@Test
  public void testExcludeWiki() {
    EntityReferenceSet set = new EntityReferenceSet();

    set.excludes(new EntityReference("wiki", EntityType.WIKI));

    Assert.assertFalse(set.matches(new EntityReference("wiki", EntityType.WIKI)));

    Assert.assertTrue(set.matches(new EntityReference("otherwiki", EntityType.WIKI)));

    Assert.assertTrue(set.matches(new EntityReference("notwiki", EntityType.WIKI)));

    set.excludes(new EntityReference("otherwiki", EntityType.WIKI));

    Assert.assertFalse(set.matches(new EntityReference("wiki", EntityType.WIKI)));

    Assert.assertFalse(set.matches(new EntityReference("otherwiki", EntityType.WIKI)));

    Assert.assertTrue(set.matches(new EntityReference("notwiki", EntityType.WIKI)));
  }