mirror of
https://github.com/scylladb/scylladb.git
synced 2026-04-28 04:06:59 +00:00
fcb8d040e8
Instead of lengthy blurbs, switch to single-line, machine-readable standardized (https://spdx.dev) license identifiers. The Linux kernel switched long ago, so there is strong precedent. Three cases are handled: AGPL-only, Apache-only, and dual licensed. For the latter case, I chose (AGPL-3.0-or-later and Apache-2.0), reasoning that our changes are extensive enough to apply our license. The changes we applied mechanically with a script, except to licenses/README.md. Closes #9937
73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
/*
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2017-present ScyllaDB
|
|
*/
|
|
|
|
/*
|
|
* SPDX-License-Identifier: (AGPL-3.0-or-later and Apache-2.0)
|
|
*/
|
|
|
|
#define BOOST_TEST_MODULE core
|
|
|
|
#include <boost/test/unit_test.hpp>
|
|
#include "utils/streaming_histogram.hh"
|
|
#include <seastar/core/print.hh>
|
|
#include <map>
|
|
#include <cmath>
|
|
|
|
BOOST_AUTO_TEST_CASE(basic_streaming_histogram_test) {
|
|
utils::streaming_histogram hist(5);
|
|
long samples[] = {23, 19, 10, 16, 36, 2, 9, 32, 30, 45};
|
|
|
|
// add 7 points to histogram of 5 bins
|
|
for (int i = 0; i < 7; i++) {
|
|
hist.update(samples[i]);
|
|
}
|
|
|
|
// should end up (2,1),(9.5,2),(17.5,2),(23,1),(36,1)
|
|
std::map<double, uint64_t> expected1;
|
|
expected1.emplace(2.0, 1L);
|
|
expected1.emplace(9.5, 2L);
|
|
expected1.emplace(17.5, 2L);
|
|
expected1.emplace(23.0, 1L);
|
|
expected1.emplace(36.0, 1L);
|
|
|
|
auto expected_itr = expected1.begin();
|
|
for (auto& actual : hist.bin) {
|
|
auto entry = expected_itr++;
|
|
// Asserts that two keys are equal to within a positive delta
|
|
BOOST_REQUIRE(std::fabs(entry->first - actual.first) <= 0.01);
|
|
BOOST_REQUIRE_EQUAL(entry->second, actual.second);
|
|
}
|
|
|
|
// merge test
|
|
utils::streaming_histogram hist2(3);
|
|
for (int i = 7; i < int(sizeof(samples)/sizeof(samples[0])); i++) {
|
|
hist2.update(samples[i]);
|
|
}
|
|
hist.merge(hist2);
|
|
// should end up (2,1),(9.5,2),(19.33,3),(32.67,3),(45,1)
|
|
std::map<double, uint64_t> expected2;
|
|
expected2.emplace(2.0, 1L);
|
|
expected2.emplace(9.5, 2L);
|
|
expected2.emplace(19.33, 3L);
|
|
expected2.emplace(32.67, 3L);
|
|
expected2.emplace(45.0, 1L);
|
|
expected_itr = expected2.begin();
|
|
for (auto& actual : hist.bin) {
|
|
auto entry = expected_itr++;
|
|
// Asserts that two keys are equal to within a positive delta
|
|
BOOST_REQUIRE(std::fabs(entry->first - actual.first) <= 0.01);
|
|
BOOST_REQUIRE_EQUAL(entry->second, actual.second);
|
|
}
|
|
|
|
|
|
// sum test
|
|
BOOST_REQUIRE(std::fabs(3.28 - hist.sum(15)) <= 0.01);
|
|
// sum test (b > max(hist))
|
|
BOOST_REQUIRE(std::fabs(10.0 - hist.sum(50)) <= 0.01);
|
|
}
|
|
|