can fetch zenshuu with tag

src/feeds/db_test.go

@@ -15,7 +15,7 @@ func TestFeeds(t *testing.T) {
 	t.Run("crud", func(t *testing.T) {
 		ctx := db.Test(t, ctx)
 
-		id, err := feeds.Insert(ctx, "url", "cron", "pattern")
+		id, err := feeds.Insert(ctx, "url", "cron", "pattern", "tag")
 		if err != nil {
 			t.Fatal("cannot insert:", err)
 		}
@@ -51,6 +51,9 @@ func TestFeeds(t *testing.T) {
 		if got.Version.Pattern != "pattern" {
 			t.Error("bad version.pattern")
 		}
+		if got.Version.Tag != "tag" {
+			t.Error("bad version.tag")
+		}
 
 		if !got.Execution.Executed.IsZero() {
 			t.Error("execution.executed")