Suppress our one pixel test on mac since it diffs

testing/tools/run_pixel_tests.py

 #!/usr/bin/env python
 # Copyright 2015 The PDFium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import optparse
 import os
 import re
 import subprocess
 import sys
 
 # Nomenclature:
 #   x_root - "x"
 #   x_filename - "x.ext"
 #   x_path - "path/to/a/b/c/x.ext"
 #   c_dir - "path/to/a/b/c"
 
+def extract_suppressions(filename):
+  with open(filename) as f:
+    suppressions = [y for y in [
+      x.split('#')[0].strip() for x in f.readlines()] if y]
+  return suppressions
+
 def generate_and_test(input_filename, source_dir, working_dir,
                       fixup_path, pdfium_test_path, pdfium_diff_path):
   input_root, _ = os.path.splitext(input_filename)
   input_path = os.path.join(source_dir, input_root + '.in')
   pdf_path = os.path.join(working_dir, input_root + '.pdf')
   actual_path_template = os.path.join(working_dir, input_root + '.pdf.%d.png')
   expected_path_template = os.path.join(source_dir,
                                         input_root + '_expected.pdf.%d.png')
   try:
     sys.stdout.flush()
@@ skipping 11 matching lines @@
       print "Checking " + actual_path
       sys.stdout.flush()
       subprocess.check_call([pdfium_diff_path, expected_path, actual_path])
       i += 1
   except subprocess.CalledProcessError as e:
     print "FAILURE: " + input_filename + "; " + str(e)
     return False
   return True
 
 def main():
+  if sys.platform.startswith('linux'):
+    os_name = 'linux'
+  elif sys.platform.startswith('win'):
+    os_name = 'win'
+  elif sys.platform.startswith('darwin'):
+    os_name = 'mac'
+  else:
+    print 'Confused, can not determine OS, aborting.'
+    return 1
+
   parser = optparse.OptionParser()
   parser.add_option('--build-dir', default=os.path.join('out', 'Debug'),
                     help='relative path from the base source directory')
   options, args = parser.parse_args()
 
   # Expect |my_dir| to be .../pdfium/testing/tools.
   my_dir = os.path.dirname(os.path.realpath(__file__))
   testing_dir = os.path.dirname(my_dir)
   pdfium_dir = os.path.dirname(testing_dir)
   if (os.path.basename(my_dir) != 'tools' or
@@ skipping 28 matching lines @@
     pdfium_test_path = pdfium_test_path + '.exe'
     pdfium_diff_path = pdfium_diff_path + '.exe'
   # TODO(tsepez): Mac may require special handling here.
 
   # Place generated files under the build directory, not source directory.
   gen_dir = os.path.join(build_dir, 'gen', 'pdfium')
   working_dir = os.path.join(gen_dir, 'testing', 'pixel')
   if not os.path.exists(working_dir):
     os.makedirs(working_dir)
 
+  suppression_list = extract_suppressions(
+    os.path.join(testing_dir, 'SUPPRESSIONS'))
+
+  platform_suppression_filename = 'SUPPRESSIONS_%s' % os_name
+  platform_suppression_list = extract_suppressions(
+    os.path.join(testing_dir, platform_suppression_filename))
+
   failures = []
   input_file_re = re.compile('^[a-zA-Z0-9_.]+[.]in$')
   for input_filename in os.listdir(source_dir):
     if input_file_re.match(input_filename):
       input_path = os.path.join(source_dir, input_filename)
       if os.path.isfile(input_path):
+        if input_filename in suppression_list:
+          print "Not running %s, found in SUPPRESSIONS file" % input_filename
+          continue
+        if input_filename in platform_suppression_list:
+          print ("Not running %s, found in %s file" %
+                 (input_filename, platform_suppression_filename))
+          continue
         if not generate_and_test(input_filename, source_dir, working_dir,
                                  fixup_path, pdfium_test_path, pdfium_diff_path):
           failures.append(input_path)
 
   if failures:
     print '\n\nSummary of Failures:'
     for failure in failures:
       print failure
     return 1
   return 0
 
 if __name__ == '__main__':
   sys.exit(main())