103 lines
2.9 KiB
Dart
103 lines
2.9 KiB
Dart
import 'package:drift_offline_first/drift_offline_first.dart';
|
|
import 'package:test/test.dart';
|
|
|
|
import '../utils/crdt_context.dart';
|
|
import '../utils/database.dart';
|
|
import '../utils/tables.dart';
|
|
|
|
void main() {
|
|
late OfflineSyncCrdt crdt;
|
|
late CrdtDatabase crdtDb;
|
|
late String nodeId;
|
|
|
|
group('Given CRDT for an empty database and a pending changeset', () {
|
|
late Iterable<CrdtDataEntry> changeset;
|
|
|
|
setUp(() async {
|
|
(crdt, crdtDb, nodeId) = database.crdtContext;
|
|
|
|
final todo = TodoEntry(
|
|
id: const RowId(1),
|
|
content: 'test',
|
|
targetDate: DateTime.now(),
|
|
);
|
|
|
|
changeset = todo.toCrdtDataEntry(crdtDb, Hlc.now(nodeId));
|
|
});
|
|
|
|
test(
|
|
'when merging a changeset '
|
|
'then the changeset is saved to the database.', () async {
|
|
await crdt.merge(changeset);
|
|
|
|
expect(await crdtDb.managers.crdtDataTable.get(), changeset);
|
|
});
|
|
});
|
|
|
|
group(
|
|
'Given CRDT for a database with data and a pending changeset with conflicting data and older HLC',
|
|
() {
|
|
late Iterable<CrdtDataEntry> firstChangeset;
|
|
late Iterable<CrdtDataEntry> lateOldChangeset;
|
|
|
|
setUp(() async {
|
|
(crdt, crdtDb, nodeId) = database.crdtContext;
|
|
|
|
final todo = TodoEntry(
|
|
id: const RowId(1),
|
|
content: 'test',
|
|
targetDate: DateTime.now(),
|
|
);
|
|
|
|
firstChangeset = todo.toCrdtDataEntry(crdtDb, Hlc.now(nodeId));
|
|
await crdt.merge(firstChangeset);
|
|
|
|
lateOldChangeset = todo.toCrdtDataEntry(crdtDb, Hlc.zero(nodeId));
|
|
});
|
|
|
|
test(
|
|
'when merging a changeset with older HLC '
|
|
'then no changes are saved to the database.', () async {
|
|
await crdt.merge(lateOldChangeset);
|
|
|
|
expect(await crdtDb.managers.crdtDataTable.get(), firstChangeset);
|
|
});
|
|
});
|
|
|
|
group(
|
|
'Given CRDT for a database with data and a pending changeset with conflicting data and some entries with newer HLC',
|
|
() {
|
|
late Iterable<CrdtDataEntry> firstChangeset;
|
|
late Iterable<CrdtDataEntry> newerChangeset;
|
|
|
|
setUp(() async {
|
|
(crdt, crdtDb, nodeId) = database.crdtContext;
|
|
|
|
final todo = TodoEntry(
|
|
id: const RowId(1),
|
|
content: 'test',
|
|
targetDate: DateTime.now(),
|
|
);
|
|
|
|
firstChangeset = todo.toCrdtDataEntry(crdtDb, Hlc.now(nodeId));
|
|
await crdt.merge(firstChangeset);
|
|
|
|
newerChangeset = todo
|
|
.toCrdtDataEntry(crdtDb, Hlc.now(nodeId))
|
|
.where((e) => e.columnName == 'content');
|
|
});
|
|
|
|
test(
|
|
'when merging a changeset with some entries with newer HLC '
|
|
'then the entries with newer HLC are saved to the database.', () async {
|
|
await crdt.merge(newerChangeset);
|
|
|
|
final expectedResultingChangeset = [
|
|
for (final e in firstChangeset)
|
|
if (e.columnName == 'content') newerChangeset.first else e,
|
|
];
|
|
|
|
expect(await crdtDb.managers.crdtDataTable.get(), expectedResultingChangeset);
|
|
});
|
|
});
|
|
}
|