public void Push_on_empty_stack()
{
var sut = new RPNCalculator();
Tuple <IEnumerable <int>, int> result = null;
sut.Result += _ => result = _;
sut.Push(1);
Assert.AreEqual(new[] { 1 }, result.Item1);
Assert.AreEqual(1, result.Item2);
}
public void Push_number_on_non_empty_stack()
{
var initialStack = new Stack <int>();
initialStack.Push(1);
var sut = new RPNCalculator(initialStack);
Tuple <IEnumerable <int>, int> result = null;
sut.Result += _ => result = _;
sut.Push(2);
Assert.AreEqual(new[] { 1, 2 }, result.Item1);
Assert.AreEqual(2, result.Item2);
}
public void Push_on_empty_stack()
{
var sut = new RPNCalculator();
Tuple<IEnumerable<int>, int> result = null;
sut.Result += _ => result = _;
sut.Push(1);
Assert.AreEqual(new[]{1}, result.Item1);
Assert.AreEqual(1, result.Item2);
}
public void Push_number_on_non_empty_stack()
{
var initialStack = new Stack<int>();
initialStack.Push(1);
var sut = new RPNCalculator(initialStack);
Tuple<IEnumerable<int>, int> result = null;
sut.Result += _ => result = _;
sut.Push(2);
Assert.AreEqual(new[] { 1, 2 }, result.Item1);
Assert.AreEqual(2, result.Item2);
}
