"protocols containing h2_prior_knowledge cannot use other protocols: " +
          "[h2_prior_knowledge, h2_prior_knowledge]",
      )
    }
  }

  @Test fun testH2PriorKnowledgeOkHttpClientConstructionSuccess() {
    val okHttpClient =
      OkHttpClient.Builder()
        .protocols(listOf(Protocol.H2_PRIOR_KNOWLEDGE))
        .build()
    assertThat(okHttpClient.protocols.size).isEqualTo(1)