2 * Copyright © 2004 Red Hat, Inc.
4 * Permission to use, copy, modify, distribute, and sell this software
5 * and its documentation for any purpose is hereby granted without
6 * fee, provided that the above copyright notice appear in all copies
7 * and that both that copyright notice and this permission notice
8 * appear in supporting documentation, and that the name of
9 * Red Hat, Inc. not be used in advertising or publicity pertaining to
10 * distribution of the software without specific, written prior
11 * permission. Red Hat, Inc. makes no representations about the
12 * suitability of this software for any purpose. It is provided "as
13 * is" without express or implied warranty.
15 * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
16 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
17 * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
18 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
19 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
20 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
21 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 * Author: Carl D. Worth <cworth@cworth.org>
26 #ifndef _CAIRO_TEST_H_
27 #define _CAIRO_TEST_H_
29 #include "cairo-boilerplate.h"
38 # include <inttypes.h>
39 #elif HAVE_SYS_INT_TYPES_H
40 # include <sys/int_types.h>
41 #elif defined(_MSC_VER)
42 typedef __int8 int8_t;
43 typedef unsigned __int8 uint8_t;
44 typedef __int16 int16_t;
45 typedef unsigned __int16 uint16_t;
46 typedef __int32 int32_t;
47 typedef unsigned __int32 uint32_t;
48 typedef __int64 int64_t;
49 typedef unsigned __int64 uint64_t;
50 # ifndef HAVE_UINT64_T
51 # define HAVE_UINT64_T 1
54 #error Cannot find definitions for fixed-width integral types (uint8_t, uint32_t, \etc.)
58 #define _USE_MATH_DEFINES
61 #define isnan(x) _isnan(x)
71 /* MSVC strtod("NaN", NULL) returns 0.0 */
75 } nan = {{0xffffffff, 0x7fffffff}};
78 return strtod("NaN", NULL);
83 #define MIN(a, b) ((a) < (b) ? (a) : (b))
87 #define MAX(a, b) ((a) > (b) ? (a) : (b))
91 #define ARRAY_LENGTH(__array) ((int) (sizeof (__array) / sizeof (__array[0])))
94 #define CAIRO_TEST_OUTPUT_DIR "output"
96 #define CAIRO_TEST_LOG_SUFFIX ".log"
98 #define CAIRO_TEST_FONT_FAMILY "DejaVu"
100 /* What is a fail and what isn't?
101 * When running the test suite we want to detect unexpected output. This
102 * can be caused by a change we have made to cairo itself, or a change
103 * in our environment. To capture this we classify the expected output into 3
106 * REF -- Perfect output.
107 * Might be different for each backend, due to slight implementation
110 * NEW -- A new failure. We have uncovered a bug within cairo and have
111 * recorded the current failure (along with the expected output
112 * if possible!) so we can detect any changes in our attempt to
115 * XFAIL -- An external failure. We believe the cairo output is perfect,
116 * but an external renderer is causing gross failure.
117 * (We also use this to capture current WONTFIX issues within cairo,
118 * such as overflow in internal coordinates, so as not to distract
119 * us when regression testing.)
121 * If no REF is given for a test, then it is assumed to be XFAIL.
123 #define CAIRO_TEST_REF_SUFFIX ".ref"
124 #define CAIRO_TEST_XFAIL_SUFFIX ".xfail"
125 #define CAIRO_TEST_NEW_SUFFIX ".new"
127 #define CAIRO_TEST_OUT_SUFFIX ".out"
128 #define CAIRO_TEST_DIFF_SUFFIX ".diff"
130 #define CAIRO_TEST_PNG_EXTENSION ".png"
131 #define CAIRO_TEST_OUT_PNG CAIRO_TEST_OUT_SUFFIX CAIRO_TEST_PNG_EXTENSION
132 #define CAIRO_TEST_REF_PNG CAIRO_TEST_REF_SUFFIX CAIRO_TEST_PNG_EXTENSION
133 #define CAIRO_TEST_DIFF_PNG CAIRO_TEST_DIFF_SUFFIX CAIRO_TEST_PNG_EXTENSION
135 typedef enum cairo_test_status {
136 CAIRO_TEST_SUCCESS = 0,
137 CAIRO_TEST_NO_MEMORY,
143 CAIRO_TEST_UNTESTED = 77 /* match automake's skipped exit status */
144 } cairo_test_status_t;
146 typedef struct _cairo_test_context cairo_test_context_t;
147 typedef struct _cairo_test cairo_test_t;
149 typedef cairo_test_status_t
150 (cairo_test_preamble_function_t) (cairo_test_context_t *ctx);
152 typedef cairo_test_status_t
153 (cairo_test_draw_function_t) (cairo_t *cr, int width, int height);
157 const char *description;
158 const char *keywords;
159 const char *requirements;
162 cairo_test_preamble_function_t *preamble;
163 cairo_test_draw_function_t *draw;
166 /* The standard test interface which works by examining result image.
168 * CAIRO_TEST() constructs a test which will be called once before (the
169 * preamble callback), and then once for each testable backend (the draw
170 * callback). The following checks will be performed for each backend:
172 * 1) If preamble() returns CAIRO_TEST_UNTESTED, the test is skipped.
174 * 2) If preamble() does not return CAIRO_TEST_SUCCESS, the test fails.
176 * 3) If draw() does not return CAIRO_TEST_SUCCESS then this backend
179 * 4) Otherwise, if cairo_status(cr) indicates an error then this
182 * 5) Otherwise, if the image size is 0, then this backend passes.
184 * 6) Otherwise, if every channel of every pixel exactly matches the
185 * reference image then this backend passes. If not, this backend
188 * The overall test result is PASS if and only if there is at least
189 * one backend that is tested and if all tested backend pass according
190 * to the four criteria above.
192 #define CAIRO_TEST(name, description, keywords, requirements, width, height, preamble, draw) \
193 void _register_##name (void); \
194 void _register_##name (void) { \
195 static cairo_test_t test = { \
196 #name, description, \
197 keywords, requirements, \
201 cairo_test_register (&test); \
205 cairo_test_register (cairo_test_t *test);
207 /* The full context for the test.
208 * For ordinary tests (using the CAIRO_TEST()->draw interface) the context
209 * is passed to the draw routine via user_data on the cairo_t.
210 * The reason why the context is not passed as an explicit parameter is that
211 * it is rarely required by the test itself and by removing the parameter
212 * we can keep the draw routines simple and serve as example code.
214 * In contrast, for the preamble phase the context is passed as the only
217 struct _cairo_test_context {
218 const cairo_test_t *test;
219 const char *test_name;
223 const char *srcdir; /* directory containing sources and input data */
224 const char *refdir; /* directory containing reference images */
226 char *ref_name; /* cache of the current reference image */
227 cairo_surface_t *ref_image;
228 cairo_surface_t *ref_image_flattened;
231 cairo_bool_t limited_targets;
232 const cairo_boilerplate_target_t **targets_to_test;
233 cairo_bool_t own_targets;
236 int last_fault_count;
241 /* Retrieve the test context from the cairo_t, used for logging, paths etc */
242 const cairo_test_context_t *
243 cairo_test_get_context (cairo_t *cr);
246 /* Print a message to the log file, ala printf. */
248 cairo_test_log (const cairo_test_context_t *ctx,
249 const char *fmt, ...) CAIRO_BOILERPLATE_PRINTF_FORMAT(2, 3);
251 cairo_test_logv (const cairo_test_context_t *ctx,
252 const char *fmt, va_list ap) CAIRO_BOILERPLATE_PRINTF_FORMAT(2, 0);
254 /* Helper functions that take care of finding source images even when
255 * building in a non-srcdir manner, (i.e. the tests will be run in a
256 * directory that is different from the one where the source image
259 cairo_test_create_surface_from_png (const cairo_test_context_t *ctx,
260 const char *filename);
263 cairo_test_create_pattern_from_png (const cairo_test_context_t *ctx,
264 const char *filename);
267 cairo_test_paint_checkered (cairo_t *cr);
269 #define CAIRO_TEST_DOUBLE_EQUALS(a,b) (fabs((a)-(b)) < 0.00001)
272 cairo_test_is_target_enabled (const cairo_test_context_t *ctx,
276 cairo_test_get_name (const cairo_test_t *test);
279 cairo_test_malloc_failure (const cairo_test_context_t *ctx,
280 cairo_status_t status);
283 cairo_test_status_from_status (const cairo_test_context_t *ctx,
284 cairo_status_t status);
287 cairo_test_reference_filename (const cairo_test_context_t *ctx,
288 const char *base_name,
289 const char *test_name,
290 const char *target_name,
291 const char *base_target_name,
294 const char *extension);
297 cairo_test_get_reference_image (cairo_test_context_t *ctx,
298 const char *filename,
299 cairo_bool_t flatten);