[subset] Add a test for CFF2 instancing.

Adds option to disable the fonttools comparison check in the test. This is needed since CFF2 instancing is not yet supported in fonttools.

test/subset/data/Makefile.am

@@ -60,6 +60,7 @@ EXTRA_DIST += \
 	expected/full_instance \
 	expected/instance_feature_variations \
 	expected/instantiate_glyf \
+	expected/instantiate_cff2 \
 	expected/pin_all_at_default \
 	expected/instance_no_double_free \
 	expected/mvar_full_instance \

test/subset/data/Makefile.sources

@@ -51,6 +51,7 @@ TESTS = \
 	tests/full_instance.tests \
 	tests/instance_feature_variations.tests \
 	tests/instantiate_glyf.tests \
+	tests/instantiate_cff2.tests \
 	tests/pin_all_at_default.tests \
 	tests/instance_no_double_free.tests \
 	tests/mvar_full_instance.tests \

test/subset/data/tests/instantiate_cff2.tests

@@ -0,0 +1,14 @@
+FONTS:
+AdobeVFPrototype.otf
+
+PROFILES:
+default.txt
+
+SUBSETS:
+*
+
+INSTANCES:
+wght=650,CNTR=50
+
+OPTIONS:
+no_fonttools

test/subset/generate-expected-outputs.py

@@ -27,9 +27,9 @@ def strip_check_sum (ttx_string):
 		       ttx_string, count=1)
 
 
-def generate_expected_output(input_file, unicodes, profile_flags, instance_flags, output_directory, font_name):
+def generate_expected_output(input_file, unicodes, profile_flags, instance_flags, output_directory, font_name, no_fonttools):
 	input_path = input_file
-	if instance_flags:
+	if not no_fonttools and instance_flags:
 		instance_path = os.path.join(tempfile.mkdtemp (), font_name)
 		args = ["fonttools", "varLib.instancer",
 			"--no-overlap-flag",
@@ -50,12 +50,13 @@ def generate_expected_output(input_file, unicodes, profile_flags, instance_flags
 		     "--unicodes=%s" % unicodes,
 		     "--output-file=%s" % fonttools_path])
 	args.extend(profile_flags)
-	check_call(args)
+	if not no_fonttools:
+		check_call(args)
 
-	with io.StringIO () as fp:
-		with TTFont (fonttools_path) as font:
-			font.saveXML (fp)
-		fonttools_ttx = strip_check_sum (fp.getvalue ())
+		with io.StringIO () as fp:
+			with TTFont (fonttools_path) as font:
+				font.saveXML (fp)
+				fonttools_ttx = strip_check_sum (fp.getvalue ())
 
 	harfbuzz_path = os.path.join(tempfile.mkdtemp (), font_name)
 	args = [
@@ -75,7 +76,7 @@ def generate_expected_output(input_file, unicodes, profile_flags, instance_flags
 			font.saveXML (fp)
 		harfbuzz_ttx = strip_check_sum (fp.getvalue ())
 
-	if harfbuzz_ttx != fonttools_ttx:
+	if not no_fonttools and harfbuzz_ttx != fonttools_ttx:
 		for line in unified_diff (fonttools_ttx.splitlines (1), harfbuzz_ttx.splitlines (1), fonttools_path, harfbuzz_path):
 			sys.stdout.write (line)
 		sys.stdout.flush ()
@@ -101,6 +102,7 @@ for path in args:
 		for test in test_suite.tests():
 			unicodes = test.unicodes()
 			font_name = test.get_font_name()
+			no_fonttools = ("no_fonttools" in test.options)
 			print("Creating subset %s/%s" % (output_directory, font_name))
 			generate_expected_output(test.font_path, unicodes, test.get_profile_flags(),
-						 test.get_instance_flags(), output_directory, font_name)
+						 test.get_instance_flags(), output_directory, font_name, no_fonttools=no_fonttools)

test/subset/meson.build

@@ -52,6 +52,7 @@ tests = [
   '32bit_var_store',
   'pin_all_at_default',
   'instantiate_glyf',
+  'instantiate_cff2',
   'full_instance',
   'instance_feature_variations',
   'instance_no_double_free',

test/subset/subset_test_suite.py

@@ -5,11 +5,12 @@ import os
 # A single test in a subset test suite. Identifies a font
 # a subsetting profile, and a subset to be cut.
 class Test:
-	def __init__(self, font_path, profile_path, subset, instance):
+	def __init__(self, font_path, profile_path, subset, instance, options):
 		self.font_path = font_path
 		self.profile_path = profile_path
 		self.subset = subset
 		self.instance = instance
+		self.options = options
 
 	def unicodes(self):
 		import re
@@ -70,6 +71,7 @@ class SubsetTestSuite:
 		self.profiles = []
 		self.subsets = []
 		self.instances = []
+		self.options = []
 		self._parse(definition)
 
 	def get_output_directory(self):
@@ -90,11 +92,11 @@ class SubsetTestSuite:
 			for profile in self.profiles:
 				profile = os.path.join(self._base_path(), "profiles", profile)
 				for subset in self.subsets:
-					if self.instances: 
+					if self.instances:
 						for instance in self.instances:
-							yield Test(font, profile, subset, instance)
+							yield Test(font, profile, subset, instance, options=self.options)
 					else:
-						yield Test(font, profile, subset, "")
+						yield Test(font, profile, subset, "", options=self.options)
 
 	def _base_path(self):
 		return os.path.dirname(os.path.dirname(self.test_path))
@@ -104,7 +106,8 @@ class SubsetTestSuite:
 				"FONTS:": self.fonts,
 				"PROFILES:": self.profiles,
 				"SUBSETS:": self.subsets,
-				"INSTANCES:": self.instances
+				"INSTANCES:": self.instances,
+				"OPTIONS:": self.options,
 		}
 
 		current_destination = None