From 249cecdb50294b15f27e07bff809cc452c93e021 Mon Sep 17 00:00:00 2001
From: light7734 <light7734@tuta.io>
Date: Thu, 18 Sep 2025 19:32:11 +0330
Subject: [PATCH] refactor(tests): printable now checks if the type is
 std::formattable

---
 modules/test/public/expects.hpp | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/modules/test/public/expects.hpp b/modules/test/public/expects.hpp
index 8878092..35acc6a 100644
--- a/modules/test/public/expects.hpp
+++ b/modules/test/public/expects.hpp
@@ -7,9 +7,12 @@
 namespace lt::test {
 
 template<typename T>
-concept Printable = requires(std::ostream &stream, T value) {
-	{ stream << value } -> std::same_as<std::ostream &>;
-} || requires(std::ostream &stream, T value) {
+concept Formattable = requires(T &v, std::format_context ctx) {
+	std::formatter<std::remove_cvref_t<T>>().format(v, ctx);
+};
+
+template<typename T>
+concept Printable = Formattable<T> || requires(std::ostream &stream, T value) {
 	{ stream << std::to_underlying<T>(value) } -> std::same_as<std::ostream &>;
 };