Test Repeat success/failure

test/helpers.go

@@ -26,3 +26,11 @@ func ErrReaderAt(err error) io.ReaderAt {
 func StateIsAt[Input any](t test.T, s gigaparsec.State[Input], pos uint64) {
 	test.EqOp(t, pos, s.Pos(), test.Sprintf("expected parser state to be at position %d, got %d", pos, s.Pos()))
 }
+
+func SliceOfN[T any](value T, n int) []T {
+	s := make([]T, n)
+	for i := range s {
+		s[i] = value
+	}
+	return s
+}