test(document): repro #8295

test/document.test.js

@@ -868,19 +868,19 @@ describe('document', function() {
       userSchema.virtual('hello').get(function() {
         return 'Hello, ' + this.name;
       });
-      const User = db.model('User', userSchema);
+      const User = db.model('gh1376_User', userSchema);
 
       const groupSchema = new Schema({
         name: String,
-        _users: [{type: Schema.ObjectId, ref: 'User'}]
+        _users: [{type: Schema.ObjectId, ref: 'gh1376_User'}]
       });
 
-      const Group = db.model('Group', groupSchema);
+      const Group = db.model('gh1376_Group', groupSchema);
 
       User.create({name: 'Alice'}, {name: 'Bob'}, function(err, alice, bob) {
         assert.ifError(err);
 
-        new Group({name: 'mongoose', _users: [alice, bob]}).save(function(err, group) {
+        Group.create({name: 'mongoose', _users: [alice, bob]}, function(err, group) {
           Group.findById(group).populate('_users').exec(function(err, group) {
             assert.ifError(err);
             assert.ok(group.toJSON()._users[0].hello);
@@ -8158,4 +8158,28 @@ describe('document', function() {
       assert.equal(fromDb.activity.description, 'after');
     });
   });
+
+  it('handles getter setting virtual on manually populated doc when calling toJSON (gh-8295)', function() {
+    const childSchema = Schema({}, { toJSON: { getters: true } });
+    childSchema.virtual('field').
+      get(function() { return this._field; }).
+      set(function(v) { return this._field = v; });
+    const Child = db.model('gh8295_Child', childSchema);
+
+    const parentSchema = Schema({
+      child: { type: mongoose.ObjectId, ref: 'gh8295_Child', get }
+    }, { toJSON: { getters: true } });
+    const Parent = db.model('gh8295_Parent', parentSchema);
+
+    function get(child) {
+      child.field = true;
+      return child;
+    }
+
+    let p = new Parent({ child: new Child({}) });
+    assert.strictEqual(p.toJSON().child.field, true);
+
+    p = new Parent({ child: new Child({}) });
+    assert.strictEqual(p.child.toJSON().field, true);
+  });
 });