public void Commit_test()
{
// arrange
storage[0] = new Dictionary<string, object>
{
{"List", new List<int> {1,2,3 } }
};
var list = new LazyList<int>(dbCollectionMock.Object, 0, "List");
// act
list[0] = 69;
list[1] = 69;
list[2] = 69;
list.Commit();
// assert
var storageList = ((storage[0]["List"]) as IEnumerable<int>);
storageList.ElementAt(0).Should().Be(69);
storageList.ElementAt(1).Should().Be(69);
storageList.ElementAt(2).Should().Be(69);
dbCollectionMock.Verify(x => x.ArrayElem(0, "List", It.IsAny<int>()), Times.Never);
}