add test

chaindata/util/chaindata.go

@@ -16,7 +16,7 @@ func ChainDataPaths(chain string) (string, string) {
 		panic("could not get function source path")
 	}
 
-	chainPath := filepath.Join(filepath.Dir(thisPath), "..", "chain", chain)
+	chainPath := filepath.Join(filepath.Dir(thisPath), "..", "data", chain)
 
 	chaindataPath, err := filepath.Abs(chainPath)
 	if err != nil {

chaindata/util/chaindata_test.go

@@ -0,0 +1,42 @@
+package util_test
+
+import (
+	"testing"
+
+	"github.com/ethereum/go-ethereum/core/rawdb"
+
+	"github.com/cerc-io/eth-testing/chaindata/util"
+)
+
+func testReadChainData(t *testing.T, name string) {
+	ChainDataPath, AncientDataPath := util.ChainDataPaths(name)
+
+	kvdb, ldberr := rawdb.NewLevelDBDatabase(ChainDataPath, 1024, 256, "vdb-geth", false)
+	if ldberr != nil {
+		t.Fatal(ldberr)
+	}
+	edb, err := rawdb.NewDatabaseWithFreezer(kvdb, AncientDataPath, "vdb-geth", false)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer edb.Close()
+
+	hash := rawdb.ReadHeadHeaderHash(edb)
+	height := rawdb.ReadHeaderNumber(edb, hash)
+	if height == nil {
+		t.Fatalf("unable to read header height for header hash %s", hash)
+	}
+	header := rawdb.ReadHeader(edb, hash, *height)
+	if header == nil {
+		t.Fatalf("unable to read canonical header at height %d", height)
+	}
+}
+
+func TestReadChainData(t *testing.T) {
+	for _, name := range []string{"small", "medium"} {
+		t.Run(name, func(t *testing.T) { testReadChainData(t, name) })
+	}
+}