2 files changed, 19 insertions, 7 deletions
diff --git a/dbstore/dbstore.go b/dbstore/dbstore.go
index 0ab6fcf..11ad02c 100644
--- a/dbstore/dbstore.go
+++ b/dbstore/dbstore.go
@@ -13,22 +13,33 @@ import (
 //go:embed sql
 var sqlFs embed.FS
 
+// sqlite3 backing store
 type DbStore struct {
   db *db_sql.DB
 }
 
-// open database
-func Open(path string) (DbStore, error) {
+// Open database.
+//
+// This function is called by Open().  It is a separate package-private
+// function to make Open() easier to test.
+func openFull(dbType, path string) (DbStore, error) {
   var r DbStore
+
   // init db
-  if db, err := db_sql.Open("sqlite3", path); err != nil {
+  if db, err := db_sql.Open(dbType, path); err != nil {
     return r, err
   } else {
+    // save handle
     r.db = db
     return r, nil
   }
 }
 
+// Open database
+func Open(path string) (DbStore, error) {
+  return openFull("sqlite3", path)
+}
+
 // initialized database version
 const initDbVersion = 314159
 
diff --git a/dbstore/dbstore_test.go b/dbstore/dbstore_test.go
index fe653dc..1e03d72 100644
--- a/dbstore/dbstore_test.go
+++ b/dbstore/dbstore_test.go
@@ -198,19 +198,20 @@ func seedTestDb(ctx context.Context, db DbStore) error {
   // TODO: seed with other data
 }
 
-func TestOpen(t *testing.T) {
+func TestOpenFull(t *testing.T) {
   tests := []struct {
     name string
+    dbType string
     path string
     exp bool
   } {
-    { "pass", "./testdata/test-open.db", true },
-    // { "fail", "file://invalid/foobar", false },
+    { "pass", "sqlite3", "./testdata/test-open.db", true },
+    { "fail", "invalid driver", "file://invalid/foobar", false },
   }
 
   for _, test := range(tests) {
     t.Run(test.name, func(t *testing.T) {
-      got, err := Open(test.path)
+      got, err := openFull(test.dbType, test.path)
       if test.exp && err != nil {
         t.Error(err)
       } else if !test.exp && err == nil {