);
+      expect(manager.pending, isNull);
+    },
+  );
+
+  test('remote coordinate advances pending local publish timestamp', () async {
+    final relay = _FakeSignedRelay();
+    final session = _FakeSession();
+    final manager = _manager(session, relay);
+    await manager.initialize();
+    manager.publish(local);
+
+    session.emit(
+      _event(
+        id: 'remote',
+        createdAt: 2000000000,
+        content: jsonEncode(local.toJson()),
+      ),
+    );
+    await manager.flush();
+
+    expect(relay.submittedEvents.single.createdAt, 2000000001);
+  });
+
+  test(
+    'remote replacement invalidates A to B to A no-op suppression',
+    () async {
+      final relay = _FakeSignedRelay();
+      final session = _FakeSession();
+      final manager = _manager(session, relay);
+      await manager.initialize();
+      manager.publish(local);
+      await manager.flush();
+
+      const remotePreference = CommunityThemePreference(
+        theme: 'dracula',
+        accent: '#ef4444',
+        followSystem: false,
+      );
+      session.emit(
+        _event(
+          id: 'remote',
+          createdAt: relay.submittedEvents.single.createdAt + 1,
+          content: jsonEncode(remotePreference.toJson()),
+        ),
+      );
+      manager.publish(local);
+      await manager.flush();
+
+      expect(relay.submissions, hasLength(2));
+      expect(manager.pending, isNull);
+    },
+  );
+
+  test(
+    'published coordinate rejects delayed same-second initialization result',
+    () async {
+      const stale = CommunityThemePreference(
+        theme: 'dracula',
+        accent: '#ef4444',
+        followSystem: false,
+      );
+      final history = Completer<List<NostrEvent>>();
+      final session = _FakeSession(historyFuture: history.future);
+      final relay = _FakeSignedRelay(eventId: 'published-a');
+      final applied = <CommunityThemePreference>[];
+      final manager = _manager(
+        session,
+        relay,
+        onRemote: (remote) => applied.add(remote.preference),
+      );
+
+      final initializing = manager.initialize();
+      manager.publish(local);
+      await manager.flush();
+      final createdAt = relay.submittedEvents.single.createdAt;
+      history.complete([
+        _event(
+          id: 'published-z',
+          createdAt: createdAt,
+          content: jsonEncode(stale.toJson()),
+        ),
+      ]);
+      await initializing;
+
+      expect(applied, isEmpty);
+      expect(manager.pending, isNull);
+    },
+  );
+}
+
+CommunityThemeSyncManager _manager(
+  _FakeSession session,
+  _FakeSignedRelay relay, {
+  void Function(RemoteCommunityTheme)? onRemote,
+  void Function(CommunityThemePreference)? onPublished,
+}) => CommunityThemeSyncManager(
+  pubkey: 'pk',
+  relaySession: session,
+  signedEventRelay: relay,
+  crypto: const CommunityThemeCrypto(encrypt: _identity, decrypt: _identity),
+  debounce: const Duration(days: 1),
+  publishRetryBase: const Duration(milliseconds: 1),
+  publishRetryMax: const Duration(milliseconds: 4),
+  subscriptionRetryBase: const Duration(milliseconds: 1),
+  onRemote: onRemote ?? (_) {},
+  onPublished: onPublished ?? (_) {},
+);
+
+String _identity(String value) => value;
+
+NostrEvent _event({
+  String id = 'event',
+  int createdAt = 1,
+  required String content,
+}) => NostrEvent(
+  id: id,
+  pubkey: 'pk',
+  createdAt: createdAt,
+  kind: 30078,
+  tags: const [
+    ['d', 'community-theme'],
+  ],
+  content: content,
+  sig: 'sig',
+);
+
+class _FakeSession extends RelaySessionNotifier {
+  _FakeSession({
+    List<NostrEvent> history = const [],
+    this.historyFuture,
+    this.error,
+    this.onFetchHistory,
+  }) : history = List.of(history);
+  List<NostrEvent> history;
+  final Future<List<NostrEvent>>? historyFuture;
+  final Object? error;
+  final void Function()? onFetchHistory;
+  int subscribeCalls = 0;
+  final List<void Function(NostrEvent)> _listeners = [];
+  final List<void Function(String)> _closedCallbacks = [];
+
+  int get activeListeners => _listeners.length;
+  void Function(String)? get latestClosedCallback =>
+      _closedCallbacks.isEmpty ? null : _closedCallbacks.last;
+
+  @override
+  Future<List<NostrEvent>> fetchHistory(
+    NostrFilter filter, {
+    Duration timeout = const Duration(seconds: 8),
+  }) async {
+    if (error != null) throw error!;
+    onFetchHistory?.call();
+    if (historyFuture != null) return historyFuture!;
+    return history;
+  }
+
+  @override
+  Future<void Function()> subscribe(
+    NostrFilter filter,
+    void Function(NostrEvent) onEvent, {
+    void Function(String)? onClosed,
+  }) async {
+    subscribeCalls++;
+    _listeners.add(onEvent);
+    _closedCallbacks.add(onClosed ?? (_) {});
+    return () {
+      final index = _listeners.indexOf(onEvent);
+      if (index < 0) return;
+      _listeners.removeAt(index);
+      _closedCallbacks.removeAt(index);
+    };
+  }
+
+  void emit(NostrEvent event) {
+    for (final listener in List.of(_listeners)) {
+      listener(event);
+    }
+  }
+
+  void closeLiveSubscription(String message) {
+    if (_listeners.isEmpty) return;
+    _listeners.removeAt(0);
+    _closedCallbacks.removeAt(0)(message);
+  }
+}
+
+Future<void> _waitUntil(
+  bool Function() condition, {
+  Duration timeout = const Duration(seconds: 2),
+}) async {
+  final deadline = DateTime.now().add(timeout);
+  while (!condition()) {
+    if (DateTime.now().isAfter(deadline)) {
+      fail('condition not met within $timeout');
+    }
+    await Future<void>.delayed(const Duration(milliseconds: 1));
+  }
+}
+
+class _Submission {
+  final int kind;
+  final String content;
+  final List<List<String>> tags;
+  const _Submission(this.kind, this.content, this.tags);
+}
+
+class _FakeSignedRelay implements SignedEventRelay {
+  _FakeSignedRelay({
+    this.failuresRemaining = 0,
+    this.eventId = 'event',
+    this.firstSubmissionGate,
+  });
+  int failuresRemaining;
+  final String eventId;
+  final Future<void>? firstSubmissionGate;
+  int attempts = 0;
+  final submissions = <_Submission>[];
+  final submittedEvents = <NostrEvent>[];
+  @override
+  String? get pubkey => 'pk';
+  @override
+  Future<NostrEvent> submit({
+    required int kind,
+    required String content,
+    required List<List<String>> tags,
+    int? createdAt,
+    void Function(NostrEvent)? onSigned,
+  }) async {
+    attempts++;
+    if (attempts == 1 && firstSubmissionGate != null) {
+      await firstSubmissionGate;
+    }
+    if (failuresRemaining > 0) {
+      failuresRemaining--;
+      throw StateError('publish failed');
+    }
+    submissions.add(_Submission(kind, content, tags));
+    final event = _event(
+      id: eventId,
+      content: content,
+      createdAt: createdAt ?? 0,
+    );
+    onSigned?.call(event);
+    submittedEvents.add(event);
+    return event;
+  }
+}