public void MappingIncrementalProvider(IMapping map)
{
var providers = map.GetFieldsWithProviders;
var result = map.Incremental("Id");
var provider = providers.FirstOrDefault();
Assert.Equal(map, result);
Assert.Equal("Id", provider.Key);
Assert.Equal(ProviderType.Incremental, provider.Value.Type);
Assert.Equal(typeof(int), provider.Value.TType);
Assert.Equal("Id", ((IncrementalProvider)provider.Value).Prop);
}