(abandoned) Validator tests: convert hexes to TFs and run on bots (for prod. validator only)

src/trusted/validator/x86/testing/tf/utils.py

+# Copyright (c) 2012 The Native Client 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 os
+import subprocess
+import tempfile
+
+
+def DataToReadableHex(data):
+  """Convert string of bytes to string of hexes ('\xde\xad' -> 'de ad').
+
+  Args:
+    data: String (used to represent sequence of bytes).
+
+  Returns:
+    String of space-separated hex codes.
+  """
+
+  return ' '.join('%02x' % ord(c) for c in data)
+
+
+def ReadableHexToData(s):
+  """Convert string of hexes to string of bytes ('be ef' -> '\xbe\xef').
+
+  Args:
+    s: String of space-separated two-character hex codes.
+
+  Returns:
+    String representing sequence of bytes.
+  """
+
+  bytes = s.split()
+  assert all(len(byte) == 2 for byte in bytes)
+  return ''.join(chr(int(byte, 16)) for byte in bytes)
+
+
+def CheckOutput(args, **kwargs):
+  # reimplementation of subprocess.check_output from py 2.7
+  assert 'stdout' not in kwargs
+
+  process = subprocess.Popen(args, stdout=subprocess.PIPE, **kwargs)
+  output, _ = process.communicate()
+
+  if process.returncode != 0:
+    raise subprocess.CalledProcessError(process.returncode, cmd=args[0])
+
+  return output
+
+
+# Custom context manager that allows temporary file to be reopened
+# and deletes it on exit.
+# NamedTemporareFile with delete=True won't do the job because
+# it can't be reopened on Windows.
+class TempFile(object):
+  def __init__(self, mode='w+b'):
+    self.file = tempfile.NamedTemporaryFile(mode=mode, delete=False)
+
+  def __enter__(self):
+    return self.file
+
+  def __exit__(self, exc_type, ext_value, traceback):

[Mark Seaborn, 2012/09/10 19:38:06]

Nit: 'ext_value' -> 'exc_value'

[Vlad Shcherbina, 2012/09/11 14:26:00]

Done.

+    self.file.close()
+    if os.path.exists(self.file.name):

[Mark Seaborn, 2012/09/10 19:38:06]

Nit: can you put a comment in to say which platforms the exists() check is
necessary on?

[Vlad Shcherbina, 2012/09/11 14:26:00]

Done. It's not the platform, but the fact that GNU AS removes output file if
there are compilation errors.

+      os.remove(self.file.name)