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/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
/*
* Copyright 2010 Andrea Canciani
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Author: Andrea Canciani <ranma42@gmail.com>
*/
#include "cairo-test.h"
#include <float.h>
#define SIZE 8
/*
cairo_arc can hang in an infinite loop if given huge (so big that
adding/subtracting 4*M_PI to them doesn't change the value because
of floating point rounding).
The purpose of this test is to check that cairo doesn't hang or crash.
*/
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
/* Check if the code that guarantees start <= end hangs */
cairo_arc (cr, 0, 0, 1, 1024 / DBL_EPSILON * M_PI, 0);
/* Check if the code that handles huge angles hangs */
cairo_arc (cr, 0, 0, 1, 0, 1024 / DBL_EPSILON * M_PI);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (arc_infinite_loop,
"Test cairo_arc with huge angles",
"arc", /* keywords */
NULL, /* requirements */
SIZE, SIZE,
NULL, draw)
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