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 "2geom/isnan.h"
12 class NrPointFnsTest : public CxxTest::TestSuite
13 {
14 public:
15 NrPointFnsTest() :
16 setupValid(true),
17 p3n4( 3.0, -4.0 ),
18 p0( 0.0, 0.0 ),
19 small( pow( 2.0, -1070 ) ),
20 inf( 1e400 ),
21 nan( inf - inf ),
22 small_left( -small, 0.0 ),
23 small_n3_4( -3.0 * small, 4.0 * small ),
24 part_nan( 3., nan ),
25 inf_left( -inf, 5.0 )
26 {
27 TS_ASSERT( IS_NAN(nan) );
28 TS_ASSERT( !IS_NAN(small) );
30 setupValid &= IS_NAN(nan);
31 setupValid &= !IS_NAN(small);
32 }
33 virtual ~NrPointFnsTest() {}
35 // createSuite and destroySuite get us per-suite setup and teardown
36 // without us having to worry about static initialization order, etc.
37 static NrPointFnsTest *createSuite() { return new NrPointFnsTest(); }
38 static void destroySuite( NrPointFnsTest *suite ) { delete suite; }
40 // Called before each test in this suite
41 void setUp()
42 {
43 TS_ASSERT( setupValid );
44 }
46 bool setupValid;
47 NR::Point const p3n4;
48 NR::Point const p0;
49 double const small;
50 double const inf;
51 double const nan;
53 NR::Point const small_left;
54 NR::Point const small_n3_4;
55 NR::Point const part_nan;
56 NR::Point const inf_left;
59 void testL1(void)
60 {
61 TS_ASSERT_EQUALS( NR::L1(p0), 0.0 );
62 TS_ASSERT_EQUALS( NR::L1(p3n4), 7.0 );
63 TS_ASSERT_EQUALS( NR::L1(small_left), small );
64 TS_ASSERT_EQUALS( NR::L1(inf_left), inf );
65 TS_ASSERT_EQUALS( NR::L1(small_n3_4), 7.0 * small );
66 TS_ASSERT(IS_NAN(NR::L1(part_nan)));
67 }
69 void testL2(void)
70 {
71 TS_ASSERT_EQUALS( NR::L2(p0), 0.0 );
72 TS_ASSERT_EQUALS( NR::L2(p3n4), 5.0 );
73 TS_ASSERT_EQUALS( NR::L2(small_left), small );
74 TS_ASSERT_EQUALS( NR::L2(inf_left), inf );
75 TS_ASSERT_EQUALS( NR::L2(small_n3_4), 5.0 * small );
76 TS_ASSERT( IS_NAN(NR::L2(part_nan)) );
77 }
79 void testLInfty(void)
80 {
81 TS_ASSERT_EQUALS( NR::LInfty(p0), 0.0 );
82 TS_ASSERT_EQUALS( NR::LInfty(p3n4), 4.0 );
83 TS_ASSERT_EQUALS( NR::LInfty(small_left), small );
84 TS_ASSERT_EQUALS( NR::LInfty(inf_left), inf );
85 TS_ASSERT_EQUALS( NR::LInfty(small_n3_4), 4.0 * small );
86 TS_ASSERT( IS_NAN(NR::LInfty(part_nan)) );
87 }
89 void testIsZero(void)
90 {
91 TS_ASSERT( NR::is_zero(p0) );
92 TS_ASSERT( !NR::is_zero(p3n4) );
93 TS_ASSERT( !NR::is_zero(small_left) );
94 TS_ASSERT( !NR::is_zero(inf_left) );
95 TS_ASSERT( !NR::is_zero(small_n3_4) );
96 TS_ASSERT( !NR::is_zero(part_nan) );
97 }
99 void testAtan2(void)
100 {
101 TS_ASSERT_EQUALS( NR::atan2(p3n4), atan2(-4.0, 3.0) );
102 TS_ASSERT_EQUALS( NR::atan2(small_left), atan2(0.0, -1.0) );
103 TS_ASSERT_EQUALS( NR::atan2(small_n3_4), atan2(4.0, -3.0) );
104 }
106 void testUnitVector(void)
107 {
108 TS_ASSERT_EQUALS( NR::unit_vector(p3n4), NR::Point(.6, -0.8) );
109 TS_ASSERT_EQUALS( NR::unit_vector(small_left), NR::Point(-1.0, 0.0) );
110 TS_ASSERT_EQUALS( NR::unit_vector(small_n3_4), NR::Point(-.6, 0.8) );
111 }
113 void testIsUnitVector(void)
114 {
115 TS_ASSERT( !NR::is_unit_vector(p3n4) );
116 TS_ASSERT( !NR::is_unit_vector(small_left) );
117 TS_ASSERT( !NR::is_unit_vector(small_n3_4) );
118 TS_ASSERT( !NR::is_unit_vector(part_nan) );
119 TS_ASSERT( !NR::is_unit_vector(inf_left) );
120 TS_ASSERT( !NR::is_unit_vector(NR::Point(.5, 0.5)) );
121 TS_ASSERT( NR::is_unit_vector(NR::Point(.6, -0.8)) );
122 TS_ASSERT( NR::is_unit_vector(NR::Point(-.6, 0.8)) );
123 TS_ASSERT( NR::is_unit_vector(NR::Point(-1.0, 0.0)) );
124 TS_ASSERT( NR::is_unit_vector(NR::Point(1.0, 0.0)) );
125 TS_ASSERT( NR::is_unit_vector(NR::Point(0.0, -1.0)) );
126 TS_ASSERT( NR::is_unit_vector(NR::Point(0.0, 1.0)) );
127 }
128 };
130 /*
131 Local Variables:
132 mode:c++
133 c-file-style:"stroustrup"
134 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
135 indent-tabs-mode:nil
136 fill-column:99
137 End:
138 */
139 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :