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//
// Copyright (c) 2016-2019 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/buffers_cat.hpp>
#include "test_buffer.hpp"
#include <boost/beast/_experimental/unit_test/suite.hpp>
#include <boost/beast/core/buffer_traits.hpp>
#include <boost/beast/core/buffers_prefix.hpp>
#include <boost/beast/core/buffers_suffix.hpp>
#include <boost/asio/buffer.hpp>
#include <boost/asio/streambuf.hpp>
#include <iterator>
#include <list>
#include <type_traits>
#include <vector>
namespace boost {
namespace beast {
class buffers_cat_test : public unit_test::suite
{
public:
void
testDefaultIterators()
{
// default ctor is one past the end
char c[2] = {};
auto bs = buffers_cat(
net::const_buffer(&c[0], 1),
net::const_buffer(&c[1], 1));
decltype(bs)::const_iterator it;
decltype(bs)::const_iterator it2;
BEAST_EXPECT(it == it2);
BEAST_EXPECT(it2 == it);
it = bs.end();
it2 = bs.end();
BEAST_EXPECT(it == it2);
BEAST_EXPECT(it2 == it);
decltype(bs)::const_iterator it3(it2);
BEAST_EXPECT(it3 == it2);
it = bs.begin();
BEAST_EXPECT(it != it3);
it = it3;
BEAST_EXPECT(it == it3);
// dereferencing default iterator should throw
try
{
it = {};
(void)*it;
fail();
}
catch(std::logic_error const&)
{
pass();
}
catch(...)
{
fail();
}
}
void
testBufferSequence()
{
string_view s = "Hello, world!";
net::const_buffer b1(s.data(), 6);
net::const_buffer b2(
s.data() + b1.size(), s.size() - b1.size());
test_buffer_sequence(buffers_cat(b1, b2));
}
template<class F>
void
checkException(F&& f)
{
try
{
f();
fail("missing exception", __FILE__, __LINE__);
}
catch(std::logic_error const&)
{
pass();
}
catch(...)
{
fail("wrong exception", __FILE__, __LINE__);
}
}
void
testExceptions()
{
net::const_buffer b1{"He", 2};
net::const_buffer b2{"llo,", 4};
net::const_buffer b3{" world!", 7};
auto const b = beast::buffers_cat(b1, b2, b3);
using type = decltype(b);
// Dereferencing a default-constructed iterator
checkException(
[]
{
(void)*(type::const_iterator{});
});
// Incrementing a default-constructed iterator
checkException(
[]
{
++(type::const_iterator{});
});
// Decrementing a default-constructed iterator
checkException(
[]
{
--(type::const_iterator{});
});
// Decrementing an iterator to the beginning
checkException(
[&b]
{
--b.begin();
});
// Dereferencing an iterator to the end
checkException(
[&b]
{
*b.end();
});
// Incrementing an iterator to the end
checkException(
[&b]
{
++b.end();
});
}
void
testEmpty()
{
struct empty_sequence
{
using value_type = net::const_buffer;
using const_iterator = value_type const*;
const_iterator
begin() const noexcept
{
return &v_;
}
const_iterator
end() const noexcept
{
return begin();
}
private:
value_type v_;
};
{
net::const_buffer b0{};
net::const_buffer b1{"He", 2};
net::const_buffer b2{"llo,", 4};
net::const_buffer b3{" world!", 7};
{
auto const b = beast::buffers_cat(b0, b0);
BEAST_EXPECT(buffer_bytes(b) == 0);
BEAST_EXPECT(buffers_length(b) == 0);
}
{
auto const b = beast::buffers_cat(b0, b0, b0, b0);
BEAST_EXPECT(buffer_bytes(b) == 0);
BEAST_EXPECT(buffers_length(b) == 0);
}
{
auto const b = beast::buffers_cat(b1, b2, b3);
BEAST_EXPECT(beast::buffers_to_string(b) == "Hello, world!");
BEAST_EXPECT(buffers_length(b) == 3);
test_buffer_sequence(b);
}
{
auto const b = beast::buffers_cat(b0, b1, b2, b3);
BEAST_EXPECT(beast::buffers_to_string(b) == "Hello, world!");
BEAST_EXPECT(buffers_length(b) == 3);
test_buffer_sequence(b);
}
{
auto const b = beast::buffers_cat(b1, b0, b2, b3);
BEAST_EXPECT(beast::buffers_to_string(b) == "Hello, world!");
BEAST_EXPECT(buffers_length(b) == 3);
test_buffer_sequence(b);
}
{
auto const b = beast::buffers_cat(b1, b2, b0, b3);
BEAST_EXPECT(beast::buffers_to_string(b) == "Hello, world!");
BEAST_EXPECT(buffers_length(b) == 3);
test_buffer_sequence(b);
}
{
auto const b = beast::buffers_cat(b1, b2, b3, b0);
BEAST_EXPECT(beast::buffers_to_string(b) == "Hello, world!");
BEAST_EXPECT(buffers_length(b) == 3);
test_buffer_sequence(b);
}
}
{
auto e1 = net::const_buffer{};
auto b1 = std::array<net::const_buffer, 3>{{
e1,
net::const_buffer{"He", 2},
net::const_buffer{"l", 1} }};
auto b2 = std::array<net::const_buffer, 3>{{
net::const_buffer{"lo", 2},
e1,
net::const_buffer{", ", 2} }};
auto b3 = std::array<net::const_buffer, 3>{{
net::const_buffer{"w", 1},
net::const_buffer{"orld!", 5},
e1 }};
{
auto const b = beast::buffers_cat(
e1, b1, e1, b2, e1, b3, e1);
BEAST_EXPECT(beast::buffers_to_string(b) == "Hello, world!");
BEAST_EXPECT(buffers_length(b) == 6);
}
}
{
auto e1 = net::const_buffer{};
auto e2 = empty_sequence{};
auto b1 = std::array<net::const_buffer, 3>{{
e1,
net::const_buffer{"He", 2},
net::const_buffer{"l", 1} }};
auto b2 = std::array<net::const_buffer, 3>{{
net::const_buffer{"lo", 2},
e1,
net::const_buffer{", ", 2} }};
auto b3 = std::array<net::const_buffer, 3>{{
net::const_buffer{"w", 1},
net::const_buffer{"orld!", 5},
e1 }};
{
auto const b = beast::buffers_cat(
e2, b1, e2, b2, e2, b3, e2);
BEAST_EXPECT(beast::buffers_to_string(b) == "Hello, world!");
BEAST_EXPECT(buffers_length(b) == 6);
}
}
}
void
testGccWarning1()
{
char out[64];
std::array<net::const_buffer, 2> buffers{
{net::buffer("Hello, "), net::buffer("world!")}};
std::size_t i = 3;
buffers_suffix<std::array<net::const_buffer, 2>> cb(buffers);
cb.consume(i);
net::buffer_copy(
net::buffer(out),
buffers_cat(cb, cb));
}
// VFALCO Some version of g++ incorrectly complain about
// uninitialized values when buffers_cat and
// buffers_prefix and/or buffers_suffix are used
// together.
void
testGccWarning2()
{
char out[64];
net::const_buffer buffers("Hello, world!", 13);
std::size_t i = 3;
buffers_suffix<net::const_buffer> cb{buffers};
cb.consume(i);
net::buffer_copy(
net::buffer(out),
buffers_cat(buffers_prefix(i, buffers), cb));
}
void
testSingleBuffer()
{
char c[1] = {};
auto b = net::const_buffer(c, 1);
auto bs = buffers_cat(net::const_buffer(c, 1));
auto first = net::buffer_sequence_begin(bs);
auto last = net::buffer_sequence_end(bs);
BOOST_ASSERT(first != last);
BEAST_EXPECT(std::distance(first, last) == 1);
net::const_buffer b2(*first);
BEAST_EXPECT(b.data() == b2.data());
BEAST_EXPECT(b.size() == b2.size());
}
void run() override
{
testDefaultIterators();
testBufferSequence();
testExceptions();
testEmpty();
testGccWarning1();
testGccWarning2();
testSingleBuffer();
}
};
BEAST_DEFINE_TESTSUITE(beast,core,buffers_cat);
} // beast
} // boost
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