| /* |
| * Copyright © 2011 Google, Inc. |
| * |
| * This is part of HarfBuzz, a text shaping library. |
| * |
| * Permission is hereby granted, without written agreement and without |
| * license or royalty fees, to use, copy, modify, and distribute this |
| * software and its documentation for any purpose, provided that the |
| * above copyright notice and the following two paragraphs appear in |
| * all copies of this software. |
| * |
| * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
| * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
| * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
| * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
| * DAMAGE. |
| * |
| * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
| * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
| * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
| * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
| * |
| * Google Author(s): Behdad Esfahbod |
| */ |
| |
| #include "hb-test.h" |
| |
| /* Unit tests for hb-blob.h */ |
| |
| #if defined(HAVE_SYS_MMAN_H) && defined(HAVE_MPROTECT) && defined(HAVE_MMAP) |
| |
| # define TEST_MMAP 1 |
| |
| #ifdef HAVE_SYS_MMAN_H |
| #ifdef HAVE_UNISTD_H |
| #include <unistd.h> |
| #endif /* HAVE_UNISTD_H */ |
| #include <sys/mman.h> |
| #endif /* HAVE_SYS_MMAN_H */ |
| |
| #endif |
| |
| |
| static void |
| test_blob_empty (void) |
| { |
| hb_blob_t *blob; |
| unsigned int len; |
| const char *data; |
| char *data_writable; |
| |
| g_assert (hb_blob_is_immutable (hb_blob_get_empty ())); |
| g_assert (hb_blob_get_empty () != NULL); |
| g_assert (hb_blob_get_empty () == hb_blob_create (NULL, 0, HB_MEMORY_MODE_READONLY, NULL, NULL)); |
| g_assert (hb_blob_get_empty () == hb_blob_create ("asdf", 0, HB_MEMORY_MODE_READONLY, NULL, NULL)); |
| g_assert (hb_blob_get_empty () == hb_blob_create (NULL, -1, HB_MEMORY_MODE_READONLY, NULL, NULL)); |
| g_assert (hb_blob_get_empty () == hb_blob_create ("asdfg", -1, HB_MEMORY_MODE_READONLY, NULL, NULL)); |
| |
| blob = hb_blob_get_empty (); |
| g_assert (blob == hb_blob_get_empty ()); |
| |
| len = hb_blob_get_length (blob); |
| g_assert_cmpint (len, ==, 0); |
| |
| data = hb_blob_get_data (blob, NULL); |
| g_assert (data == NULL); |
| |
| data = hb_blob_get_data (blob, &len); |
| g_assert (data == NULL); |
| g_assert_cmpint (len, ==, 0); |
| |
| data_writable = hb_blob_get_data_writable (blob, NULL); |
| g_assert (data_writable == NULL); |
| |
| data_writable = hb_blob_get_data_writable (blob, &len); |
| g_assert (data_writable == NULL); |
| g_assert_cmpint (len, ==, 0); |
| } |
| |
| static const char test_data[] = "test\0data"; |
| |
| static const char *blob_names[] = { |
| "duplicate", |
| "readonly", |
| "writable" |
| #ifdef TEST_MMAP |
| , "readonly-may-make-writable" |
| #endif |
| }; |
| |
| typedef struct |
| { |
| hb_blob_t *blob; |
| int freed; |
| char *data; |
| unsigned int len; |
| } fixture_t; |
| |
| static void |
| free_up (fixture_t *fixture) |
| { |
| g_assert_cmpint (fixture->freed, ==, 0); |
| fixture->freed++; |
| } |
| |
| static void |
| free_up_free (fixture_t *fixture) |
| { |
| free_up (fixture); |
| free (fixture->data); |
| } |
| |
| |
| #ifdef TEST_MMAP |
| static uintptr_t |
| get_pagesize (void) |
| { |
| uintptr_t pagesize = (uintptr_t) -1; |
| |
| #if defined(HAVE_SYSCONF) && defined(_SC_PAGE_SIZE) |
| pagesize = (uintptr_t) sysconf (_SC_PAGE_SIZE); |
| #elif defined(HAVE_SYSCONF) && defined(_SC_PAGESIZE) |
| pagesize = (uintptr_t) sysconf (_SC_PAGESIZE); |
| #elif defined(HAVE_GETPAGESIZE) |
| pagesize = (uintptr_t) getpagesize (); |
| #endif |
| |
| g_assert (pagesize != (uintptr_t) -1); |
| |
| return pagesize; |
| } |
| |
| static void |
| free_up_munmap (fixture_t *fixture) |
| { |
| free_up (fixture); |
| munmap (fixture->data, get_pagesize ()); |
| } |
| #endif |
| |
| #include <errno.h> |
| static void |
| fixture_init (fixture_t *fixture, gconstpointer user_data) |
| { |
| hb_memory_mode_t mm = (hb_memory_mode_t) GPOINTER_TO_INT (user_data); |
| unsigned int len; |
| const char *data; |
| hb_destroy_func_t free_func; |
| |
| switch (GPOINTER_TO_INT (user_data)) |
| { |
| case HB_MEMORY_MODE_DUPLICATE: |
| data = test_data; |
| len = sizeof (test_data); |
| free_func = (hb_destroy_func_t) free_up; |
| break; |
| |
| case HB_MEMORY_MODE_READONLY: |
| data = test_data; |
| len = sizeof (test_data); |
| free_func = (hb_destroy_func_t) free_up; |
| break; |
| |
| case HB_MEMORY_MODE_WRITABLE: |
| data = malloc (sizeof (test_data)); |
| memcpy ((char *) data, test_data, sizeof (test_data)); |
| len = sizeof (test_data); |
| free_func = (hb_destroy_func_t) free_up_free; |
| break; |
| |
| #ifdef TEST_MMAP |
| case HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE: |
| { |
| uintptr_t pagesize = get_pagesize (); |
| |
| data = mmap (NULL, pagesize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0); |
| g_assert (data != (char *) -1); |
| memcpy ((char *) data, test_data, sizeof (test_data)); |
| mprotect ((char *) data, pagesize, PROT_READ); |
| len = sizeof (test_data); |
| free_func = (hb_destroy_func_t) free_up_munmap; |
| break; |
| } |
| #endif |
| |
| default: |
| g_assert_not_reached (); |
| } |
| |
| fixture->freed = 0; |
| fixture->data = (char *) data; |
| fixture->len = len; |
| fixture->blob = hb_blob_create (data, len, mm, fixture, free_func); |
| } |
| |
| static void |
| fixture_finish (fixture_t *fixture, gconstpointer user_data HB_UNUSED) |
| { |
| hb_blob_destroy (fixture->blob); |
| g_assert_cmpint (fixture->freed, ==, 1); |
| } |
| |
| |
| static void |
| test_blob (fixture_t *fixture, gconstpointer user_data) |
| { |
| hb_blob_t *b = fixture->blob; |
| hb_memory_mode_t mm = GPOINTER_TO_INT (user_data); |
| unsigned int len; |
| const char *data; |
| char *data_writable; |
| unsigned int i; |
| |
| g_assert (b); |
| |
| len = hb_blob_get_length (b); |
| g_assert_cmpint (len, ==, fixture->len); |
| |
| data = hb_blob_get_data (b, &len); |
| g_assert_cmpint (len, ==, fixture->len); |
| if (mm == HB_MEMORY_MODE_DUPLICATE) { |
| g_assert (data != fixture->data); |
| g_assert_cmpint (fixture->freed, ==, 1); |
| mm = HB_MEMORY_MODE_WRITABLE; |
| } else { |
| g_assert (data == fixture->data); |
| g_assert_cmpint (fixture->freed, ==, 0); |
| } |
| |
| data_writable = hb_blob_get_data_writable (b, &len); |
| g_assert_cmpint (len, ==, fixture->len); |
| g_assert (data_writable); |
| g_assert (0 == memcmp (data_writable, fixture->data, fixture->len)); |
| if (mm == HB_MEMORY_MODE_READONLY) { |
| g_assert (data_writable != data); |
| g_assert_cmpint (fixture->freed, ==, 1); |
| } else { |
| g_assert (data_writable == data); |
| } |
| |
| data = hb_blob_get_data (b, &len); |
| g_assert_cmpint (len, ==, fixture->len); |
| g_assert (data == data_writable); |
| |
| memset (data_writable, 0, fixture->len); |
| |
| /* Now, make it immutable and watch get_data_writable() fail */ |
| |
| g_assert (!hb_blob_is_immutable (b)); |
| hb_blob_make_immutable (b); |
| g_assert (hb_blob_is_immutable (b)); |
| |
| data_writable = hb_blob_get_data_writable (b, &len); |
| g_assert (!data_writable); |
| g_assert_cmpint (len, ==, 0); |
| |
| data = hb_blob_get_data (b, &len); |
| g_assert_cmpint (len, ==, fixture->len); |
| for (i = 0; i < len; i++) |
| g_assert ('\0' == data[i]); |
| } |
| |
| static void |
| test_blob_subblob (fixture_t *fixture, gconstpointer user_data) |
| { |
| hb_blob_t *b = fixture->blob; |
| hb_memory_mode_t mm = GPOINTER_TO_INT (user_data); |
| unsigned int len; |
| const char *data; |
| char *data_writable; |
| unsigned int i; |
| |
| if (mm == HB_MEMORY_MODE_DUPLICATE) { |
| g_assert_cmpint (fixture->freed, ==, 1); |
| fixture->data = (char *) hb_blob_get_data (b, NULL); |
| } else { |
| g_assert_cmpint (fixture->freed, ==, 0); |
| } |
| fixture->blob = hb_blob_create_sub_blob (b, 1, fixture->len - 2); |
| hb_blob_destroy (b); |
| b = fixture->blob; |
| |
| /* A sub-blob is always created READONLY. */ |
| |
| g_assert (b); |
| |
| len = hb_blob_get_length (b); |
| g_assert_cmpint (len, ==, fixture->len - 2); |
| |
| data = hb_blob_get_data (b, &len); |
| g_assert_cmpint (len, ==, fixture->len - 2); |
| g_assert (data == fixture->data + 1); |
| |
| data_writable = hb_blob_get_data_writable (b, &len); |
| g_assert_cmpint (len, ==, fixture->len - 2); |
| g_assert (data_writable); |
| if (mm == HB_MEMORY_MODE_READONLY) |
| g_assert (0 == memcmp (data_writable, fixture->data + 1, fixture->len - 2)); |
| g_assert (data_writable != data); |
| g_assert_cmpint (fixture->freed, ==, 1); |
| |
| data = hb_blob_get_data (b, &len); |
| g_assert_cmpint (len, ==, fixture->len - 2); |
| g_assert (data == data_writable); |
| |
| memset (data_writable, 0, fixture->len - 2); |
| |
| /* Now, make it immutable and watch get_data_writable() fail */ |
| |
| g_assert (!hb_blob_is_immutable (b)); |
| hb_blob_make_immutable (b); |
| g_assert (hb_blob_is_immutable (b)); |
| |
| data_writable = hb_blob_get_data_writable (b, &len); |
| g_assert (!data_writable); |
| g_assert_cmpint (len, ==, 0); |
| |
| data = hb_blob_get_data (b, &len); |
| g_assert_cmpint (len, ==, fixture->len - 2); |
| for (i = 0; i < len; i++) |
| g_assert ('\0' == data[i]); |
| } |
| |
| |
| int |
| main (int argc, char **argv) |
| { |
| unsigned int i; |
| |
| hb_test_init (&argc, &argv); |
| |
| hb_test_add (test_blob_empty); |
| |
| for (i = 0; i < G_N_ELEMENTS (blob_names); i++) |
| { |
| const void *blob_type = GINT_TO_POINTER (i); |
| const char *blob_name = blob_names[i]; |
| |
| hb_test_add_fixture_flavor (fixture, blob_type, blob_name, test_blob); |
| hb_test_add_fixture_flavor (fixture, blob_type, blob_name, test_blob_subblob); |
| } |
| |
| /* |
| * create_sub_blob |
| */ |
| |
| return hb_test_run (); |
| } |