class tabOf(val tabId: Int, val index:Int) : TypeSafeMatcher<View>() {
        override fun describeTo(description: Description?) {
        }

        override fun matchesSafely(view: View): Boolean {
            if (!checkAncestors(view.parent)) {
                return false
            }
            val parent = view.parent as ViewGroup
            return parent.childCount > index &&
                    parent.getChildAt(index) == view
        }


        private fun checkAncestors(viewParent: ViewParent): Boolean {
            if (viewParent !is View) {
                return false
            }
            return if (viewParent.id == tabId) {
                true
            } else checkAncestors(viewParent.getParent())
        }
    }