val builder = OkHttpClient.Builder()
    assertFailsWith<IllegalArgumentException> {
      builder.protocols(listOf(Protocol.HTTP_1_0, Protocol.HTTP_1_1))
    }
  }

  @Test fun certificatePinnerEquality() {
    val clientA = clientTestRule.newClient()
    val clientB = clientTestRule.newClient()
    assertThat(clientB.certificatePinner).isEqualTo(clientA.certificatePinner)
  }