private var server: MockWebServer? = null

  @BeforeEach fun setUp(server: MockWebServer?) {
    this.server = server
  }

  @AfterEach fun tearDown() {
    ProxySelector.setDefault(DEFAULT_PROXY_SELECTOR)
    CookieManager.setDefault(DEFAULT_COOKIE_HANDLER)
    ResponseCache.setDefault(DEFAULT_RESPONSE_CACHE)
  }

  @Test fun durationDefaults() {
    val client = clientTestRule.newClient()