.travis.yml

language: c

compiler: gcc

# Setting sudo to false opts in to Travis-CI container-based builds.
sudo: false

os:
    - linux

# The apt packages below are needed for sphinx builds, which can no longer
# be installed with sudo apt-get.
addons:
    apt:
        packages:
            - graphviz
            - texlive-latex-extra
            - dvipng

# https://github.com/matplotlib/matplotlib/issues/5836#issuecomment-212052820
cache:
    directories:
        - $HOME/.cache/matplotlib


env:
    global:
        # The following versions are the 'default' for tests, unless
        # overidden underneath. They are defined here in order to save having
        # to repeat them for all configurations.
        - NUMPY_VERSION=stable
        - ASTROPY_VERSION=stable
        - CONDA_DEPENDENCIES='matplotlib scipy spectral-cube lmfit'
        - PIP_DEPENDENCIES='lineid-plot'
        - SETUP_XVFB=True
        - MPLBACKEND=TkAgg
        - PYTHON_VERSION=3.6
        - SETUP_CMD='test'

    matrix:
        # Make sure that egg_info works without dependencies
        - SETUP_CMD='egg_info'
        # Try all python versions with the latest numpy
        - SETUP_CMD='test'

matrix:
    include:

        # Check for sphinx doc build warnings - we do this first because it
        # may run for a long time
        # -wn is removed because I'm ignoring warnings
        - env: SETUP_CMD='build_sphinx'
               PYTHON_VERSION=3.6

        - env: PYTHON_VERSION=2.7

        - env: PYTHON_VERSION=3.6

        - env: PYTHON_VERSION=3.7

        # Try Astropy development version (which is no longer compatible with py2.7)
        - env: ASTROPY_VERSION=development SETUP_CMD='test'
               PIP_DEPENDENCIES='pytest-astropy'
               PYTHON_VERSION=3.6

        # try with recent versions of mpl
        - env: ASTROPY_VERSION=development
               SETUP_CMD='test'
               NUMPY_VERSION=1.14
               CONDA_DEPENDENCIES='matplotlib=2 scipy spectral-cube'
               PIP_DEPENDENCIES='pytest-astropy'
               PYTHON_VERSION=3.7

        - env: ASTROPY_VERSION=development
               SETUP_CMD='test'
               NUMPY_VERSION=1.14
               CONDA_DEPENDENCIES='matplotlib=2 scipy spectral-cube'
               PIP_DEPENDENCIES='pytest-astropy'
               PYTHON_VERSION=3.6

        - env: ASTROPY_VERSION=development
               SETUP_CMD='test'
               CONDA_DEPENDENCIES='matplotlib=3 scipy spectral-cube'
               PIP_DEPENDENCIES='matplotlib==3 pytest-astropy'
               PYTHON_VERSION=3.6

        # Try with optional dependencies disabled
        - env: SETUP_CMD='test'
               CONDA_DEPENDENCIES='matplotlib=1.5 scipy spectral-cube'
               PIP_DEPENDENCIES=''
               PYTHON_VERSION=2.7
        - env: SETUP_CMD='test'
               CONDA_DEPENDENCIES='matplotlib=1.5 scipy spectral-cube'
               PIP_DEPENDENCIES=''
               PYTHON_VERSION=3.6

install:
    - git clone git://github.com/astropy/ci-helpers.git
    - source ci-helpers/travis/setup_conda_$TRAVIS_OS_NAME.sh

script:
   #- python -c "import os; print('This is the line before setup_cmd: {0}'.format(os.getenv('SETUP_CMD')))"
   - if [[ $CONDA_DEPENDENCIES = *"matplotlib"* && $SETUP_CMD == 'test' ]]; then python -c 'import matplotlib.pyplot'; fi # as recommended here https://github.com/matplotlib/matplotlib/issues/5836#issuecomment-212052820
   - echo "This is the line before setup_cmd $SETUP_CMD"
   - python setup.py $SETUP_CMD
   # some extras for future use
   # right now, run_tests is required
   # but py.test works, kinda
   - if [ $SETUP_CMD == 'test' ]; then py.test -x pyspeckit/spectrum/tests/test_units.py; fi