[test] Test hb-buffer.h

test/Makefile.am

@@ -1,12 +1,18 @@
 include Makefile.decl
 
+NULL =
+
 if HAVE_GLIB
 AM_CPPFLAGS = -I$(top_srcdir)/src/ $(GLIB_CFLAGS)
 LDADD = $(top_builddir)/src/libharfbuzz.la $(GLIB_LIBS)
 
 check_PROGRAMS = $(TEST_PROGS)
 
-TEST_PROGS += test-types
+TEST_PROGS += \
+	test-buffer \
+	test-types \
+	$(NULL)
+
 
 
 else

test/test-buffer.c

@@ -0,0 +1,195 @@
+/*
+ * Copyright (C) 2010  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"
+
+/* 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;
+
+static void
+fixture_init (Fixture *fixture, gconstpointer user_data)
+{
+  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_glyph (fixture->b, utf32[i], 1, i);
+      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 *fixture, gconstpointer user_data)
+{
+  hb_buffer_destroy (fixture->b);
+}
+
+
+static void
+test_buffer_properties (Fixture *fixture, gconstpointer user_data)
+{
+  /* TODO check unicode_funcs */
+
+  g_assert (hb_buffer_get_direction (fixture->b) == HB_DIRECTION_LTR);
+  g_assert (hb_buffer_get_script (fixture->b) == HB_SCRIPT_COMMON);
+  g_assert (hb_buffer_get_language (fixture->b) == NULL);
+
+  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"));
+}
+
+static void
+test_buffer_contents (Fixture *fixture, gconstpointer user_data)
+{
+  unsigned int i, len;
+  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);
+  g_assert_cmpint (len, ==, 5);
+
+  glyphs = hb_buffer_get_glyph_infos (fixture->b);
+
+  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);
+    g_assert_cmphex (glyphs[i].mask,      ==, 1);
+    g_assert_cmphex (glyphs[i].var1.u32,  ==, 0);
+    g_assert_cmphex (glyphs[i].var2.u32,  ==, 0);
+  }
+
+  hb_buffer_clear (fixture->b);
+  g_assert_cmpint (hb_buffer_get_length (fixture->b), ==, 0);
+}
+
+static void
+test_buffer_positions (Fixture *fixture, gconstpointer user_data)
+{
+  unsigned int i, len;
+  hb_glyph_position_t *positions;
+
+  /* Without shaping, positions should all be zero */
+  positions = hb_buffer_get_glyph_positions (fixture->b);
+  len = hb_buffer_get_length (fixture->b);
+  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);
+  }
+}
+
+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, GINT_TO_POINTER (i), fixture_init, func, fixture_fini); \
+      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
+  }
+
+  /* XXX test invalid UTF-8 / UTF-16 text input */
+
+  return g_test_run();
+}