Tidy up core sources:

The core headers are moved to their own directory (but remain in
the same namespace).

test/core/buffer_cat.cpp

@@ -0,0 +1,134 @@
+//
+// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+// Test that header file is self-contained.
+#include <beast/core/buffer_cat.hpp>
+
+#include <beast/unit_test/suite.hpp>
+#include <boost/asio/buffer.hpp>
+#include <boost/asio/streambuf.hpp>
+#include <iterator>
+#include <list>
+#include <vector>
+
+namespace beast {
+
+class buffer_cat_test : public unit_test::suite
+{
+public:
+    template< class Iterator >
+    static
+    std::reverse_iterator<Iterator>
+    make_reverse_iterator( Iterator i )
+    {
+        return std::reverse_iterator<Iterator>(i);
+    }
+
+    void testBufferCat()
+    {
+        using boost::asio::buffer_size;
+        using boost::asio::const_buffer;
+        char buf[10];
+        std::list<const_buffer> b1;
+        std::vector<const_buffer> b2{
+            const_buffer{buf+0, 1},
+            const_buffer{buf+1, 2}};
+        std::list<const_buffer> b3;
+        std::array<const_buffer, 3> b4{{
+            const_buffer{buf+3, 1},
+            const_buffer{buf+4, 2},
+            const_buffer{buf+6, 3}}};
+        std::list<const_buffer> b5{
+            const_buffer{buf+9, 1}};
+        std::list<const_buffer> b6;
+        auto bs = buffer_cat(
+            b1, b2, b3, b4, b5, b6);
+        expect(buffer_size(bs) == 10);
+        std::vector<const_buffer> v;
+        for(auto iter = make_reverse_iterator(bs.end());
+                iter != make_reverse_iterator(bs.begin()); ++iter)
+            v.emplace_back(*iter);
+        expect(buffer_size(bs) == 10);
+        decltype(bs) bs2(bs);
+        auto bs3(std::move(bs));
+        bs = bs2;
+        bs3 = std::move(bs2);
+        {
+            boost::asio::streambuf sb1, sb2;
+            expect(buffer_size(buffer_cat(
+                sb1.prepare(5), sb2.prepare(7))) == 12);
+            sb1.commit(5);
+            sb2.commit(7);
+            expect(buffer_size(buffer_cat(
+                sb1.data(), sb2.data())) == 12);
+        }
+    }
+
+    void testIterators()
+    {
+        using boost::asio::buffer_size;
+        using boost::asio::const_buffer;
+        char buf[9];
+        std::vector<const_buffer> b1{
+            const_buffer{buf+0, 1},
+            const_buffer{buf+1, 2}};
+        std::array<const_buffer, 3> b2{{
+            const_buffer{buf+3, 1},
+            const_buffer{buf+4, 2},
+            const_buffer{buf+6, 3}}};
+        auto bs = buffer_cat(b1, b2);
+
+        try
+        {
+            std::size_t n = 0;
+            for(auto it = bs.begin(); n < 100; ++it)
+                ++n;
+            fail();
+        }
+        catch(std::exception const&)
+        {
+            pass();
+        }
+
+        try
+        {
+            std::size_t n = 0;
+            for(auto it = bs.end(); n < 100; --it)
+                ++n;
+            fail();
+        }
+        catch(std::exception const&)
+        {
+            pass();
+        }
+
+        try
+        {
+            expect((buffer_size(*bs.end()) == 0, false));
+        }
+        catch(std::exception const&)
+        {
+            pass();
+        }
+        auto bs2 = bs;
+        expect(bs.begin() != bs2.begin());
+        expect(bs.end() != bs2.end());
+        decltype(bs)::const_iterator it;
+        decltype(bs2)::const_iterator it2;
+        expect(it == it2);
+    }
+
+    void run() override
+    {
+        testBufferCat();
+        testIterators();
+    }
+};
+
+BEAST_DEFINE_TESTSUITE(buffer_cat,core,beast);
+
+} // beast