private static void check(List<Pair<QuadAction, Quad>> record, int indx, QuadAction quadAction, Quad quad) { assertTrue("Index "+indx+" out of range [0,"+record.size()+")", 0 <= indx && indx < record.size() ) ; Pair<QuadAction, Quad> pair = record.get(indx) ; assertEquals(quadAction, pair.getLeft()) ; assertEquals(quad, pair.getRight()) ; } }