diff options
author | 2020-09-25 17:10:06 -0400 | |
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committer | 2020-09-25 17:10:06 -0400 | |
commit | 4e1c98fe594d99494ce26e94a77f0358705f227c (patch) | |
tree | a07e9daefa3b5acf716ce89fa1a1c9b500fde795 /absl/random/bernoulli_distribution_test.cc | |
parent | 7a1e14d0d29736ba9c2884d0ce81fc0af92f6ab3 (diff) | |
parent | b56cbdd23834a65682c0b46f367f8679e83bc894 (diff) |
Merge new upstream LTS 20200923
Diffstat (limited to 'absl/random/bernoulli_distribution_test.cc')
-rw-r--r-- | absl/random/bernoulli_distribution_test.cc | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/absl/random/bernoulli_distribution_test.cc b/absl/random/bernoulli_distribution_test.cc index f2c3b99c..b250f878 100644 --- a/absl/random/bernoulli_distribution_test.cc +++ b/absl/random/bernoulli_distribution_test.cc @@ -21,6 +21,7 @@ #include <utility> #include "gtest/gtest.h" +#include "absl/random/internal/pcg_engine.h" #include "absl/random/internal/sequence_urbg.h" #include "absl/random/random.h" @@ -63,7 +64,10 @@ TEST_P(BernoulliTest, Accuracy) { size_t trials = para.second; double p = para.first; - absl::InsecureBitGen rng; + // We use a fixed bit generator for distribution accuracy tests. This allows + // these tests to be deterministic, while still testing the qualify of the + // implementation. + absl::random_internal::pcg64_2018_engine rng(0x2B7E151628AED2A6); size_t yes = 0; absl::bernoulli_distribution dist(p); @@ -131,7 +135,7 @@ TEST(BernoulliTest, StabilityTest) { 0x275b0dc7e0a18acfull, 0x36cebe0d2653682eull, 0x0361e9b23861596bull, }); - // Generate a std::string of '0' and '1' for the distribution output. + // Generate a string of '0' and '1' for the distribution output. auto generate = [&urbg](absl::bernoulli_distribution& dist) { std::string output; output.reserve(36); @@ -176,7 +180,7 @@ TEST(BernoulliTest, StabilityTest2) { 0xECDD4775619F1510ull, 0x13CCA830EB61BD96ull, 0x0334FE1EAA0363CFull, 0xB5735C904C70A239ull, 0xD59E9E0BCBAADE14ull, 0xEECC86BC60622CA7ull}); - // Generate a std::string of '0' and '1' for the distribution output. + // Generate a string of '0' and '1' for the distribution output. auto generate = [&urbg](absl::bernoulli_distribution& dist) { std::string output; output.reserve(13); |