eth/downloader: remove uneeded testing functions

eth/downloader/downloader_test.go

@@ -214,18 +214,13 @@ func TestBlockTaking(t *testing.T) {
 
 // Tests that an inactive downloader will not accept incoming hashes and blocks.
 func TestInactiveDownloader(t *testing.T) {
-	// Create a small enough block chain to download and the tester
-	targetBlocks := blockCacheLimit - 15
-	hashes := createHashes(0, targetBlocks)
-	blocks := createBlocksFromHashSet(createHashSet(hashes))
-
 	tester := newTester(t, nil, nil)
 
 	// Check that neither hashes nor blocks are accepted
-	if err := tester.downloader.DeliverHashes("bad peer", hashes); err != errNoSyncActive {
+	if err := tester.downloader.DeliverHashes("bad peer", []common.Hash{}); err != errNoSyncActive {
 		t.Errorf("error mismatch: have %v, want %v", err, errNoSyncActive)
 	}
-	if err := tester.downloader.DeliverBlocks("bad peer", blocks); err != errNoSyncActive {
+	if err := tester.downloader.DeliverBlocks("bad peer", []*types.Block{}); err != errNoSyncActive {
 		t.Errorf("error mismatch: have %v, want %v", err, errNoSyncActive)
 	}
 }

eth/downloader/queue_test.go

-package downloader
-
-import (
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/core/types"
-	"gopkg.in/fatih/set.v0"
-)
-
-func createHashSet(hashes []common.Hash) *set.Set {
-	hset := set.New()
-
-	for _, hash := range hashes {
-		hset.Add(hash)
-	}
-
-	return hset
-}
-
-func createBlocksFromHashSet(hashes *set.Set) []*types.Block {
-	blocks := make([]*types.Block, hashes.Size())
-
-	var i int
-	hashes.Each(func(v interface{}) bool {
-		blocks[i] = createBlock(i, common.Hash{}, v.(common.Hash))
-		i++
-		return true
-	})
-
-	return blocks
-}