public void StackUsingArray1UnlimitedSizeTestPeekEmptyStack()
{
// Create stack & push three items.
var st = new StackUsingArray2UnlimitedSizeComplete <int>();
try
{
st.Peek();
}
catch (InvalidOperationException)
{
// Exception.
Assert.IsTrue(true);
return;
}
// No exception.
Assert.Fail();
}
public void StackUsingArray1UnlimitedSizeTestOneItem()
{
// Create stack with capacity of 1.
var st = new StackUsingArray2UnlimitedSizeComplete <int>();
// Check the count.
Assert.AreEqual(0, st.Count);
// Push an item.
st.Push(1);
// Check the count.
Assert.AreEqual(1, st.Count);
// Peek at the item.
Assert.AreEqual(1, st.Peek());
// Pop the item.
Assert.AreEqual(1, st.Pop());
// Check the count.
Assert.AreEqual(0, st.Count);
}
public void StackUsingArray1UnlimitedSizeTestMultipleItems()
{
// Create stack.
var st = new StackUsingArray2UnlimitedSizeComplete <int>();
// Check the count.
Assert.AreEqual(0, st.Count);
// Push one item.
st.Push(1);
// Check the count.
Assert.AreEqual(1, st.Count);
// Peek at the top item.
Assert.AreEqual(1, st.Peek());
// Pop the item.
Assert.AreEqual(1, st.Pop());
// Check the count.
Assert.AreEqual(0, st.Count);
// Push two items.
st.Push(1);
st.Push(2);
// Check the count.
Assert.AreEqual(2, st.Count);
// Peek at the top item.
Assert.AreEqual(2, st.Peek());
// Pop the item.
Assert.AreEqual(2, st.Pop());
// Check the count.
Assert.AreEqual(1, st.Count);
// Peek at the top item.
Assert.AreEqual(1, st.Peek());
// Pop the item.
Assert.AreEqual(1, st.Pop());
// Check the count.
Assert.AreEqual(0, st.Count);
// Push three items.
st.Push(1);
st.Push(2);
st.Push(3);
// Check the count.
Assert.AreEqual(3, st.Count);
// Peek at the top item.
Assert.AreEqual(3, st.Peek());
// Pop the item.
Assert.AreEqual(3, st.Pop());
// Check the count.
Assert.AreEqual(2, st.Count);
// Peek at the top item.
Assert.AreEqual(2, st.Peek());
// Pop the item.
Assert.AreEqual(2, st.Pop());
// Check the count.
Assert.AreEqual(1, st.Count);
// Peek at the top item.
Assert.AreEqual(1, st.Peek());
// Pop the item.
Assert.AreEqual(1, st.Pop());
// Check the count.
Assert.AreEqual(0, st.Count);
// Push five items (Force a reallocation & copy).
st.Push(1);
st.Push(2);
st.Push(3);
st.Push(4);
st.Push(5);
// Check the count.
Assert.AreEqual(5, st.Count);
// Peek at the top item.
Assert.AreEqual(5, st.Peek());
// Pop the items.
Assert.AreEqual(5, st.Pop());
Assert.AreEqual(4, st.Pop());
Assert.AreEqual(3, st.Pop());
Assert.AreEqual(2, st.Pop());
Assert.AreEqual(1, st.Pop());
// Check the count.
Assert.AreEqual(0, st.Count);
}
