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436c0c8be2
In order to run under memfault, the framework is first extended to handle running concurrent tests - i.e. multi-threading. (Not that this is a requirement for memfault, instead it shares a common goal of storing per-test data). To that end all the global data is moved into a per-test context and the targets are adjusted to avoid overlap on shared, global resources (such as output files and frame buffers). In order to preserve the simplicity of the standard draw routines, the context is not passed explicitly as a parameter to the routines, but is instead attached to the cairo_t via the user_data. For the masochist, to enable the tests to be run across multiple threads simply set the environment variable CAIRO_TEST_NUM_THREADS to the desired number. In the long run, we can hope the need for memfault (runtime testing of error paths) will be mitigated by static analysis. A promising candidate for this task would appear to be http://hal.cs.berkeley.edu/cil/.
135 lines
4.3 KiB
C
135 lines
4.3 KiB
C
/*
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* Copyright © 2004 Red Hat, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of
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* Red Hat, Inc. not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior
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* permission. Red Hat, Inc. makes no representations about the
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* suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
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* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
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* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: Carl D. Worth <cworth@cworth.org>
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*/
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/* Bug history
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*
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* 2004-10-27 Carl Worth <cworth@cworth.org>
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*
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* There's currently a regression bug in the tessellation code. This
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* causes each of these simple star shapes to be filled incorrectly.
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*
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* It looks like right now we can get this test to pass by doing:
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*
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* cvs update -r 1.16 src/cairo_traps.c
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*
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* But we don't want to revert that change permanently since it
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* really does correct some bugs. It must be that the old version of
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* the code is masking some other bugs in the tessellation code. My
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* current plan is to back this revision up for the next snapshot,
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* but not to list the test as an expected failure since I'm
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* planning on doing the new tessellator which should fix this
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* problem.
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*
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* 2005-01-11 Carl Worth <cworth@cworth.org>
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*
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* Keith committed some fixes that fix the original size-20
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* star_path:
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*
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* * src/cairo_wideint.c: (_cairo_int32x32_64_mul),
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* (_cairo_int64x64_128_mul):
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* * src/cairo_wideint.h:
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* int32x32_64_mul and int64x64_128_mul are different from their
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* unsigned compatriots
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*
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* 2005-01-12 Carl Worth <cworth@cworth.org>
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*
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* Going back to the SVG test suite, however, the original star
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* shape is still broken. Adding both shapes now as little_star_path
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* and big_star_path.
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*
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*/
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#include "cairo-test.h"
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#define LITTLE_STAR_SIZE 20
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#define BIG_STAR_SIZE 80
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static cairo_test_draw_function_t draw;
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static const cairo_test_t test = {
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"fill-rule",
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"Tests cairo_set_fill_rule with some star shapes",
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BIG_STAR_SIZE * 2 + 3, BIG_STAR_SIZE + LITTLE_STAR_SIZE + 3,
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draw
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};
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/* The SVG start trimmed down, but still showing the bug (originally) */
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static void
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little_star_path (cairo_t *cr)
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{
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cairo_move_to (cr, 10, 0);
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cairo_rel_line_to (cr, 6, 20);
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cairo_rel_line_to (cr, -16, -12);
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cairo_rel_line_to (cr, 20, 0);
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cairo_rel_line_to (cr, -16, 12);
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}
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/* The star shape from the SVG test suite. This was is still buggy even after
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we got little_star_path working. */
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static void
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big_star_path (cairo_t *cr)
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{
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cairo_move_to (cr, 40, 0);
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cairo_rel_line_to (cr, 25, 80);
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cairo_rel_line_to (cr, -65, -50);
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cairo_rel_line_to (cr, 80, 0);
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cairo_rel_line_to (cr, -65, 50);
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cairo_close_path (cr);
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}
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/* Fill the same path twice, once with each fill rule */
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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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{
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cairo_set_source_rgb (cr, 1, 0, 0);
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cairo_translate (cr, 1, 1);
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little_star_path (cr);
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cairo_set_fill_rule (cr, CAIRO_FILL_RULE_WINDING);
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cairo_fill (cr);
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cairo_translate (cr, LITTLE_STAR_SIZE + 1, 0);
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little_star_path (cr);
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cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
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cairo_fill (cr);
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cairo_translate (cr, -(LITTLE_STAR_SIZE + 1), LITTLE_STAR_SIZE + 1);
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big_star_path (cr);
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cairo_set_fill_rule (cr, CAIRO_FILL_RULE_WINDING);
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cairo_fill (cr);
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cairo_translate (cr, BIG_STAR_SIZE + 1, 0);
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big_star_path (cr);
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cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
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cairo_fill (cr);
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return CAIRO_TEST_SUCCESS;
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}
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int
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main (void)
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{
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return cairo_test (&test);
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}
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