svoid test_replaceSublist() {
  // insert shorter list
  
  L l = ll("a", "x", "z");
  replaceSublist(l, 1, 2, ll("b", "c"));
  assertEqualsVerbose(l, ll("a", "b", "c", "z"));
  
  // insert longer list
  
  l = ll("a", "x", "y", "z");
  replaceSublist(l, 1, 3, ll("b"));
  assertEqualsVerbose(l, ll("a", "b", "z"));
  
  // insert same-size list
  l = ll("a", "x", "y", "z");
  replaceSublist(l, 2, 3, ll("x"));
  assertEqualsVerbose(l, ll("a", "x", "x", "z"));
}