[tests] Add tests for platform shapers

Fixes https://github.com/harfbuzz/harfbuzz/issues/3115

test/shape/data/in-house/meson.build

@@ -1,4 +1,4 @@
-in_house_tests = [
+in_house_tests_base = [
   'aat-morx.tests',
   'aat-trak.tests',
   'arabic-fallback-shaping.tests',
@@ -67,3 +67,15 @@ in_house_tests = [
   'vertical.tests',
   'zero-width-marks.tests',
 ]
+
+in_house_tests_coretext = [
+  'coretext.tests',
+]
+
+in_house_tests_uniscribe = [
+  'uniscribe.tests',
+]
+
+in_house_tests_directwrite = [
+  'directwrite.tests',
+]

test/shape/data/in-house/tests/coretext.tests

@@ -0,0 +1 @@
+../fonts/872d2955d326bd6676a06f66b8238ebbaabc212f.ttf;--shaper=coretext;U+0628,U+0628,U+0628;[uni0628.fina=2+883|uni0628.medi_High=1+244|uni0628.init_High=0+233]

test/shape/data/in-house/tests/directwrite.tests

@@ -0,0 +1 @@
+../fonts/872d2955d326bd6676a06f66b8238ebbaabc212f.ttf;--shaper=directwrite;U+0628,U+0628,U+0628;[uni0628.fina=2+883|uni0628.medi_High=1+244|uni0628.init_High=0+233]

test/shape/data/in-house/tests/uniscribe.tests

@@ -0,0 +1 @@
+../fonts/872d2955d326bd6676a06f66b8238ebbaabc212f.ttf;--shaper=uniscribe;U+0628,U+0628,U+0628;[uni0628.fina=2+883|uni0628.medi_High=1+244|uni0628.init_High=0+233]

test/shape/meson.build

@@ -8,6 +8,17 @@ shaping_run_tests_py = find_program('run-tests.py')
 env = environment()
 env.set('HAVE_FREETYPE', '@0@'.format(conf.get('HAVE_FREETYPE', 0)))
 
+in_house_tests = in_house_tests_base
+if conf.get('HAVE_CORETEXT', 0) == 1
+  in_house_tests += in_house_tests_coretext
+endif
+if conf.get('HAVE_UNISCRIBE', 0) == 1
+  in_house_tests += in_house_tests_uniscribe
+endif
+if conf.get('HAVE_DIRECTWRITE', 0) == 1
+  in_house_tests += in_house_tests_directwrite
+endif
+
 foreach file_name : in_house_tests
   test_name = file_name.split('.')[0]