public async Task UpdateUserSellerPreferences_Updates_User_Settings()
{
// Arrange
await _dbContext.Database.EnsureDeletedAsync();
var listOfSellers = new List <tblSellers>();
listOfSellers.Add(new tblSellersBuilder().WithId(1).WithName("Amazon").WithUrl("https://www.amazon.co.uk").Build());
listOfSellers.Add(new tblSellersBuilder().WithId(2).WithName("Ebay").WithUrl("https://www.ebay.co.uk").Build());
listOfSellers.Add(new tblSellersBuilder().WithId(3).WithName("Currys PC World").WithUrl("https://www.currys.co.uk").Build());
listOfSellers.Add(new tblSellersBuilder().WithId(4).WithName("Argos").WithUrl("https://www.argos.co.uk").Build());
listOfSellers.Add(new tblSellersBuilder().WithId(5).WithName("Smyths").WithUrl("https://www.smythstoys.com").Build());
listOfSellers.Add(new tblSellersBuilder().WithId(6).WithName("Target").WithUrl("https://www.target.com").Build());
_dbContext.tblSellers.AddRange(listOfSellers);
var listOfExclSellers = new List <tblExcludedSellers>();
listOfExclSellers.Add(new tblExcludedSellersBuilder().WithUsername(_username).WithSellerId(5).Build());
listOfExclSellers.Add(new tblExcludedSellersBuilder().WithUsername(_username).WithSellerId(6).Build());
_dbContext.tblExcludedSellers.AddRange(listOfExclSellers);
await _dbContext.SaveChangesAsync();
var newListOfSellers = new List <int>()
{
1, 2, 3, 5
};
// Act
var task = _userSettingsService.UpdateUserSellerPreferences(_username, newListOfSellers);
await task;
// Assert
var updatedList = _dbContext.tblExcludedSellers.Where(x => x.Username == _username).Select(x => x.SellerId).ToList();
Assert.Equal(2, updatedList.Count);
Assert.Contains(4, updatedList);
Assert.Contains(6, updatedList);
}