cairo/test/degenerate-arc.c
Chris Wilson e90073f7dd [test] Build test suite into single binary.
Avoid calling libtool to link every single test case, by building just one
binary from all the sources.

This binary is then given the task of choosing tests to run (based on user
selection and individual test requirement), forking each test into its own
process and accumulating the results.
2008-10-31 12:30:11 +00:00

74 lines
2.4 KiB
C

/*
* Copyright © 2008 Chris Wilson
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of
* Chris Wilson not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Chris Wilson makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Author: Chris Wilson <chris@chris-wilson.co.uk>
*/
/* This test case exercises a "Potential division by zero in cairo_arc"
* reported by Luiz Americo Pereira Camara <luizmed@oi.com.br>,
* http://lists.cairographics.org/archives/cairo/2008-May/014054.html.
*/
#include "cairo-test.h"
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
int n;
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
cairo_set_line_width (cr, 5);
cairo_set_source_rgb (cr, 0, 1, 0);
for (n = 0; n < 8; n++) {
double theta = n * 2 * M_PI / 8;
cairo_new_sub_path (cr);
cairo_arc (cr, 20, 20, 15, theta, theta);
cairo_close_path (cr);
}
cairo_stroke (cr);
cairo_set_line_width (cr, 2);
cairo_set_source_rgb (cr, 0, 0, 1);
for (n = 0; n < 8; n++) {
double theta = n * 2 * M_PI / 8;
cairo_move_to (cr, 20, 20);
cairo_arc (cr, 20, 20, 15, theta, theta);
}
cairo_stroke (cr);
cairo_set_source_rgb (cr, 1, 0, 0);
cairo_arc (cr, 20, 20, 2, 0, 2*M_PI);
cairo_fill (cr);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (degenerate_arc,
"Tests the behaviour of degenerate arcs",
"degenerate", /* keywords */
NULL, /* requirements */
40, 40,
NULL, draw)