return ImmutableList.of(
        createCacheBuilder(),
        createCacheBuilder().weakValues(),
        createCacheBuilder().softValues(),
        createCacheBuilder().weakKeys(),
        createCacheBuilder().weakKeys().weakValues(),
        createCacheBuilder().weakKeys().softValues());
  }

  // entries and values

    assertSame(loader, cache.localCache.defaultLoader);
  }

  // null parameters test

  public void testNullParameters() throws Exception {
    NullPointerTester tester = new NullPointerTester();
    CacheLoader<Object, Object> loader = identityLoader();
    tester.testAllPublicInstanceMethods(makeCache(createCacheBuilder(), loader));
  }

  // stats tests

        combinations,
        new Function<List<Object>, CacheBuilder<Object, Object>>() {
          @Override
          public CacheBuilder<Object, Object> apply(List<Object> combination) {
            return createCacheBuilder(
                (Integer) combination.get(0),
                (Integer) combination.get(1),
                (Integer) combination.get(2),
                (DurationSpec) combination.get(3),