mapnik/test/unit/imaging/image_set_pixel.cpp

#include "catch.hpp"

// mapnik
#include <mapnik/image.hpp>
#include <mapnik/image_util.hpp>

TEST_CASE("image set_pixel")
{
    SECTION("test gray32")
    {
        mapnik::image_gray32 im(256, 256);
        mapnik::set_pixel(im, 0, 0, -1);
        auto pixel = mapnik::get_pixel<mapnik::image_gray32::pixel_type>(im, 0, 0);
        INFO(pixel);
        CHECK(pixel == 0);
    }

    SECTION("test gray8s")
    {
        mapnik::image_gray8s im(256, 256);
        mapnik::set_pixel(im, 0, 0, std::numeric_limits<mapnik::image_gray8s::pixel_type>::max() + 1);
        auto pixel = mapnik::get_pixel<mapnik::image_gray8s::pixel_type>(im, 0, 0);
        INFO(pixel);
        CHECK((int)pixel == (int)std::numeric_limits<mapnik::image_gray8s::pixel_type>::max());
    }
}