#include <stdio.h>

#include "gd.h"

#include "gdtest.h"

int main() {

	gdImagePtr im, imres, imexp;

	FILE *fp;

	void *pjpeg;

	unsigned int status = 0;

	int size = 0;

	fp = gdTestFileOpen("jpeg/github_bug_18.png");

	im = gdImageCreateFromPng(fp);

	fclose(fp);

	if (im == NULL) {

		gdTestErrorMsg("gdImageCreateFromJpeg failed.\n");

		return 1;

	}

	pjpeg = gdImageJpegPtr(im, &size, 100);

	if (pjpeg == NULL) {

		status = 1;

		gdTestErrorMsg("p is null\n");

		goto door2;

	}

	if (size <= 0) {

		status = 1;

		gdTestErrorMsg("size is non-positive\n");

		goto door2;

	}

	imres = gdImageCreateFromJpegPtr(size, pjpeg);

	if (imres == NULL) {

		status = 1;

		goto door2;

	}

	fp = gdTestFileOpen("jpeg/github_bug_18_exp.jpeg");

	imexp = gdImageCreateFromJpeg(fp);

	if (imexp == NULL) {

		fclose(fp);

		status = 1;

		goto door1;

	}

	if (gdTestImageCompareToImage("jpeg/github_bug_18.png", __LINE__, __FILE__, imexp, imres) != 1) {

		status = 1;

	}

	gdImageDestroy(imexp);

door1:

	gdImageDestroy(imres);

door2:

	gdFree(pjpeg);

	gdImageDestroy(im);

	return status;

}