 collection.bounds.min);
    assert.strictEqual(15, collection.bounds.max);
    assert.strictEqual(s10.objectInstance.name, 'cc::PictureLayerImpl');
    assert.strictEqual(s10.objectInstance.baseTypeName, 'cc::LayerImpl');
  });

  test('newWithSnapshotThatChangesBaseType', function() {
    const collection = new tr.model.ObjectCollection({});
    const scopedId = new tr.model.ScopedId('ptr', '0x1000');
    const i10 = collection.idWasCreated(
        scopedId, 'cat', 'cc::LayerImpl', 10);
    const s15 = c