cmd/devp2p/internal/ethtest: update tests for eth/67 (ethereum#25306)

- fixed conflicts: cmd/devp2p/internal/ethtest/helpers.go,
                   cmd/devp2p/internal/ethtest/snapTypes.go,
                   cmd/devp2p/internal/ethtest/suite.go

cmd/devp2p/internal/ethtest/chain.go

@@ -96,12 +96,12 @@ func (c *Chain) Head() *types.Block {
 	return c.blocks[c.Len()-1]
 }
 
-func (c *Chain) GetHeaders(req GetBlockHeaders) (BlockHeaders, error) {
+func (c *Chain) GetHeaders(req *GetBlockHeaders) ([]*types.Header, error) {
 	if req.Amount < 1 {
 		return nil, fmt.Errorf("no block headers requested")
 	}
 
-	headers := make(BlockHeaders, req.Amount)
+	headers := make([]*types.Header, req.Amount)
 	var blockNumber uint64
 
 	// range over blocks to check if our chain has the requested header

cmd/devp2p/internal/ethtest/chain_test.go

@@ -21,6 +21,7 @@ import (
 	"strconv"
 	"testing"
 
+	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/eth/protocols/eth"
 	"github.com/ethereum/go-ethereum/p2p"
 	"github.com/stretchr/testify/assert"
@@ -140,18 +141,18 @@ func TestChain_GetHeaders(t *testing.T) {
 
 	var tests = []struct {
 		req      GetBlockHeaders
-		expected BlockHeaders
+		expected []*types.Header
 	}{
 		{
 			req: GetBlockHeaders{
-				Origin: eth.HashOrNumber{
-					Number: uint64(2),
+				GetBlockHeadersPacket: &eth.GetBlockHeadersPacket{
+					Origin:  eth.HashOrNumber{Number: uint64(2)},
+					Amount:  uint64(5),
+					Skip:    1,
+					Reverse: false,
 				},
-				Amount:  uint64(5),
-				Skip:    1,
-				Reverse: false,
 			},
-			expected: BlockHeaders{
+			expected: []*types.Header{
 				chain.blocks[2].Header(),
 				chain.blocks[4].Header(),
 				chain.blocks[6].Header(),
@@ -161,37 +162,37 @@ func TestChain_GetHeaders(t *testing.T) {
 		},
 		{
 			req: GetBlockHeaders{
-				Origin: eth.HashOrNumber{
-					Number: uint64(chain.Len() - 1),
+				GetBlockHeadersPacket: &eth.GetBlockHeadersPacket{
+					Origin:  eth.HashOrNumber{Number: uint64(chain.Len() - 1)},
+					Amount:  uint64(3),
+					Skip:    0,
+					Reverse: true,
 				},
-				Amount:  uint64(3),
-				Skip:    0,
-				Reverse: true,
 			},
-			expected: BlockHeaders{
+			expected: []*types.Header{
 				chain.blocks[chain.Len()-1].Header(),
 				chain.blocks[chain.Len()-2].Header(),
 				chain.blocks[chain.Len()-3].Header(),
 			},
 		},
 		{
 			req: GetBlockHeaders{
-				Origin: eth.HashOrNumber{
-					Hash: chain.Head().Hash(),
+				GetBlockHeadersPacket: &eth.GetBlockHeadersPacket{
+					Origin:  eth.HashOrNumber{Hash: chain.Head().Hash()},
+					Amount:  uint64(1),
+					Skip:    0,
+					Reverse: false,
 				},
-				Amount:  uint64(1),
-				Skip:    0,
-				Reverse: false,
 			},
-			expected: BlockHeaders{
+			expected: []*types.Header{
 				chain.Head().Header(),
 			},
 		},
 	}
 
 	for i, tt := range tests {
 		t.Run(strconv.Itoa(i), func(t *testing.T) {
-			headers, err := chain.GetHeaders(tt.req)
+			headers, err := chain.GetHeaders(&tt.req)
 			if err != nil {
 				t.Fatal(err)
 			}