Add a basic test for hb-coretext api

This tests what would be my minimum assumption
about this api. It was written blindly.

test/api/Makefile.am

@@ -154,6 +154,12 @@ test_ft_LDADD = $(LDADD) $(FREETYPE_LIBS)
 test_ft_CPPFLAGS = $(AM_CPPFLAGS) $(FREETYPE_CFLAGS)
 endif # HAVE_FREETYPE
 
+if HAVE_CORETEXT
+TEST_PROGS += \
+	test-coretext \
+	$(NULL)
+endif # HAVE_CORETEXT
+
 # Tests for header compilation
 test_cplusplus_SOURCES = test-cplusplus.cc
 test_c_CPPFLAGS = $(AM_CPPFLAGS)

test/api/meson.build

@@ -68,6 +68,12 @@ if conf.get('HAVE_FREETYPE', 0) == 1
   ]
 endif
 
+if conf.get('HAVE_CORETEXT', 0) == 1
+  tests += [
+    'test-coretext.c',
+  ]
+endif
+
 if conf.get('HAVE_FREETYPE', 0) == 1 and conf.get('HAVE_PTHREAD', 0) == 1
   tests += 'test-multithread.c'
 endif

test/api/test-coretext.c

@@ -0,0 +1,79 @@
+/*
+ * Copyright © 2022 Red Hat, 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.
+ *
+ * Author: Matthias Clasen
+ */
+
+
+#include "hb-test.h"
+
+#include "hb-coretext.h"
+
+CTFontRef
+get_ctfont (void)
+{
+  CTFontCollectionRef collection;
+  CFArrayRef ctfaces;
+  CTFontDescriptorRef desc;
+  CTFontRef ctfont;
+
+  collection = CTFontCollectionCreateFromAvailableFonts (0);
+  ctfaces = CTFontCollectionCreateMatchingFontDescriptors (collection);
+
+  desc = CFArrayGetValueAtIndex (ctfaces, 0);
+  ctfont = CTFontCreateWithFontDescriptor (desc, 0.0, NULL);
+
+  return ctfont;
+}
+
+static void
+test_native_coretext_basic (void)
+{
+  CTFontRef ctfont;
+  hb_font_t *font;
+  CTFontRef ctfont2;
+
+  ctfont = get_ctfont ();
+
+  g_assert_nonnull (ctfont);
+
+  font = hb_coretext_font_create (ctfont);
+
+  ctfont2 = hb_coretext_font_get_ct_font (font);
+
+  g_assert_true (ctfont2 == ctfont);
+
+  hb_font_destroy (font);
+
+  CFRelease (ctfont);
+}
+
+int
+main (int argc, char **argv)
+{
+  hb_test_init (&argc, &argv);
+
+  hb_test_add (test_native_coretext_basic);
+
+  return hb_test_run ();
+}