Run pixel tests via automated script.

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 generate_and_test(input_filename, source_dir, working_dir,
                       fixup_path, pdfium_test_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')
-  txt_path = os.path.join(working_dir, input_root + '.txt')
-  expected_path = os.path.join(source_dir, input_root + '_expected.txt')
+  actual_path_template = os.path.join(working_dir, input_root + '.pdf.%d.ppm')
+  expected_path_template = os.path.join(source_dir,
+                                        input_root + '_expected.pdf.%d.ppm')
   try:
     subprocess.check_call(
         [fixup_path, '--output-dir=' + working_dir, input_path])
-    with open(txt_path, 'w') as outfile:
-      subprocess.check_call([pdfium_test_path, pdf_path], stdout=outfile)
-    subprocess.check_call(['diff', expected_path, txt_path])
+    subprocess.check_call([pdfium_test_path, '--ppm', pdf_path])
+    i = 0;
+    while True:
+      expected_path = expected_path_template % i;
+      actual_path = actual_path_template % i;
+      if not os.path.exists(expected_path):
+        break
+      subprocess.check_call(['diff', expected_path, actual_path])
+      i += 1
   except subprocess.CalledProcessError as e:
     print "FAILURE: " + input_filename + "; " + str(e)
 
 def main():
   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
       os.path.basename(testing_dir) != 'testing'):
     print 'Confused, can not find pdfium root directory, aborting.'
     return 1
 
   # Other scripts are found in the same directory as this one.
   fixup_path = os.path.join(my_dir, 'fixup_pdf_template.py')
 
-  # test files are in .../pdfium/testing/resources/javascript.
-  source_dir = os.path.join(testing_dir, 'resources', 'javascript')
+  # test files are in .../pdfium/testing/resources/pixel.
+  source_dir = os.path.join(testing_dir, 'resources', 'pixel')
 
   # Find path to build directory.  This depends on whether this is a
   # standalone build vs. a build as part of a chromium checkout. For
   # standalone, we expect a path like .../pdfium/out/Debug, but for
   # chromium, we expect a path like .../src/out/Debug two levels
   # higher (to skip over the third_party/pdfium path component under
   # which chromium sticks pdfium).
   base_dir = pdfium_dir
   one_up_dir = os.path.dirname(base_dir)
   two_up_dir = os.path.dirname(one_up_dir)
   if (os.path.basename(two_up_dir) == 'src' and
       os.path.basename(one_up_dir) == 'third_party'):
     base_dir = two_up_dir
   build_dir = os.path.join(base_dir, options.build_dir)
 
   # Compiled binaries are found under the build path.
   pdfium_test_path = os.path.join(build_dir, 'pdfium_test')
   if sys.platform.startswith('win'):
     pdfium_test_path = pdfium_test_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', 'javascript')
+  working_dir = os.path.join(gen_dir, 'testing', 'pixel')
   if not os.path.exists(working_dir):
     os.makedirs(working_dir)
 
   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):
         generate_and_test(input_filename, source_dir, working_dir,
                           fixup_path, pdfium_test_path)
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())