From 88850fadb5d5c3bce5ca2959b81cca1cd067c8ca Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sat, 26 Jun 2021 17:36:36 +0100
Subject: General purpose optional stream<<

---
 test/helpers.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'test')

diff --git a/test/helpers.h b/test/helpers.h
index 107eda5..59ae18d 100644
--- a/test/helpers.h
+++ b/test/helpers.h
@@ -4,6 +4,8 @@
 #include <concepts>
 #include <cstddef>
 #include <ctime>
+#include <iostream>
+#include <optional>
 
 inline constexpr std::byte operator""_b(const unsigned long long hex)
 {
@@ -24,6 +26,18 @@ namespace std {
 	{
 		return to_integer<T>(b) != i;
 	}
+
+	template<typename T>
+	ostream &
+	operator<<(ostream & s, const std::optional<T> & o)
+	{
+		if (o) {
+			return s << *o;
+		}
+		else {
+			return s << "-";
+		}
+	}
 }
 
 inline struct tm
-- 
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