public static void TestSimpleNumber(IChangeSolver solver)
{
ICurrencyHolder holder = new CurrencyHolder();
solver.FindReturnFor(holder, 200);
var result = holder.GetUsedNotations();
Assert.AreEqual(holder.SumTaken(), 200);
// There should be one entry in results, and it should be 2 of that notation.
Assert.AreEqual(result.Count, 1);
Assert.AreEqual(result["100 Dollars"], 2);
}
public static void TestSimpleRounder(IChangeSolver solver)
{
ICurrencyHolder holder = new CurrencyHolder(new List <ICurrencyNotation>()
{
new CurrencyNotation("10 Cent", 0.1M),
new CurrencyNotation("25 Cent", 0.25M),
new CurrencyNotation("75 Cent", 0.75M),
new CurrencyNotation("5 Dollar", 5),
});
solver.FindReturnFor(holder, 24.41M);
Assert.AreEqual(24.45M, holder.SumTaken());
}
public static void TestComplicatedNumber(IChangeSolver solver)
{
ICurrencyHolder holder = new CurrencyHolder();
solver.FindReturnFor(holder, 367);
var result = holder.GetUsedNotations();
Assert.AreEqual(367, holder.SumTaken());
// There should be one entry in results, and it should be 2 of that notation.
Assert.AreEqual(result.Count, 4);
Assert.AreEqual(result["100 Dollars"], 3);
Assert.AreEqual(result["10 Dollars"], 6);
Assert.AreEqual(result["5 Dollars"], 1);
Assert.AreEqual(result["2 Dollars"], 1);
}
private void Button_Click(object sender, RoutedEventArgs e)
{
// Get a CurrencyHolder holding notations made from dataGrid data in notationsList
var holder = new CurrencyHolder(notationsList.Select(f => f.GetNotation()).ToList());
var value = inputTextBox.Text;
IChangeRounder rounder = null;
if (NoroundRadioButton.IsChecked.GetValueOrDefault(false))
{
rounder = new NoRounding();
}
if (NaiveroundingRadioButton.IsChecked.GetValueOrDefault(false))
{
rounder = new NaiveRounder();
}
IChangeSolver solver = null;
if (recursiveRadioButton.IsChecked.GetValueOrDefault(false))
{
solver = new RecursiveSolver(rounder);
}
if (iterativeRadioButton.IsChecked.GetValueOrDefault(false))
{
solver = new IterativeSolver(rounder);
}
if (solver != null && decimal.TryParse(value, out decimal amount))
{
solver.FindReturnFor(holder, amount);
// Update dataGrid with result
notationsList.ForEach(f => f.Update());
dataGrid.Items.Refresh();
changeLabel.Content = $"Amount left: {amount - holder.SumTaken()}";
}
else
{
changeLabel.Content = "Input is not a valid number";
inputTextBox.Text = "111.55";
}
}
public static void TestCustomNotationsWithLeftover(IChangeSolver solver)
{
ICurrencyHolder holder = new CurrencyHolder(new List <ICurrencyNotation>()
{
new CurrencyNotation("10 Cent", 0.1M),
new CurrencyNotation("25 Cent", 0.25M),
new CurrencyNotation("75 Cent", 0.75M),
new CurrencyNotation("5 Dollar", 5),
});
solver.FindReturnFor(holder, 24.38M);
var result = holder.GetUsedNotations();
Assert.AreEqual(holder.SumTaken(), 24.35M);
// There should be one entry in results, and it should be 2 of that notation.
Assert.AreEqual(result.Count, 4);
Assert.AreEqual(result["10 Cent"], 1);
Assert.AreEqual(result["25 Cent"], 2);
Assert.AreEqual(result["75 Cent"], 5);
Assert.AreEqual(result["5 Dollar"], 4);
}
