Pytest DepreciationWarnings

[atudor]

Environment

Sitescripts from this commit: ​https://hg.adblockplus.org/sitescripts/rev/ee924091256b

Result of pip freeze on the testing venv:

asn1crypto==0.24.0
atomicwrites==1.2.1
attrs==18.2.0
cffi==1.11.5
configparser==3.5.0
coverage==4.5.1
cryptography==2.3.1
enum34==1.1.6
flake8==3.6.0
flake8-commas==2.0.0
flake8-docstrings==1.3.0
flake8-eyeo==0.1
flake8-per-file-ignores==0.6
flake8-polyfill==1.0.2
funcsigs==1.0.2
httplib2==0.11.3
idna==2.7
ipaddress==1.0.22
Jinja2==2.10
MarkupSafe==1.1.0
mccabe==0.6.1
mock==2.0.0
more-itertools==4.3.0
oauth2client==4.1.3
pathlib2==2.3.2
pathmatch==0.2.1
pbr==5.1.1
pep8-naming==0.7.0
pluggy==0.8.0
py==1.7.0
pyasn1==0.4.4
pyasn1-modules==0.2.2
pycodestyle==2.4.0
pycparser==2.19
pycrypto==2.6.1
pydocstyle==3.0.0
pyflakes==2.0.0
pysed==0.7.8
pytest==3.10.0
pytest-cov==2.6.0
pytest-mock==1.10.0
rsa==4.0
scandir==1.9.0
six==1.11.0
snowballstemmer==1.2.1
typing==3.6.6
wsgi-intercept==1.8.0

How to reproduce

1. Clone the module from the version above.
2. Run tox.

Observed behaviour

A bunch of warnings caused by pytest occur:

sitescripts/formmail/test/test_formmail.py::test_get_error
  /Users/tavram/Documents/code/sitescripts/sitescripts/formmail/web/formmail.py:25: DeprecationWarning: setupStderr() is deprecated. If you write text to stderr that might be non-ASCII use the "logging" module instead.
    setupStderr(environ['wsgi.errors'])

sitescripts/formmail/test/test_formmail.py::test_no_name
  /Users/tavram/Documents/code/sitescripts/sitescripts/formmail/web/formmail.py:25: DeprecationWarning: setupStderr() is deprecated. If you write text to stderr that might be non-ASCII use the "logging" module instead.
    setupStderr(environ['wsgi.errors'])

sitescripts/formmail/test/test_formmail.py::test_no_email
  /Users/tavram/Documents/code/sitescripts/sitescripts/formmail/web/formmail.py:25: DeprecationWarning: setupStderr() is deprecated. If you write text to stderr that might be non-ASCII use the "logging" module instead.
    setupStderr(environ['wsgi.errors'])

sitescripts/formmail/test/test_formmail.py::test_no_subject
  /Users/tavram/Documents/code/sitescripts/sitescripts/formmail/web/formmail.py:25: DeprecationWarning: setupStderr() is deprecated. If you write text to stderr that might be non-ASCII use the "logging" module instead.
    setupStderr(environ['wsgi.errors'])

sitescripts/formmail/test/test_formmail.py::test_no_message
  /Users/tavram/Documents/code/sitescripts/sitescripts/formmail/web/formmail.py:25: DeprecationWarning: setupStderr() is deprecated. If you write text to stderr that might be non-ASCII use the "logging" module instead.
    setupStderr(environ['wsgi.errors'])

sitescripts/formmail/test/test_formmail.py::test_bad_email
  /Users/tavram/Documents/code/sitescripts/sitescripts/formmail/web/formmail.py:25: DeprecationWarning: setupStderr() is deprecated. If you write text to stderr that might be non-ASCII use the "logging" module instead.
    setupStderr(environ['wsgi.errors'])

sitescripts/formmail/test/test_formmail.py::test_success
  /Users/tavram/Documents/code/sitescripts/sitescripts/formmail/web/formmail.py:25: DeprecationWarning: setupStderr() is deprecated. If you write text to stderr that might be non-ASCII use the "logging" module instead.
    setupStderr(environ['wsgi.errors'])

sitescripts/formmail/test/test_formmail2.py::test_config_errors[url-No URL configured for form handler: test]
  /Users/tavram/Documents/code/sitescripts/sitescripts/formmail/test/test_formmail2.py:104: DeprecationWarning: BaseException.message has been deprecated as of Python 2.6
    assert error.value.message == message

sitescripts/formmail/test/test_formmail2.py::test_config_errors[fields-No fields configured for form handler: test]
  /Users/tavram/Documents/code/sitescripts/sitescripts/formmail/test/test_formmail2.py:104: DeprecationWarning: BaseException.message has been deprecated as of Python 2.6
    assert error.value.message == message

sitescripts/formmail/test/test_formmail2.py::test_config_errors[template-No template configured for form handler: test]
  /Users/tavram/Documents/code/sitescripts/sitescripts/formmail/test/test_formmail2.py:104: DeprecationWarning: BaseException.message has been deprecated as of Python 2.6
    assert error.value.message == message

sitescripts/formmail/test/test_formmail2.py::test_config_field_errors
  /Users/tavram/Documents/code/sitescripts/sitescripts/formmail/test/test_formmail2.py:155: DeprecationWarning: BaseException.message has been deprecated as of Python 2.6
    assert error.value.message == 'No fields configured for form handler: test'

sitescripts/formmail/test/test_formmail2.py::test_config_template_errors
  /Users/tavram/Documents/code/sitescripts/sitescripts/formmail/test/test_formmail2.py:162: DeprecationWarning: BaseException.message has been deprecated as of Python 2.6
    assert error.value.message == 'Template not found at: no'

-- Docs: https://docs.pytest.org/en/latest/warnings.html

Expected behaviour

No warnings to be displayed.

[rhowell]

I didn't realize there was already a ticket for this, and it was pretty trivial to implement after removing the previous version of formmail.py for #4413. The codereview references a Noissue, but I'll change the commit message to include this issue number.