2 * Copyright © 2011 Google, Inc.
4 * This is part of HarfBuzz, a text shaping library.
6 * Permission is hereby granted, without written agreement and without
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8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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24 * Google Author(s): Behdad Esfahbod
29 /* Unit tests for hb-blob.h */
31 #if defined(HAVE_SYS_MMAN_H) && defined(HAVE_MPROTECT) && defined(HAVE_MMAP)
35 #ifdef HAVE_SYS_MMAN_H
38 #endif /* HAVE_UNISTD_H */
40 #endif /* HAVE_SYS_MMAN_H */
46 test_blob_empty (void)
53 g_assert (hb_blob_is_immutable (hb_blob_get_empty ()));
54 g_assert (hb_blob_get_empty () != NULL);
55 g_assert (hb_blob_get_empty () == hb_blob_create (NULL, 0, HB_MEMORY_MODE_READONLY, NULL, NULL));
56 g_assert (hb_blob_get_empty () == hb_blob_create ("asdf", 0, HB_MEMORY_MODE_READONLY, NULL, NULL));
57 g_assert (hb_blob_get_empty () == hb_blob_create (NULL, -1, HB_MEMORY_MODE_READONLY, NULL, NULL));
58 g_assert (hb_blob_get_empty () == hb_blob_create ("asdfg", -1, HB_MEMORY_MODE_READONLY, NULL, NULL));
60 blob = hb_blob_get_empty ();
61 g_assert (blob == hb_blob_get_empty ());
63 len = hb_blob_get_length (blob);
64 g_assert_cmpint (len, ==, 0);
66 data = hb_blob_get_data (blob, NULL);
67 g_assert (data == NULL);
69 data = hb_blob_get_data (blob, &len);
70 g_assert (data == NULL);
71 g_assert_cmpint (len, ==, 0);
73 data_writable = hb_blob_get_data_writable (blob, NULL);
74 g_assert (data_writable == NULL);
76 data_writable = hb_blob_get_data_writable (blob, &len);
77 g_assert (data_writable == NULL);
78 g_assert_cmpint (len, ==, 0);
81 static const char test_data[] = "test\0data";
83 static const char *blob_names[] = {
88 , "readonly-may-make-writable"
101 free_up (fixture_t *fixture)
103 g_assert_cmpint (fixture->freed, ==, 0);
108 free_up_free (fixture_t *fixture)
111 free (fixture->data);
119 uintptr_t pagesize = (uintptr_t) -1;
121 #if defined(HAVE_SYSCONF) && defined(_SC_PAGE_SIZE)
122 pagesize = (uintptr_t) sysconf (_SC_PAGE_SIZE);
123 #elif defined(HAVE_SYSCONF) && defined(_SC_PAGESIZE)
124 pagesize = (uintptr_t) sysconf (_SC_PAGESIZE);
125 #elif defined(HAVE_GETPAGESIZE)
126 pagesize = (uintptr_t) getpagesize ();
129 g_assert (pagesize != (uintptr_t) -1);
135 free_up_munmap (fixture_t *fixture)
138 munmap (fixture->data, get_pagesize ());
144 fixture_init (fixture_t *fixture, gconstpointer user_data)
146 hb_memory_mode_t mm = (hb_memory_mode_t) GPOINTER_TO_INT (user_data);
149 hb_destroy_func_t free_func;
151 switch (GPOINTER_TO_INT (user_data))
153 case HB_MEMORY_MODE_DUPLICATE:
155 len = sizeof (test_data);
156 free_func = (hb_destroy_func_t) free_up;
159 case HB_MEMORY_MODE_READONLY:
161 len = sizeof (test_data);
162 free_func = (hb_destroy_func_t) free_up;
165 case HB_MEMORY_MODE_WRITABLE:
166 data = malloc (sizeof (test_data));
167 memcpy ((char *) data, test_data, sizeof (test_data));
168 len = sizeof (test_data);
169 free_func = (hb_destroy_func_t) free_up_free;
173 case HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE:
175 uintptr_t pagesize = get_pagesize ();
177 data = mmap (NULL, pagesize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
178 g_assert (data != (char *) -1);
179 memcpy ((char *) data, test_data, sizeof (test_data));
180 mprotect ((char *) data, pagesize, PROT_READ);
181 len = sizeof (test_data);
182 free_func = (hb_destroy_func_t) free_up_munmap;
188 g_assert_not_reached ();
192 fixture->data = (char *) data;
194 fixture->blob = hb_blob_create (data, len, mm, fixture, free_func);
198 fixture_finish (fixture_t *fixture, gconstpointer user_data)
200 hb_blob_destroy (fixture->blob);
201 g_assert_cmpint (fixture->freed, ==, 1);
206 test_blob (fixture_t *fixture, gconstpointer user_data)
208 hb_blob_t *b = fixture->blob;
209 hb_memory_mode_t mm = GPOINTER_TO_INT (user_data);
217 len = hb_blob_get_length (b);
218 g_assert_cmpint (len, ==, fixture->len);
220 data = hb_blob_get_data (b, &len);
221 g_assert_cmpint (len, ==, fixture->len);
222 if (mm == HB_MEMORY_MODE_DUPLICATE) {
223 g_assert (data != fixture->data);
224 g_assert_cmpint (fixture->freed, ==, 1);
225 mm = HB_MEMORY_MODE_WRITABLE;
227 g_assert (data == fixture->data);
228 g_assert_cmpint (fixture->freed, ==, 0);
231 data_writable = hb_blob_get_data_writable (b, &len);
232 g_assert_cmpint (len, ==, fixture->len);
233 g_assert (data_writable);
234 g_assert (0 == memcmp (data_writable, fixture->data, fixture->len));
235 if (mm == HB_MEMORY_MODE_READONLY) {
236 g_assert (data_writable != data);
237 g_assert_cmpint (fixture->freed, ==, 1);
239 g_assert (data_writable == data);
242 data = hb_blob_get_data (b, &len);
243 g_assert_cmpint (len, ==, fixture->len);
244 g_assert (data == data_writable);
246 memset (data_writable, 0, fixture->len);
248 /* Now, make it immutable and watch get_data_writable() fail */
250 g_assert (!hb_blob_is_immutable (b));
251 hb_blob_make_immutable (b);
252 g_assert (hb_blob_is_immutable (b));
254 data_writable = hb_blob_get_data_writable (b, &len);
255 g_assert (!data_writable);
256 g_assert_cmpint (len, ==, 0);
258 data = hb_blob_get_data (b, &len);
259 g_assert_cmpint (len, ==, fixture->len);
260 for (i = 0; i < len; i++)
261 g_assert ('\0' == data[i]);
265 test_blob_subblob (fixture_t *fixture, gconstpointer user_data)
267 hb_blob_t *b = fixture->blob;
268 hb_memory_mode_t mm = GPOINTER_TO_INT (user_data);
274 if (mm == HB_MEMORY_MODE_DUPLICATE) {
275 g_assert_cmpint (fixture->freed, ==, 1);
276 fixture->data = (char *) hb_blob_get_data (b, NULL);
278 g_assert_cmpint (fixture->freed, ==, 0);
280 fixture->blob = hb_blob_create_sub_blob (b, 1, fixture->len - 2);
284 /* A sub-blob is always created READONLY. */
288 len = hb_blob_get_length (b);
289 g_assert_cmpint (len, ==, fixture->len - 2);
291 data = hb_blob_get_data (b, &len);
292 g_assert_cmpint (len, ==, fixture->len - 2);
293 g_assert (data == fixture->data + 1);
295 data_writable = hb_blob_get_data_writable (b, &len);
296 g_assert_cmpint (len, ==, fixture->len - 2);
297 g_assert (data_writable);
298 if (mm == HB_MEMORY_MODE_READONLY)
299 g_assert (0 == memcmp (data_writable, fixture->data + 1, fixture->len - 2));
300 g_assert (data_writable != data);
301 g_assert_cmpint (fixture->freed, ==, 1);
303 data = hb_blob_get_data (b, &len);
304 g_assert_cmpint (len, ==, fixture->len - 2);
305 g_assert (data == data_writable);
307 memset (data_writable, 0, fixture->len - 2);
309 /* Now, make it immutable and watch get_data_writable() fail */
311 g_assert (!hb_blob_is_immutable (b));
312 hb_blob_make_immutable (b);
313 g_assert (hb_blob_is_immutable (b));
315 data_writable = hb_blob_get_data_writable (b, &len);
316 g_assert (!data_writable);
317 g_assert_cmpint (len, ==, 0);
319 data = hb_blob_get_data (b, &len);
320 g_assert_cmpint (len, ==, fixture->len - 2);
321 for (i = 0; i < len; i++)
322 g_assert ('\0' == data[i]);
327 main (int argc, char **argv)
331 hb_test_init (&argc, &argv);
333 hb_test_add (test_blob_empty);
335 for (i = 0; i < G_N_ELEMENTS (blob_names); i++)
337 const void *blob_type = GINT_TO_POINTER (i);
338 const char *blob_name = blob_names[i];
340 hb_test_add_fixture_flavor (fixture, blob_type, blob_name, test_blob);
341 hb_test_add_fixture_flavor (fixture, blob_type, blob_name, test_blob_subblob);
348 return hb_test_run ();