39 lines
1.3 KiB
C++
39 lines
1.3 KiB
C++
#include "web_server/src/Sliding_Statistics.hpp"
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#include <gtest/gtest.h>
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#include <limits>
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namespace aethera::web {
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TEST(Sliding_Statistics, Derives_Window_Statistics_On_Demand) {
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Sliding_Statistics statistics{20};
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for (int value = 1; value <= 20; ++value)
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statistics.submit(static_cast<double>(value));
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const auto snapshot = statistics.snapshot();
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EXPECT_EQ(snapshot.count, 20U);
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EXPECT_DOUBLE_EQ(snapshot.latest, 20.0);
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EXPECT_DOUBLE_EQ(snapshot.minimum, 1.0);
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EXPECT_DOUBLE_EQ(snapshot.maximum, 20.0);
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EXPECT_DOUBLE_EQ(snapshot.average, 10.5);
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EXPECT_DOUBLE_EQ(snapshot.trimmed_average, 10.5);
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EXPECT_DOUBLE_EQ(snapshot.p50, 10.0);
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EXPECT_DOUBLE_EQ(snapshot.p95, 19.0);
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EXPECT_DOUBLE_EQ(snapshot.p99, 20.0);
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}
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TEST(Sliding_Statistics, Overwrites_Oldest_And_Ignores_Nonfinite_Values) {
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Sliding_Statistics statistics{3};
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statistics.submit(1.0);
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statistics.submit(2.0);
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statistics.submit(std::numeric_limits<double>::infinity());
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statistics.submit(3.0);
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statistics.submit(4.0);
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const auto snapshot = statistics.snapshot();
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EXPECT_EQ(snapshot.count, 3U);
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EXPECT_DOUBLE_EQ(snapshot.latest, 4.0);
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EXPECT_DOUBLE_EQ(snapshot.minimum, 2.0);
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EXPECT_DOUBLE_EQ(snapshot.maximum, 4.0);
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EXPECT_DOUBLE_EQ(snapshot.average, 3.0);
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}
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}
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