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#undef NDEBUG
#include <cassert>
#include <vector>
#include "../src/check.h" // NOTE: check.h is for internal use only!
#include "benchmark/benchmark.h"
namespace {
class TestReporter : public benchmark::ConsoleReporter {
public:
virtual void ReportRuns(const std::vector<Run>& report) {
all_runs_.insert(all_runs_.end(), begin(report), end(report));
ConsoleReporter::ReportRuns(report);
}
std::vector<Run> all_runs_;
};
struct TestCase {
std::string name;
const char* label;
// Note: not explicit as we rely on it being converted through ADD_CASES.
TestCase(const char* xname) : TestCase(xname, nullptr) {}
TestCase(const char* xname, const char* xlabel)
: name(xname), label(xlabel) {}
typedef benchmark::BenchmarkReporter::Run Run;
void CheckRun(Run const& run) const {
CHECK(name == run.benchmark_name) << "expected " << name << " got "
<< run.benchmark_name;
if (label) {
CHECK(run.report_label == label) << "expected " << label << " got "
<< run.report_label;
} else {
CHECK(run.report_label == "");
}
}
};
std::vector<TestCase> ExpectedResults;
int AddCases(std::initializer_list<TestCase> const& v) {
for (auto N : v) {
ExpectedResults.push_back(N);
}
return 0;
}
#define CONCAT(x, y) CONCAT2(x, y)
#define CONCAT2(x, y) x##y
#define ADD_CASES(...) int CONCAT(dummy, __LINE__) = AddCases({__VA_ARGS__})
} // end namespace
typedef benchmark::internal::Benchmark* ReturnVal;
//----------------------------------------------------------------------------//
// Test RegisterBenchmark with no additional arguments
//----------------------------------------------------------------------------//
void BM_function(benchmark::State& state) {
for (auto _ : state) {
}
}
BENCHMARK(BM_function);
ReturnVal dummy = benchmark::RegisterBenchmark(
"BM_function_manual_registration", BM_function);
ADD_CASES({"BM_function"}, {"BM_function_manual_registration"});
//----------------------------------------------------------------------------//
// Test RegisterBenchmark with additional arguments
// Note: GCC <= 4.8 do not support this form of RegisterBenchmark because they
// reject the variadic pack expansion of lambda captures.
//----------------------------------------------------------------------------//
#ifndef BENCHMARK_HAS_NO_VARIADIC_REGISTER_BENCHMARK
void BM_extra_args(benchmark::State& st, const char* label) {
for (auto _ : st) {
}
st.SetLabel(label);
}
int RegisterFromFunction() {
std::pair<const char*, const char*> cases[] = {
{"test1", "One"}, {"test2", "Two"}, {"test3", "Three"}};
for (auto const& c : cases)
benchmark::RegisterBenchmark(c.first, &BM_extra_args, c.second);
return 0;
}
int dummy2 = RegisterFromFunction();
ADD_CASES({"test1", "One"}, {"test2", "Two"}, {"test3", "Three"});
#endif // BENCHMARK_HAS_NO_VARIADIC_REGISTER_BENCHMARK
//----------------------------------------------------------------------------//
// Test RegisterBenchmark with different callable types
//----------------------------------------------------------------------------//
struct CustomFixture {
void operator()(benchmark::State& st) {
for (auto _ : st) {
}
}
};
void TestRegistrationAtRuntime() {
#ifdef BENCHMARK_HAS_CXX11
{
CustomFixture fx;
benchmark::RegisterBenchmark("custom_fixture", fx);
AddCases({"custom_fixture"});
}
#endif
#ifndef BENCHMARK_HAS_NO_VARIADIC_REGISTER_BENCHMARK
{
const char* x = "42";
auto capturing_lam = [=](benchmark::State& st) {
for (auto _ : st) {
}
st.SetLabel(x);
};
benchmark::RegisterBenchmark("lambda_benchmark", capturing_lam);
AddCases({{"lambda_benchmark", x}});
}
#endif
}
// Test that all benchmarks, registered at either during static init or runtime,
// are run and the results are passed to the reported.
void RunTestOne() {
TestRegistrationAtRuntime();
TestReporter test_reporter;
benchmark::RunSpecifiedBenchmarks(&test_reporter);
typedef benchmark::BenchmarkReporter::Run Run;
auto EB = ExpectedResults.begin();
for (Run const& run : test_reporter.all_runs_) {
assert(EB != ExpectedResults.end());
EB->CheckRun(run);
++EB;
}
assert(EB == ExpectedResults.end());
}
// Test that ClearRegisteredBenchmarks() clears all previously registered
// benchmarks.
// Also test that new benchmarks can be registered and ran afterwards.
void RunTestTwo() {
assert(ExpectedResults.size() != 0 &&
"must have at least one registered benchmark");
ExpectedResults.clear();
benchmark::ClearRegisteredBenchmarks();
TestReporter test_reporter;
size_t num_ran = benchmark::RunSpecifiedBenchmarks(&test_reporter);
assert(num_ran == 0);
assert(test_reporter.all_runs_.begin() == test_reporter.all_runs_.end());
TestRegistrationAtRuntime();
num_ran = benchmark::RunSpecifiedBenchmarks(&test_reporter);
assert(num_ran == ExpectedResults.size());
typedef benchmark::BenchmarkReporter::Run Run;
auto EB = ExpectedResults.begin();
for (Run const& run : test_reporter.all_runs_) {
assert(EB != ExpectedResults.end());
EB->CheckRun(run);
++EB;
}
assert(EB == ExpectedResults.end());
}
int main(int argc, char* argv[]) {
benchmark::Initialize(&argc, argv);
RunTestOne();
RunTestTwo();
}
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