collection equality using hamcrest

Question

I want to assert equality of two collection using hamcrest.

I know there is contains matcher but I want it to ignore ordering.

{1,2} is equals to {2,1} for my need.

What is the right syntax?

Answer 1

Use containsInAnyOrder() :

  List colors = Arrays.asList("red","green","blue");
  assertThat(colors, containsInAnyOrder("green", "red", "blue")); // is true

Answer 2

Collection col1, col2;
Set set1 = new HashSet(col1);
set1.removeAll(col2);
assertTrue(set1.isEmpty());

Also you can create utils class like this and use it to find difference