val call = client.newCall(request)
    assertFailsWith<IOException> {
      call.execute()
    }.also { expected ->
      when (expected) {
        is SSLHandshakeException -> {
          // On Android, the handshake fails before the certificate pinner runs.
          assertThat(expected.message!!).contains("Could not validate certificate")
        }
        is SSLPeerUnverifiedException -> {