// re-order
    getAll(cache, asList(0, 1, 2));
    CacheTesting.drainRecencyQueues(cache);
    assertThat(keySet).containsExactly(3, 4, 5, 6, 7, 8, 9, 0, 1, 2);

    // evict 3, 4, 5
    getAll(cache, asList(10, 11, 12));
    CacheTesting.drainRecencyQueues(cache);
    assertThat(keySet).containsExactly(6, 7, 8, 9, 0, 1, 2, 10, 11, 12);

    // re-order
    getAll(cache, asList(6, 7, 8));

        ContentOutputStream cos = new ContentOutputStream(5, Curl.tmpDir);
        cos.write(new byte[] { 0, 1, 2 });
        assertTrue(cos.isInMemory());
        cos.write(new byte[] { 3, 4, 5 }); // Total 6 bytes, exceeds threshold of 5
        assertFalse(cos.isInMemory());
        File file = cos.getFile();
        assertTrue(file.exists());
        cos.close();
    }

    @Test

    assertListImmutable(result);
    assertEquals(ImmutableList.of(-1, 3, 4, 5), result);
  }

  public void testLeastOfIterable_simple_n_withNullElement() {
    List<@Nullable Integer> list = asList(3, 4, 5, null, -1);
    List<@Nullable Integer> result =
        Ordering.<Integer>natural().nullsLast().leastOf(list, list.size());
    assertTrue(result instanceof RandomAccess);
    assertListImmutable(result);

    assertListImmutable(result);
    assertEquals(ImmutableList.of(-1, 3, 4, 5), result);
  }

  public void testLeastOfIterable_simple_n_withNullElement() {
    List<@Nullable Integer> list = asList(3, 4, 5, null, -1);
    List<@Nullable Integer> result =
        Ordering.<Integer>natural().nullsLast().leastOf(list, list.size());
    assertTrue(result instanceof RandomAccess);
    assertListImmutable(result);

      MockResponse(
        headers =
          headersOf(
            "B",
            "123",
            "B",
            "234",
          ),
      ),
    )
    executeSynchronously("/", "A", "345", "A", "456")
      .assertCode(200)
      .assertHeader("B", "123", "234")
    val recordedRequest = server.takeRequest()
    assertThat(recordedRequest.headers.values("A")).containsExactly("345", "456")
  }