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FreeParametersTests.cpp
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1 // This file is part of the Acts project.
2 //
3 // Copyright (C) 2019 CERN for the benefit of the Acts project
4 //
5 // This Source Code Form is subject to the terms of the Mozilla Public
6 // License, v. 2.0. If a copy of the MPL was not distributed with this
7 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 
9 #include <boost/test/unit_test.hpp>
10 
11 #include "Acts/EventData/NeutralParameters.hpp"
12 #include "Acts/EventData/TrackParameters.hpp"
13 #include "Acts/Geometry/GeometryContext.hpp"
14 #include "Acts/Tests/CommonHelpers/FloatComparisons.hpp"
15 #include "Acts/Utilities/Definitions.hpp"
16 
17 namespace Acts {
18 namespace Test {
19 
22 BOOST_AUTO_TEST_CASE(free_initialization) {
23  Vector3D pos(0., 1., 2.);
24  double t = 3.;
25  Vector3D dir(4., 5., 6.);
26  double qop = 7.;
27 
28  FreeVector params;
29  params << pos.x(), pos.y(), pos.z(), t, dir.x(), dir.y(), dir.z(), qop;
30 
31  std::optional<FreeSymMatrix> cov = std::nullopt;
32 
33  // Test if the object can be created w/o covariance
34  FreeParameters fpwoCov(cov, params);
35  BOOST_TEST(!fpwoCov.covariance().has_value());
36  CHECK_CLOSE_ABS(fpwoCov.parameters(), params, 1e-6);
37 
38  // Test if the object can be create with covariance
39  *cov << 1., 0., 0., 0., 0., 0., 0., 0., 0., 2., 0., 0., 0., 0., 0., 0., 0.,
40  0., 3., 0., 0., 0., 0., 0., 0., 0., 0., 4., 0., 0., 0., 0., 0., 0., 0.,
41  0., 5., 0., 0., 0., 0., 0., 0., 0., 0., 6., 0., 0., 0., 0., 0., 0., 0.,
42  0., 7., 0., 0., 0., 0., 0., 0., 0., 0., 8.;
43  std::optional<FreeSymMatrix> covCpy = *cov;
44 
45  FreeParameters fp(covCpy, params);
46  CHECK_CLOSE_COVARIANCE(*fp.covariance(), *cov, 1e-6);
47  CHECK_CLOSE_ABS(fp.parameters(), params, 1e-6);
48 
49  // Test == comparison
50  BOOST_TEST(fp == fp);
51  BOOST_TEST(fp != fpwoCov);
52 
53  FreeParameters fpCopyConstr(fp);
54  BOOST_TEST(fpCopyConstr == fp);
55 
56  covCpy = *cov;
57  FreeParameters fpMoveConstr(FreeParameters(covCpy, params));
58  BOOST_TEST(fpMoveConstr == fp);
59 
60  // Test copy assignment
61  FreeParameters fpCopyAssignment = fp;
62  BOOST_TEST(fpCopyAssignment == fp);
63 
64  // Test move assignment
65  covCpy = *cov;
66  FreeParameters fpMoveAssignment = FreeParameters(covCpy, params);
67  BOOST_TEST(fpMoveAssignment == fp);
68 
70 
71  // Test if the object can be created w/o covariance
72  NeutralFreeParameters nfpwoCov(std::nullopt, params);
73  BOOST_TEST(!nfpwoCov.covariance().has_value());
74  CHECK_CLOSE_ABS(nfpwoCov.parameters(), params, 1e-6);
75 
76  covCpy = *cov;
77  NeutralFreeParameters nfp(covCpy, params);
78  CHECK_CLOSE_COVARIANCE(*nfp.covariance(), *cov, 1e-6);
79  CHECK_CLOSE_ABS(nfp.parameters(), params, 1e-6);
80 
81  NeutralFreeParameters nfpCopyConstr(nfp);
82  BOOST_TEST(nfpCopyConstr == nfp);
83 
84  covCpy = *cov;
85  NeutralFreeParameters nfpMoveConstr(NeutralFreeParameters(covCpy, params));
86  BOOST_TEST(nfpMoveConstr == nfp);
87 
88  // Test copy assignment
89  NeutralFreeParameters nfpCopyAssignment = nfp;
90  BOOST_TEST(nfpCopyAssignment == nfp);
91 
92  // Test move assignment
93  covCpy = *cov;
94  NeutralFreeParameters nfpMoveAssignment =
95  NeutralFreeParameters(covCpy, params);
96  BOOST_TEST(nfpMoveAssignment == nfp);
97 
99 
100  // Test getter of single elements
101  CHECK_CLOSE_ABS(fp.get<0>(), pos.x(), 1e-6);
102  CHECK_CLOSE_ABS(fp.get<1>(), pos.y(), 1e-6);
103  CHECK_CLOSE_ABS(fp.get<2>(), pos.z(), 1e-6);
104  CHECK_CLOSE_ABS(fp.get<3>(), t, 1e-6);
105  CHECK_CLOSE_ABS(fp.get<4>(), dir.x(), 1e-6);
106  CHECK_CLOSE_ABS(fp.get<5>(), dir.y(), 1e-6);
107  CHECK_CLOSE_ABS(fp.get<6>(), dir.z(), 1e-6);
108  CHECK_CLOSE_ABS(fp.get<7>(), qop, 1e-6);
109 
110  // Test getter of uncertainties
111  CHECK_CLOSE_ABS(fp.uncertainty<0>(), std::sqrt((*cov)(0, 0)), 1e-6);
112  CHECK_CLOSE_ABS(fp.uncertainty<1>(), std::sqrt((*cov)(1, 1)), 1e-6);
113  CHECK_CLOSE_ABS(fp.uncertainty<2>(), std::sqrt((*cov)(2, 2)), 1e-6);
114  CHECK_CLOSE_ABS(fp.uncertainty<3>(), std::sqrt((*cov)(3, 3)), 1e-6);
115  CHECK_CLOSE_ABS(fp.uncertainty<4>(), std::sqrt((*cov)(4, 4)), 1e-6);
116  CHECK_CLOSE_ABS(fp.uncertainty<5>(), std::sqrt((*cov)(5, 5)), 1e-6);
117  CHECK_CLOSE_ABS(fp.uncertainty<6>(), std::sqrt((*cov)(6, 6)), 1e-6);
118  CHECK_CLOSE_ABS(fp.uncertainty<7>(), std::sqrt((*cov)(7, 7)), 1e-6);
119 
120  // Test getter of parts of the parameters by their meaning
121  CHECK_CLOSE_ABS(fp.position(), pos, 1e-6);
122  CHECK_CLOSE_ABS(fp.momentum(), dir / qop, 1e-6);
123  CHECK_CLOSE_ABS(fp.charge(), +1., 1e-6);
124  BOOST_TEST(nfp.charge() == 0.);
125  CHECK_CLOSE_ABS(fp.time(), t, 1e-6);
126 
127  // Test setters
128  GeometryContext dummy;
129  fp.set<0>(dummy, 8.);
130  fp.set<1>(dummy, 9.);
131  fp.set<2>(dummy, 10.);
132  fp.set<3>(dummy, 11.);
133  fp.set<4>(dummy, 12.);
134  fp.set<5>(dummy, 13.);
135  fp.set<6>(dummy, 14.);
136  fp.set<7>(dummy, 15.);
137  CHECK_CLOSE_ABS(fp.get<0>(), 8., 1e-6);
138  CHECK_CLOSE_ABS(fp.get<1>(), 9., 1e-6);
139  CHECK_CLOSE_ABS(fp.get<2>(), 10., 1e-6);
140  CHECK_CLOSE_ABS(fp.get<3>(), 11., 1e-6);
141  CHECK_CLOSE_ABS(fp.get<4>(), 12., 1e-6);
142  CHECK_CLOSE_ABS(fp.get<5>(), 13., 1e-6);
143  CHECK_CLOSE_ABS(fp.get<6>(), 14., 1e-6);
144  CHECK_CLOSE_ABS(fp.get<7>(), 15., 1e-6);
145 }
146 } // namespace Test
147 } // namespace Acts