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416 lines
11 KiB
C++
416 lines
11 KiB
C++
//
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// Copyright (c) 2013-2016 Vinnie Falco (vinnie dot falco at gmail dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// Test that header file is self-contained.
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#include <beast/core/basic_streambuf.hpp>
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#include <beast/core/streambuf.hpp>
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#include <beast/core/to_string.hpp>
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#include <beast/unit_test/suite.hpp>
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#include <boost/asio/buffer.hpp>
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#include <algorithm>
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#include <atomic>
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#include <memory>
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#include <string>
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namespace beast {
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struct test_allocator_info
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{
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std::size_t ncopy = 0;
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std::size_t nmove = 0;
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std::size_t nselect = 0;
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};
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template<class T,
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bool Assign, bool Move, bool Swap, bool Select>
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class test_allocator;
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template<class T,
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bool Assign, bool Move, bool Swap, bool Select>
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struct test_allocator_base
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{
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};
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template<class T,
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bool Assign, bool Move, bool Swap>
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struct test_allocator_base<T, Assign, Move, Swap, true>
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{
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static
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test_allocator<T, Assign, Move, Swap, true>
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select_on_container_copy_construction(
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test_allocator<T, Assign, Move, Swap, true> const& a)
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{
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return test_allocator<T, Assign, Move, Swap, true>{};
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}
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};
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template<class T,
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bool Assign, bool Move, bool Swap, bool Select>
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class test_allocator : public test_allocator_base<
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T, Assign, Move, Swap, Select>
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{
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std::size_t id_;
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std::shared_ptr<test_allocator_info> info_;
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template<class, bool, bool, bool, bool>
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friend class test_allocator;
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public:
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using value_type = T;
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using propagate_on_container_copy_assignment =
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std::integral_constant<bool, Assign>;
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using propagate_on_container_move_assignment =
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std::integral_constant<bool, Move>;
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using propagate_on_container_swap =
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std::integral_constant<bool, Swap>;
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template<class U>
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struct rebind
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{
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using other = test_allocator<
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U, Assign, Move, Swap, Select>;
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};
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test_allocator()
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: id_([]
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{
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static std::atomic<
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std::size_t> sid(0);
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return ++sid;
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}())
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, info_(std::make_shared<test_allocator_info>())
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{
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}
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test_allocator(test_allocator const& u) noexcept
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: id_(u.id_)
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, info_(u.info_)
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{
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++info_->ncopy;
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}
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template<class U>
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test_allocator(test_allocator<
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U, Assign, Move, Swap, Select> const& u) noexcept
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: id_(u.id_)
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, info_(u.info_)
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{
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++info_->ncopy;
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}
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test_allocator(test_allocator&& t)
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: id_(t.id_)
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, info_(t.info_)
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{
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++info_->nmove;
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}
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value_type*
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allocate(std::size_t n)
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{
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return static_cast<value_type*>(
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::operator new (n*sizeof(value_type)));
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}
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void
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deallocate(value_type* p, std::size_t) noexcept
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{
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::operator delete(p);
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}
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std::size_t
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id() const
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{
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return id_;
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}
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test_allocator_info const*
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operator->() const
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{
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return info_.get();
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}
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};
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class basic_streambuf_test : public beast::unit_test::suite
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{
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public:
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template<class Alloc1, class Alloc2>
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static
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bool
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eq(basic_streambuf<Alloc1> const& sb1,
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basic_streambuf<Alloc2> const& sb2)
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{
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return to_string(sb1.data()) == to_string(sb2.data());
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}
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void testSpecialMembers()
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{
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using boost::asio::buffer;
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using boost::asio::buffer_cast;
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using boost::asio::buffer_size;
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std::string const s = "Hello, world";
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expect(s.size() == 12);
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for(std::size_t i = 1; i < 12; ++i) {
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for(std::size_t x = 1; x < 4; ++x) {
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for(std::size_t y = 1; y < 4; ++y) {
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std::size_t z = s.size() - (x + y);
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{
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streambuf sb(i);
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sb.commit(buffer_copy(sb.prepare(x), buffer(s.data(), x)));
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sb.commit(buffer_copy(sb.prepare(y), buffer(s.data()+x, y)));
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sb.commit(buffer_copy(sb.prepare(z), buffer(s.data()+x+y, z)));
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expect(to_string(sb.data()) == s);
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{
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streambuf sb2(sb);
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expect(eq(sb, sb2));
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}
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{
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streambuf sb2;
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sb2 = sb;
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expect(eq(sb, sb2));
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}
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{
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streambuf sb2(std::move(sb));
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expect(to_string(sb2.data()) == s);
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expect(buffer_size(sb.data()) == 0);
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sb = std::move(sb2);
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expect(to_string(sb.data()) == s);
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expect(buffer_size(sb2.data()) == 0);
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}
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sb = sb;
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sb = std::move(sb);
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}
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}}}
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}
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void testAllocator()
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{
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{
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using alloc_type =
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test_allocator<char, false, false, false, false>;
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using sb_type = basic_streambuf<alloc_type>;
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sb_type sb;
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expect(sb.get_allocator().id() == 1);
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}
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{
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using alloc_type =
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test_allocator<char, false, false, false, false>;
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using sb_type = basic_streambuf<alloc_type>;
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sb_type sb;
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expect(sb.get_allocator().id() == 2);
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sb_type sb2(sb);
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expect(sb2.get_allocator().id() == 2);
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sb_type sb3(sb, alloc_type{});
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//expect(sb3.get_allocator().id() == 3);
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}
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}
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void
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testPrepare()
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{
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using boost::asio::buffer_size;
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{
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streambuf sb(2);
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expect(buffer_size(sb.prepare(5)) == 5);
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expect(buffer_size(sb.prepare(8)) == 8);
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expect(buffer_size(sb.prepare(7)) == 7);
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}
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{
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streambuf sb(2);
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sb.prepare(2);
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{
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auto const bs = sb.prepare(5);
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expect(std::distance(
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bs.begin(), bs.end()) == 2);
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}
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{
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auto const bs = sb.prepare(8);
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expect(std::distance(
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bs.begin(), bs.end()) == 3);
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}
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{
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auto const bs = sb.prepare(4);
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expect(std::distance(
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bs.begin(), bs.end()) == 2);
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}
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}
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}
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void testCommit()
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{
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using boost::asio::buffer_size;
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streambuf sb(2);
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sb.prepare(2);
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sb.prepare(5);
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sb.commit(1);
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expect(buffer_size(sb.data()) == 1);
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}
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void testStreambuf()
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{
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using boost::asio::buffer;
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using boost::asio::buffer_cast;
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using boost::asio::buffer_size;
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std::string const s = "Hello, world";
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expect(s.size() == 12);
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for(std::size_t i = 1; i < 12; ++i) {
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for(std::size_t x = 1; x < 4; ++x) {
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for(std::size_t y = 1; y < 4; ++y) {
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for(std::size_t t = 1; t < 4; ++ t) {
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for(std::size_t u = 1; u < 4; ++ u) {
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std::size_t z = s.size() - (x + y);
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std::size_t v = s.size() - (t + u);
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{
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streambuf sb(i);
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{
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auto d = sb.prepare(z);
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expect(buffer_size(d) == z);
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}
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{
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auto d = sb.prepare(0);
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expect(buffer_size(d) == 0);
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}
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{
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auto d = sb.prepare(y);
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expect(buffer_size(d) == y);
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}
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{
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auto d = sb.prepare(x);
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expect(buffer_size(d) == x);
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sb.commit(buffer_copy(d, buffer(s.data(), x)));
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}
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expect(sb.size() == x);
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expect(buffer_size(sb.data()) == sb.size());
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{
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auto d = sb.prepare(x);
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expect(buffer_size(d) == x);
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}
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{
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auto d = sb.prepare(0);
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expect(buffer_size(d) == 0);
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}
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{
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auto d = sb.prepare(z);
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expect(buffer_size(d) == z);
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}
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{
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auto d = sb.prepare(y);
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expect(buffer_size(d) == y);
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sb.commit(buffer_copy(d, buffer(s.data()+x, y)));
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}
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sb.commit(1);
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expect(sb.size() == x + y);
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expect(buffer_size(sb.data()) == sb.size());
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{
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auto d = sb.prepare(x);
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expect(buffer_size(d) == x);
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}
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{
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auto d = sb.prepare(y);
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expect(buffer_size(d) == y);
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}
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{
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auto d = sb.prepare(0);
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expect(buffer_size(d) == 0);
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}
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{
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auto d = sb.prepare(z);
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expect(buffer_size(d) == z);
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sb.commit(buffer_copy(d, buffer(s.data()+x+y, z)));
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}
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sb.commit(2);
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expect(sb.size() == x + y + z);
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expect(buffer_size(sb.data()) == sb.size());
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expect(to_string(sb.data()) == s);
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sb.consume(t);
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{
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auto d = sb.prepare(0);
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expect(buffer_size(d) == 0);
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}
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expect(to_string(sb.data()) == s.substr(t, std::string::npos));
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sb.consume(u);
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expect(to_string(sb.data()) == s.substr(t + u, std::string::npos));
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sb.consume(v);
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expect(to_string(sb.data()) == "");
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sb.consume(1);
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{
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auto d = sb.prepare(0);
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expect(buffer_size(d) == 0);
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}
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}
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}}}}}
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}
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void testIterators()
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{
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using boost::asio::buffer_size;
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streambuf sb(1);
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sb.prepare(1);
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sb.commit(1);
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sb.prepare(2);
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sb.commit(2);
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expect(buffer_size(sb.data()) == 3);
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sb.prepare(1);
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expect(buffer_size(sb.prepare(3)) == 3);
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expect(read_size_helper(sb, 3) == 3);
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sb.commit(2);
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try
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{
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streambuf sb0(0);
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fail();
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}
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catch(std::exception const&)
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{
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pass();
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}
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std::size_t n;
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n = 0;
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for(auto it = sb.data().begin();
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it != sb.data().end(); it++)
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++n;
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expect(n == 4);
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n = 0;
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for(auto it = sb.data().begin();
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it != sb.data().end(); ++it)
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++n;
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expect(n == 4);
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n = 0;
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for(auto it = sb.data().end();
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it != sb.data().begin(); it--)
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++n;
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expect(n == 4);
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n = 0;
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for(auto it = sb.data().end();
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it != sb.data().begin(); --it)
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++n;
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expect(n == 4);
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}
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void testOutputStream()
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{
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streambuf sb;
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sb << "x";
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expect(to_string(sb.data()) == "x");
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}
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void run() override
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{
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testSpecialMembers();
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testAllocator();
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testPrepare();
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testCommit();
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testStreambuf();
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testIterators();
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testOutputStream();
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}
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};
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BEAST_DEFINE_TESTSUITE(basic_streambuf,core,beast);
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} // beast
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