http://stackoverflow.com/questions/25700059/mockito-verify-method-was-called-with-list-ignore-order-of-elements-in-list

MyMatchersTest.java

import static java.util.Arrays.asList;
import static org.hamcrest.MatcherAssert.assertThat;

import org.junit.Test;

import com.google.common.collect.ImmutableList;

public class MyMatchersTest {
  @Test
  public void testSameAsSet() throws Exception {
    assertThat(asList("a", "b", "c"), sameAsSet(asList("a", "b", "c")));
    assertThat(asList("c", "b", "a"), sameAsSet(asList("a", "b", "c")));
    assertThat(asList("b", "c", "a"), sameAsSet(asList("a", "b", "c")));

    assertThat(ImmutableList.of("b", "c", "a"), sameAsSet(asList("a", "b", "c")));
    assertThat(asList("b", "c", "a"), sameAsSet(ImmutableList.of("a", "b", "c")));
  }

  @Test(expected = AssertionError.class)
  public void testSameAsSetFailMoreExpected() throws Exception {
    assertThat(asList("a", "b", "c"), sameAsSet(asList("a", "b", "c", "d")));
  }

  @Test(expected = AssertionError.class)
  public void testSameAsSetFailLessExpected() throws Exception {
    assertThat(asList("a", "b", "c"), sameAsSet(asList("a", "b")));
  }
}