/**
 * Basic test for gdImageBrightness()
 */


#include "gd.h"
#include "gdtest.h"


static void test_brightness(int brightness);


int main()
{
    test_brightness(+100);
    test_brightness(-100);

    return gdNumFailures();
}


static void test_brightness(int brightness)
{
    gdImagePtr im;
    FILE *fp;
    char basename[256];
    char *path;

    fp = gdTestFileOpen2("gdimagebrightness", "basic.png");
    im = gdImageCreateFromPng(fp);
    fclose(fp);

    gdImageBrightness(im, brightness);

    sprintf(basename, "basic%+03d.png", brightness);
    path = gdTestFilePath2("gdimagebrightness", basename);
    gdAssertImageEqualsToFile(path, im);
    gdFree(path);

    gdImageDestroy(im);
}