@Test
void urlWithCollection()
{

    HashMap<String, ArrayList<String>> map = new HashMap<>();
    ArrayList<String> collection1 = new ArrayList<>();
    collection1.add("test");
    map.put("alice", collection1);
    ArrayList<String> collection2 = new ArrayList<>();
    collection2.add(null);
    collection2.add("t&t");
    collection2.add("R&D");
    map.put("bob", collection2);
    assertEquals("bob=&bob=t%26t&bob=R%26D&alice=test", this.tool.url(map));
}