assertThat(map.isEmpty(), is(not(true)));
        map.clear();
        assertThat(map.isEmpty(), is(true));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testContainsValue() throws Exception {
        assertThat(map.containsValue("test2"), is(true));
        assertThat(map.containsValue("test3"), is(not(true)));
    }

    /**
     * @throws Exception
     */
    @Test

    } else {
      try {
        boolean unused2 = map.containsKey(null);
      } catch (NullPointerException optional) {
      }
    }
    assertInvariants(map);
  }

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