fix: preserve queued settings and recover interrupted or corrupt state

2026-10-13 09:32:50 +08:00
parent 5ceab20b67
commit da5b8076a0
16 changed files with 373 additions and 50 deletions
@@ -15,6 +15,37 @@ void main() {
  tearDown(() async {
    await directory.delete(recursive: true);
  });
+  for (final badBackup in [false, true]) {
+    test(
+      'fresh recovery archives corrupt primary and ${badBackup ? 'corrupt' : 'missing'} backup before saving',
+      () async {
+        await File('${directory.path}/hepan_snapshot.json')
+            .writeAsString('damaged primary');
+        if (badBackup) {
+          await File('${directory.path}/hepan_snapshot.bak')
+              .writeAsString('damaged backup');
+        }
+        final store = FileSnapshotStore(directory);
+        await expectLater(store.load(), throwsFormatException);
+        await store.startFresh();
+        final archives = await directory
+            .list()
+            .where((e) => e.path.contains('.damaged-'))
+            .toList();
+        expect(archives, hasLength(badBackup ? 2 : 1));
+        final contents = await Future.wait(
+          archives.map((e) => File(e.path).readAsString()),
+        );
+        expect(contents, contains('damaged primary'));
+        if (badBackup) {
+          expect(contents, contains('damaged backup'));
+        }
+        expect((await store.load())!.courses, isEmpty);
+        await store.save(AppSnapshot(courses: [course()]));
+        expect((await store.load())!.courses.single.id, 'math');
+      },
+    );
+  }
  test(
    'reopening restores courses, settings and calendar identifiers',
    () async {