Add workaround for pytest 3.3.0 bug

pytest is setting an env var PYTEST_CURRENT_TEST to the test name + test
parameters. If parameters happen to contain NULL bytes, the putenv()
call fails with "ValueError: embedded null byte". The workaround uses
repr() of test parameters as parameter id.

See pytest-dev/pytest#2957
Signed-off-by: Christian Heimes <[email protected]>
Reviewed-By: Alexander Bokovoy <[email protected]>

ipatests/test_ipapython/test_ssh.py

@@ -74,8 +74,11 @@
  (u'vanitas %s' % b64, ValueError),
  (u'@opt %s' % openssh, ValueError),
  (u'opt=val %s' % openssh, ValueError),
- (u'opt, %s' % openssh, ValueError),
-])
+ (u'opt, %s' % openssh, ValueError)],
+ # ids=repr is workaround for pytest issue with NULL bytes,
+ # see https://github.com/pytest-dev/pytest/issues/2644
+ ids=repr
+)
 def test_public_key_parsing(pk, out):
  if isinstance(out, type) and issubclass(out, Exception):
  pytest.raises(out, ssh.SSHPublicKey, pk)