Test target ID is reset when removing target object with large ID #151

Public issue: #740

Author: greenrobot-team

objectbox_test/test/box_test.dart

@@ -25,6 +25,32 @@ void main() {
 
   tearDown(() => env.closeAndDelete());
 
+  test('target ID is reset when removing target object with large ID', () {
+    final modelABox = store.box<ModelA>();
+    final modelBBox = store.box<ModelB>();
+
+    // final modelAdbId = 4294967295; // 32-bit unsigned integer MAX WORKS
+    final modelAdbId = 4294967295 + 1; // FAILS
+
+    final modelB = ModelB()..modelA.target = ModelA(dbId: modelAdbId);
+    final modelBId = modelBBox.put(modelB);
+    // Need to put target object as using manually assigned IDs
+    modelABox.put(ModelA(dbId: modelAdbId));
+
+    // Check ToOne has target
+    final modelA = modelBBox.get(modelBId)!.modelA;
+    expect(modelA.targetId, modelAdbId, reason: "target ID doesn't match");
+    expect(modelA.target, isNotNull);
+
+    // Remove target object
+    expect(modelABox.remove(modelAdbId), true);
+
+    // Check ToOne has no target
+    final modelARemoved = modelBBox.get(modelBId)!.modelA;
+    expect(modelARemoved.targetId, 0, reason: "target ID not 0");
+    expect(modelARemoved.target, isNull);
+  });
+
   test('store box vending', () {
     final box1 = store.box<TestEntity>();
     expect(box1.isEmpty(), isTrue);

objectbox_test/test/entity.dart

@@ -504,3 +504,21 @@ class RelatedNamedEntity {
 
   String? name;
 }
+
+@Entity()
+class ModelA {
+  @Id(assignable: true)
+  int dbId;
+
+  ModelA({required this.dbId});
+}
+
+@Entity()
+class ModelB {
+  @Id()
+  int dbId;
+
+  final modelA = ToOne<ModelA>();
+
+  ModelB({this.dbId = 0});
+}

objectbox_test/test/objectbox-model.json

@@ -767,10 +767,46 @@
           "targetId": "16:5931645853908059165"
         }
       ]
+    },
+    {
+      "id": "17:1916197463975409850",
+      "lastPropertyId": "1:7361238329179935424",
+      "name": "ModelA",
+      "properties": [
+        {
+          "id": "1:7361238329179935424",
+          "name": "dbId",
+          "type": 6,
+          "flags": 129
+        }
+      ],
+      "relations": []
+    },
+    {
+      "id": "18:2680158095061865736",
+      "lastPropertyId": "2:533966917738031607",
+      "name": "ModelB",
+      "properties": [
+        {
+          "id": "1:6351192468911651752",
+          "name": "dbId",
+          "type": 6,
+          "flags": 1
+        },
+        {
+          "id": "2:533966917738031607",
+          "name": "modelAId",
+          "indexId": "24:4321803250180166911",
+          "type": 11,
+          "flags": 520,
+          "relationTarget": "ModelA"
+        }
+      ],
+      "relations": []
     }
   ],
-  "lastEntityId": "16:5931645853908059165",
-  "lastIndexId": "23:6649884639373473085",
+  "lastEntityId": "18:2680158095061865736",
+  "lastIndexId": "24:4321803250180166911",
   "lastRelationId": "2:313640065593441165",
   "lastSequenceId": "0:0",
   "modelVersion": 5,