public void CoinValueServiceReturnsCorrectValueForMinAndMaxEntries()
{
ICurrency currency = new USDCurrency();
ICoinValueService coinService = new CoinValueService(currency);
CurrencyItem firstCoin = currency.GetItems()[0];
CoinValueViewModel coin;
//Max weight
coin = coinService.GetCoinValue(firstCoin.MaxWeight, AverageBetweenTwoValues(firstCoin.MinSize, firstCoin.MaxSize));
Assert.True(coin.IsValidCoin);
Assert.True(coin.CoinValue == firstCoin.Value);
//Min weight
coin = coinService.GetCoinValue(firstCoin.MinWeight, AverageBetweenTwoValues(firstCoin.MinSize, firstCoin.MaxSize));
Assert.True(coin.IsValidCoin);
Assert.True(coin.CoinValue == firstCoin.Value);
//Max size
coin = coinService.GetCoinValue(AverageBetweenTwoValues(firstCoin.MaxWeight, firstCoin.MinWeight), firstCoin.MaxSize);
Assert.True(coin.IsValidCoin);
Assert.True(coin.CoinValue == firstCoin.Value);
//Min size
coin = coinService.GetCoinValue(AverageBetweenTwoValues(firstCoin.MaxWeight, firstCoin.MinWeight), firstCoin.MinSize);
Assert.True(coin.IsValidCoin);
Assert.True(coin.CoinValue == firstCoin.Value);
}
public void IncorrectInputProducesInvalidCoin()
{
//Create a service with the USD Currency (could mock with more time)
ICoinValueService service = new CoinValueService(new USDCurrency());
CoinValueViewModel coinValue = service.GetCoinValue(0, 0);
Assert.True(coinValue.IsValidCoin == false);
coinValue = service.GetCoinValue(-1, 0);
Assert.True(coinValue.IsValidCoin == false);
coinValue = service.GetCoinValue(-1, 1);
Assert.True(coinValue.IsValidCoin == false);
coinValue = service.GetCoinValue(0, -1);
Assert.True(coinValue.IsValidCoin == false);
coinValue = service.GetCoinValue(1, -1);
Assert.True(coinValue.IsValidCoin == false);
coinValue = service.GetCoinValue(1, 1);
Assert.True(coinValue.IsValidCoin == false);
coinValue = service.GetCoinValue(-1, -1);
Assert.True(coinValue.IsValidCoin == false);
}
public void CorrectInputProducesCorrectOutputUSDCurrency()
{
//Create a service with the USD Currency (could mock with more time)
ICoinValueService service = new CoinValueService(new USDCurrency());
CoinValueViewModel coinValue = service.GetCoinValue(2.5, 19.05);
Assert.True(coinValue.IsValidCoin);
Assert.True(coinValue.CoinValue == 0.01);
coinValue = service.GetCoinValue(5, 21.209);
Assert.True(coinValue.IsValidCoin);
Assert.True(coinValue.CoinValue == 0.05);
coinValue = service.GetCoinValue(2.268, 17.907);
Assert.True(coinValue.IsValidCoin);
Assert.True(coinValue.CoinValue == 0.10);
coinValue = service.GetCoinValue(5.67, 24.257);
Assert.True(coinValue.IsValidCoin);
Assert.True(coinValue.CoinValue == 0.25);
coinValue = service.GetCoinValue(11.34, 30.607);
Assert.True(coinValue.IsValidCoin);
Assert.True(coinValue.CoinValue == 0.50);
coinValue = service.GetCoinValue(22.68, 38.1);
Assert.True(coinValue.IsValidCoin);
Assert.True(coinValue.CoinValue == 1);
}