From e9324d926a9189e222741fce6e676f0944661a72 Mon Sep 17 00:00:00 2001 From: Abseil Team Date: Fri, 21 Jun 2019 13:11:42 -0700 Subject: Export of internal Abseil changes. -- 7a6ff16a85beb730c172d5d25cf1b5e1be885c56 by Laramie Leavitt : Internal change. PiperOrigin-RevId: 254454546 -- ff8f9bafaefc26d451f576ea4a06d150aed63f6f by Andy Soffer : Internal changes PiperOrigin-RevId: 254451562 -- deefc5b651b479ce36f0b4ef203e119c0c8936f2 by CJ Johnson : Account for subtracting unsigned values from the size of InlinedVector PiperOrigin-RevId: 254450625 -- 3c677316a27bcadc17e41957c809ca472d5fef14 by Andy Soffer : Add C++17's std::make_from_tuple to absl/utility/utility.h PiperOrigin-RevId: 254411573 -- 4ee3536a918830eeec402a28fc31a62c7c90b940 by CJ Johnson : Adds benchmark for the rest of the InlinedVector public API PiperOrigin-RevId: 254408378 -- e5a21a00700ee83498ff1efbf649169756463ee4 by CJ Johnson : 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 : Use absl::InsecureBitGen in place of std::mt19937 in tests absl/random/...distribution_test.cc PiperOrigin-RevId: 254289444 -- fa099e02c413a7ffda732415e8105cad26a90337 by Andy Soffer : Internal changes PiperOrigin-RevId: 254286334 -- ce34b7f36933b30cfa35b9c9a5697a792b5666e4 by Andy Soffer : Internal changes PiperOrigin-RevId: 254273059 -- 6f9c473da7c2090c2e85a37c5f00622e8a912a89 by Jorg Brown : 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 : Adding short-hand IntervalClosed for IntervalClosedClosed and IntervalOpen for IntervalOpenOpen. PiperOrigin-RevId: 254252419 -- ea957f99b6a04fccd42aa05605605f3b44b1ecfd by Abseil Team : 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 : Internal changes PiperOrigin-RevId: 254242321 -- cffc793d93eca6d6bdf7de733847b6ab4a255ae9 by CJ Johnson : Adds benchmark for InlinedVector::reserve(size_type) PiperOrigin-RevId: 254199226 -- c90c7a9fa3c8f0c9d5114036979548b055ea2f2a by Gennadiy Rozental : Import of CCTZ from GitHub. PiperOrigin-RevId: 254072387 -- c4c388beae016c9570ab54ffa1d52660e4a85b7b by Laramie Leavitt : Internal cleanup. PiperOrigin-RevId: 254062381 -- d3c992e221cc74e5372d0c8fa410170b6a43c062 by Tom Manshreck : Update distributions.h to Abseil standards PiperOrigin-RevId: 254054946 -- d15ad0035c34ef11b14fadc5a4a2d3ec415f5518 by CJ Johnson : Removes functions with only one caller from the implementation details of InlinedVector by manually inlining the definitions PiperOrigin-RevId: 254005427 -- 2f37e807efc3a8ef1f4b539bdd379917d4151520 by Andy Soffer : Initial release of Abseil Random PiperOrigin-RevId: 253999861 -- 24ed1694b6430791d781ed533a8f8ccf6cac5856 by CJ Johnson : 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 : Adds benchmarks for InlinedVector::shrink_to_fit() PiperOrigin-RevId: 253989647 -- 2a96ddfdac40bbb8cb6a7f1aeab90917067c6e63 by Abseil Team : Initial release of Abseil Random PiperOrigin-RevId: 253927497 -- bf1aff8fc9ffa921ad74643e9525ecf25b0d8dc1 by Andy Soffer : Initial release of Abseil Random PiperOrigin-RevId: 253920512 -- bfc03f4a3dcda3cf3a4b84bdb84cda24e3394f41 by Laramie Leavitt : Internal change. PiperOrigin-RevId: 253886486 -- 05036cfcc078ca7c5f581a00dfb0daed568cbb69 by Eric Fiselier : 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 --- absl/random/generators_test.cc | 179 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 179 insertions(+) create mode 100644 absl/random/generators_test.cc (limited to 'absl/random/generators_test.cc') diff --git a/absl/random/generators_test.cc b/absl/random/generators_test.cc new file mode 100644 index 000000000000..41725f139cd3 --- /dev/null +++ b/absl/random/generators_test.cc @@ -0,0 +1,179 @@ +// 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 +#include +#include +#include + +#include "gtest/gtest.h" +#include "absl/random/distributions.h" +#include "absl/random/random.h" + +namespace { + +template +void TestUniform(URBG* gen) { + // [a, b) default-semantics, inferred types. + absl::Uniform(*gen, 0, 100); // int + absl::Uniform(*gen, 0, 1.0); // Promoted to double + absl::Uniform(*gen, 0.0f, 1.0); // Promoted to double + absl::Uniform(*gen, 0.0, 1.0); // double + absl::Uniform(*gen, -1, 1L); // Promoted to long + + // Roll a die. + absl::Uniform(absl::IntervalClosedClosed, *gen, 1, 6); + + // Get a fraction. + absl::Uniform(absl::IntervalOpenOpen, *gen, 0.0, 1.0); + + // Assign a value to a random element. + std::vector elems = {10, 20, 30, 40, 50}; + elems[absl::Uniform(*gen, 0u, elems.size())] = 5; + elems[absl::Uniform(*gen, 0, elems.size())] = 3; + + // Choose some epsilon around zero. + absl::Uniform(absl::IntervalOpenOpen, *gen, -1.0, 1.0); + + // (a, b) semantics, inferred types. + absl::Uniform(absl::IntervalOpenOpen, *gen, 0, 1.0); // Promoted to double + + // Explict overriding of types. + absl::Uniform(*gen, 0, 100); + absl::Uniform(*gen, 0, 100); + absl::Uniform(*gen, 0, 100); + absl::Uniform(*gen, 0, 100); + absl::Uniform(*gen, 0, 1 << 10); + absl::Uniform(*gen, 0, 1 << 10); + absl::Uniform(*gen, 0, 1 << 10); + absl::Uniform(*gen, 0, 1 << 10); + + absl::Uniform(*gen, 0.0, 1.0); + absl::Uniform(*gen, 0, 1); + absl::Uniform(*gen, -1, 1); + absl::Uniform(*gen, 0.0, 1.0); + + absl::Uniform(*gen, -1.0, 0); + absl::Uniform(*gen, -1.0, 0); + + // Tagged + absl::Uniform(absl::IntervalClosedClosed, *gen, 0, 1); + absl::Uniform(absl::IntervalClosedOpen, *gen, 0, 1); + absl::Uniform(absl::IntervalOpenOpen, *gen, 0, 1); + absl::Uniform(absl::IntervalOpenClosed, *gen, 0, 1); + absl::Uniform(absl::IntervalClosedClosed, *gen, 0, 1); + absl::Uniform(absl::IntervalOpenOpen, *gen, 0, 1); + + absl::Uniform(absl::IntervalClosedClosed, *gen, 0, 100); + absl::Uniform(absl::IntervalClosedOpen, *gen, 0, 100); + absl::Uniform(absl::IntervalOpenOpen, *gen, 0, 100); + absl::Uniform(absl::IntervalOpenClosed, *gen, 0, 100); + absl::Uniform(absl::IntervalClosedClosed, *gen, 0, 100); + absl::Uniform(absl::IntervalOpenOpen, *gen, 0, 100); + + // With *generator as an R-value reference. + absl::Uniform(URBG(), 0, 100); + absl::Uniform(URBG(), 0.0, 1.0); +} + +template +void TestExponential(URBG* gen) { + absl::Exponential(*gen); + absl::Exponential(*gen); + absl::Exponential(URBG()); +} + +template +void TestPoisson(URBG* gen) { + // [rand.dist.pois] Indicates that the std::poisson_distribution + // is parameterized by IntType, however MSVC does not allow 8-bit + // types. + absl::Poisson(*gen); + absl::Poisson(*gen); + absl::Poisson(*gen); + absl::Poisson(*gen); + absl::Poisson(*gen); + absl::Poisson(*gen); + absl::Poisson(*gen); + absl::Poisson(URBG()); +} + +template +void TestBernoulli(URBG* gen) { + absl::Bernoulli(*gen, 0.5); + absl::Bernoulli(*gen, 0.5); +} + +template +void TestZipf(URBG* gen) { + absl::Zipf(*gen, 100); + absl::Zipf(*gen, 100); + absl::Zipf(*gen, 100); + absl::Zipf(*gen, 100); + absl::Zipf(*gen, 1 << 10); + absl::Zipf(*gen, 1 << 10); + absl::Zipf(*gen, 1 << 10); + absl::Zipf(*gen, 1 << 10); + absl::Zipf(URBG(), 1 << 10); +} + +template +void TestGaussian(URBG* gen) { + absl::Gaussian(*gen, 1.0, 1.0); + absl::Gaussian(*gen, 1.0, 1.0); + absl::Gaussian(URBG(), 1.0, 1.0); +} + +template +void TestLogNormal(URBG* gen) { + absl::LogUniform(*gen, 0, 100); + absl::LogUniform(*gen, 0, 100); + absl::LogUniform(*gen, 0, 100); + absl::LogUniform(*gen, 0, 100); + absl::LogUniform(*gen, 0, 1 << 10); + absl::LogUniform(*gen, 0, 1 << 10); + absl::LogUniform(*gen, 0, 1 << 10); + absl::LogUniform(*gen, 0, 1 << 10); + absl::LogUniform(URBG(), 0, 1 << 10); +} + +template +void CompatibilityTest() { + URBG gen; + + TestUniform(&gen); + TestExponential(&gen); + TestPoisson(&gen); + TestBernoulli(&gen); + TestZipf(&gen); + TestGaussian(&gen); + TestLogNormal(&gen); +} + +TEST(std_mt19937_64, Compatibility) { + // Validate with std::mt19937_64 + CompatibilityTest(); +} + +TEST(BitGen, Compatibility) { + // Validate with absl::BitGen + CompatibilityTest(); +} + +TEST(InsecureBitGen, Compatibility) { + // Validate with absl::InsecureBitGen + CompatibilityTest(); +} + +} // namespace -- cgit 1.4.1