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95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
// histogramtests.cpp : histogram.{h,cpp} unit tests
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/**
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* Copyright (C) 2010 10gen Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "../pch.h"
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#include "dbtests.h"
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#include "../util/histogram.h"
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namespace mongo {
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using mongo::Histogram;
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class BoundariesInit {
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public:
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void run() {
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Histogram::Options opts;
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opts.numBuckets = 3;
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opts.bucketSize = 10;
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Histogram h( opts );
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ASSERT_EQUALS( h.getBucketsNum(), 3u );
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ASSERT_EQUALS( h.getCount( 0 ), 0u );
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ASSERT_EQUALS( h.getCount( 1 ), 0u );
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ASSERT_EQUALS( h.getCount( 2 ), 0u );
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ASSERT_EQUALS( h.getBoundary( 0 ), 10u );
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ASSERT_EQUALS( h.getBoundary( 1 ), 20u );
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ASSERT_EQUALS( h.getBoundary( 2 ), numeric_limits<uint32_t>::max() );
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}
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};
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class BoundariesExponential {
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public:
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void run() {
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Histogram::Options opts;
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opts.numBuckets = 4;
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opts.bucketSize = 125;
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opts.exponential = true;
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Histogram h( opts );
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ASSERT_EQUALS( h.getBoundary( 0 ), 125u );
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ASSERT_EQUALS( h.getBoundary( 1 ), 250u );
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ASSERT_EQUALS( h.getBoundary( 2 ), 500u );
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ASSERT_EQUALS( h.getBoundary( 3 ), numeric_limits<uint32_t>::max() );
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}
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};
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class BoundariesFind {
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public:
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void run() {
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Histogram::Options opts;
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opts.numBuckets = 3;
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opts.bucketSize = 10;
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Histogram h( opts );
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h.insert( 10 ); // end of first bucket
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h.insert( 15 ); // second bucket
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h.insert( 18 ); // second bucket
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ASSERT_EQUALS( h.getCount( 0 ), 1u );
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ASSERT_EQUALS( h.getCount( 1 ), 2u );
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ASSERT_EQUALS( h.getCount( 2 ), 0u );
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}
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};
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class HistogramSuite : public Suite {
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public:
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HistogramSuite() : Suite( "histogram" ) {}
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void setupTests() {
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add< BoundariesInit >();
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add< BoundariesExponential >();
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add< BoundariesFind >();
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// TODO: complete the test suite
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}
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} histogramSuite;
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} // anonymous namespace
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