added CFF glyph extents API test

test/api/Makefile.am

@@ -78,6 +78,7 @@ if HAVE_OT
 TEST_PROGS += \
 	test-ot-color \
 	test-ot-tag \
+	test-ot-extents-cff \
 	$(NULL)
 
 if HAVE_PTHREAD

test/api/test-ot-extents-cff.c

+/*
+ * Copyright © 2018 Adobe Systems Incorporated.
+ *
+ *  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.
+ *
+ * Adobe Author(s): Michiharu Ariza
+ */
+
+#include "hb-test.h"
+#include <hb-ot.h>
+
+/* Unit tests for CFF/CFF2 glyph extents */
+
+static void
+test_extents_cff1 (void)
+{
+  hb_blob_t *blob = hb_blob_create_from_file ("fonts/SourceSansPro-Regular.abc.otf");
+  g_assert (blob);
+  hb_face_t *face = hb_face_create (blob, 0);
+  hb_blob_destroy (blob);
+  g_assert (face);
+  hb_font_t *font = hb_font_create (face);
+  hb_face_destroy (face);
+  g_assert (font);
+  hb_ot_font_set_funcs (font);
+
+  hb_glyph_extents_t  extents;
+  hb_bool_t result = hb_font_get_glyph_extents (font, 1, &extents);
+  g_assert (result);
+
+  g_assert_cmpint (extents.x_bearing, ==, 52);
+  g_assert_cmpint (extents.y_bearing, ==, 498);
+  g_assert_cmpint (extents.width, ==, 381);
+  g_assert_cmpint (extents.height, ==, -510);
+
+  hb_font_destroy (font);
+}
+
+int
+main (int argc, char **argv)
+{
+  hb_test_init (&argc, &argv);
+
+  hb_test_add (test_extents_cff1);
+
+  return hb_test_run ();
+}