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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/.
118 lines
4 KiB
C
118 lines
4 KiB
C
/*
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* Copyright © 2006 Jeff Muizelaar
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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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* Jeff Muizelaar. 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. Jeff Muizelaar. 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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* JEFF MUIZELAAR 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 JEFF MUIZELAAR 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: Jeff Muizelaar <jeff@infidigm.net>
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*/
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#include "cairo-test.h"
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#define IMAGE_WIDTH 19
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#define IMAGE_HEIGHT 61
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/* A test of the two extremes of dashing: a solid line
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* and an invisible one. Also test that capping works
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* on invisible lines.
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*/
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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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"dash-zero-length",
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"Tests cairo_set_dash with zero length",
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IMAGE_WIDTH, IMAGE_HEIGHT,
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draw
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};
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static void
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draw_dash (cairo_t *cr, double *dash, int num_dashes)
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{
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cairo_set_dash (cr, dash, num_dashes, 0.0);
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cairo_move_to (cr, 1, 2);
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cairo_line_to (cr, 18, 2);
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cairo_stroke (cr);
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cairo_translate (cr, 0, 3);
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}
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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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static double solid_line[] = { 4, 0 };
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static double invisible_line[] = { 0, 4 };
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static double dotted_line[] = { 0, 6 };
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static double zero_1_of_3[] = { 0, 2, 3 };
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static double zero_2_of_3[] = { 1, 0, 3 };
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static double zero_3_of_3[] = { 1, 2, 0 };
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static double zero_1_of_4[] = { 0, 2, 3, 4 };
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static double zero_2_of_4[] = { 1, 0, 3, 4 };
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static double zero_3_of_4[] = { 1, 2, 0, 4 };
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static double zero_4_of_4[] = { 1, 2, 3, 0 };
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static double zero_1_2_of_4[] = { 0, 0, 3, 4 };
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static double zero_1_3_of_4[] = { 0, 2, 0, 4 };
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/* Clearly it would be nice to draw this one as well, but it seems to trigger a bug in ghostscript. */
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#if BUG_FIXED_IN_GHOSTSCRIPT
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static double zero_1_4_of_4[] = { 0, 2, 3, 0 };
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#endif
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static double zero_2_3_of_4[] = { 1, 0, 0, 4 };
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static double zero_2_4_of_4[] = { 1, 0, 3, 0 };
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static double zero_3_4_of_4[] = { 1, 2, 0, 0 };
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static double zero_1_2_3_of_4[] = { 0, 0, 0, 4 };
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static double zero_1_2_4_of_4[] = { 0, 0, 3, 0 };
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static double zero_1_3_4_of_4[] = { 0, 2, 0, 0 };
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static double zero_2_3_4_of_4[] = { 1, 0, 0, 0 };
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cairo_set_source_rgb (cr, 1, 0, 0);
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cairo_set_line_width (cr, 2);
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draw_dash (cr, solid_line, 2);
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draw_dash (cr, invisible_line, 2);
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
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draw_dash (cr, dotted_line, 2);
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cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
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draw_dash (cr, zero_1_of_3, 3);
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draw_dash (cr, zero_2_of_3, 3);
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draw_dash (cr, zero_3_of_3, 3);
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draw_dash (cr, zero_1_of_4, 4);
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draw_dash (cr, zero_2_of_4, 4);
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draw_dash (cr, zero_3_of_4, 4);
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draw_dash (cr, zero_4_of_4, 4);
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draw_dash (cr, zero_1_2_of_4, 4);
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draw_dash (cr, zero_1_3_of_4, 4);
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#if BUG_FIXED_IN_GHOSTSCRIPT
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draw_dash (cr, zero_1_4_of_4, 4);
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#endif
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draw_dash (cr, zero_2_3_of_4, 4);
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draw_dash (cr, zero_2_4_of_4, 4);
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draw_dash (cr, zero_3_4_of_4, 4);
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draw_dash (cr, zero_1_2_3_of_4, 4);
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draw_dash (cr, zero_1_2_4_of_4, 4);
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draw_dash (cr, zero_1_3_4_of_4, 4);
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draw_dash (cr, zero_2_3_4_of_4, 4);
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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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