74 lines
1.6 KiB
C++
74 lines
1.6 KiB
C++
//
|
|
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2019
|
|
//
|
|
// 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);
|
|
|
|
static const size_t BUF_SIZE = 1024 * 1024;
|
|
static char buf[BUF_SIZE], buf2[BUF_SIZE];
|
|
static td::StringBuilder sb(td::MutableSlice(buf, BUF_SIZE - 1));
|
|
static td::StringBuilder sb2(td::MutableSlice(buf2, BUF_SIZE - 1));
|
|
|
|
static td::string move_sb() {
|
|
auto res = sb.as_cslice().str();
|
|
sb.clear();
|
|
return res;
|
|
}
|
|
|
|
static td::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) {
|
|
{
|
|
td::Variant<td::unique_ptr<A>, td::unique_ptr<B>, td::unique_ptr<C>> abc;
|
|
ASSERT_STREQ("", sb.as_cslice());
|
|
abc = td::make_unique<A>();
|
|
ASSERT_STREQ("+A", sb.as_cslice());
|
|
sb.clear();
|
|
abc = td::make_unique<B>();
|
|
ASSERT_STREQ("+B-A", sb.as_cslice());
|
|
sb.clear();
|
|
abc = td::make_unique<C>();
|
|
ASSERT_STREQ("+C-B", sb.as_cslice());
|
|
sb.clear();
|
|
}
|
|
ASSERT_STREQ("-C", move_sb());
|
|
sb.clear();
|
|
};
|