diff --git a/crl/crlstore/storetype_test.go b/crl/crlstore/storetype_test.go
new file mode 100644
index 0000000..2dffe57
--- /dev/null
+++ b/crl/crlstore/storetype_test.go
@@ -0,0 +1,26 @@
+package crlstore
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestStoreTypeToString(t *testing.T) {
+	tests := []struct {
+		storeType StoreType
+		expected  string
+	}{
+		{LevelDB, "Level DB"},
+		{Map, "Map"},
+		{StoreType(2), "unknown store type 2"},
+		{StoreType(-1), "unknown store type -1"},
+	}
+
+	for _, test := range tests {
+		t.Run(test.expected, func(t *testing.T) {
+			result := StoreTypeToString(test.storeType)
+			assert.Equal(t, test.expected, result)
+		})
+	}
+}