public async Task TestGetProgramsHierarchyAsync()
{
var response = await controller.GetProgramsHierarchyAsync(new PagingQueryBindingModel <OrganizationProgramDTO>());
Assert.IsInstanceOfType(response, typeof(OkNegotiatedContentResult <PagedQueryResults <OrganizationProgramDTO> >));
service.Verify(x => x.GetProgramsHierarchyAsync(It.IsAny <QueryableOperator <OrganizationProgramDTO> >()), Times.Once());
}