From 5953ea7cb5e728ced79acf3513f507177b02bde7 Mon Sep 17 00:00:00 2001
From: King_DuckZ <king_duckz@gmx.com>
Date: Sun, 29 Jul 2018 11:17:59 +0100
Subject: [PATCH] Add a random numbers test with a fixed seed.

---
 include/duckhandy/int_conv.hpp |  6 ++++++
 test/unit/int_conv_test.cpp    | 18 ++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/include/duckhandy/int_conv.hpp b/include/duckhandy/int_conv.hpp
index 1067022..c8fa5c2 100644
--- a/include/duckhandy/int_conv.hpp
+++ b/include/duckhandy/int_conv.hpp
@@ -296,6 +296,12 @@ namespace dhandy {
 	std::string to_string (I num) {
 		return std::string(int_to_ary(num).to_string_view());
 	}
+
+	template <std::size_t S>
+	std::string operator+ (std::string a, const ReversedSizedArray<char, S>& b) {
+		a.append(b.data(), b.size() - 1);
+		return a;
+	}
 #endif
 } //namespace dhandy
 
diff --git a/test/unit/int_conv_test.cpp b/test/unit/int_conv_test.cpp
index c911f40..75497eb 100644
--- a/test/unit/int_conv_test.cpp
+++ b/test/unit/int_conv_test.cpp
@@ -21,6 +21,8 @@
 #include "sprout/cstring/strlen.hpp"
 #include "sprout/preprocessor/comma.hpp"
 #include <cstdint>
+#include <random>
+#include <string>
 
 template <typename T> using int_info_10 = dhandy::implem::int_info<T, 10>;
 template <typename T> using int_info_16 = dhandy::implem::int_info<T, 16>;
@@ -109,6 +111,22 @@ TEST_CASE ("Check int to char array conversions", "[s2i][int_conv]") {
 	num = 0xFFFFFFFFFFFFFFFF;
 	CHECK(int_to_ary<__int128_t SPROUT_PP_COMMA() 16>(num * 0x10000 + 0xffff) == "ffffffffffffffffffff");
 #endif
+
+	{
+		//Try a random test, which should not compile as constexpr
+		std::mt19937 gen;
+		gen.seed(1234);
+		for (int z = 0; z < 10; ++z) {
+			const int num = gen();
+			CHECK(int_to_ary(num) == std::to_string(num));
+		}
+
+		const int num = gen();
+		std::string hello = "hello world";
+		std::string hello1 = hello + " " + int_to_ary(num);
+		std::string hello2 = hello + " " + std::to_string(num);
+		CHECK(hello1 == hello2);
+	}
 }
 
 TEST_CASE ("Check char array to int conversions", "[i2s][int_conv]") {