improve documentation and move one test

blockpool/test/hash_pool.go

@@ -7,8 +7,12 @@ import (
 	"github.com/ethereum/go-ethereum/crypto"
 )
 
-// test helpers
-// TODO: move into common test helper package (see p2p/crypto etc.)
+// hashPool is a test helper, that allows random hashes to be referred to by integers
+type TestHashPool struct {
+	intToHash
+	hashToInt
+	lock sync.Mutex
+}
 
 func NewHashPool() *TestHashPool {
 	return &TestHashPool{intToHash: make(intToHash), hashToInt: make(hashToInt)}
@@ -18,13 +22,6 @@ type intToHash map[int]common.Hash
 
 type hashToInt map[common.Hash]int
 
-// hashPool is a test helper, that allows random hashes to be referred to by integers
-type TestHashPool struct {
-	intToHash
-	hashToInt
-	lock sync.Mutex
-}
-
 func newHash(i int) common.Hash {
 	return common.BytesToHash(crypto.Sha3([]byte(string(i))))
 }

blockpool/test/logger.go

@@ -9,6 +9,8 @@ import (
 	"github.com/ethereum/go-ethereum/logger"
 )
 
+// logging in tests
+
 var once sync.Once
 
 /* usage:

blockpool/test/util.go

@@ -6,6 +6,8 @@ import (
 	"time"
 )
 
+// miscellaneous test helpers
+
 func CheckInt(name string, got int, expected int, t *testing.T) (err error) {
 	if got != expected {
 		t.Errorf("status for %v incorrect. expected %v, got %v", name, expected, got)