diff options
Diffstat (limited to 'absl/random/discrete_distribution_test.cc')
| -rw-r--r-- | absl/random/discrete_distribution_test.cc | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/absl/random/discrete_distribution_test.cc b/absl/random/discrete_distribution_test.cc index 7296f0ac..6d007006 100644 --- a/absl/random/discrete_distribution_test.cc +++ b/absl/random/discrete_distribution_test.cc @@ -29,6 +29,7 @@ #include "absl/base/internal/raw_logging.h" #include "absl/random/internal/chi_square.h" #include "absl/random/internal/distribution_test_util.h" +#include "absl/random/internal/pcg_engine.h" #include "absl/random/internal/sequence_urbg.h" #include "absl/random/random.h" #include "absl/strings/str_cat.h" @@ -156,7 +157,10 @@ TEST(DiscreteDistributionTest, ChiSquaredTest50) { std::iota(std::begin(weights), std::end(weights), 1); absl::discrete_distribution<int> dist(std::begin(weights), std::end(weights)); - 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); std::vector<int32_t> counts(kBuckets, 0); for (size_t i = 0; i < kTrials; i++) { |