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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
//
// 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)
//
#include "td/utils/Slice.h"
#include "td/utils/StringBuilder.h"
#include "td/utils/tests.h"
#include "td/utils/Variant.h"
REGISTER_TESTS(variant);
using namespace td;
static const size_t BUF_SIZE = 1024 * 1024;
static char buf[BUF_SIZE], buf2[BUF_SIZE];
static StringBuilder sb(MutableSlice(buf, BUF_SIZE - 1));
static StringBuilder sb2(MutableSlice(buf2, BUF_SIZE - 1));
static std::string move_sb() {
auto res = sb.as_cslice().str();
sb.clear();
return res;
}
static std::string name(int id) {
if (id == 1) {
return "A";
}
if (id == 2) {
return "B";
}
if (id == 3) {
return "C";
}
return "";
}
template <int id>
class Class {
public:
Class() {
sb << "+" << name(id);
}
Class(const Class &) = delete;
Class &operator=(const Class &) = delete;
Class(Class &&) = delete;
Class &operator=(Class &&) = delete;
~Class() {
sb << "-" << name(id);
}
};
using A = Class<1>;
using B = Class<2>;
using C = Class<3>;
TEST(Variant, simple) {
{
Variant<std::unique_ptr<A>, std::unique_ptr<B>, std::unique_ptr<C>> abc;
ASSERT_STREQ("", sb.as_cslice());
abc = std::make_unique<A>();
ASSERT_STREQ("+A", sb.as_cslice());
sb.clear();
abc = std::make_unique<B>();
ASSERT_STREQ("+B-A", sb.as_cslice());
sb.clear();
abc = std::make_unique<C>();
ASSERT_STREQ("+C-B", sb.as_cslice());
sb.clear();
}
ASSERT_STREQ("-C", move_sb());
sb.clear();
};
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