1 // nr-point-fns-test.h
2 #include <cxxtest/TestSuite.h>
4 #include <cassert>
5 #include <cmath>
6 #include <glib/gmacros.h>
7 #include <stdlib.h>
9 #include "libnr/nr-point-fns.h"
10 #include "isnan.h"
12 using NR::Point;
14 class NrPointFnsTest : public CxxTest::TestSuite
15 {
16 public:
17 NrPointFnsTest() :
18 setupValid(true),
19 p3n4( 3.0, -4.0 ),
20 p0( 0.0, 0.0 ),
21 small( pow( 2.0, -1070 ) ),
22 inf( 1e400 ),
23 nan( inf - inf ),
24 small_left( -small, 0.0 ),
25 small_n3_4( -3.0 * small, 4.0 * small ),
26 part_nan( 3., nan ),
27 inf_left( -inf, 5.0 )
28 {
29 TS_ASSERT( isNaN(nan) );
30 TS_ASSERT( !isNaN(small) );
32 setupValid &= isNaN(nan);
33 setupValid &= !isNaN(small);
34 }
35 virtual ~NrPointFnsTest() {}
37 // createSuite and destroySuite get us per-suite setup and teardown
38 // without us having to worry about static initialization order, etc.
39 static NrPointFnsTest *createSuite() { return new NrPointFnsTest(); }
40 static void destroySuite( NrPointFnsTest *suite ) { delete suite; }
42 // Called before each test in this suite
43 void setUp()
44 {
45 TS_ASSERT( setupValid );
46 }
48 bool setupValid;
49 Point const p3n4;
50 Point const p0;
51 double const small;
52 double const inf;
53 double const nan;
55 Point const small_left;
56 Point const small_n3_4;
57 Point const part_nan;
58 Point const inf_left;
61 void testL1(void)
62 {
63 TS_ASSERT_EQUALS( NR::L1(p0), 0.0 );
64 TS_ASSERT_EQUALS( NR::L1(p3n4), 7.0 );
65 TS_ASSERT_EQUALS( NR::L1(small_left), small );
66 TS_ASSERT_EQUALS( NR::L1(inf_left), inf );
67 TS_ASSERT_EQUALS( NR::L1(small_n3_4), 7.0 * small );
68 TS_ASSERT(isNaN(NR::L1(part_nan)));
69 }
71 void testL2(void)
72 {
73 TS_ASSERT_EQUALS( NR::L2(p0), 0.0 );
74 TS_ASSERT_EQUALS( NR::L2(p3n4), 5.0 );
75 TS_ASSERT_EQUALS( NR::L2(small_left), small );
76 TS_ASSERT_EQUALS( NR::L2(inf_left), inf );
77 TS_ASSERT_EQUALS( NR::L2(small_n3_4), 5.0 * small );
78 TS_ASSERT( isNaN(NR::L2(part_nan)) );
79 }
81 void testLInfty(void)
82 {
83 TS_ASSERT_EQUALS( NR::LInfty(p0), 0.0 );
84 TS_ASSERT_EQUALS( NR::LInfty(p3n4), 4.0 );
85 TS_ASSERT_EQUALS( NR::LInfty(small_left), small );
86 TS_ASSERT_EQUALS( NR::LInfty(inf_left), inf );
87 TS_ASSERT_EQUALS( NR::LInfty(small_n3_4), 4.0 * small );
88 TS_ASSERT( isNaN(NR::LInfty(part_nan)) );
89 }
91 void testIsZero(void)
92 {
93 TS_ASSERT( NR::is_zero(p0) );
94 TS_ASSERT( !NR::is_zero(p3n4) );
95 TS_ASSERT( !NR::is_zero(small_left) );
96 TS_ASSERT( !NR::is_zero(inf_left) );
97 TS_ASSERT( !NR::is_zero(small_n3_4) );
98 TS_ASSERT( !NR::is_zero(part_nan) );
99 }
101 void testAtan2(void)
102 {
103 TS_ASSERT_EQUALS( NR::atan2(p3n4), atan2(-4.0, 3.0) );
104 TS_ASSERT_EQUALS( NR::atan2(small_left), atan2(0.0, -1.0) );
105 TS_ASSERT_EQUALS( NR::atan2(small_n3_4), atan2(4.0, -3.0) );
106 }
108 void testUnitVector(void)
109 {
110 TS_ASSERT_EQUALS( NR::unit_vector(p3n4), Point(.6, -0.8) );
111 TS_ASSERT_EQUALS( NR::unit_vector(small_left), Point(-1.0, 0.0) );
112 TS_ASSERT_EQUALS( NR::unit_vector(small_n3_4), Point(-.6, 0.8) );
113 }
115 void testIsUnitVector(void)
116 {
117 TS_ASSERT( !NR::is_unit_vector(p3n4) );
118 TS_ASSERT( !NR::is_unit_vector(small_left) );
119 TS_ASSERT( !NR::is_unit_vector(small_n3_4) );
120 TS_ASSERT( !NR::is_unit_vector(part_nan) );
121 TS_ASSERT( !NR::is_unit_vector(inf_left) );
122 TS_ASSERT( !NR::is_unit_vector(Point(.5, 0.5)) );
123 TS_ASSERT( NR::is_unit_vector(Point(.6, -0.8)) );
124 TS_ASSERT( NR::is_unit_vector(Point(-.6, 0.8)) );
125 TS_ASSERT( NR::is_unit_vector(Point(-1.0, 0.0)) );
126 TS_ASSERT( NR::is_unit_vector(Point(1.0, 0.0)) );
127 TS_ASSERT( NR::is_unit_vector(Point(0.0, -1.0)) );
128 TS_ASSERT( NR::is_unit_vector(Point(0.0, 1.0)) );
129 }
130 };
132 /*
133 Local Variables:
134 mode:c++
135 c-file-style:"stroustrup"
136 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
137 indent-tabs-mode:nil
138 fill-column:99
139 End:
140 */
141 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :