Add hb-diff-stat

test/shaping/Makefile.am

@@ -13,6 +13,7 @@ EXTRA_DIST += \
 	hb-diff \
 	hb-diff-colorize \
 	hb-diff-filter-failures \
+	hb-diff-stat \
 	hb-manifest-read \
 	hb-manifest-update \
 	hb-unicode-decode \

test/shaping/hb-diff-stat

@@ -0,0 +1,5 @@
+#!/usr/bin/python
+
+from hb_test_tools import *
+
+UtilMains.process_multiple_files (DiffSinks.print_stat)

test/shaping/hb_test_tools.py

@@ -151,9 +151,23 @@ class DiffFilters:
 	@staticmethod
 	def filter_failures (f):
 		for lines in DiffHelpers.separate_test_cases (f):
-			if any (l[0] != ' ' for l in lines):
+			if not DiffHelpers.test_passed (lines):
 				for l in lines: yield l
 
+class DiffSinks:
+
+	@staticmethod
+	def print_stat (f):
+		passed = 0
+		failed = 0
+		for lines in DiffHelpers.separate_test_cases (f):
+			if DiffHelpers.test_passed (lines):
+				passed += 1
+			else:
+				failed += 1
+		total = passed + failed
+		print "%d out of %d tests passed.  %d failed (%g%%)" % (passed, total, failed, 100. * failed / total)
+
 class DiffHelpers:
 
 	@staticmethod
@@ -179,6 +193,10 @@ class DiffHelpers:
 			acc.append (l)
 		if acc: yield acc
 
+	@staticmethod
+	def test_passed (lines):
+		return all (l[0] == ' ' for l in lines)
+
 
 class FilterHelpers: