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["Martin \[gz\]" <gzlist@xxxxxxxxxxxxxx>]

Public bug reported:

The assertThat method for use with matchers creates AssertionError
instances that don't stringify on Python 2.4, 2.5, and some 2.6 minor
versions when used with a non-ascii unicode argument. The
testtools.testresults code has some robustness that means the failure is
still printed, but other runners may break if the UnicodeEncodeError
from trying to stringify the exception propagates.

Instead of the expected output, these older Pythons get:

Traceback (most recent call last):
  ...
    self.assertThat(u"\xa7", Equals(u"a"))
  File "C:\Python24\Lib\site-packages\testtools\testcase.py", line 351, in assertThat
    self.fail('Match failed. Matchee: "%s"\nMatcher: %s\nDifference: %s\n'
AssertionError: <unprintable AssertionError object>

** Affects: testtools
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/804127

Title:
  assertThat should be careful when handling unicode

Status in testtools:
  New

Bug description:
  The assertThat method for use with matchers creates AssertionError
  instances that don't stringify on Python 2.4, 2.5, and some 2.6 minor
  versions when used with a non-ascii unicode argument. The
  testtools.testresults code has some robustness that means the failure
  is still printed, but other runners may break if the
  UnicodeEncodeError from trying to stringify the exception propagates.

  Instead of the expected output, these older Pythons get:

  Traceback (most recent call last):
    ...
      self.assertThat(u"\xa7", Equals(u"a"))
    File "C:\Python24\Lib\site-packages\testtools\testcase.py", line 351, in assertThat
      self.fail('Match failed. Matchee: "%s"\nMatcher: %s\nDifference: %s\n'
  AssertionError: <unprintable AssertionError object>

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