package faketls

import (
	"bytes"
	"encoding/hex"
	"testing"
)

func TestBuildClientHello_Size(t *testing.T) {
	key, err := hex.DecodeString("5ba9cf5cf84698032e5300c864544dd0")
	if err != nil || len(key) != 16 {
		t.Fatalf("key: %v len %d", err, len(key))
	}
	domain, err := hex.DecodeString("632e6170692e73746570612e6f6e65")
	if err != nil {
		t.Fatal(err)
	}
	ch, err := BuildClientHello(key, domain)
	if err != nil {
		t.Fatal(err)
	}
	if len(ch.Record) != 517 {
		t.Fatalf("record len %d", len(ch.Record))
	}
	if !bytes.HasPrefix(ch.Record, []byte{0x16, 0x03, 0x01}) {
		t.Fatal("bad record header")
	}
	pl := int(ch.Record[3])<<8 | int(ch.Record[4])
	if pl != 512 {
		t.Fatalf("record payload len %d", pl)
	}
}