File content as of revision 13:bb9669053eb3:

#include "TestUtility.hpp"
#include "Utility.hpp"

#include <cassert>

namespace utility
{
    void run_all_tests()
    {
        test_is_almost_equal();
        test_degree_from_radian();
        test_wrap_angle();
        test_update_bit();
        test_update_bit_for_values_greater_than_one_byte();
        test_update_bits();
    }
    
    void test_is_almost_equal()
    {
        assert(is_almost_equal(0, 0, 0.01));
        assert(is_almost_equal(0.50, 0.51, 0.02));
        assert(!is_almost_equal(0.50, 0.52, 0.01));
        assert(!is_almost_equal(0, 0.50, 0.1));
    }
    
    void test_degree_from_radian()
    {
        const double tolerance = 0.05;
        assert(is_almost_equal(0, degree_from_radian(0.0), tolerance));
        assert(is_almost_equal(90, degree_from_radian(PI/2.0), tolerance));
        assert(is_almost_equal(180, degree_from_radian(PI), tolerance));
        assert(is_almost_equal(270, degree_from_radian(3.0*PI/2.0), tolerance));
        assert(is_almost_equal(0, degree_from_radian(2.0*PI), tolerance) || is_almost_equal(360, degree_from_radian(2.0*PI), tolerance));
        assert(is_almost_equal(270, degree_from_radian(-PI/2.0), tolerance));
    }
    
    void test_wrap_angle()
    {
        const double tolerance = 0.05;
        assert(is_almost_equal(0, wrap_angle(0.0), tolerance));
        assert(is_almost_equal(90, wrap_angle(90), tolerance));
        assert(is_almost_equal(180, wrap_angle(180), tolerance));
        assert(is_almost_equal(0, wrap_angle(360), tolerance) || is_almost_equal(360, wrap_angle(360), tolerance));
        assert(is_almost_equal(90, wrap_angle(360+90), tolerance));
        assert(is_almost_equal(270, wrap_angle(360-90), tolerance));
    }
    
    void test_update_bit()
    {
        assert(4 == sizeof(int));
        assert(0x00 == update_bit(0x00, 0, 0));
        assert(0x01 == update_bit(0x00, 0, 1));
        assert(0x00 == update_bit(0x01, 0, 0));
        assert(0x05 == update_bit(0x07, 1, 0));
    }
    
    void test_update_bit_for_values_greater_than_one_byte()
    {
        assert(0x7FFF == update_bit(0xFFFF, 15, 0));
        assert(0x7FFFFFFF == update_bit(0xFFFFFFFF, 31, 0));
    }
    
    void test_update_bits()
    {
        assert(0x0F == update_bits(0x00, 0, 3, 0x0F));
        assert(0x1E == update_bits(0x00, 1, 4, 0x0F));
    }
}