test: add storages unittest

internal/storages/storages.go

@@ -32,10 +32,10 @@ func Initialize(repoRoot string) error {
 }
 
 func Get(name string) (storage.Storage, error) {
-	strg, ok := s.storages[name]
+	storage, ok := s.storages[name]
 	if !ok {
 		return nil, fmt.Errorf("wrong storage name")
 	}
 
-	return strg, nil
+	return storage, nil
 }

internal/storages/storages_test.go

@@ -0,0 +1,36 @@
+package storages
+
+import (
+	"io/ioutil"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestInitialize(t *testing.T) {
+	dir, err := ioutil.TempDir("", "TestInitialize")
+	require.Nil(t, err)
+
+	err = Initialize(dir)
+	require.Nil(t, err)
+
+	// Initialize twice
+	err = Initialize(dir)
+	require.Contains(t, err.Error(), "create blockchain storage: resource temporarily unavailable")
+}
+
+func TestGet(t *testing.T) {
+	dir, err := ioutil.TempDir("", "TestGet")
+	require.Nil(t, err)
+
+	err = Initialize(dir)
+	require.Nil(t, err)
+
+	s, err := Get(BlockChain)
+	require.Nil(t, err)
+	require.NotNil(t, s)
+
+	s, err = Get("WrongName")
+	require.NotNil(t, err)
+	require.Nil(t, s)
+}