1b95db51f1
[ Merge of http://go/wvgerrit/137810 ] Bug: 204946540 Test: Metric unit tests Change-Id: I78f839fafd27604a2bb78c04d587c40919c5372d
47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
// Copyright 2017 Google LLC. All Rights Reserved. This file and proprietary
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// source code may only be used and distributed under the Widevine License
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// Agreement.
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//
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// Unit tests for Distribution.
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#include "distribution.h"
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#include <float.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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