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Diffstat (limited to 'third_party/abseil_cpp/absl/random/internal/salted_seed_seq_test.cc')
-rw-r--r-- | third_party/abseil_cpp/absl/random/internal/salted_seed_seq_test.cc | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/third_party/abseil_cpp/absl/random/internal/salted_seed_seq_test.cc b/third_party/abseil_cpp/absl/random/internal/salted_seed_seq_test.cc deleted file mode 100644 index 0bf19a63ef8c..000000000000 --- a/third_party/abseil_cpp/absl/random/internal/salted_seed_seq_test.cc +++ /dev/null @@ -1,168 +0,0 @@ -// 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/salted_seed_seq.h" - -#include <iterator> -#include <random> -#include <utility> -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" - -using absl::random_internal::GetSaltMaterial; -using absl::random_internal::MakeSaltedSeedSeq; -using absl::random_internal::SaltedSeedSeq; -using testing::Eq; -using testing::Pointwise; - -namespace { - -template <typename Sseq> -void ConformsToInterface() { - // Check that the SeedSequence can be default-constructed. - { Sseq default_constructed_seq; } - // Check that the SeedSequence can be constructed with two iterators. - { - uint32_t init_array[] = {1, 3, 5, 7, 9}; - Sseq iterator_constructed_seq(std::begin(init_array), std::end(init_array)); - } - // Check that the SeedSequence can be std::initializer_list-constructed. - { Sseq list_constructed_seq = {1, 3, 5, 7, 9, 11, 13}; } - // Check that param() and size() return state provided to constructor. - { - uint32_t init_array[] = {1, 2, 3, 4, 5}; - Sseq seq(std::begin(init_array), std::end(init_array)); - EXPECT_EQ(seq.size(), ABSL_ARRAYSIZE(init_array)); - - std::vector<uint32_t> state_vector; - seq.param(std::back_inserter(state_vector)); - - EXPECT_EQ(state_vector.size(), ABSL_ARRAYSIZE(init_array)); - for (int i = 0; i < state_vector.size(); i++) { - EXPECT_EQ(state_vector[i], i + 1); - } - } - // Check for presence of generate() method. - { - Sseq seq; - uint32_t seeds[5]; - - seq.generate(std::begin(seeds), std::end(seeds)); - } -} - -TEST(SaltedSeedSeq, CheckInterfaces) { - // Control case - ConformsToInterface<std::seed_seq>(); - - // Abseil classes - ConformsToInterface<SaltedSeedSeq<std::seed_seq>>(); -} - -TEST(SaltedSeedSeq, CheckConstructingFromOtherSequence) { - std::vector<uint32_t> seed_values(10, 1); - std::seed_seq seq(seed_values.begin(), seed_values.end()); - auto salted_seq = MakeSaltedSeedSeq(std::move(seq)); - - EXPECT_EQ(seq.size(), salted_seq.size()); - - std::vector<uint32_t> param_result; - seq.param(std::back_inserter(param_result)); - - EXPECT_EQ(seed_values, param_result); -} - -TEST(SaltedSeedSeq, SaltedSaltedSeedSeqIsNotDoubleSalted) { - uint32_t init[] = {1, 3, 5, 7, 9}; - - std::seed_seq seq(std::begin(init), std::end(init)); - - // The first salting. - SaltedSeedSeq<std::seed_seq> salted_seq = MakeSaltedSeedSeq(std::move(seq)); - uint32_t a[16]; - salted_seq.generate(std::begin(a), std::end(a)); - - // The second salting. - SaltedSeedSeq<std::seed_seq> salted_salted_seq = - MakeSaltedSeedSeq(std::move(salted_seq)); - uint32_t b[16]; - salted_salted_seq.generate(std::begin(b), std::end(b)); - - // ... both should be equal. - EXPECT_THAT(b, Pointwise(Eq(), a)) << "a[0] " << a[0]; -} - -TEST(SaltedSeedSeq, SeedMaterialIsSalted) { - const size_t kNumBlocks = 16; - - uint32_t seed_material[kNumBlocks]; - std::random_device urandom{"/dev/urandom"}; - for (uint32_t& seed : seed_material) { - seed = urandom(); - } - - std::seed_seq seq(std::begin(seed_material), std::end(seed_material)); - SaltedSeedSeq<std::seed_seq> salted_seq(std::begin(seed_material), - std::end(seed_material)); - - bool salt_is_available = GetSaltMaterial().has_value(); - - // If salt is available generated sequence should be different. - if (salt_is_available) { - uint32_t outputs[kNumBlocks]; - uint32_t salted_outputs[kNumBlocks]; - - seq.generate(std::begin(outputs), std::end(outputs)); - salted_seq.generate(std::begin(salted_outputs), std::end(salted_outputs)); - - EXPECT_THAT(outputs, Pointwise(testing::Ne(), salted_outputs)); - } -} - -TEST(SaltedSeedSeq, GenerateAcceptsDifferentTypes) { - const size_t kNumBlocks = 4; - - SaltedSeedSeq<std::seed_seq> seq({1, 2, 3}); - - uint32_t expected[kNumBlocks]; - seq.generate(std::begin(expected), std::end(expected)); - - // 32-bit outputs - { - unsigned long seed_material[kNumBlocks]; // NOLINT(runtime/int) - seq.generate(std::begin(seed_material), std::end(seed_material)); - EXPECT_THAT(seed_material, Pointwise(Eq(), expected)); - } - { - unsigned int seed_material[kNumBlocks]; // NOLINT(runtime/int) - seq.generate(std::begin(seed_material), std::end(seed_material)); - EXPECT_THAT(seed_material, Pointwise(Eq(), expected)); - } - - // 64-bit outputs. - { - uint64_t seed_material[kNumBlocks]; - seq.generate(std::begin(seed_material), std::end(seed_material)); - EXPECT_THAT(seed_material, Pointwise(Eq(), expected)); - } - { - int64_t seed_material[kNumBlocks]; - seq.generate(std::begin(seed_material), std::end(seed_material)); - EXPECT_THAT(seed_material, Pointwise(Eq(), expected)); - } -} - -} // namespace |