private void PushCommandsToActiveObject(IReadOnlyList <int> numbers, IReadOnlyList <Type> types,
CalculatorActiveObject activeObject)
{
for (var i = 0; i < numbers.Count; i++)
{
var type = types[i];
var command = (ICommand)Activator.CreateInstance(type, numbers[i]);
activeObject.Push(command);
}
}
public void MixingAddAndSubtractCommandsResultingInDesignatedExpectedValue(int[] numbers, Type[] types, int expected)
{
// Arrange
var calculatorActiveObject = new CalculatorActiveObject();
PushCommandsToActiveObject(numbers, types, calculatorActiveObject);
// Act
var result = calculatorActiveObject.Calculate();
// Assert
That(result, Is.EqualTo(expected));
}
public void MixingAddAndSubtractCommandsAndUndoingOperationAfterFirstCommandResultingInDesignatedExpectedValue(
int[] numbers, Type[] types, int expected)
{
// Arrange
var calculatorActiveObject = new CalculatorActiveObject();
PushCommandsToActiveObject(numbers.Take(1).ToArray(), types.Take(1).ToArray(), calculatorActiveObject);
PopCommandFromActiveObject(calculatorActiveObject);
PushCommandsToActiveObject(numbers.Skip(1).ToArray(), types.Skip(1).ToArray(), calculatorActiveObject);
// Act
var result = calculatorActiveObject.Calculate();
// Assert
That(result, Is.EqualTo(expected));
}
private void PopCommandFromActiveObject(CalculatorActiveObject calculatorActiveObject)
{
calculatorActiveObject.Pop();
}