package state

import (
	"sync"
	"testing"

	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
)

func TestBeaconState_SlotDataRace(t *testing.T) {
	headState, err := InitializeFromProto(&pb.BeaconState{Slot: 1})
	if err != nil {
		t.Fatal(err)
	}

	wg := sync.WaitGroup{}
	wg.Add(2)
	go func() {
		if err := headState.SetSlot(uint64(0)); err != nil {
			t.Fatal(err)
		}
		wg.Done()
	}()
	go func() {
		headState.Slot()
		wg.Done()
	}()

	wg.Wait()
}

func TestNilState_NoPanic(t *testing.T) {
	var st *BeaconState
	defer func() {
		if r := recover(); r != nil {
			t.Errorf("Method panicked when it was not supposed to: %v", r)
		}
	}()
	// retrieve elements from nil state
	_ = st.GenesisValidatorRoot()
	_ = st.Eth1Data()
}