public void Count_OnEmptyStack_ReturnsZero()
{
//Near-arbitrary stack size for the creation of the stack:
int stackTestSize = 5;
Stack target = new Stack(stackTestSize);
int expected = 0;
int actual = target.Count();
Assert.AreEqual(expected, actual);
}
public void Count_OnFilledThenEmptiedStack_ReturnsOne()
{
//Assemble
int stackTestSize = 3;
Stack target = new Stack(stackTestSize);
//Act
target.Push("A");
target.Push("B");
//Pop all but one item from the stack.
target.Pop();
//Verify that count has returned value of 1.
int expected = 1;
int actual = target.Count();
//Assert
Assert.AreEqual(expected, actual);
}
public void Count_OnFilledMinusOneStack_ReturnsFour()
{
//Assemble
int stackTestSize = 5;
Stack target = new Stack(stackTestSize);
//Act
target.Push("A");
target.Push("B");
target.Push("C");
target.Push("D");
target.Push("E");
//Pop the last item from the stack.
target.Pop();
//Verify that count has returned value of 4.
int expected = 4;
int actual = target.Count();
//Assert
Assert.AreEqual(expected, actual);
}
public void Count_OnStackWithItems_ReturnsTwo()
{
//Near-arbitrary stack size for the creation of the stack:
int stackTestSize = 5;
Stack target = new Stack(stackTestSize);
//Push stub data
target.Push("a");
target.Push("a");
int expected = 2;
int actual = target.Count();
Assert.AreEqual(expected, actual);
}