Backlink tests (wip)

test/backlinks_test.dart

@@ -0,0 +1,54 @@
+////////////////////////////////////////////////////////////////////////////////
+//
+// Copyright 2022 Realm Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+////////////////////////////////////////////////////////////////////////////////
+
+import 'package:realm_common/realm_common.dart';
+import 'package:test/expect.dart';
+
+import '../lib/realm.dart';
+import 'test.dart';
+
+part 'backlinks_test.g.dart';
+
+@RealmModel()
+class _Source {
+  String name = 'source';
+  _Target? target;
+}
+
+@RealmModel()
+class _Target {
+  @Backlink(#target)
+  late Iterable<_Source> backlinks; // computed property, so must go last in generated class!
+
+  String name = 'target';
+}
+
+Future<void> main([List<String>? args]) async {
+  await setupTests(args);
+
+  test('x', () {
+    final config = Configuration.local([Target.schema, Source.schema]);
+    final realm = getRealm(config);
+
+    final target = Target();
+    final source = realm.write(() => realm.add(Source(target: target)));
+
+    expect(source.target, target);
+    expect(target.backlinks, [source]);
+  });
+}