Add code to 'fix' python encoding and it's unit test.

tests/fix_encoding_test.py

+#!/usr/bin/python
+# coding=utf8
+# Copyright (c) 2011 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.
+
+"""Unit tests for fix_encoding.py."""
+
+import os
+import sys
+import unittest
+
+ROOT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+sys.path.insert(0, ROOT_DIR)
+
+import fix_encoding
+
+
+class FixEncodingTest(unittest.TestCase):
+  # Nice mix of latin, hebrew, arabic and chinese. Doesn't mean anything.
+  text = u'Héllô 偉大 سيد'
+
+  def test_code_page(self):
+    # Make sure printing garbage won't throw.
+    print self.text.encode() + '\xff'
+    print >> sys.stderr, self.text.encode() + '\xff'
+
+  def test_utf8(self):
+    # Make sure printing utf-8 works.
+    print self.text.encode('utf-8')
+    print >> sys.stderr, self.text.encode('utf-8')
+
+  def test_unicode(self):
+    # Make sure printing unicode works.
+    print self.text
+    print >> sys.stderr, self.text
+
+  def test_default_encoding(self):
+    self.assertEquals('utf-8', sys.getdefaultencoding())
+
+  def test_win_console(self):
+    if sys.platform != 'win32':
+      return
+    # This should fail if redirected. Can be checked with:
+    # python fix_encoding_test.py > a
+    self.assertEquals(
+        sys.stdout.__class__, fix_encoding.WinUnicodeConsoleOutput)
+    self.assertEquals(
+        sys.stderr.__class__, fix_encoding.WinUnicodeConsoleOutput)
+    self.assertEquals(sys.stdout.encoding, sys.getdefaultencoding())
+    self.assertEquals(sys.stderr.encoding, sys.getdefaultencoding())
+
+  def test_multiple_calls(self):
+    # Shouldn't do anything.
+    self.assertEquals(False, fix_encoding.fix_encoding())
+
+
+if __name__ == '__main__':
+  assert fix_encoding.fix_encoding()
+  unittest.main()