test gorup

ledger/group_test.go

@@ -0,0 +1,13 @@
+package ledger
+
+import "testing"
+
+func TestGroup(t *testing.T) {
+	if got := GroupDate("^20..")(Delta{Date: "2021-01"}); got.Date != "2021" {
+		t.Error(got)
+	}
+
+	if got := GroupName("^[^:]*")(Delta{Name: "a:b:c"}); got.Name != "a" {
+		t.Error(got)
+	}
+}