Chris@131: 
Chris@131: #include "DistanceMetric.h"
Chris@131: 
Chris@131: #include <vector>
Chris@131: #include <iostream>
Chris@131: #include <cmath>
Chris@131: 
Chris@131: using namespace std;
Chris@131: 
Chris@131: #define BOOST_TEST_DYN_LINK
Chris@131: #define BOOST_TEST_MAIN
Chris@131: 
Chris@131: #include <boost/test/unit_test.hpp>
Chris@131: 
Chris@131: static vector<double> getTestFeature(double m)
Chris@131: {
Chris@131:     vector<double> f;
Chris@131:     double fd[] = { 0, 1, 2, 3 };
Chris@131:     for (int i = 0; i < 4; ++i) {
Chris@131: 	f.push_back(fd[i] * m);
Chris@131:     }
Chris@131:     return f;
Chris@131: }
Chris@131: 
Chris@131: BOOST_AUTO_TEST_SUITE(TestDistanceMetric)
Chris@131: 
Chris@131: BOOST_AUTO_TEST_CASE(nonorm)
Chris@131: {
Chris@143:     DistanceMetric::Parameters params;
Chris@143:     params.norm = DistanceMetric::NoDistanceNormalisation;
Chris@143:     DistanceMetric dm(params);
Chris@131:     vector<double>
Chris@131: 	e1 = getTestFeature(1),
Chris@131: 	e2 = getTestFeature(2),
Chris@131: 	e0 = getTestFeature(0);
Chris@131: 
Chris@146:     double noise = 1e-3 * 4;
Chris@146:     
Chris@146:     BOOST_CHECK_EQUAL(dm.calcDistance(e0, e0), 0.0 + noise);
Chris@146:     BOOST_CHECK_EQUAL(dm.calcDistance(e1, e0), 6.0 + noise);
Chris@146:     BOOST_CHECK_EQUAL(dm.calcDistance(e0, e1), 6.0 + noise);
Chris@146:     BOOST_CHECK_EQUAL(dm.calcDistance(e1, e1), 0.0 + noise);
Chris@146:     BOOST_CHECK_EQUAL(dm.calcDistance(e1, e2), 6.0 + noise);
Chris@146:     BOOST_CHECK_EQUAL(dm.calcDistance(e0, e2), 12.0 + noise);
Chris@133: }
Chris@133: 
Chris@133: BOOST_AUTO_TEST_CASE(sum)
Chris@133: {
Chris@143:     DistanceMetric::Parameters params;
Chris@143:     params.norm = DistanceMetric::NormaliseDistanceToSum;
Chris@143:     DistanceMetric dm(params);
Chris@133:     vector<double>
Chris@133: 	e1 = getTestFeature(1),
Chris@133: 	e2 = getTestFeature(2),
Chris@133: 	e0 = getTestFeature(0);
Chris@133: 
Chris@146:     double noise = 1e-3 * 4;
Chris@146:     
Chris@146:     BOOST_CHECK_EQUAL(dm.calcDistance(e0, e0), 1.0);
Chris@133:     BOOST_CHECK_EQUAL(dm.calcDistance(e1, e0), 1.0);
Chris@133:     BOOST_CHECK_EQUAL(dm.calcDistance(e0, e1), 1.0);
Chris@146:     BOOST_CHECK_EQUAL(dm.calcDistance(e1, e1), noise / (12.0 + noise));
Chris@146:     BOOST_CHECK_EQUAL(dm.calcDistance(e1, e2), (6.0 + noise) / (18.0 + noise));
Chris@133:     BOOST_CHECK_EQUAL(dm.calcDistance(e0, e2), 1.0);
Chris@131: }
Chris@131: 
Chris@131: BOOST_AUTO_TEST_SUITE_END()
Chris@131: 
Chris@131: 
Chris@131: