assertThat(WildcardType.class.isInstance(GenericsUtil.getElementTypeOfList(t3)), is(true));
    }

    /**
     * @throws Exception
     */
    public void testSet() throws Exception {
        final Method m1 = SetType.class.getMethod("setOfString");
        final Type t1 = m1.getGenericReturnType();
        assertThat(GenericsUtil.isTypeOf(t1, Set.class), is(true));

    assertNotInstantiable(new TypeToken<ArrayList<EmptyEnum>>() {});
  }

  public void testLinkedList() {
    assertFreshInstance(new TypeToken<LinkedList<String>>() {});
  }

  public void testSet() {
    assertFreshInstance(new TypeToken<Set<String>>() {});
    assertNotInstantiable(new TypeToken<Set<EmptyEnum>>() {});
  }

  public void testHashSet() {

        assertThat(map.indexOf(null), is(0));
        assertThat(map.indexOf("test3"), is(-1));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testGet() throws Exception {
        assertThat(map.get("1"), is("test"));
        assertThat(map.get(null), is(nullValue()));
        assertThat(map.get("test3"), is(nullValue()));
        assertThat(map.getAt(0), is(nullValue()));

    assertTrue(makeEmptyMap().equals(map));
    assertEquals(emptyMap(), map);
    assertFalse(map.equals(emptySet()));
    // noinspection ObjectEqualsNull
    assertFalse(map.equals(null));
  }

  public void testGet() {
    Map<K, V> map;
    try {
      map = makePopulatedMap();
    } catch (UnsupportedOperationException e) {
      return;
    }

    for (Entry<K, V> entry : map.entrySet()) {