using OpenTap;

namespace AddInPlugin
{
    public static class TestStepHelper
    {
        public static ITestStep GetPreviousStep(this ITestStep step)
        {
            var parentList = step.ParentList;
            if (parentList == null || parentList.Count <= 0)
            {
                return null;
            }
            int index = parentList.IndexOf(step);
            if (index == 0)
            {
                return null;
            }
            return parentList[index - 1];
        }

        public static ITestStep GetNextStep(this ITestStep step)
        {
            var parentList = step.ParentList;
            if (parentList == null || parentList.Count <= 0)
            {
                return null;
            }
            int index = parentList.IndexOf(step);
            if (index == parentList.Count - 1)
            {
                return null;
            }
            return parentList[index + 1];
        }
    }
}