// vtest build: !docker-ubuntu-musl // needs GL/gl.h
module gg

import os

const background_path = os.join_path(@VEXEROOT, 'examples/flappylearning/assets/img/background.png')

fn test_load_image_loads_supported_file_contents() {
    img := load_image(background_path)!
    assert img.width > 0
    assert img.height > 0
    assert img.nr_channels == 4
    assert img.path == background_path
}

fn test_load_image_returns_error_for_unsupported_file_contents() {
    file := os.join_path(os.vtmp_dir(), 'gg_unsupported_image_${os.getpid()}.jpg')
    os.write_file(file, 'not an image') or { panic(err) }
    defer {
        os.rm(file) or {}
    }
    load_image(file) or {
        assert err.msg().contains('stbi_image failed to load')
        return
    }
    assert false
}