cairo/cairo-1.14.12/test/gradient-zero-stops.c

/*
 * Copyright © 2007 Brian Ewins
 *
 * 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: Brian Ewins <Brian.Ewins@gmail.com>
 */

#include "cairo-test.h"

/* This test case is designed to exercise the following bug:
 *
 *      Crash when trying to paint gradient with no stops
 *      https://bugzilla.mozilla.org/show_bug.cgi?id=407104
 */

static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
    cairo_pattern_t *pat;

    pat = cairo_pattern_create_linear (0., 0., 1., 1.);
    cairo_set_source (cr, pat);
    cairo_paint (cr);
    cairo_pattern_destroy (pat);

    pat = cairo_pattern_create_radial (0., 0., 0., 1., 1., 1.);
    cairo_set_source (cr, pat);
    cairo_paint (cr);
    cairo_pattern_destroy (pat);

    return CAIRO_TEST_SUCCESS;
}

CAIRO_TEST (gradient_zero_stops,
	    "Verifies that gradients with no stops don't cause problems.",
	    "gradient", /* keywords */
	    NULL, /* requirements */
	    2, 2,
	    NULL, draw)