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/* Copyright 2022 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Simple test to validate the benchmark library.
*/
#include "benchmark.h"
extern "C" {
#include "test_util.h"
}
/* Sample function for the benchmark */
static void float_mult()
{
float a = 1.1;
float b = 1.1;
int i;
for (i = 0; i < 1000; ++i)
a *= b;
}
test_static int test_valid_benchmark()
{
Benchmark benchmark;
auto result = benchmark.run("float_mult", float_mult);
TEST_ASSERT(result.has_value());
benchmark.print_results();
return EC_SUCCESS;
}
test_static int test_num_iterations()
{
Benchmark benchmark({ .num_iterations = 5 });
int num_calls = 0;
auto result = benchmark.run("call_counter", [&] { ++num_calls; });
TEST_ASSERT(result.has_value());
TEST_EQ(num_calls, 5, "%d");
benchmark.print_results();
return EC_SUCCESS;
}
test_static int test_multiple_benchmarks()
{
// Use two separate instances with different settings
Benchmark benchmark1({ .num_iterations = 5 });
Benchmark benchmark2({ .num_iterations = 3 });
int num_calls = 0;
auto result1 = benchmark1.run("call_counter1", [&] { ++num_calls; });
TEST_ASSERT(result1.has_value());
TEST_EQ(num_calls, 5, "%d");
num_calls = 0;
auto result2 = benchmark2.run("call_counter2", [&] { ++num_calls; });
TEST_ASSERT(result2.has_value());
TEST_EQ(num_calls, 3, "%d");
benchmark1.print_results();
benchmark2.print_results();
return EC_SUCCESS;
}
test_static int test_long_benchmark()
{
Benchmark benchmark({ .num_iterations = 100 });
int num_calls = 0;
auto result = benchmark.run("call_counter", [&] {
++num_calls;
udelay(10000);
});
TEST_ASSERT(result.has_value());
TEST_EQ(num_calls, 100, "%d");
benchmark.print_results();
return EC_SUCCESS;
}
test_static int test_result_comparison()
{
constexpr auto result1 = BenchmarkResult{
.name = "implementation1",
.elapsed_time = 10000,
.average_time = 100,
.min_time = 10,
.max_time = 200,
};
constexpr auto result2 = BenchmarkResult{
.name = "implementation2",
.elapsed_time = 8000,
.average_time = 80,
.min_time = 13,
.max_time = 150,
};
BenchmarkResult::compare(result1, result2);
return EC_SUCCESS;
}
test_static int test_empty_benchmark_name()
{
Benchmark benchmark;
TEST_ASSERT(!benchmark.run("", [] {}).has_value());
return EC_SUCCESS;
}
test_static int test_too_many_runs()
{
auto benchmark = Benchmark<3>();
TEST_ASSERT(benchmark.run("call_1", [] {}).has_value());
TEST_ASSERT(benchmark.run("call_2", [] {}).has_value());
TEST_ASSERT(benchmark.run("call_3", [] {}).has_value());
TEST_ASSERT(!benchmark.run("call_4", [] {}).has_value());
return EC_SUCCESS;
}
test_static int test_min_max_time()
{
// Run test 3 times with increasing delay of 1ms, 2ms, and 4ms
Benchmark benchmark({ .num_iterations = 3 });
int delay_us = 1000;
auto result = benchmark.run("delay", [&delay_us] {
udelay(delay_us);
delay_us *= 2;
});
TEST_ASSERT(result.has_value());
auto min_time = result.value().min_time;
auto max_time = result.value().max_time;
TEST_GE(min_time, 995U, "%u");
TEST_LE(min_time, 1005U, "%u");
TEST_GE(max_time, 3995U, "%u");
TEST_LE(max_time, 4005U, "%u");
benchmark.print_results();
return EC_SUCCESS;
}
void run_test(int argc, const char **argv)
{
test_reset();
RUN_TEST(test_valid_benchmark);
RUN_TEST(test_num_iterations);
RUN_TEST(test_multiple_benchmarks);
RUN_TEST(test_long_benchmark);
RUN_TEST(test_result_comparison);
RUN_TEST(test_too_many_runs);
RUN_TEST(test_empty_benchmark_name);
RUN_TEST(test_min_max_time);
test_print_result();
}
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