public async Task Add_RowIsAdded_DbContainsEntry()
{
var user = new User {
Address = "address", FullName = "name", PhoneNumber = 47
};
bool success = await repo.Add(user);
Assert.True(success);
Assert.NotNull(repo[user.Id]);
var _user = await repo.Get(user.Id);
Assert.NotNull(_user);
Assert.Equal(_user.Id, user.Id);
Assert.Equal(_user.Address, user.Address);
Assert.Equal(_user.FullName, user.FullName);
Assert.Equal(_user.PhoneNumber, user.PhoneNumber);
await repo.Remove(user.Id);
}