public void NormalTest()
{
StackUsingTwoQueues <int> stack = new StackUsingTwoQueues <int>();
stack.Push(1);
Assert.Equal(1, stack.Pop());
Assert.Throws <InvalidOperationException>(() => stack.Pop());
stack.Push(50);
stack.Push(100);
Assert.Equal(100, stack.Pop());
stack.Push(4993);
Assert.Equal(4993, stack.Pop());
stack.Push(3);
Assert.Equal(3, stack.Pop());
Assert.Equal(50, stack.Pop());
Assert.Throws <InvalidOperationException>(() => stack.Pop());
}
public void InvaliInput()
{
StackUsingTwoQueues <object> stack = new StackUsingTwoQueues <object>();
Assert.Throws <ArgumentNullException>(() => stack.Push(null));
}
