callback.await(request2.url).assertCode(200).assertBody("A")
    assertThat(server.takeRequest().headers["If-None-Match"]).isEqualTo("v1")
  }

  @Test
  fun conditionalCacheMiss() {
    server.enqueue(
      MockResponse(
        headers =
          headersOf(
            "ETag",
            "v1",
            "Vary",
            "Accept-Charset",