public void TestSortStack()
{
// Arrange
// null stack
Stack <int> nullStack = null;
// empty stack
Stack <int> emptyStack = new Stack <int>();
// single item stack
Stack <int> singleItemStack = new Stack <int>();
singleItemStack.Push(1);
// common case
Stack <int> commonCaseStack = new Stack <int>();
commonCaseStack.Push(4);
commonCaseStack.Push(2);
commonCaseStack.Push(12);
commonCaseStack.Push(8);
commonCaseStack.Push(89);
commonCaseStack.Push(1000);
commonCaseStack.Push(3);
commonCaseStack.Push(67);
// Act
Stack <int> nullStackResult = StacksAndQueues.SortStack(nullStack);
Stack <int> emptyStackResult = StacksAndQueues.SortStack(emptyStack);
Stack <int> singleItemResult = StacksAndQueues.SortStack(singleItemStack);
Stack <int> commonCaseResult = StacksAndQueues.SortStack(commonCaseStack);
// Assert
Assert.IsNull(nullStackResult);
Assert.AreEqual(0, emptyStackResult.Count);
Assert.AreEqual(2, commonCaseResult.Pop());
Assert.AreEqual(3, commonCaseResult.Pop());
Assert.AreEqual(4, commonCaseResult.Pop());
Assert.AreEqual(8, commonCaseResult.Pop());
Assert.AreEqual(12, commonCaseResult.Pop());
Assert.AreEqual(67, commonCaseResult.Pop());
Assert.AreEqual(89, commonCaseResult.Pop());
Assert.AreEqual(1000, commonCaseResult.Pop());
}
public void SortStackTest(string input)
{
var stack = parse(input);
StacksAndQueues.SortStack(stack);
int currentElement = int.MinValue;
while (stack.Count > 0)
{
var element = stack.Pop();
if (currentElement > element)
{
Assert.Fail();
}
currentElement = element;
}
}