mirror of https://github.com/facebook/rocksdb.git
63 lines
1.6 KiB
C++
63 lines
1.6 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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//
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#include "util/histogram.h"
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#include "util/testharness.h"
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namespace rocksdb {
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class HistogramTest : public testing::Test {};
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TEST_F(HistogramTest, BasicOperation) {
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HistogramImpl histogram;
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for (uint64_t i = 1; i <= 100; i++) {
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histogram.Add(i);
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}
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{
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double median = histogram.Median();
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// ASSERT_LE(median, 50);
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ASSERT_GT(median, 0);
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}
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{
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double percentile100 = histogram.Percentile(100.0);
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ASSERT_LE(percentile100, 100.0);
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ASSERT_GT(percentile100, 0.0);
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double percentile99 = histogram.Percentile(99.0);
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double percentile85 = histogram.Percentile(85.0);
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ASSERT_LE(percentile99, 99.0);
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ASSERT_TRUE(percentile99 >= percentile85);
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}
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ASSERT_EQ(histogram.Average(), 50.5); // avg is acurately calculated.
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}
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TEST_F(HistogramTest, EmptyHistogram) {
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HistogramImpl histogram;
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ASSERT_EQ(histogram.Median(), 0.0);
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ASSERT_EQ(histogram.Percentile(85.0), 0.0);
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ASSERT_EQ(histogram.Average(), 0.0);
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}
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TEST_F(HistogramTest, ClearHistogram) {
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HistogramImpl histogram;
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for (uint64_t i = 1; i <= 100; i++) {
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histogram.Add(i);
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}
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histogram.Clear();
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ASSERT_EQ(histogram.Median(), 0);
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ASSERT_EQ(histogram.Percentile(85.0), 0);
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ASSERT_EQ(histogram.Average(), 0);
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}
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} // namespace rocksdb
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int main(int argc, char** argv) {
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::testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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}
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