Fix emulator build error
[platform/framework/web/chromium-efl.git] / base / rand_util_perftest.cc
1 // Copyright 2021 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "base/rand_util.h"
6 #include "base/time/time.h"
7 #include "testing/gtest/include/gtest/gtest.h"
8 #include "testing/perf/perf_result_reporter.h"
9
10 namespace base {
11
12 namespace {
13
14 constexpr char kMetricPrefix[] = "RandUtil.";
15 constexpr char kThroughput[] = "throughput";
16
17 }  // namespace
18
19 TEST(RandUtilPerfTest, RandUint64) {
20   uint64_t inclusive_or = 0;
21   constexpr int kIterations = 1e7;
22
23   auto before = base::TimeTicks::Now();
24   for (int iter = 0; iter < kIterations; iter++) {
25     inclusive_or |= base::RandUint64();
26   }
27   auto after = base::TimeTicks::Now();
28
29   perf_test::PerfResultReporter reporter(kMetricPrefix, "RandUint64");
30   reporter.RegisterImportantMetric(kThroughput, "ns / iteration");
31
32   uint64_t nanos_per_iteration = (after - before).InNanoseconds() / kIterations;
33   reporter.AddResult("throughput", static_cast<size_t>(nanos_per_iteration));
34   ASSERT_NE(inclusive_or, static_cast<uint64_t>(0));
35 }
36
37 TEST(RandUtilPerfTest, InsecureRandomRandUint64) {
38   base::InsecureRandomGenerator gen;
39
40   uint64_t inclusive_or = 0;
41   constexpr int kIterations = 1e7;
42
43   auto before = base::TimeTicks::Now();
44   for (int iter = 0; iter < kIterations; iter++) {
45     inclusive_or |= gen.RandUint64();
46   }
47   auto after = base::TimeTicks::Now();
48
49   perf_test::PerfResultReporter reporter(kMetricPrefix,
50                                          "InsecureRandomRandUint64");
51   reporter.RegisterImportantMetric(kThroughput, "ns / iteration");
52
53   uint64_t nanos_per_iteration = (after - before).InNanoseconds() / kIterations;
54   reporter.AddResult("throughput", static_cast<size_t>(nanos_per_iteration));
55   ASSERT_NE(inclusive_or, static_cast<uint64_t>(0));
56 }
57
58 }  // namespace base