.travis.yml

sudo: false
language: python
cache: pip

branches:
  only:
  - master

os: linux

python:
- "2.7"
- "3.6"

env:
- PIPENV_SHELL_COMPAT=true PIPENV_COLORBLIND=true PIPENV_NOSPIN=true

matrix:
  include:
  - os: osx
    language: generic
    env: PYTHON=2.7.14
  - os: osx
    language: generic
    env: PYTHON=3.6.4

before_install: |
  if [ "$TRAVIS_OS_NAME" == "osx" ]; then
    brew update
    # Per the `pyenv homebrew recommendations <https://github.com/yyuu/pyenv/wiki#suggested-build-environment>`_.
    brew install openssl readline
    # See https://docs.travis-ci.com/user/osx-ci-environment/#A-note-on-upgrading-packages.
    # I didn't do this above because it works and I'm lazy.
    brew outdated pyenv || brew upgrade pyenv
    # virtualenv doesn't work without pyenv knowledge. venv in Python 3.3
    # doesn't provide Pip by default. So, use `pyenv-virtualenv <https://github.com/yyuu/pyenv-virtualenv/blob/master/README.md>`_.
    brew install pyenv-virtualenv
    pyenv install $PYTHON
    # I would expect something like ``pyenv init; pyenv local $PYTHON`` or
    # ``pyenv shell $PYTHON`` would work, but ``pyenv init`` doesn't seem to
    # modify the Bash environment. ??? So, I hand-set the variables instead.
    export PYENV_VERSION=$PYTHON
    export PATH="/Users/travis/.pyenv/shims:${PATH}"
    pyenv-virtualenv venv
    source venv/bin/activate
    # A manual check that the correct version of Python is running.
    python --version
  fi

install:
- python -m pip install -U pip
- python -m easy_install -U setuptools
- pip install --upgrade setuptools pip wheel pipenv
- pipenv install --dev --system

script:
- python -m pytest --cov=./

after_success:
- codecov

notifications:
  email:
    on_success: never
    on_failure: change