.tlsVersions(*arrayOf<String>())
        .build()
    }.also { expected ->
      assertThat(expected.message)
        .isEqualTo("At least one TLS version is required")
    }
  }

  @Test
  fun noCipherSuites() {
    assertFailsWith<IllegalArgumentException> {
      ConnectionSpec
        .Builder(ConnectionSpec.MODERN_TLS)
        .cipherSuites(*arrayOf<CipherSuite>())
        .build()
    }.also { expected ->