From 70dabdfdc49cbd0d22d25e07fba78d2fcd90a974 Mon Sep 17 00:00:00 2001
From: Jason Cobb <jason.e.cobb@gmail.com>
Date: Sun, 28 Feb 2021 21:25:33 -0500
Subject: [PATCH] Add test for output_iterator

---
 test/format-test.cc | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/test/format-test.cc b/test/format-test.cc
index 00982f38..a383c389 100644
--- a/test/format-test.cc
+++ b/test/format-test.cc
@@ -12,6 +12,7 @@
 #include <climits>
 #include <cmath>
 #include <cstring>
+#include <iterator>
 #include <list>
 #include <memory>
 #include <string>
@@ -168,6 +169,12 @@ TEST(IteratorTest, TruncatingIteratorDefaultConstruct) {
   EXPECT_EQ(it.count(), 0);
 }
 
+#ifdef __cpp_lib_ranges
+TEST(IteratorTest, TruncatingIteratorOutputIterator) {
+  static_assert(std::output_iterator<fmt::detail::truncating_iterator<char*>>);
+}
+#endif
+
 TEST(IteratorTest, TruncatingBackInserter) {
   std::string buffer;
   auto bi = std::back_inserter(buffer);