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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2024
//
// 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/tests.h"
#include "td/utils/buffer.h"
#include "td/utils/Random.h"
TEST(Buffer, buffer_builder) {
{
td::BufferBuilder builder;
builder.append("b");
builder.prepend("a");
builder.append("c");
ASSERT_EQ(builder.extract().as_slice(), "abc");
}
{
td::BufferBuilder builder{"hello", 0, 0};
ASSERT_EQ(builder.extract().as_slice(), "hello");
}
{
td::BufferBuilder builder{"hello", 1, 1};
builder.prepend("A ");
builder.append(" B");
ASSERT_EQ(builder.extract().as_slice(), "A hello B");
}
{
auto str = td::rand_string('a', 'z', 10000);
auto split_str = td::rand_split(str);
int l = td::Random::fast(0, static_cast<int>(split_str.size() - 1));
int r = l;
td::BufferBuilder builder(split_str[l], 123, 1000);
while (l != 0 || r != static_cast<int>(split_str.size()) - 1) {
if (l == 0 || (td::Random::fast_bool() && r != static_cast<int>(split_str.size() - 1))) {
r++;
if (td::Random::fast_bool()) {
builder.append(split_str[r]);
} else {
builder.append(td::BufferSlice(split_str[r]));
}
} else {
l--;
if (td::Random::fast_bool()) {
builder.prepend(split_str[l]);
} else {
builder.prepend(td::BufferSlice(split_str[l]));
}
}
}
ASSERT_EQ(builder.extract().as_slice(), str);
}
}
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