#include <cxxtest/TestSuite.h>

#include <cmath>
#include <glib/gmacros.h>

#include <libnr/nr-rotate-fns.h>

class NrRotateFnsTest : public CxxTest::TestSuite
{
public:

    NrRotateFnsTest()
    {
    }
    virtual ~NrRotateFnsTest() {}

// createSuite and destroySuite get us per-suite setup and teardown
// without us having to worry about static initialization order, etc.
    static NrRotateFnsTest *createSuite() { return new NrRotateFnsTest(); }
    static void destroySuite( NrRotateFnsTest *suite ) { delete suite; }



    void testRotateDegrees(void)
    {
        double const d[] = {
            0, 90, 180, 270, 360, 45, 45.01, 44.99, 134, 135, 136, 314, 315, 317, 359, 361
        };
        for ( unsigned i = 0; i < G_N_ELEMENTS(d); ++i ) {
            double const degrees = d[i];
            NR::rotate const rot(rotate_degrees(degrees));
            NR::rotate const rot_approx( M_PI * ( degrees / 180. ) );
            TS_ASSERT( rotate_equalp(rot, rot_approx, 1e-12) );

            NR::rotate const rot_inv(rotate_degrees(-degrees));
            NR::rotate const rot_compl(rotate_degrees(360 - degrees));
            TS_ASSERT( rotate_equalp(rot_inv, rot_compl, 1e-12) );

            TS_ASSERT( !rotate_equalp(rot, rotate_degrees(degrees + 1), 1e-5) );
        }
    }

};

/*
  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 :