grpc 第三方依赖 就是grpc的 third_party 文件夹
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// Copyright 2017 The Abseil Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "absl/random/internal/randen.h"
#include <cstring>
#include "gtest/gtest.h"
#include "absl/meta/type_traits.h"
namespace {
using absl::random_internal::Randen;
// Local state parameters.
constexpr size_t kStateSizeT = Randen::kStateBytes / sizeof(uint64_t);
TEST(RandenTest, CopyAndMove) {
static_assert(std::is_copy_constructible<Randen>::value,
"Randen must be copy constructible");
static_assert(absl::is_copy_assignable<Randen>::value,
"Randen must be copy assignable");
static_assert(std::is_move_constructible<Randen>::value,
"Randen must be move constructible");
static_assert(absl::is_move_assignable<Randen>::value,
"Randen must be move assignable");
}
TEST(RandenTest, Default) {
constexpr uint64_t kGolden[] = {
0x6c6534090ee6d3ee, 0x044e2b9b9d5333c6, 0xc3c14f134e433977,
0xdda9f47cd90410ee, 0x887bf3087fd8ca10, 0xf0b780f545c72912,
0x15dbb1d37696599f, 0x30ec63baff3c6d59, 0xb29f73606f7f20a6,
0x02808a316f49a54c, 0x3b8feaf9d5c8e50e, 0x9cbf605e3fd9de8a,
0xc970ae1a78183bbb, 0xd8b2ffd356301ed5, 0xf4b327fe0fc73c37,
0xcdfd8d76eb8f9a19, 0xc3a506eb91420c9d, 0xd5af05dd3eff9556,
0x48db1bb78f83c4a1, 0x7023920e0d6bfe8c, 0x58d3575834956d42,
0xed1ef4c26b87b840, 0x8eef32a23e0b2df3, 0x497cabf3431154fc,
0x4e24370570029a8b, 0xd88b5749f090e5ea, 0xc651a582a970692f,
0x78fcec2cbb6342f5, 0x463cb745612f55db, 0x352ee4ad1816afe3,
0x026ff374c101da7e, 0x811ef0821c3de851,
};
alignas(16) uint64_t state[kStateSizeT];
std::memset(state, 0, sizeof(state));
Randen r;
r.Generate(state);
auto id = std::begin(state);
for (const auto& elem : kGolden) {
EXPECT_EQ(elem, *id++);
}
}
} // namespace