149 lines
3.9 KiB
C++
149 lines
3.9 KiB
C++
/*
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* This file is part of the Owl Positioning System (OwlPS) project.
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* It is subject to the copyright notice and license terms in the
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* COPYRIGHT.t2t file found in the top-level directory of this
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* distribution and at
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* https://code.lm7.fr/mcy/owlps/src/master/COPYRIGHT.t2t
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* No part of the OwlPS Project, including this file, may be copied,
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* modified, propagated, or distributed except according to the terms
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* contained in the COPYRIGHT.t2t file; the COPYRIGHT.t2t file must be
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* distributed along with this file, either separately or by replacing
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* this notice by the COPYRIGHT.t2t file's contents.
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*/
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#include <cxxtest/TestSuite.h>
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#include "measurement.hh"
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class Measurement_test: public CxxTest::TestSuite
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{
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public:
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void test_constructors(void)
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{
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// Default constructor
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Measurement m00 ;
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std::map<pkt_id_t, ss_t> vi1 ;
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Measurement m01(nullptr) ;
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m01.add_ss_list(vi1) ;
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TS_ASSERT_EQUALS(m00, m01) ;
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// Copy constructor
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CapturePoint ap1 ;
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Measurement m1(&ap1) ;
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Measurement m2(m1) ;
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TS_ASSERT_EQUALS(m1, m2) ;
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}
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void test_accessors(void)
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{
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// Simple read accessors
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CapturePoint ap1 ;
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std::map<pkt_id_t, ss_t> vi1 ;
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Measurement m1(&ap1) ;
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m1.add_ss_list(vi1) ;
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TS_ASSERT_EQUALS(m1.get_cp(), &ap1) ;
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TS_ASSERT_EQUALS(m1.get_nb_ss(), 0) ;
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TS_ASSERT_EQUALS(m1.get_average_dbm(), 0) ;
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// Write & read accessors
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CapturePoint ap2 ;
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m1.set_cp(&ap2) ;
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TS_ASSERT_EQUALS(m1.get_cp(), &ap2) ;
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m1.add_ss(1, -33) ;
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m1.add_ss(2, -78) ;
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m1.add_ss(3, -21) ;
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TS_ASSERT_EQUALS(m1.get_nb_ss(), 3) ;
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TS_ASSERT_EQUALS(m1.get_ss(1), -33) ;
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TS_ASSERT_EQUALS(m1.get_ss(2), -78) ;
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TS_ASSERT_EQUALS(m1.get_ss(3), -21) ;
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/* *** Average computation ***
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*
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* We need to convert all dBm values into mW, compute the average
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* and convert mW back to dBm.
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* (1) P[mW] = 10^(P[dBm] / 10)
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* (2) P[dBm] = 10 log10(P[mW])
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*
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* So for the dBm values -33, -78, -21, we have:
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* -33 dBm = 10^(-33/10) mW = 0.0005012 mW
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* -78 dBm = 10^(-78/10) mW = 0.00000001585 mW
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* -21 dBm = 10^(-21/10) mW = 0.0079433 mW
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* And:
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* ( 10^(-33/10) + 10^(-78/10) + 10^(-21/10) ) / 3 = 0.0028148 mW
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* Back to dBm:
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* 0.0028148 mW = -25.505481 dBm
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*/
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TS_ASSERT_DELTA(m1.get_average_dbm(), -25.505481, 0.0001) ;
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Measurement m2(&ap2) ;
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std::map<pkt_id_t, ss_t> vi2 ;
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vi2[3] = -54 ;
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vi2[4] = -1 ;
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m2.add_ss_list(vi2) ;
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TS_ASSERT_EQUALS(m2.get_nb_ss(), vi2.size()) ;
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TS_ASSERT_EQUALS(m2.get_ss(3), -54) ;
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TS_ASSERT_EQUALS(m2.get_ss(4), -1) ;
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TS_ASSERT_DELTA(m2.get_average_dbm(), -4.0102782, 0.0001) ;
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m1.merge(m2) ;
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TS_ASSERT_EQUALS(m1.get_nb_ss(), 4) ;
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TS_ASSERT_EQUALS(m1.get_ss(1), -33) ;
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TS_ASSERT_EQUALS(m1.get_ss(2), -78) ;
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TS_ASSERT_EQUALS(m1.get_ss(3), -54) ;
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TS_ASSERT_EQUALS(m1.get_ss(4), -1) ;
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m1.clear() ;
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Measurement m3 ;
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TS_ASSERT_EQUALS(m1, m3) ;
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}
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void test_ss_square_distance(void)
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{
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float ss = -78 ;
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Measurement measurement1, measurement2 ;
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measurement1.add_ss(1, ss) ;
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measurement2.add_ss(1, ss) ;
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TS_ASSERT_EQUALS(0, measurement1.ss_square_distance(measurement2)) ;
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TS_ASSERT_EQUALS(0, measurement1.ss_square_distance(ss)) ;
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/* Distance computation:
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* (-42 - (-78))^2 == 1296
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*/
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ss = -42 ;
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measurement2.clear() ;
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measurement2.add_ss(1, ss) ;
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TS_ASSERT_EQUALS(1296, measurement1.ss_square_distance(measurement2)) ;
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TS_ASSERT_EQUALS(1296, measurement1.ss_square_distance(ss)) ;
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}
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void test_operators(void)
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{
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// ==
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CapturePoint ap1 ;
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Measurement m1(&ap1) ;
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Measurement m2(&ap1) ;
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TS_ASSERT_EQUALS(m1, m2) ;
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// !=
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CapturePoint ap2 ;
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Measurement m3(&ap2) ;
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TS_ASSERT(m1 != m3) ;
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// =
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m2 = m3 ;
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TS_ASSERT_EQUALS(m2, m3) ;
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// bool
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TS_ASSERT(m1) ;
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Measurement m4 ;
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TS_ASSERT(! m4) ;
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}
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} ;
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