Export of internal Abseil changes.
-- 7a6ff16a85beb730c172d5d25cf1b5e1be885c56 by Laramie Leavitt <lar@google.com>: Internal change. PiperOrigin-RevId: 254454546 -- ff8f9bafaefc26d451f576ea4a06d150aed63f6f by Andy Soffer <asoffer@google.com>: Internal changes PiperOrigin-RevId: 254451562 -- deefc5b651b479ce36f0b4ef203e119c0c8936f2 by CJ Johnson <johnsoncj@google.com>: Account for subtracting unsigned values from the size of InlinedVector PiperOrigin-RevId: 254450625 -- 3c677316a27bcadc17e41957c809ca472d5fef14 by Andy Soffer <asoffer@google.com>: Add C++17's std::make_from_tuple to absl/utility/utility.h PiperOrigin-RevId: 254411573 -- 4ee3536a918830eeec402a28fc31a62c7c90b940 by CJ Johnson <johnsoncj@google.com>: Adds benchmark for the rest of the InlinedVector public API PiperOrigin-RevId: 254408378 -- e5a21a00700ee83498ff1efbf649169756463ee4 by CJ Johnson <johnsoncj@google.com>: Updates the definition of InlinedVector::shrink_to_fit() to be exception safe and adds exception safety tests for it. PiperOrigin-RevId: 254401387 -- 2ea82e72b86d82d78b4e4712a63a55981b53c64b by Laramie Leavitt <lar@google.com>: Use absl::InsecureBitGen in place of std::mt19937 in tests absl/random/...distribution_test.cc PiperOrigin-RevId: 254289444 -- fa099e02c413a7ffda732415e8105cad26a90337 by Andy Soffer <asoffer@google.com>: Internal changes PiperOrigin-RevId: 254286334 -- ce34b7f36933b30cfa35b9c9a5697a792b5666e4 by Andy Soffer <asoffer@google.com>: Internal changes PiperOrigin-RevId: 254273059 -- 6f9c473da7c2090c2e85a37c5f00622e8a912a89 by Jorg Brown <jorg@google.com>: Change absl::container_internal::CompressedTuple to instantiate its internal Storage class with the name of the type it's holding, rather than the name of the Tuple. This is not an externally-visible change, other than less compiler memory is used and less debug information is generated. PiperOrigin-RevId: 254269285 -- 8bd3c186bf2fc0c55d8a2dd6f28a5327502c9fba by Andy Soffer <asoffer@google.com>: Adding short-hand IntervalClosed for IntervalClosedClosed and IntervalOpen for IntervalOpenOpen. PiperOrigin-RevId: 254252419 -- ea957f99b6a04fccd42aa05605605f3b44b1ecfd by Abseil Team <absl-team@google.com>: Do not directly use __SIZEOF_INT128__. In order to avoid linker errors when building with clang-cl (__fixunsdfti, __udivti3 and __fixunssfti are undefined), this CL uses ABSL_HAVE_INTRINSIC_INT128 which is not defined for clang-cl. PiperOrigin-RevId: 254250739 -- 89ab385cd26b34d64130bce856253aaba96d2345 by Andy Soffer <asoffer@google.com>: Internal changes PiperOrigin-RevId: 254242321 -- cffc793d93eca6d6bdf7de733847b6ab4a255ae9 by CJ Johnson <johnsoncj@google.com>: Adds benchmark for InlinedVector::reserve(size_type) PiperOrigin-RevId: 254199226 -- c90c7a9fa3c8f0c9d5114036979548b055ea2f2a by Gennadiy Rozental <rogeeff@google.com>: Import of CCTZ from GitHub. PiperOrigin-RevId: 254072387 -- c4c388beae016c9570ab54ffa1d52660e4a85b7b by Laramie Leavitt <lar@google.com>: Internal cleanup. PiperOrigin-RevId: 254062381 -- d3c992e221cc74e5372d0c8fa410170b6a43c062 by Tom Manshreck <shreck@google.com>: Update distributions.h to Abseil standards PiperOrigin-RevId: 254054946 -- d15ad0035c34ef11b14fadc5a4a2d3ec415f5518 by CJ Johnson <johnsoncj@google.com>: Removes functions with only one caller from the implementation details of InlinedVector by manually inlining the definitions PiperOrigin-RevId: 254005427 -- 2f37e807efc3a8ef1f4b539bdd379917d4151520 by Andy Soffer <asoffer@google.com>: Initial release of Abseil Random PiperOrigin-RevId: 253999861 -- 24ed1694b6430791d781ed533a8f8ccf6cac5856 by CJ Johnson <johnsoncj@google.com>: Updates the definition of InlinedVector::assign(...)/InlinedVector::operator=(...) to new, exception-safe implementations with exception safety tests to boot PiperOrigin-RevId: 253993691 -- 5613d95f5a7e34a535cfaeadce801441e990843e by CJ Johnson <johnsoncj@google.com>: Adds benchmarks for InlinedVector::shrink_to_fit() PiperOrigin-RevId: 253989647 -- 2a96ddfdac40bbb8cb6a7f1aeab90917067c6e63 by Abseil Team <absl-team@google.com>: Initial release of Abseil Random PiperOrigin-RevId: 253927497 -- bf1aff8fc9ffa921ad74643e9525ecf25b0d8dc1 by Andy Soffer <asoffer@google.com>: Initial release of Abseil Random PiperOrigin-RevId: 253920512 -- bfc03f4a3dcda3cf3a4b84bdb84cda24e3394f41 by Laramie Leavitt <lar@google.com>: Internal change. PiperOrigin-RevId: 253886486 -- 05036cfcc078ca7c5f581a00dfb0daed568cbb69 by Eric Fiselier <ericwf@google.com>: Don't include `winsock2.h` because it drags in `windows.h` and friends, and they define awful macros like OPAQUE, ERROR, and more. This has the potential to break abseil users. Instead we only forward declare `timeval` and require Windows users include `winsock2.h` themselves. This is both inconsistent and poor QoI, but so including 'windows.h' is bad too. PiperOrigin-RevId: 253852615 GitOrigin-RevId: 7a6ff16a85beb730c172d5d25cf1b5e1be885c56 Change-Id: Icd6aff87da26f29ec8915da856f051129987cef6
This commit is contained in:
Abseil Team
Gennadiy Rozental
parent
43ef2148c0
commit
e9324d926a
120 changed files with 22842 additions and 340 deletions
244
absl/random/internal/nonsecure_base_test.cc
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absl/random/internal/nonsecure_base_test.cc
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// Copyright 2017 The Abseil Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "absl/random/internal/nonsecure_base.h"
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#include <algorithm>
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#include <iostream>
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#include <memory>
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#include <random>
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#include <sstream>
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#include "gtest/gtest.h"
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#include "absl/random/distributions.h"
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#include "absl/random/random.h"
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#include "absl/strings/str_cat.h"
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namespace {
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using ExampleNonsecureURBG =
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absl::random_internal::NonsecureURBGBase<std::mt19937>;
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template <typename T>
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void Use(const T&) {}
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} // namespace
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TEST(NonsecureURBGBase, DefaultConstructorIsValid) {
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ExampleNonsecureURBG urbg;
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}
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// Ensure that the recommended template-instantiations are valid.
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TEST(RecommendedTemplates, CanBeConstructed) {
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absl::BitGen default_generator;
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absl::InsecureBitGen insecure_generator;
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}
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TEST(RecommendedTemplates, CanDiscardValues) {
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absl::BitGen default_generator;
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absl::InsecureBitGen insecure_generator;
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default_generator.discard(5);
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insecure_generator.discard(5);
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}
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TEST(NonsecureURBGBase, StandardInterface) {
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// Names after definition of [rand.req.urbg] in C++ standard.
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// e us a value of E
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// v is a lvalue of E
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// x, y are possibly const values of E
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// s is a value of T
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// q is a value satisfying requirements of seed_sequence
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// z is a value of type unsigned long long
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// os is a some specialization of basic_ostream
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// is is a some specialization of basic_istream
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using E = absl::random_internal::NonsecureURBGBase<std::minstd_rand>;
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using T = typename E::result_type;
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static_assert(!std::is_copy_constructible<E>::value,
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"NonsecureURBGBase should not be copy constructible");
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static_assert(!absl::is_copy_assignable<E>::value,
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"NonsecureURBGBase should not be copy assignable");
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static_assert(std::is_move_constructible<E>::value,
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"NonsecureURBGBase should be move constructible");
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static_assert(absl::is_move_assignable<E>::value,
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"NonsecureURBGBase should be move assignable");
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static_assert(std::is_same<decltype(std::declval<E>()()), T>::value,
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"return type of operator() must be result_type");
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{
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const E x, y;
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Use(x);
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Use(y);
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static_assert(std::is_same<decltype(x == y), bool>::value,
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"return type of operator== must be bool");
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static_assert(std::is_same<decltype(x != y), bool>::value,
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"return type of operator== must be bool");
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}
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E e;
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std::seed_seq q{1, 2, 3};
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E{};
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E{q};
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// Copy constructor not supported.
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// E{x};
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// result_type seed constructor not supported.
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// E{T{1}};
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// Move constructors are supported.
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{
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E tmp(q);
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E m = std::move(tmp);
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E n(std::move(m));
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EXPECT_TRUE(e != n);
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}
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// Comparisons work.
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{
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// MSVC emits error 2718 when using EXPECT_EQ(e, x)
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// * actual parameter with __declspec(align('#')) won't be aligned
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E a(q);
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E b(q);
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EXPECT_TRUE(a != e);
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EXPECT_TRUE(a == b);
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a();
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EXPECT_TRUE(a != b);
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}
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// e.seed(s) not supported.
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// [rand.req.eng] specifies the parameter as 'unsigned long long'
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// e.discard(unsigned long long) is supported.
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unsigned long long z = 1; // NOLINT(runtime/int)
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e.discard(z);
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}
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TEST(NonsecureURBGBase, SeedSeqConstructorIsValid) {
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std::seed_seq seq;
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ExampleNonsecureURBG rbg(seq);
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}
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TEST(NonsecureURBGBase, CompatibleWithDistributionUtils) {
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ExampleNonsecureURBG rbg;
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absl::Uniform(rbg, 0, 100);
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absl::Uniform(rbg, 0.5, 0.7);
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absl::Poisson<uint32_t>(rbg);
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absl::Exponential<float>(rbg);
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}
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TEST(NonsecureURBGBase, CompatibleWithStdDistributions) {
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ExampleNonsecureURBG rbg;
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std::uniform_int_distribution<uint32_t>(0, 100)(rbg);
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std::uniform_real_distribution<float>()(rbg);
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std::bernoulli_distribution(0.2)(rbg);
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}
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TEST(NonsecureURBGBase, ConsecutiveDefaultInstancesYieldUniqueVariates) {
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const size_t kNumSamples = 128;
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ExampleNonsecureURBG rbg1;
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ExampleNonsecureURBG rbg2;
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for (size_t i = 0; i < kNumSamples; i++) {
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EXPECT_NE(rbg1(), rbg2());
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}
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}
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TEST(NonsecureURBGBase, EqualSeedSequencesYieldEqualVariates) {
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std::seed_seq seq;
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ExampleNonsecureURBG rbg1(seq);
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ExampleNonsecureURBG rbg2(seq);
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// ExampleNonsecureURBG rbg3({1, 2, 3}); // Should not compile.
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for (uint32_t i = 0; i < 1000; i++) {
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EXPECT_EQ(rbg1(), rbg2());
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}
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rbg1.discard(100);
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rbg2.discard(100);
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// The sequences should continue after discarding
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for (uint32_t i = 0; i < 1000; i++) {
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EXPECT_EQ(rbg1(), rbg2());
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}
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}
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// This is a PRNG-compatible type specifically designed to test
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// that NonsecureURBGBase::Seeder can correctly handle iterators
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// to arbitrary non-uint32_t size types.
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template <typename T>
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struct SeederTestEngine {
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using result_type = T;
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static constexpr result_type(min)() {
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return (std::numeric_limits<result_type>::min)();
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}
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static constexpr result_type(max)() {
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return (std::numeric_limits<result_type>::max)();
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}
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template <class SeedSequence,
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typename = typename absl::enable_if_t<
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!std::is_same<SeedSequence, SeederTestEngine>::value>>
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explicit SeederTestEngine(SeedSequence&& seq) {
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seed(seq);
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}
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SeederTestEngine(const SeederTestEngine&) = default;
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SeederTestEngine& operator=(const SeederTestEngine&) = default;
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SeederTestEngine(SeederTestEngine&&) = default;
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SeederTestEngine& operator=(SeederTestEngine&&) = default;
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result_type operator()() { return state[0]; }
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template <class SeedSequence>
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void seed(SeedSequence&& seq) {
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std::fill(std::begin(state), std::end(state), T(0));
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seq.generate(std::begin(state), std::end(state));
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}
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T state[2];
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};
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TEST(NonsecureURBGBase, SeederWorksForU32) {
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using U32 =
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absl::random_internal::NonsecureURBGBase<SeederTestEngine<uint32_t>>;
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U32 x;
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EXPECT_NE(0, x());
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}
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TEST(NonsecureURBGBase, SeederWorksForU64) {
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using U64 =
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absl::random_internal::NonsecureURBGBase<SeederTestEngine<uint64_t>>;
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U64 x;
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EXPECT_NE(0, x());
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}
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