public void LimitedStack_HasCorrectCount_InNonOverflowScenario()
{
var stack = new LimitedStack <int>(5);
stack.Add(1);
stack.Add(2);
stack.Add(3);
Assert.AreEqual(3, stack.Count());
}
public void LimitedStack_AddingValuesAfterPopping_WithOverflow_StillGivesCorrectOrder()
{
var stack = new LimitedStack <int>(4);
stack.Add(1);
stack.Add(2);
stack.Pop();
stack.Add(3);
stack.Add(4);
stack.Pop();
stack.Add(5);
stack.Add(6);
stack.Pop();
stack.Add(7);
stack.Add(8);
stack.Pop();
stack.Add(9);
var arr = stack.ToArray();
Assert.AreEqual(9, arr[0]);
Assert.AreEqual(7, arr[1]);
Assert.AreEqual(5, arr[2]);
Assert.AreEqual(3, arr[3]);
Assert.AreEqual(4, arr.Length);
}
public void LimitedStack_HasCorrectValues_InOrder_NoOverflow()
{
var stack = new LimitedStack <int>(3);
stack.Add(1);
stack.Add(2);
var arr = stack.ToArray();
Assert.AreEqual(2, arr[0]);
Assert.AreEqual(1, arr[1]);
}
public void LimitedStack_PopGivesBackCorrectValues_NoOverflow()
{
var stack = new LimitedStack <int>(4);
stack.Add(1);
stack.Add(2);
stack.Add(3);
Assert.AreEqual(3, stack.Pop());
Assert.AreEqual(2, stack.Pop());
Assert.AreEqual(1, stack.Count());
Assert.AreEqual(1, stack.Pop());
Assert.AreEqual(0, stack.Count());
}
public void LimitedStack_HasCorrectValues_InOrder_AfterOverflow()
{
var stack = new LimitedStack <int>(3);
stack.Add(1);
stack.Add(2);
stack.Add(3);
stack.Add(4);
stack.Add(5);
var arr = stack.ToArray();
Assert.AreEqual(5, arr[0]);
Assert.AreEqual(4, arr[1]);
Assert.AreEqual(3, arr[2]);
}
public void LimitedStack_PopingEmptyStack_Throws()
{
var stack = new LimitedStack <int>(4);
stack.Add(1);
stack.Pop();
bool gotException = false;
try
{
stack.Pop();
}
catch (Exception)
{
gotException = true;
}
Assert.IsTrue(gotException, "No exception if poping empty stack");
}
public void LimitedStack_PopGivesBackCorrectValues_AfterOverflow()
{
var stack = new LimitedStack <int>(4);
stack.Add(1);
stack.Add(2);
stack.Add(3);
stack.Add(4);
stack.Add(5);
stack.Add(6);
stack.Add(7);
Assert.AreEqual(7, stack.Pop());
Assert.AreEqual(6, stack.Pop());
Assert.AreEqual(2, stack.Count());
Assert.AreEqual(5, stack.Pop());
Assert.AreEqual(4, stack.Pop());
Assert.AreEqual(0, stack.Count());
}