public void WhenPushingMultipleBracesDepthIsIncreased()
        {
            var stack = new UnifiedBraceStacker();

            stack.Push(new CharPos('{', 0));
            stack.Push(new CharPos('(', 0));
            Assert.Equal(1, stack.Pop('{').Depth);
            Assert.Equal(0, stack.Pop('{').Depth);
        }
        public void WhenPopGetsSameBracePushed()
        {
            var stack = new UnifiedBraceStacker();

            stack.Push(new CharPos('{', 0));
            var item = stack.Pop('{');

            Assert.Equal('{', item.Brace);
        }