public async Task <IActionResult> Calculate([FromBody] CalculateDto calcDto)
{
var message = _changeService.Calc(calcDto.AmountPaid, calcDto.TotalAmountToPay);
if (!_changeService.IsValid)
{
return(BadRequest(_changeService.GetErrors));
}
var historyEntry = new ChangeHistory(_changeService.TotalChanged());
foreach (var(value, quantity) in _changeService.Notes)
{
var historyEntryItem = new ChangeHistoryItem(ECurrencyType.Note, quantity, value);
historyEntry.AddItem(historyEntryItem);
}
foreach (var(value, quantity) in _changeService.Coins)
{
var historyEntryItem = new ChangeHistoryItem(ECurrencyType.Coin, quantity, value);
historyEntry.AddItem(historyEntryItem);
}
await _context.ChangeHistories.AddAsync(historyEntry);
await _context.SaveChangesAsync();
return(Ok(message));
}
public void GivenKnownMonetaryUnitsOfBillAndPaymentShouldReturnExpectCountOfNotesAndCoins()
{
var expectNotes = new Dictionary <int, int>();
expectNotes.Add(20, 1);
expectNotes.Add(10, 1);
var expectCoins = new Dictionary <int, int>();
expectCoins.Add(50, 2);
var change = new Change();
var stringResult = change.Calc(81, 50);
Assert.IsTrue(expectNotes.Keys.All(x => change.Notes.ContainsKey(x)));
Assert.IsTrue(expectNotes.All(x => change.Notes[x.Key] == x.Value));
Assert.IsTrue(expectCoins.Keys.All(x => change.Coins.ContainsKey(x)));
Assert.IsTrue(expectCoins.All(x => change.Coins[x.Key] == x.Value));
}