21a021e800
[ Merge of http://go/wvgerrit/137809 ] Bug: 204946540 Test: Metric unit tests Change-Id: Ibd68db73ea9ee64664d33c2cb8e8bb7c56674c27
47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
// Copyright 2017 Google Inc. All Rights Reserved.
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//
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// Unit tests for Distribution.
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#include <float.h>
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#include "distribution.h"
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#include "gtest/gtest.h"
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namespace wvcdm {
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namespace metrics {
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TEST(DistributionTest, NoValuesRecorded) {
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Distribution distribution;
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EXPECT_EQ(FLT_MAX, distribution.Min());
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EXPECT_EQ(-FLT_MAX, distribution.Max());
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EXPECT_EQ(0, distribution.Mean());
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EXPECT_EQ(0u, distribution.Count());
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EXPECT_EQ(0, distribution.Variance());
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}
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TEST(DistributionTest, OneValueRecorded) {
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Distribution distribution;
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distribution.Record(5.0);
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EXPECT_EQ(5, distribution.Min());
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EXPECT_EQ(5, distribution.Max());
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EXPECT_EQ(5, distribution.Mean());
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EXPECT_EQ(1u, distribution.Count());
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EXPECT_EQ(0, distribution.Variance());
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}
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TEST(DistributionTest, MultipleValuesRecorded) {
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Distribution distribution;
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distribution.Record(5.0);
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distribution.Record(10.0);
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distribution.Record(15.0);
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EXPECT_EQ(5, distribution.Min());
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EXPECT_EQ(15, distribution.Max());
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EXPECT_EQ(10, distribution.Mean());
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EXPECT_EQ(3u, distribution.Count());
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EXPECT_NEAR(16.6667, distribution.Variance(), 0.0001);
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}
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} // namespace metrics
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} // namespace wvcdm
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