public async Task AddMultipleAsync_CallsRepoAddAsyncDesiredTimes()
{
var copies = 4;
var model = new ProductDTO()
{
Name = "Test"
};
this.CreateService();
await _service.AddMultipleAsync(model, copies);
_mock.Verify(repo => repo.AddAsync(It.IsAny <Product>()), Times.Exactly(copies));
}