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// nr-point-fns-test.h
#include <cxxtest/TestSuite.h>
#include <cassert>
#include <cmath>
#include <glib/gmacros.h>
#include <stdlib.h>
#include "libnr/nr-point-fns.h"
#include "isnan.h"
using NR::Point;
class NrPointFnsTest : public CxxTest::TestSuite
{
public:
NrPointFnsTest() :
setupValid(true),
p3n4( 3.0, -4.0 ),
p0( 0.0, 0.0 ),
small( pow( 2.0, -1070 ) ),
inf( 1e400 ),
nan( inf - inf ),
small_left( -small, 0.0 ),
small_n3_4( -3.0 * small, 4.0 * small ),
part_nan( 3., nan ),
inf_left( -inf, 5.0 )
{
TS_ASSERT( isNaN(nan) );
TS_ASSERT( !isNaN(small) );
setupValid &= isNaN(nan);
setupValid &= !isNaN(small);
}
virtual ~NrPointFnsTest() {}
// createSuite and destroySuite get us per-suite setup and teardown
// without us having to worry about static initialization order, etc.
static NrPointFnsTest *createSuite() { return new NrPointFnsTest(); }
static void destroySuite( NrPointFnsTest *suite ) { delete suite; }
// Called before each test in this suite
void setUp()
{
TS_ASSERT( setupValid );
}
bool setupValid;
Point const p3n4;
Point const p0;
double const small;
double const inf;
double const nan;
Point const small_left;
Point const small_n3_4;
Point const part_nan;
Point const inf_left;
void testL1(void)
{
TS_ASSERT_EQUALS( NR::L1(p0), 0.0 );
TS_ASSERT_EQUALS( NR::L1(p3n4), 7.0 );
TS_ASSERT_EQUALS( NR::L1(small_left), small );
TS_ASSERT_EQUALS( NR::L1(inf_left), inf );
TS_ASSERT_EQUALS( NR::L1(small_n3_4), 7.0 * small );
TS_ASSERT(isNaN(NR::L1(part_nan)));
}
void testL2(void)
{
TS_ASSERT_EQUALS( NR::L2(p0), 0.0 );
TS_ASSERT_EQUALS( NR::L2(p3n4), 5.0 );
TS_ASSERT_EQUALS( NR::L2(small_left), small );
TS_ASSERT_EQUALS( NR::L2(inf_left), inf );
TS_ASSERT_EQUALS( NR::L2(small_n3_4), 5.0 * small );
TS_ASSERT( isNaN(NR::L2(part_nan)) );
}
void testLInfty(void)
{
TS_ASSERT_EQUALS( NR::LInfty(p0), 0.0 );
TS_ASSERT_EQUALS( NR::LInfty(p3n4), 4.0 );
TS_ASSERT_EQUALS( NR::LInfty(small_left), small );
TS_ASSERT_EQUALS( NR::LInfty(inf_left), inf );
TS_ASSERT_EQUALS( NR::LInfty(small_n3_4), 4.0 * small );
TS_ASSERT( isNaN(NR::LInfty(part_nan)) );
}
void testIsZero(void)
{
TS_ASSERT( NR::is_zero(p0) );
TS_ASSERT( !NR::is_zero(p3n4) );
TS_ASSERT( !NR::is_zero(small_left) );
TS_ASSERT( !NR::is_zero(inf_left) );
TS_ASSERT( !NR::is_zero(small_n3_4) );
TS_ASSERT( !NR::is_zero(part_nan) );
}
void testAtan2(void)
{
TS_ASSERT_EQUALS( NR::atan2(p3n4), atan2(-4.0, 3.0) );
TS_ASSERT_EQUALS( NR::atan2(small_left), atan2(0.0, -1.0) );
TS_ASSERT_EQUALS( NR::atan2(small_n3_4), atan2(4.0, -3.0) );
}
void testUnitVector(void)
{
TS_ASSERT_EQUALS( NR::unit_vector(p3n4), Point(.6, -0.8) );
TS_ASSERT_EQUALS( NR::unit_vector(small_left), Point(-1.0, 0.0) );
TS_ASSERT_EQUALS( NR::unit_vector(small_n3_4), Point(-.6, 0.8) );
}
void testIsUnitVector(void)
{
TS_ASSERT( !NR::is_unit_vector(p3n4) );
TS_ASSERT( !NR::is_unit_vector(small_left) );
TS_ASSERT( !NR::is_unit_vector(small_n3_4) );
TS_ASSERT( !NR::is_unit_vector(part_nan) );
TS_ASSERT( !NR::is_unit_vector(inf_left) );
TS_ASSERT( !NR::is_unit_vector(Point(.5, 0.5)) );
TS_ASSERT( NR::is_unit_vector(Point(.6, -0.8)) );
TS_ASSERT( NR::is_unit_vector(Point(-.6, 0.8)) );
TS_ASSERT( NR::is_unit_vector(Point(-1.0, 0.0)) );
TS_ASSERT( NR::is_unit_vector(Point(1.0, 0.0)) );
TS_ASSERT( NR::is_unit_vector(Point(0.0, -1.0)) );
TS_ASSERT( NR::is_unit_vector(Point(0.0, 1.0)) );
}
};
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :
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