public void PeekAt_Should_ReturnElementAtPosition()
{
// arrange
var stack = new StackableList <int>();
// act
stack.Add(10);
stack.Add(11);
var peekedElement = stack.PeekAt(1);
// assert
Assert.Equal(10, peekedElement);
}
public void Peek_Should_ReturnLastElement()
{
// arrange
var stack = new StackableList <int>();
// act
stack.Add(10);
stack.Add(11);
var peekedElement = stack.Peek();
// assert
Assert.Equal(11, peekedElement);
}
public void Pop_Should_ReturnRemoveElement()
{
// arrange
var stack = new StackableList <int>();
// act
stack.Add(10);
stack.Add(11);
var removedEelement = stack.Pop();
// assert
Assert.Equal(11, removedEelement);
}
public void TryPeekAt_Should_NotFailIfIndexToBig()
{
// arrange
var stack = new StackableList <int>();
// act
stack.Add(10);
stack.Add(11);
var result = stack.TryPeekAt(3, out var peekedElement);
// assert
Assert.Equal(0, peekedElement);
Assert.False(result);
}
public void Pop_Should_RemoveItemsFromTheEnd()
{
// arrange
var stack = new StackableList <int>();
// act
stack.Add(10);
stack.Add(11);
stack.Pop();
// assert
List <int> .Enumerator enumerator = stack.GetEnumerator();
enumerator.MoveNext();
Assert.Equal(10, enumerator.Current);
Assert.False(enumerator.MoveNext());
}
public void Push_Should_AddElementsAtTheEnd()
{
// arrange
var stack = new StackableList <int>();
// act
stack.Add(10);
stack.Add(11);
// assert
List <int> .Enumerator enumerator = stack.GetEnumerator();
enumerator.MoveNext();
Assert.Equal(10, enumerator.Current);
enumerator.MoveNext();
Assert.Equal(11, enumerator.Current);
Assert.False(enumerator.MoveNext());
}