public void SimpleAddTest()
{
IStack stack = new ArrayStack();
StackCalculator calculator = new StackCalculator(stack);
calculator.Push(1);
calculator.Push(2);
calculator.Add();
Assert.AreEqual(3, calculator.Result());
}
public void StrongTest()
{
IStack stack = new Stack();
StackCalculator calculator = new StackCalculator(stack);
calculator.Push(7);
calculator.Push(8);
calculator.Add();
calculator.Push(13);
calculator.Deduct();
calculator.Push(2);
calculator.Division();
Assert.AreEqual(1, calculator.Result());
}