12bc53e031
-- c99f979ad34f155fbeeea69b88bdc7458d89a21c by Derek Mauro <dmauro@google.com>: Remove a floating point division by zero test. This isn't testing behavior related to the library, and MSVC warns about it in opt mode. PiperOrigin-RevId: 285220804 -- 68b015491f0dbf1ab547994673281abd1f34cd4b by Gennadiy Rozental <rogeeff@google.com>: This CL introduces following changes to the class FlagImpl: * We eliminate the CommandLineFlagLocks struct. Instead callback guard and callback function are combined into a single CallbackData struct, while primary data lock is stored separately. * CallbackData member of class FlagImpl is initially set to be nullptr and is only allocated and initialized when a flag's callback is being set. For most flags we do not pay for the extra space and extra absl::Mutex now. * Primary data guard is stored in data_guard_ data member. This is a properly aligned character buffer of necessary size. During initialization of the flag we construct absl::Mutex in this space using placement new call. * We now avoid extra value copy after successful attempt to parse value out of string. Instead we swap flag's current value with tentative value we just produced. PiperOrigin-RevId: 285132636 -- ed45d118fb818969eb13094cf7827c885dfc562c by Tom Manshreck <shreck@google.com>: Change null-term* (and nul-term*) to NUL-term* in comments PiperOrigin-RevId: 285036610 -- 729619017944db895ce8d6d29c1995aa2e5628a5 by Derek Mauro <dmauro@google.com>: Use the Posix implementation of thread identity on MinGW. Some versions of MinGW suffer from thread_local bugs. PiperOrigin-RevId: 285022920 -- 39a25493503c76885bc3254c28f66a251c5b5bb0 by Greg Falcon <gfalcon@google.com>: Implementation detail change. Add further ABSL_NAMESPACE_BEGIN and _END annotation macros to files in Abseil. PiperOrigin-RevId: 285012012 GitOrigin-RevId: c99f979ad34f155fbeeea69b88bdc7458d89a21c Change-Id: I4c85d3704e45d11a9ac50d562f39640a6adbedc1
101 lines
3.1 KiB
C++
101 lines
3.1 KiB
C++
//
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// Copyright 2018 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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//
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#include "absl/random/bit_gen_ref.h"
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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#include "absl/random/internal/sequence_urbg.h"
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#include "absl/random/random.h"
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namespace absl {
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ABSL_NAMESPACE_BEGIN
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class ConstBitGen : public absl::random_internal::MockingBitGenBase {
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bool CallImpl(const std::type_info&, void*, void* result) override {
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*static_cast<int*>(result) = 42;
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return true;
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}
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};
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namespace random_internal {
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template <>
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struct DistributionCaller<ConstBitGen> {
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template <typename DistrT, typename FormatT, typename... Args>
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static typename DistrT::result_type Call(ConstBitGen* gen, Args&&... args) {
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return gen->template Call<DistrT, FormatT>(std::forward<Args>(args)...);
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}
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};
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} // namespace random_internal
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namespace {
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int FnTest(absl::BitGenRef gen_ref) { return absl::Uniform(gen_ref, 1, 7); }
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template <typename T>
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class BitGenRefTest : public testing::Test {};
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using BitGenTypes =
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::testing::Types<absl::BitGen, absl::InsecureBitGen, std::mt19937,
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std::mt19937_64, std::minstd_rand>;
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TYPED_TEST_SUITE(BitGenRefTest, BitGenTypes);
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TYPED_TEST(BitGenRefTest, BasicTest) {
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TypeParam gen;
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auto x = FnTest(gen);
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EXPECT_NEAR(x, 4, 3);
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}
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TYPED_TEST(BitGenRefTest, Copyable) {
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TypeParam gen;
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absl::BitGenRef gen_ref(gen);
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FnTest(gen_ref); // Copy
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}
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TEST(BitGenRefTest, PassThroughEquivalence) {
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// sequence_urbg returns 64-bit results.
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absl::random_internal::sequence_urbg urbg(
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{0x0003eb76f6f7f755ull, 0xFFCEA50FDB2F953Bull, 0xC332DDEFBE6C5AA5ull,
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0x6558218568AB9702ull, 0x2AEF7DAD5B6E2F84ull, 0x1521B62829076170ull,
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0xECDD4775619F1510ull, 0x13CCA830EB61BD96ull, 0x0334FE1EAA0363CFull,
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0xB5735C904C70A239ull, 0xD59E9E0BCBAADE14ull, 0xEECC86BC60622CA7ull});
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std::vector<uint64_t> output(12);
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{
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absl::BitGenRef view(urbg);
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for (auto& v : output) {
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v = view();
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}
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}
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std::vector<uint64_t> expected(
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{0x0003eb76f6f7f755ull, 0xFFCEA50FDB2F953Bull, 0xC332DDEFBE6C5AA5ull,
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0x6558218568AB9702ull, 0x2AEF7DAD5B6E2F84ull, 0x1521B62829076170ull,
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0xECDD4775619F1510ull, 0x13CCA830EB61BD96ull, 0x0334FE1EAA0363CFull,
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0xB5735C904C70A239ull, 0xD59E9E0BCBAADE14ull, 0xEECC86BC60622CA7ull});
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EXPECT_THAT(output, testing::Eq(expected));
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}
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TEST(BitGenRefTest, MockingBitGenBaseOverrides) {
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ConstBitGen const_gen;
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EXPECT_EQ(FnTest(const_gen), 42);
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absl::BitGenRef gen_ref(const_gen);
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EXPECT_EQ(FnTest(gen_ref), 42); // Copy
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}
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} // namespace
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ABSL_NAMESPACE_END
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} // namespace absl
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