Grcov report - line-width-tolerance.c

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/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */

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/*

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 * Copyright 2011 Red Hat Inc.

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 * Permission is hereby granted, free of charge, to any person

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 * obtaining a copy of this software and associated documentation

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 * files (the "Software"), to deal in the Software without

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 * restriction, including without limitation the rights to use, copy,

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 * modify, merge, publish, distribute, sublicense, and/or sell copies

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 * of the Software, and to permit persons to whom the Software is

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 * furnished to do so, subject to the following conditions:

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 * The above copyright notice and this permission notice shall be

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 * included in all copies or substantial portions of the Software.

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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

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 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

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 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS

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 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN

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 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

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 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

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 * SOFTWARE.

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 * Author: Benjamin Otte <otte@redhat.com>

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*/

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/*

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 * Test case taken from the WebKit test suite, failure originally reported

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 * by Zan Dobersek <zandobersek@gmail.com> at

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 * https://bugs.webkit.org/show_bug.cgi?id=54471

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*/

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#include "cairo-test.h"

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#include <math.h>

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#define RADIUS 50

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static cairo_test_status_t

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draw (cairo_t *cr, int width, int height)

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    /* fill with green so RGB and RGBA tests can share the ref image */

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    cairo_set_source_rgb (cr, 0, 1, 0);

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    cairo_paint (cr);

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    /* red to see eventual bugs immediately */

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    cairo_set_source_rgb (cr, 1, 0, 0);

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    /* stroke 3/4 of a circle where the last quarter would be this

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     * reference image. Keep just a 1 pixel border. Use a huge line

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     * width (twice the circle's radius to get it filled completely).

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*/

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    cairo_set_line_width (cr, 2 * RADIUS);

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    cairo_arc (cr, 1, RADIUS - 1, RADIUS, 0, - M_PI / 2.0);

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    cairo_stroke (cr);

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    return CAIRO_TEST_SUCCESS;

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CAIRO_TEST (line_width_tolerance,

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	    "Test interaction of line width and tolerance when stroking arcs",

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	    "stroke", /* keywords */

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	    NULL, /* requirements */

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	    RADIUS, RADIUS,

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	    NULL, draw)