Squashed 'src/beast/' changes from 06f74f0..9f10b11

9f10b11 Set version to 1.0.0-b28
195f974 Fix HTTP split parse edge case:
264fd41 Restyle async result constructions
572a0eb Split out and rename test stream classes
95b6646 Tidy up some WebSocket javadocs
f6938d3 Set version to 1.0.0-b27
a6120cd Update copyright dates
c7bfe7d Add documentation building instructions
f6c91ce Tidy up tests and docs:
f03985f Move basic_streambuf to streambuf.hpp (API Change):
b8639a7 Invoke callback on pings and pongs (API Change):

git-subtree-dir: src/beast
git-subtree-split: 9f10b11eff58aeb793b673c8a8cb6e2bee3db621

test/core/handler_ptr.cpp

@@ -1,5 +1,5 @@
 //
-// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail dot com)
+// Copyright (c) 2013-2017 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)
@@ -7,3 +7,74 @@
 
 // Test that header file is self-contained.
 #include <beast/core/handler_ptr.hpp>
+
+#include <beast/unit_test/suite.hpp>
+#include <exception>
+#include <utility>
+
+namespace beast {
+
+class handler_ptr_test : public beast::unit_test::suite
+{
+public:
+    struct handler
+    {
+        handler() = default;
+        handler(handler const&) = default;
+
+        void
+        operator()(bool& b) const
+        {
+            b = true;
+        }
+    };
+
+    struct T
+    {
+        T(handler&)
+        {
+        }
+
+        ~T()
+        {
+        }
+    };
+
+    struct U
+    {
+        U(handler&)
+        {
+            throw std::exception{};
+        }
+    };
+
+    void
+    run() override
+    {
+        handler h;
+        handler_ptr<T, handler> p1{h};
+        handler_ptr<T, handler> p2{p1};
+        try
+        {
+            handler_ptr<U, handler> p3{h};
+            fail();
+        }
+        catch(std::exception const&)
+        {
+            pass();
+        }
+        catch(...)
+        {
+            fail();
+        }
+        handler_ptr<T, handler> p4{std::move(h)};
+        bool b = false;
+        p4.invoke(std::ref(b));
+        BEAST_EXPECT(b);
+    }
+};
+
+BEAST_DEFINE_TESTSUITE(handler_ptr,core,beast);
+
+} // beast
+