Add test/append_character.cpp

test/Jamfile

@@ -41,6 +41,7 @@ run hash_append_range_2.cpp ;
 run append_integer.cpp ;
 run append_bool.cpp ;
 run append_byte_sized.cpp ;
+run append_character.cpp ;
 run append_set.cpp ;
 run append_map.cpp ;
 

test/append_character.cpp

@@ -0,0 +1,41 @@
+// Copyright 2024 Peter Dimov.
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/hash2/hash_append.hpp>
+#include <boost/hash2/fnv1a.hpp>
+#include <boost/core/lightweight_test.hpp>
+
+using namespace boost::hash2;
+
+template<class T> void test( std::uint32_t r )
+{
+    {
+        T v[ 95 ] = {};
+
+        fnv1a_32 h;
+        hash_append( h, {}, v );
+
+        BOOST_TEST_EQ( h.result(), r );
+    }
+}
+
+int main()
+{
+    std::uint32_t const r1 = 409807047;
+    std::uint32_t const r2 = 4291711997;
+    std::uint32_t const r4 = 3226601845;
+
+    test<char>( r1 );
+
+    test<char16_t>( r2 );
+    test<char32_t>( r4 );
+
+    test<wchar_t>( sizeof(wchar_t) == sizeof(std::uint16_t)? r2: r4 );
+
+#if defined(__cpp_char8_t) && __cpp_char8_t >= 201811L
+    test<char8_t>( r1 );
+#endif
+
+    return boost::report_errors();
+}