package xturbo_test

import (
	"bytes"
	"testing"

	"bnema.dev/xturbo"
	"bnema.dev/xturbo/internal/xtest"
	"bnema.dev/xturbo/xproto"
)

func TestBigRequestGolden(t *testing.T) {
	prefix, err := xtest.LoadHex("testdata/golden/xproto/ChangePropertyBig.req.hex")
	if err != nil {
		t.Fatal(err)
	}
	data := make([]byte, 262120)
	for i := range data {
		data[i] = byte(i)
	}
	want := append(prefix, data...)

	b := xturbo.NewBuf(0)
	if xproto.ChangeProperty(b, xproto.PropModeReplace, 0x0300009f, 0xe7, 0x1f, 8, uint32(len(data)), data) != 0 || b.Err() != xturbo.ErrRequestTooLarge || b.Len() != 0 {
		t.Fatal("core limit must reject a big request before BIG-REQUESTS is enabled")
	}

	b = xturbo.NewBuf(0)
	xturbo.SetMaxReqWords(b, 0x400000)
	if xproto.ChangeProperty(b, xproto.PropModeReplace, 0x0300009f, 0xe7, 0x1f, 8, uint32(len(data)), data) != 1 || b.Err() != nil {
		t.Fatal(b.Err())
	}
	if !bytes.Equal(b.Bytes(), want) {
		t.Fatalf("got %x want %x", b.Bytes()[:32], want[:32])
	}
}