From bf7a78594ee110f69b3977d8b86b46046e3ee473 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Mon, 28 Nov 2022 18:04:35 +0200
Subject: [PATCH] Add a test with a tuple-like described struct

---
 test/Jamfile.v2                |  3 ++
 test/hash_tuple_like_test.cpp  |  2 +-
 test/hash_tuple_like_test2.cpp | 78 ++++++++++++++++++++++++++++++++++
 3 files changed, 82 insertions(+), 1 deletion(-)
 create mode 100644 test/hash_tuple_like_test2.cpp

diff --git a/test/Jamfile.v2 b/test/Jamfile.v2
index f4ded35..4406ab4 100644
--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@@ -121,4 +121,7 @@ run hash_integral_test2.cpp ;
 run hash_nullptr_test.cpp ;
 
 run is_tuple_like_test.cpp ;
+
 run hash_tuple_like_test.cpp ;
+run hash_tuple_like_test2.cpp
+  : : : <warnings>extra ;
diff --git a/test/hash_tuple_like_test.cpp b/test/hash_tuple_like_test.cpp
index d9b7fa0..47fa21e 100644
--- a/test/hash_tuple_like_test.cpp
+++ b/test/hash_tuple_like_test.cpp
@@ -16,7 +16,7 @@
 
 #if !defined(BOOST_NO_CXX11_HDR_TUPLE)
 
-# include <tuple>
+#include <tuple>
 
 namespace user
 {
diff --git a/test/hash_tuple_like_test2.cpp b/test/hash_tuple_like_test2.cpp
new file mode 100644
index 0000000..ba04558
--- /dev/null
+++ b/test/hash_tuple_like_test2.cpp
@@ -0,0 +1,78 @@
+// Copyright 2022 Peter Dimov.
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#if defined(__clang__)
+# pragma clang diagnostic ignored "-Wmismatched-tags"
+#endif
+
+#include <boost/container_hash/hash.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/type_traits/integral_constant.hpp>
+#include <boost/describe/class.hpp>
+#include <boost/config.hpp>
+#include <boost/config/pragma_message.hpp>
+#include <utility>
+
+#if defined(BOOST_NO_CXX11_HDR_TUPLE)
+
+BOOST_PRAGMA_MESSAGE( "Skipping test because BOOST_NO_CXX11_HDR_TUPLE is defined" )
+int main() {}
+
+#elif !defined(BOOST_DESCRIBE_CXX14)
+
+BOOST_PRAGMA_MESSAGE( "Skipping test because BOOST_DESCRIBE_CXX14 is not defined" )
+int main() {}
+
+#else
+
+namespace user
+{
+
+struct Y3
+{
+    int a;
+    int b;
+};
+
+BOOST_DESCRIBE_STRUCT(Y3, (), (a, b))
+
+} // namespace user
+
+namespace std
+{
+
+template<> struct tuple_size<user::Y3>: std::integral_constant<std::size_t, 2>
+{
+};
+
+} // namespace std
+
+namespace boost
+{
+namespace container_hash
+{
+
+    template<> struct is_tuple_like<user::Y3>: boost::false_type {};
+
+} // namespace container_hash
+} // namespace boost
+
+template<class T> std::size_t hv( T const& t )
+{
+    return boost::hash<T>()( t );
+}
+
+int main()
+{
+    {
+        user::Y3 tp = { 1, 2 };
+        int const a[] = { 1, 2 };
+
+        BOOST_TEST_EQ( hv(tp), hv(a) );
+    }
+
+    return boost::report_errors();
+}
+
+#endif