set up test

go.mod

@@ -26,6 +26,7 @@ require (
 	github.com/smartystreets/assertions v1.0.0 // indirect
 	github.com/spf13/cobra v1.0.0
 	github.com/spf13/viper v1.7.0
+	github.com/vulcanize/go-eth-state-node-iterator v0.0.1-alpha
 	go.uber.org/atomic v1.9.0 // indirect
 	go.uber.org/goleak v1.1.11 // indirect
 	go.uber.org/multierr v1.7.0 // indirect

pkg/snapshot/service_test.go

@@ -0,0 +1,63 @@
+package snapshot
+
+import (
+	"path/filepath"
+	"testing"
+
+	ethNode "github.com/ethereum/go-ethereum/statediff/indexer/node"
+	"github.com/ethereum/go-ethereum/statediff/indexer/postgres"
+)
+
+func testConfig(leveldbpath, ancientdbpath string) *Config {
+	dbParams := postgres.ConnectionParams{}
+	dbParams.Name = "snapshot_test"
+	dbParams.Hostname = "localhost"
+	dbParams.Port = 5432
+	dbParams.User = "tester"
+	dbParams.Password = "test_pw"
+	uri := postgres.DbConnectionString(dbParams)
+	dbconfig := postgres.ConnectionConfig{
+		MaxIdle:     0,
+		MaxLifetime: 0,
+		MaxOpen:     4,
+	}
+	nodeinfo := ethNode.Info{
+		ID:           "eth_node_id",
+		ClientName:   "eth_client",
+		GenesisBlock: "X",
+		NetworkID:    "eth_network",
+		ChainID:      0,
+	}
+
+	return &Config{
+		LevelDBPath:   leveldbpath,
+		AncientDBPath: ancientdbpath,
+		Node:          nodeinfo,
+		connectionURI: uri,
+		DBConfig:      dbconfig,
+	}
+}
+
+func TestCreateSnapshot(t *testing.T) {
+	datadir := t.TempDir()
+	config := testConfig(
+		filepath.Join(datadir, "leveldb"),
+		filepath.Join(datadir, "ancient"),
+	)
+
+	service, err := NewSnapshotService(config)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	params := SnapshotParams{Height: 1}
+	err = service.CreateSnapshot(params)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// err = service.CreateLatestSnapshot(0)
+	// if err != nil {
+	// 	t.Fatal(err)
+	// }
+}