copedId, 10);
    const i10 = s10.objectInstance;
    assert.strictEqual(i10.creationTs, 10);
    assert.strictEqual(i10.deletionTs, 15);
  });

  test('boundsOnUndeletedObject', function() {
    const collection = new tr.model.ObjectCollection({});
    const scopedId = new tr.model.ScopedId('ptr', '0x1000');
    collection.idWasCreated(
        scopedId, 'cat', 'Frame', 10);
    collection.addSnapshot(
        scopedId, 'cat', 'Frame', 15, {foo: 1});

    collection.updateBounds();
    assert.strictEqual(1