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/*
* 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-shape.h */
/*
* This test provides a framework to test aspects of hb_shape() that are
* font-independent. Please add tests for any feature that fits that
* description.
*/
/* TODO Make this test data-driven and add some real test data */
/* TODO Test positions too. And test non-native direction. Test commit 2e18c6dbdfb */
static const char test_data[] = "test\0data";
static hb_position_t
glyph_h_advance_func (hb_font_t *font, void *font_data,
hb_codepoint_t glyph,
void *user_data)
{
switch (glyph) {
case 1: return 10;
case 2: return 6;
case 3: return 5;
}
return 0;
}
static hb_bool_t
glyph_func (hb_font_t *font, void *font_data,
hb_codepoint_t unicode, hb_codepoint_t variant_selector,
hb_codepoint_t *glyph,
void *user_data)
{
switch (unicode) {
case 'T': *glyph = 1; return TRUE;
case 'e': *glyph = 2; return TRUE;
case 's': *glyph = 3; return TRUE;
}
return FALSE;
}
static hb_position_t
glyph_h_kerning_func (hb_font_t *font, void *font_data,
hb_codepoint_t left, hb_codepoint_t right,
void *user_data)
{
if (left == 1 && right == 2)
return -2;
return 0;
}
static const char TesT[] = "TesT";
static void
test_shape (void)
{
hb_blob_t *blob;
hb_face_t *face;
hb_font_funcs_t *ffuncs;
hb_font_t *font;
hb_buffer_t *buffer;
unsigned int len;
hb_glyph_info_t *glyphs;
hb_glyph_position_t *positions;
blob = hb_blob_create (test_data, sizeof (test_data), HB_MEMORY_MODE_READONLY, NULL, NULL);
face = hb_face_create (blob, 0);
hb_blob_destroy (blob);
font = hb_font_create (face);
hb_face_destroy (face);
hb_font_set_scale (font, 10, 10);
ffuncs = hb_font_funcs_create ();
hb_font_funcs_set_glyph_h_advance_func (ffuncs, glyph_h_advance_func, NULL, NULL);
hb_font_funcs_set_glyph_func (ffuncs, glyph_func, malloc (10), free);
hb_font_funcs_set_glyph_h_kerning_func (ffuncs, glyph_h_kerning_func, NULL, NULL);
hb_font_set_funcs (font, ffuncs, NULL, NULL);
hb_font_funcs_destroy (ffuncs);
buffer = hb_buffer_create ();
hb_buffer_set_direction (buffer, HB_DIRECTION_LTR);
hb_buffer_add_utf8 (buffer, TesT, 4, 0, 4);
hb_shape (font, buffer, NULL, 0);
len = hb_buffer_get_length (buffer);
glyphs = hb_buffer_get_glyph_infos (buffer, NULL);
positions = hb_buffer_get_glyph_positions (buffer, NULL);
{
const hb_codepoint_t output_glyphs[] = {1, 2, 3, 1};
const hb_position_t output_x_advances[] = {9, 5, 5, 10};
const hb_position_t output_x_offsets[] = {0, -1, 0, 0};
unsigned int i;
g_assert_cmpint (len, ==, 4);
for (i = 0; i < len; i++) {
g_assert_cmphex (glyphs[i].codepoint, ==, output_glyphs[i]);
g_assert_cmphex (glyphs[i].cluster, ==, i);
}
for (i = 0; i < len; i++) {
g_assert_cmpint (output_x_advances[i], ==, positions[i].x_advance);
g_assert_cmpint (output_x_offsets [i], ==, positions[i].x_offset);
g_assert_cmpint (0, ==, positions[i].y_advance);
g_assert_cmpint (0, ==, positions[i].y_offset);
}
}
hb_buffer_destroy (buffer);
hb_font_destroy (font);
}
static void
test_shape_clusters (void)
{
hb_face_t *face;
hb_font_t *font;
hb_buffer_t *buffer;
unsigned int len;
hb_glyph_info_t *glyphs;
face = hb_face_create (NULL, 0);
font = hb_font_create (face);
hb_face_destroy (face);
buffer = hb_buffer_create ();
hb_buffer_set_direction (buffer, HB_DIRECTION_LTR);
{
/* https://code.google.com/p/chromium/issues/detail?id=497578 */
hb_codepoint_t test[] = {0xFFF1, 0xF0B6};
hb_buffer_add_utf32 (buffer, test, 2, 0, 2);
}
hb_shape (font, buffer, NULL, 0);
len = hb_buffer_get_length (buffer);
glyphs = hb_buffer_get_glyph_infos (buffer, NULL);
{
const hb_codepoint_t output_glyphs[] = {0};
const hb_position_t output_clusters[] = {0};
unsigned int i;
g_assert_cmpint (len, ==, 1);
for (i = 0; i < len; i++) {
g_assert_cmphex (glyphs[i].codepoint, ==, output_glyphs[i]);
g_assert_cmphex (glyphs[i].cluster, ==, output_clusters[i]);
}
}
hb_buffer_destroy (buffer);
hb_font_destroy (font);
}
static void
test_shape_list (void)
{
const char **shapers = hb_shape_list_shapers ();
unsigned int i;
for (i = 0; shapers[i]; i++)
;
g_assert_cmpint (i, >, 1);
g_assert (!strcmp (shapers[i - 1], "fallback"));
}
int
main (int argc, char **argv)
{
hb_test_init (&argc, &argv);
hb_test_add (test_shape);
hb_test_add (test_shape_clusters);
/* TODO test fallback shaper */
/* TODO test shaper_full */
hb_test_add (test_shape_list);
return hb_test_run();
}
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