static void Main(string[] args)
{
IVerifyProgram program = null;
// Implement 2 stacks in an array
program = new Implement2StacksInArray();
program.VerifyProgram();
}
public void VerifyProgram()
{
// 1. Test push and pop on an empty stack
// 2. Test push to full stack
// 3. Test pop to empty stack
// 4. Test push again from an emptied stack
// 5. Test boundary conditions like testing with just 2 elements. Less than 2 elements etc.
// 1.
Implement2StacksInArray stack = new Implement2StacksInArray();
int s1_val = 0; int s2_val = 0;
stack.Create(6);
stack.Push(1, 10);
stack.Pop(ref s1_val, ref s2_val);
Debug.Assert(s1_val == 1); Debug.Assert(s2_val == 10);
// 2.
stack.Push(1, 10); stack.Push(2, 11); stack.Push(3, 12);
try { stack.Push(4, 13); }
catch (Exception ex) { Debug.Assert(ex.Message.Contains("full")); }
// 3.
stack.Pop(ref s1_val, ref s2_val); Debug.Assert(s1_val == 3); Debug.Assert(s2_val == 12);
stack.Pop(ref s1_val, ref s2_val); Debug.Assert(s1_val == 2); Debug.Assert(s2_val == 11);
stack.Pop(ref s1_val, ref s2_val); Debug.Assert(s1_val == 1); Debug.Assert(s2_val == 10);
try { stack.Pop(ref s1_val, ref s2_val); }
catch (Exception ex) { Debug.Assert(ex.Message.Contains("empty")); }
// 4.
stack.Push(1, 10); stack.Pop(ref s1_val, ref s2_val);
Debug.Assert(s1_val == 1); Debug.Assert(s2_val == 10);
// 5.
stack.Create(2);
stack.Push(1, 10);
try { stack.Push(2, 11); }
catch (Exception ex) { Debug.Assert(ex.Message.Contains("full")); }
Debug.Assert(stack.Create(1) == false);
}