0, collection.bounds.min);
    assert.strictEqual(15, collection.bounds.max);
  });

  test('snapshotWithCustomBaseTypeThenDelete', function() {
    const collection = new tr.model.ObjectCollection({});
    const scopedId = new tr.model.ScopedId('ptr', '0x1000');
    const s10 = collection.addSnapshot(
        scopedId, 'cat', 'cc::PictureLayerImpl', 10, {}, 'cc::LayerImpl');
    collection.idWasDeleted(
        scopedId, 'cat', 'cc::LayerImpl', 15);
    collection.updateBounds();
    assert.strictEqual(10,