public void PlusCommand_WithOneNumberInStack_FailExecute()
{
var command = new PlusCommand();
var stack = new Stack <decimal>();
stack.Push(1);
Exception ex = Assert.Throws <CalculateException>(() => command.Calculate(stack));
Assert.Equal("Невозможно сложить 2 числа", ex.Message);
}
public void PlusCommand_WithTwoNumberInStack_SumInStack()
{
var command = new PlusCommand();
var stack = new Stack <decimal>();
stack.Push(4);
stack.Push(2);
command.Calculate(stack);
Assert.Single(stack);
Assert.Equal(6m, stack.Peek());
}
