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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
#include <gtest/gtest.h>
#include <cstdint>
#include <random>
#include <set>
#include <string>
#include <utility>
#include "src/common/fast_random_number_generator.h"
using opentelemetry::sdk::common::FastRandomNumberGenerator;
TEST(FastRandomNumberGeneratorTest, GenerateUniqueNumbers)
{
std::seed_seq seed_sequence{1, 2, 3};
FastRandomNumberGenerator random_number_generator;
random_number_generator.seed(seed_sequence);
std::set<uint64_t> values;
for (int i = 0; i < 1000; ++i)
{
EXPECT_TRUE(values.insert(random_number_generator()).second);
}
}
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