Adds a way to specify test data files for unittests.

build/copy_test_data.py

+#!/usr/bin/env python
+# Copyright (c) 2012 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Copies test data files or directories into a given output directory."""
+
+import optparse
+import os
+import shutil
+import sys
+
+class WrongNumberOfArgumentsException(Exception):
+  pass
+
+def ListFilesForPath(path):
+  """Returns a list of all the files under a given path."""
+  output = []
+  # Files get returned without modification.
+  if not os.path.isdir(path):
+    output.append(path)
+    return output
+
+  # Directories get recursively expanded.
+  contents = os.listdir(path)
+  for item in contents:
+    full_path = os.path.join(path, item)
+    output.extend(ListFilesForPath(full_path))
+  return output
+
+def CalcInputs(inputs):
+  """Computes the full list of input files for a set of command-line arguments.
+  """
+  # |inputs| is a list of strings, each of which may contain muliple paths
+  # separated by spaces.
+  output = []
+  for input in inputs:
+    tokens = input.split()
+    for token in tokens:
+      output.extend(ListFilesForPath(token))
+  return output
+
+def CopyFiles(relative_filenames, output_basedir):
+  """Copies files to the given output directory."""
+  for file in relative_filenames:
+    relative_dirname = os.path.dirname(file)
+    output_dir = os.path.join(output_basedir, relative_dirname)
+    if not os.path.exists(output_dir):

[Mark Mentovai, 2012/07/16 17:48:45]

This doesn’t really handle the case where what was formerly a file turns into a
directory, or the other way around.

+      os.makedirs(output_dir)
+    output_filename = os.path.join(output_basedir, file)
+    shutil.copy(file, output_filename)
+
+def DoMain(argv):
+  parser = optparse.OptionParser()
+  usage = 'Usage: %prog -o <output_dir> [--inputs] [--outputs] <input_files>'
+  parser.set_usage(usage)
+  parser.add_option('-o', dest='output_dir')
+  parser.add_option('--inputs', action='store_true', dest='list_inputs')
+  parser.add_option('--outputs', action='store_true', dest='list_outputs')
+  options, arglist = parser.parse_args(argv)
+
+  if len(arglist) == 0:
+    raise WrongNumberOfArgumentsException('<input_files> required.')
+
+  files_to_copy = CalcInputs(arglist)
+  if options.list_inputs:
+    return '\n'.join(files_to_copy)
+
+  if not options.output_dir:
+    raise WrongNumberOfArgumentsException('-o required.')
+
+  if options.list_outputs:
+    outputs = [os.path.join(options.output_dir, x) for x in files_to_copy]
+    return '\n'.join(outputs)
+
+  CopyFiles(files_to_copy, options.output_dir)
+  return 0
+
+def main(argv):
+  try:
+    result = DoMain(argv[1:])
+  except WrongNumberOfArguments, e:
+    print >>sys.stderr, e
+    return 1
+  print result
+  return 0
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv))