1 files changed, 0 insertions, 202 deletions
diff --git a/third_party/abseil_cpp/absl/random/internal/seed_material_test.cc b/third_party/abseil_cpp/absl/random/internal/seed_material_test.cc
deleted file mode 100644
index 6db2820ec7..0000000000
--- a/third_party/abseil_cpp/absl/random/internal/seed_material_test.cc
+++ /dev/null
@@ -1,202 +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/seed_material.h"
-
-#include <bitset>
-#include <cstdlib>
-#include <cstring>
-#include <random>
-
-#include "gmock/gmock.h"
-#include "gtest/gtest.h"
-
-#ifdef __ANDROID__
-// Android assert messages only go to system log, so death tests cannot inspect
-// the message for matching.
-#define ABSL_EXPECT_DEATH_IF_SUPPORTED(statement, regex) \
-  EXPECT_DEATH_IF_SUPPORTED(statement, ".*")
-#else
-#define ABSL_EXPECT_DEATH_IF_SUPPORTED(statement, regex) \
-  EXPECT_DEATH_IF_SUPPORTED(statement, regex)
-#endif
-
-namespace {
-
-using testing::Each;
-using testing::ElementsAre;
-using testing::Eq;
-using testing::Ne;
-using testing::Pointwise;
-
-TEST(SeedBitsToBlocks, VerifyCases) {
-  EXPECT_EQ(0, absl::random_internal::SeedBitsToBlocks(0));
-  EXPECT_EQ(1, absl::random_internal::SeedBitsToBlocks(1));
-  EXPECT_EQ(1, absl::random_internal::SeedBitsToBlocks(31));
-  EXPECT_EQ(1, absl::random_internal::SeedBitsToBlocks(32));
-  EXPECT_EQ(2, absl::random_internal::SeedBitsToBlocks(33));
-  EXPECT_EQ(4, absl::random_internal::SeedBitsToBlocks(127));
-  EXPECT_EQ(4, absl::random_internal::SeedBitsToBlocks(128));
-  EXPECT_EQ(5, absl::random_internal::SeedBitsToBlocks(129));
-}
-
-TEST(ReadSeedMaterialFromOSEntropy, SuccessiveReadsAreDistinct) {
-  constexpr size_t kSeedMaterialSize = 64;
-  uint32_t seed_material_1[kSeedMaterialSize] = {};
-  uint32_t seed_material_2[kSeedMaterialSize] = {};
-
-  EXPECT_TRUE(absl::random_internal::ReadSeedMaterialFromOSEntropy(
-      absl::Span<uint32_t>(seed_material_1, kSeedMaterialSize)));
-  EXPECT_TRUE(absl::random_internal::ReadSeedMaterialFromOSEntropy(
-      absl::Span<uint32_t>(seed_material_2, kSeedMaterialSize)));
-
-  EXPECT_THAT(seed_material_1, Pointwise(Ne(), seed_material_2));
-}
-
-TEST(ReadSeedMaterialFromOSEntropy, ReadZeroBytesIsNoOp) {
-  uint32_t seed_material[32] = {};
-  std::memset(seed_material, 0xAA, sizeof(seed_material));
-  EXPECT_TRUE(absl::random_internal::ReadSeedMaterialFromOSEntropy(
-      absl::Span<uint32_t>(seed_material, 0)));
-
-  EXPECT_THAT(seed_material, Each(Eq(0xAAAAAAAA)));
-}
-
-TEST(ReadSeedMaterialFromOSEntropy, NullPtrVectorArgument) {
-#ifdef NDEBUG
-  EXPECT_FALSE(absl::random_internal::ReadSeedMaterialFromOSEntropy(
-      absl::Span<uint32_t>(nullptr, 32)));
-#else
-  bool result;
-  ABSL_EXPECT_DEATH_IF_SUPPORTED(
-      result = absl::random_internal::ReadSeedMaterialFromOSEntropy(
-          absl::Span<uint32_t>(nullptr, 32)),
-      "!= nullptr");
-  (void)result;  // suppress unused-variable warning
-#endif
-}
-
-TEST(ReadSeedMaterialFromURBG, SeedMaterialEqualsVariateSequence) {
-  // Two default-constructed instances of std::mt19937_64 are guaranteed to
-  // produce equal variate-sequences.
-  std::mt19937 urbg_1;
-  std::mt19937 urbg_2;
-  constexpr size_t kSeedMaterialSize = 1024;
-  uint32_t seed_material[kSeedMaterialSize] = {};
-
-  EXPECT_TRUE(absl::random_internal::ReadSeedMaterialFromURBG(
-      &urbg_1, absl::Span<uint32_t>(seed_material, kSeedMaterialSize)));
-  for (uint32_t seed : seed_material) {
-    EXPECT_EQ(seed, urbg_2());
-  }
-}
-
-TEST(ReadSeedMaterialFromURBG, ReadZeroBytesIsNoOp) {
-  std::mt19937_64 urbg;
-  uint32_t seed_material[32];
-  std::memset(seed_material, 0xAA, sizeof(seed_material));
-  EXPECT_TRUE(absl::random_internal::ReadSeedMaterialFromURBG(
-      &urbg, absl::Span<uint32_t>(seed_material, 0)));
-
-  EXPECT_THAT(seed_material, Each(Eq(0xAAAAAAAA)));
-}
-
-TEST(ReadSeedMaterialFromURBG, NullUrbgArgument) {
-  constexpr size_t kSeedMaterialSize = 32;
-  uint32_t seed_material[kSeedMaterialSize];
-#ifdef NDEBUG
-  EXPECT_FALSE(absl::random_internal::ReadSeedMaterialFromURBG<std::mt19937_64>(
-      nullptr, absl::Span<uint32_t>(seed_material, kSeedMaterialSize)));
-#else
-  bool result;
-  ABSL_EXPECT_DEATH_IF_SUPPORTED(
-      result = absl::random_internal::ReadSeedMaterialFromURBG<std::mt19937_64>(
-          nullptr, absl::Span<uint32_t>(seed_material, kSeedMaterialSize)),
-      "!= nullptr");
-  (void)result;  // suppress unused-variable warning
-#endif
-}
-
-TEST(ReadSeedMaterialFromURBG, NullPtrVectorArgument) {
-  std::mt19937_64 urbg;
-#ifdef NDEBUG
-  EXPECT_FALSE(absl::random_internal::ReadSeedMaterialFromURBG(
-      &urbg, absl::Span<uint32_t>(nullptr, 32)));
-#else
-  bool result;
-  ABSL_EXPECT_DEATH_IF_SUPPORTED(
-      result = absl::random_internal::ReadSeedMaterialFromURBG(
-          &urbg, absl::Span<uint32_t>(nullptr, 32)),
-      "!= nullptr");
-  (void)result;  // suppress unused-variable warning
-#endif
-}
-
-// The avalanche effect is a desirable cryptographic property of hashes in which
-// changing a single bit in the input causes each bit of the output to be
-// changed with probability near 50%.
-//
-// https://en.wikipedia.org/wiki/Avalanche_effect
-
-TEST(MixSequenceIntoSeedMaterial, AvalancheEffectTestOneBitLong) {
-  std::vector<uint32_t> seed_material = {1, 2, 3, 4, 5, 6, 7, 8};
-
-  // For every 32-bit number with exactly one bit set, verify the avalanche
-  // effect holds.  In order to reduce flakiness of tests, accept values
-  // anywhere in the range of 30%-70%.
-  for (uint32_t v = 1; v != 0; v <<= 1) {
-    std::vector<uint32_t> seed_material_copy = seed_material;
-    absl::random_internal::MixIntoSeedMaterial(
-        absl::Span<uint32_t>(&v, 1),
-        absl::Span<uint32_t>(seed_material_copy.data(),
-                             seed_material_copy.size()));
-
-    uint32_t changed_bits = 0;
-    for (size_t i = 0; i < seed_material.size(); i++) {
-      std::bitset<sizeof(uint32_t) * 8> bitset(seed_material[i] ^
-                                               seed_material_copy[i]);
-      changed_bits += bitset.count();
-    }
-
-    EXPECT_LE(changed_bits, 0.7 * sizeof(uint32_t) * 8 * seed_material.size());
-    EXPECT_GE(changed_bits, 0.3 * sizeof(uint32_t) * 8 * seed_material.size());
-  }
-}
-
-TEST(MixSequenceIntoSeedMaterial, AvalancheEffectTestOneBitShort) {
-  std::vector<uint32_t> seed_material = {1};
-
-  // For every 32-bit number with exactly one bit set, verify the avalanche
-  // effect holds.  In order to reduce flakiness of tests, accept values
-  // anywhere in the range of 30%-70%.
-  for (uint32_t v = 1; v != 0; v <<= 1) {
-    std::vector<uint32_t> seed_material_copy = seed_material;
-    absl::random_internal::MixIntoSeedMaterial(
-        absl::Span<uint32_t>(&v, 1),
-        absl::Span<uint32_t>(seed_material_copy.data(),
-                             seed_material_copy.size()));
-
-    uint32_t changed_bits = 0;
-    for (size_t i = 0; i < seed_material.size(); i++) {
-      std::bitset<sizeof(uint32_t) * 8> bitset(seed_material[i] ^
-                                               seed_material_copy[i]);
-      changed_bits += bitset.count();
-    }
-
-    EXPECT_LE(changed_bits, 0.7 * sizeof(uint32_t) * 8 * seed_material.size());
-    EXPECT_GE(changed_bits, 0.3 * sizeof(uint32_t) * 8 * seed_material.size());
-  }
-}
-
-}  // namespace