}

  @Test
  fun upgradeWithEmptyRequestBody() {
    executeAndCheckUpgrade(upgradeRequest().newBuilder().post(RequestBody.EMPTY).build())
  }

  @Test
  fun upgradeWithNonEmptyRequestBody() {
    executeAndCheckUpgrade(
      upgradeRequest()
        .newBuilder()
        .post("Hello".toRequestBody())
        .build(),
    )
  }

  @Test
  fun upgradeHttps() {