language: python

# Python 3.5 specified to make tox environment 'py35' work.
# See: https://github.com/travis-ci/travis-ci/issues/4794
python:
  - 3.5

# Environment changes have to be manually synced with 'tox.ini'.
# See: https://github.com/travis-ci/travis-ci/issues/3024
env:
  - TOXENV=py26
  - TOXENV=py27
  - TOXENV=py33
  - TOXENV=py34
  - TOXENV=py35
  - TOXENV=pypy

install:
  - pip install -r requirements.txt
  - pip install coveralls

script:
  - tox

after_success:
  # Coveralls submission only for py35 environment, because of being the only
  # one that executes doctest-modules testing, according to tox.ini.
  - if [ ${TOXENV} = "py35" ]; then coveralls; fi