Refactor test build scripts

test/beast/core/buffer_prefix.cpp

@@ -0,0 +1,192 @@
+//
+// Copyright (c) 2016-2017 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)
+//
+// Official repository: https://github.com/boostorg/beast
+//
+
+// Test that header file is self-contained.
+#include <boost/beast/core/buffer_prefix.hpp>
+
+#include <boost/beast/core/consuming_buffers.hpp>
+#include <boost/beast/core/type_traits.hpp>
+#include <boost/beast/unit_test/suite.hpp>
+#include <boost/asio/buffer.hpp>
+#include <string>
+
+namespace boost {
+namespace beast {
+
+BOOST_STATIC_ASSERT(
+    std::is_same<boost::asio::const_buffer, decltype(
+        buffer_prefix(0,
+            std::declval<boost::asio::const_buffer>()))>::value);
+
+BOOST_STATIC_ASSERT(
+    is_const_buffer_sequence<decltype(
+        buffer_prefix(0,
+            std::declval<boost::asio::const_buffers_1>()))>::value);
+
+BOOST_STATIC_ASSERT(
+    std::is_same<boost::asio::mutable_buffer, decltype(
+        buffer_prefix(0,
+            std::declval<boost::asio::mutable_buffer>()))>::value);
+BOOST_STATIC_ASSERT(
+    is_mutable_buffer_sequence<decltype(
+        buffer_prefix(0,
+            std::declval<boost::asio::mutable_buffers_1>()))>::value);
+
+class buffer_prefix_test : public beast::unit_test::suite
+{
+public:
+    template<class ConstBufferSequence>
+    static
+    std::size_t
+    bsize1(ConstBufferSequence const& bs)
+    {
+        using boost::asio::buffer_size;
+        std::size_t n = 0;
+        for(auto it = bs.begin(); it != bs.end(); ++it)
+            n += buffer_size(*it);
+        return n;
+    }
+
+    template<class ConstBufferSequence>
+    static
+    std::size_t
+    bsize2(ConstBufferSequence const& bs)
+    {
+        using boost::asio::buffer_size;
+        std::size_t n = 0;
+        for(auto it = bs.begin(); it != bs.end(); it++)
+            n += buffer_size(*it);
+        return n;
+    }
+
+    template<class ConstBufferSequence>
+    static
+    std::size_t
+    bsize3(ConstBufferSequence const& bs)
+    {
+        using boost::asio::buffer_size;
+        std::size_t n = 0;
+        for(auto it = bs.end(); it != bs.begin();)
+            n += buffer_size(*--it);
+        return n;
+    }
+
+    template<class ConstBufferSequence>
+    static
+    std::size_t
+    bsize4(ConstBufferSequence const& bs)
+    {
+        using boost::asio::buffer_size;
+        std::size_t n = 0;
+        for(auto it = bs.end(); it != bs.begin();)
+        {
+            it--;
+            n += buffer_size(*it);
+        }
+        return n;
+    }
+
+    template<class ConstBufferSequence>
+    static
+    std::string
+    to_string(ConstBufferSequence const& bs)
+    {
+        using boost::asio::buffer_cast;
+        using boost::asio::buffer_size;
+        std::string s;
+        s.reserve(buffer_size(bs));
+        for(boost::asio::const_buffer b : bs)
+            s.append(buffer_cast<char const*>(b),
+                buffer_size(b));
+        return s;
+    }
+
+    template<class BufferType>
+    void testMatrix()
+    {
+        using boost::asio::buffer_size;
+        std::string s = "Hello, world";
+        BEAST_EXPECT(s.size() == 12);
+        for(std::size_t x = 1; x < 4; ++x) {
+        for(std::size_t y = 1; y < 4; ++y) {
+        std::size_t z = s.size() - (x + y);
+        {
+            std::array<BufferType, 3> bs{{
+                BufferType{&s[0], x},
+                BufferType{&s[x], y},
+                BufferType{&s[x+y], z}}};
+            for(std::size_t i = 0; i <= s.size() + 1; ++i)
+            {
+                auto pb = buffer_prefix(i, bs);
+                BEAST_EXPECT(to_string(pb) == s.substr(0, i));
+                auto pb2 = pb;
+                BEAST_EXPECT(to_string(pb2) == to_string(pb));
+                pb = buffer_prefix(0, bs);
+                pb2 = pb;
+                BEAST_EXPECT(buffer_size(pb2) == 0);
+                pb2 = buffer_prefix(i, bs);
+                BEAST_EXPECT(to_string(pb2) == s.substr(0, i));
+            }
+        }
+        }}
+    }
+
+    void testNullBuffers()
+    {
+        using boost::asio::buffer_copy;
+        using boost::asio::buffer_size;
+        using boost::asio::null_buffers;
+        auto pb0 = buffer_prefix(0, null_buffers{});
+        BEAST_EXPECT(buffer_size(pb0) == 0);
+        auto pb1 = buffer_prefix(1, null_buffers{});
+        BEAST_EXPECT(buffer_size(pb1) == 0);
+        BEAST_EXPECT(buffer_copy(pb0, pb1) == 0);
+
+        using pb_type = decltype(pb0);
+        consuming_buffers<pb_type> cb(pb0);
+        BEAST_EXPECT(buffer_size(cb) == 0);
+        BEAST_EXPECT(buffer_copy(cb, pb1) == 0);
+        cb.consume(1);
+        BEAST_EXPECT(buffer_size(cb) == 0);
+        BEAST_EXPECT(buffer_copy(cb, pb1) == 0);
+
+        auto pbc = buffer_prefix(2, cb);
+        BEAST_EXPECT(buffer_size(pbc) == 0);
+        BEAST_EXPECT(buffer_copy(pbc, cb) == 0);
+    }
+
+    void testIterator()
+    {
+        using boost::asio::buffer_size;
+        using boost::asio::const_buffer;
+        char b[3];
+        std::array<const_buffer, 3> bs{{
+            const_buffer{&b[0], 1},
+            const_buffer{&b[1], 1},
+            const_buffer{&b[2], 1}}};
+        auto pb = buffer_prefix(2, bs);
+        BEAST_EXPECT(bsize1(pb) == 2);
+        BEAST_EXPECT(bsize2(pb) == 2);
+        BEAST_EXPECT(bsize3(pb) == 2);
+        BEAST_EXPECT(bsize4(pb) == 2);
+    }
+
+    void run() override
+    {
+        testMatrix<boost::asio::const_buffer>();
+        testMatrix<boost::asio::mutable_buffer>();
+        testNullBuffers();
+        testIterator();
+    }
+};
+
+BOOST_BEAST_DEFINE_TESTSUITE(buffer_prefix,core,beast);
+
+} // beast
+} // boost