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#include "summary_collector.h"
#include <library/cpp/testing/unittest/registar.h>
#include <util/random/random.h>
#include <numeric>
#include <algorithm>
namespace NMonitoring {
Y_UNIT_TEST_SUITE(SummaryCollectorTest) {
void CheckSnapshot(ISummaryDoubleSnapshotPtr snapshot, const TVector<double> values) {
const double eps = 1e-9;
double sum = std::accumulate(values.begin(), values.end(), 0.0);
double min = *std::min_element(values.begin(), values.end());
double max = *std::max_element(values.begin(), values.end());
double last = values.back();
ui64 count = values.size();
UNIT_ASSERT_DOUBLES_EQUAL(snapshot->GetSum(), sum, eps);
UNIT_ASSERT_DOUBLES_EQUAL(snapshot->GetMin(), min, eps);
UNIT_ASSERT_DOUBLES_EQUAL(snapshot->GetMax(), max, eps);
UNIT_ASSERT_DOUBLES_EQUAL(snapshot->GetLast(), last, eps);
UNIT_ASSERT_EQUAL(snapshot->GetCount(), count);
}
Y_UNIT_TEST(Simple) {
{
TVector<double> test{05, -1.5, 0.0, 2.5, 0.25, -1.0};
TSummaryDoubleCollector summary;
for (auto value : test) {
summary.Collect(value);
}
CheckSnapshot(summary.Snapshot(), test);
}
{
TVector<double> test{-1.0, 1.0, 9.0, -5000.0, 5000.0, 5.0, -5.0};
TSummaryDoubleCollector summary;
for (auto value : test) {
summary.Collect(value);
}
CheckSnapshot(summary.Snapshot(), test);
}
}
Y_UNIT_TEST(RandomStressTest) {
const ui32 attemts = 100;
for (ui32 i = 0; i < attemts; ++i) {
const ui32 size = 100;
TVector<double> values(size);
TSummaryDoubleCollector summary;
for (auto& value : values) {
value = RandomNumber<double>() - 0.5;
summary.Collect(value);
}
CheckSnapshot(summary.Snapshot(), values);
}
}
}
}
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