Merge to XFA: Allow running individual tests.

testing/tools/run_javascript_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
@@ skipping 24 matching lines @@
   except subprocess.CalledProcessError as e:
     print "FAILURE: " + input_filename + "; " + str(e)
     return False
   return True
 
 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()
+
   finder = common.DirectoryFinder(options.build_dir)
   fixup_path = finder.ScriptPath('fixup_pdf_template.py')
   text_diff_path = finder.ScriptPath('text_diff.py')
   source_dir = finder.TestingDir(os.path.join('resources', 'javascript'))
   pdfium_test_path = finder.ExecutablePath('pdfium_test')
   if not os.path.exists(pdfium_test_path):
     print "FAILURE: Can't find test executable '%s'" % pdfium_test_path
     print "Use --build-dir to specify its location."
     return 1
   working_dir = finder.WorkingDir(os.path.join('testing', 'javascript'))
   if not os.path.exists(working_dir):
     os.makedirs(working_dir)
 
+  input_files = []
+  if len(args):
+    for file_name in args:
+      input_files.append(file_name.replace(".pdf", ".in"))
+  else:
+    input_files = os.listdir(source_dir)
+
   failures = []
   input_file_re = re.compile('^[a-zA-Z0-9_.]+[.]in$')
-  for input_filename in os.listdir(source_dir):
+  for input_filename in input_files:
     if input_file_re.match(input_filename):
       input_path = os.path.join(source_dir, input_filename)
       if os.path.isfile(input_path):
         if not generate_and_test(input_filename, source_dir, working_dir,
                                  fixup_path, pdfium_test_path, text_diff_path):
           failures.append(input_path)
 
   if failures:
     failures.sort()
     print '\n\nSummary of Failures:'
     for failure in failures:
       print failure
     return 1
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())