harfbuzz/test/test-buffer.c

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/*
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* Copyright © 2011 Google, Inc.
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*
* 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"
/* This file tests types defined in hb-buffer.h */
static const char utf8[10] = "ab\360\240\200\200defg";
static const uint16_t utf16[8] = {'a', 'b', 0xD840, 0xDC00, 'd', 'e', 'f', 'g'};
static const uint32_t utf32[7] = {'a', 'b', 0x20000, 'd', 'e', 'f', 'g'};
typedef enum {
BUFFER_EMPTY,
BUFFER_ONE_BY_ONE,
BUFFER_UTF32,
BUFFER_UTF16,
BUFFER_UTF8,
BUFFER_NUM_TYPES,
} buffer_type_t;
static const char *buffer_names[] = {
"empty",
"one-by-one",
"utf32",
"utf16",
"utf8"
};
typedef struct
{
hb_buffer_t *b;
} fixture_t;
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static void
fixture_init (fixture_t *fixture, gconstpointer user_data)
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{
unsigned int i;
fixture->b = hb_buffer_create (0);
switch (GPOINTER_TO_INT (user_data)) {
case BUFFER_EMPTY:
break;
case BUFFER_ONE_BY_ONE:
for (i = 1; i < G_N_ELEMENTS (utf32) - 1; i++)
hb_buffer_add (fixture->b, utf32[i], 1, i);
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break;
case BUFFER_UTF32:
hb_buffer_add_utf32 (fixture->b, utf32, G_N_ELEMENTS (utf32), 1, G_N_ELEMENTS (utf32) - 2);
break;
case BUFFER_UTF16:
hb_buffer_add_utf16 (fixture->b, utf16, G_N_ELEMENTS (utf16), 1, G_N_ELEMENTS (utf16) - 2);
break;
case BUFFER_UTF8:
hb_buffer_add_utf8 (fixture->b, utf8, G_N_ELEMENTS (utf8), 1, G_N_ELEMENTS (utf8) - 2);
break;
default:
g_assert_not_reached ();
}
}
static void
fixture_fini (fixture_t *fixture, gconstpointer user_data)
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{
hb_buffer_destroy (fixture->b);
}
static void
test_buffer_properties (fixture_t *fixture, gconstpointer user_data)
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{
hb_unicode_funcs_t *ufuncs;
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/* test default properties */
g_assert (hb_buffer_get_unicode_funcs (fixture->b) == hb_unicode_funcs_get_default ());
g_assert (hb_buffer_get_direction (fixture->b) == HB_DIRECTION_INVALID);
g_assert (hb_buffer_get_script (fixture->b) == HB_SCRIPT_INVALID);
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g_assert (hb_buffer_get_language (fixture->b) == NULL);
/* test property changes are retained */
ufuncs = hb_unicode_funcs_create (NULL);
hb_buffer_set_unicode_funcs (fixture->b, ufuncs);
hb_unicode_funcs_destroy (ufuncs);
g_assert (hb_buffer_get_unicode_funcs (fixture->b) == ufuncs);
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hb_buffer_set_direction (fixture->b, HB_DIRECTION_RTL);
g_assert (hb_buffer_get_direction (fixture->b) == HB_DIRECTION_RTL);
hb_buffer_set_script (fixture->b, HB_SCRIPT_ARABIC);
g_assert (hb_buffer_get_script (fixture->b) == HB_SCRIPT_ARABIC);
hb_buffer_set_language (fixture->b, hb_language_from_string ("fa"));
g_assert (hb_buffer_get_language (fixture->b) == hb_language_from_string ("Fa"));
/* test reset clears properties */
hb_buffer_reset (fixture->b);
g_assert (hb_buffer_get_unicode_funcs (fixture->b) == hb_unicode_funcs_get_default ());
g_assert (hb_buffer_get_direction (fixture->b) == HB_DIRECTION_INVALID);
g_assert (hb_buffer_get_script (fixture->b) == HB_SCRIPT_INVALID);
g_assert (hb_buffer_get_language (fixture->b) == NULL);
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}
static void
test_buffer_contents (fixture_t *fixture, gconstpointer user_data)
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{
unsigned int i, len, len2;
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buffer_type_t buffer_type = GPOINTER_TO_INT (user_data);
hb_glyph_info_t *glyphs;
if (buffer_type == BUFFER_EMPTY) {
g_assert_cmpint (hb_buffer_get_length (fixture->b), ==, 0);
return;
}
len = hb_buffer_get_length (fixture->b);
glyphs = hb_buffer_get_glyph_infos (fixture->b, NULL); /* test NULL */
glyphs = hb_buffer_get_glyph_infos (fixture->b, &len2);
g_assert_cmpint (len, ==, len2);
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g_assert_cmpint (len, ==, 5);
for (i = 0; i < len; i++) {
g_assert_cmphex (glyphs[i].mask, ==, 1);
g_assert_cmphex (glyphs[i].var1.u32, ==, 0);
g_assert_cmphex (glyphs[i].var2.u32, ==, 0);
}
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for (i = 0; i < len; i++) {
unsigned int cluster;
cluster = 1+i;
if (i >= 2) {
if (buffer_type == BUFFER_UTF16)
cluster++;
else if (buffer_type == BUFFER_UTF8)
cluster += 3;
}
g_assert_cmphex (glyphs[i].codepoint, ==, utf32[1+i]);
g_assert_cmphex (glyphs[i].cluster, ==, cluster);
}
/* reverse, test, and reverse back */
hb_buffer_reverse (fixture->b);
for (i = 0; i < len; i++)
g_assert_cmphex (glyphs[i].codepoint, ==, utf32[len-i]);
hb_buffer_reverse (fixture->b);
for (i = 0; i < len; i++)
g_assert_cmphex (glyphs[i].codepoint, ==, utf32[1+i]);
/* reverse_clusters works same as reverse for now since each codepoint is
* in its own cluster */
hb_buffer_reverse_clusters (fixture->b);
for (i = 0; i < len; i++)
g_assert_cmphex (glyphs[i].codepoint, ==, utf32[len-i]);
hb_buffer_reverse_clusters (fixture->b);
for (i = 0; i < len; i++)
g_assert_cmphex (glyphs[i].codepoint, ==, utf32[1+i]);
/* now form a cluster and test again */
glyphs[2].cluster = glyphs[1].cluster;
/* reverse, test, and reverse back */
hb_buffer_reverse (fixture->b);
for (i = 0; i < len; i++)
g_assert_cmphex (glyphs[i].codepoint, ==, utf32[len-i]);
hb_buffer_reverse (fixture->b);
for (i = 0; i < len; i++)
g_assert_cmphex (glyphs[i].codepoint, ==, utf32[1+i]);
/* reverse_clusters twice still should return the original string,
* but when applied once, the 1-2 cluster should be retained. */
hb_buffer_reverse_clusters (fixture->b);
for (i = 0; i < len; i++) {
unsigned int j = len-1-i;
if (j == 1)
j = 2;
else if (j == 2)
j = 1;
g_assert_cmphex (glyphs[i].codepoint, ==, utf32[1+j]);
}
hb_buffer_reverse_clusters (fixture->b);
for (i = 0; i < len; i++)
g_assert_cmphex (glyphs[i].codepoint, ==, utf32[1+i]);
/* test setting length */
/* enlarge */
g_assert (hb_buffer_set_length (fixture->b, 10));
glyphs = hb_buffer_get_glyph_infos (fixture->b, NULL);
g_assert_cmpint (hb_buffer_get_length (fixture->b), ==, 10);
for (i = 0; i < 5; i++)
g_assert_cmphex (glyphs[i].codepoint, ==, utf32[1+i]);
for (i = 5; i < 10; i++)
g_assert_cmphex (glyphs[i].codepoint, ==, 0);
/* shrink */
g_assert (hb_buffer_set_length (fixture->b, 3));
glyphs = hb_buffer_get_glyph_infos (fixture->b, NULL);
g_assert_cmpint (hb_buffer_get_length (fixture->b), ==, 3);
for (i = 0; i < 3; i++)
g_assert_cmphex (glyphs[i].codepoint, ==, utf32[1+i]);
g_assert (hb_buffer_allocation_successful (fixture->b));
/* test reset clears content */
hb_buffer_reset (fixture->b);
g_assert_cmpint (hb_buffer_get_length (fixture->b), ==, 0);
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}
static void
test_buffer_positions (fixture_t *fixture, gconstpointer user_data)
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{
unsigned int i, len, len2;
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hb_glyph_position_t *positions;
/* Without shaping, positions should all be zero */
len = hb_buffer_get_length (fixture->b);
positions = hb_buffer_get_glyph_positions (fixture->b, NULL); /* test NULL */
positions = hb_buffer_get_glyph_positions (fixture->b, &len2);
g_assert_cmpint (len, ==, len2);
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for (i = 0; i < len; i++) {
g_assert_cmpint (0, ==, positions[i].x_advance);
g_assert_cmpint (0, ==, positions[i].y_advance);
g_assert_cmpint (0, ==, positions[i].x_offset);
g_assert_cmpint (0, ==, positions[i].y_offset);
g_assert_cmpint (0, ==, positions[i].var.i32);
}
/* test reset clears content */
hb_buffer_reset (fixture->b);
g_assert_cmpint (hb_buffer_get_length (fixture->b), ==, 0);
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}
static void
test_buffer_allocation (fixture_t *fixture, gconstpointer user_data)
{
g_assert_cmpint (hb_buffer_get_length (fixture->b), ==, 0);
g_assert (hb_buffer_pre_allocate (fixture->b, 100));
g_assert_cmpint (hb_buffer_get_length (fixture->b), ==, 0);
g_assert (hb_buffer_allocation_successful (fixture->b));
/* lets try a huge allocation, make sure it fails */
g_assert (!hb_buffer_pre_allocate (fixture->b, (unsigned int) -1));
g_assert_cmpint (hb_buffer_get_length (fixture->b), ==, 0);
g_assert (!hb_buffer_allocation_successful (fixture->b));
/* small one again */
g_assert (hb_buffer_pre_allocate (fixture->b, 50));
g_assert_cmpint (hb_buffer_get_length (fixture->b), ==, 0);
g_assert (!hb_buffer_allocation_successful (fixture->b));
hb_buffer_reset (fixture->b);
g_assert (hb_buffer_allocation_successful (fixture->b));
/* all allocation and size */
g_assert (!hb_buffer_pre_allocate (fixture->b, ((unsigned int) -1) / 20 + 1));
g_assert (!hb_buffer_allocation_successful (fixture->b));
hb_buffer_reset (fixture->b);
g_assert (hb_buffer_allocation_successful (fixture->b));
/* technically, this one can actually pass on 64bit machines, but
* I'm doubtful that any malloc allows 4GB allocations at a time.
* But let's only enable it on a 32-bit machine. */
if (sizeof (long) == 4) {
g_assert (!hb_buffer_pre_allocate (fixture->b, ((unsigned int) -1) / 20 - 1));
g_assert (!hb_buffer_allocation_successful (fixture->b));
}
hb_buffer_reset (fixture->b);
g_assert (hb_buffer_allocation_successful (fixture->b));
}
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int
main (int argc, char **argv)
{
int i;
g_test_init (&argc, &argv, NULL);
for (i = 0; i < BUFFER_NUM_TYPES; i++) {
#define TEST_ADD(path, func) \
G_STMT_START { \
char *s = g_strdup_printf ("%s/%s", path, buffer_names[i]); \
g_test_add (s, fixture_t, GINT_TO_POINTER (i), fixture_init, func, fixture_fini); \
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g_free (s); \
} G_STMT_END
TEST_ADD ("/buffer/properties", test_buffer_properties);
TEST_ADD ("/buffer/contents", test_buffer_contents);
TEST_ADD ("/buffer/positions", test_buffer_positions);
#undef TEST_ADD
}
g_test_add ("/buffer/allocation", fixture_t, GINT_TO_POINTER (BUFFER_EMPTY), fixture_init, test_buffer_allocation, fixture_fini);
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/* XXX test invalid UTF-8 / UTF-16 text input (also overlong sequences) */
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return g_test_run();
}