val url = server.url("/")
    assertThat(get(url).body.string()).isEqualTo("A")
    val ifNoneMatch = AtomicReference<String?>()
    client =
      client
        .newBuilder()
        .addNetworkInterceptor(
          Interceptor { chain: Interceptor.Chain ->
            ifNoneMatch.compareAndSet(null, chain.request().header("If-None-Match"))
            chain.proceed(chain.request())
          },

  }

  @Test
  fun cancelImmediatelyAfterEnqueue() {
    server.enqueue(MockResponse())
    val latch = CountDownLatch(1)
    client =
      client
        .newBuilder()
        .addNetworkInterceptor(
          Interceptor { chain: Interceptor.Chain ->
            try {
              latch.await()
            } catch (e: InterruptedException) {
              throw AssertionError(e)
            }