From 20c03417b03f42263ad6523e3d41bac7b5861d2f Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Sun, 18 Sep 2022 14:04:05 +0300
Subject: [PATCH] Add is_range_test3

---
 test/Jamfile.v2         |  2 ++
 test/is_range_test3.cpp | 41 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)
 create mode 100644 test/is_range_test3.cpp

diff --git a/test/Jamfile.v2 b/test/Jamfile.v2
index c2daf95..814200a 100644
--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@@ -97,3 +97,5 @@ run hash_unordered_multimap_test.cpp ;
 
 run hash_unordered_set_test.cpp ;
 run hash_unordered_map_test.cpp ;
+
+run is_range_test3.cpp ;
diff --git a/test/is_range_test3.cpp b/test/is_range_test3.cpp
new file mode 100644
index 0000000..58b2d34
--- /dev/null
+++ b/test/is_range_test3.cpp
@@ -0,0 +1,41 @@
+// Copyright 2022 Peter Dimov.
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/type_traits/integral_constant.hpp>
+
+struct X1
+{
+    char const* begin() const;
+    char const* end() const;
+};
+
+struct X2
+{
+    char const* begin() const;
+    char const* end() const;
+};
+
+namespace boost
+{
+namespace container_hash
+{
+
+template<class T> struct is_range;
+template<> struct is_range<X2>: boost::false_type {};
+
+} // namespace container_hash
+} // namespace boost
+
+#include <boost/container_hash/is_range.hpp>
+#include <boost/core/lightweight_test_trait.hpp>
+
+int main()
+{
+    using boost::container_hash::is_range;
+
+    BOOST_TEST_TRAIT_TRUE((is_range<X1>));
+    BOOST_TEST_TRAIT_FALSE((is_range<X2>));
+
+    return boost::report_errors();
+}