.travis.yml

language: python
dist: bionic
cache:
  pip: true
  directories:
    - $HOME/.ccache  # https://github.com/travis-ci/travis-ci/issues/5853

addons:
  apt:
    packages:
      - libhdf5-serial-dev
      - libnetcdf-dev
      - libproj-dev
      - proj-data
      - proj-bin
      - libgeos-dev
      - libopenmpi-dev

env:
  global:
    PIP=pip
    HOMEBREW_NO_AUTO_UPDATE=1

before_install:
  - |
    if [[ $TRAVIS_OS_NAME != 'osx' ]]; then
      $PIP install --upgrade virtualenv
      python -m virtualenv venv
      source venv/bin/activate
      export PATH=/usr/lib/ccache:$PATH
    else
      sudo mkdir -p /usr/local/man
      sudo chown -R "${USER}:admin" /usr/local/man
      HOMEBREW_NO_AUTO_UPDATE=1 brew install hdf5 proj geos open-mpi netcdf ccache
      HOMEBREW_NO_AUTO_UPDATE=1 brew uninstall gdal postgis numpy  # WHY?
      export PATH=/usr/local/opt/ccache/libexec:$PATH
    fi
    mkdir -p $HOME/.config/yt
    echo "[yt]" > $HOME/.config/yt/ytrc
    echo "suppressStreamLogging = True" >> $HOME/.config/yt/ytrc
    cat $HOME/.config/yt/ytrc
    cp tests/matplotlibrc .

install:
  - |
    # setup environment
    ccache -s
    # Upgrade pip and setuptools and wheel to get clean install
    $PIP install --upgrade pip
    $PIP install --upgrade wheel
    $PIP install --upgrade setuptools
    echo "Travis build stage: $TRAVIS_BUILD_STAGE_NAME"
    # install dependencies yt
    if [[ ${TRAVIS_BUILD_STAGE_NAME} == "lint" ]]; then
      export TRAVIS_BUILD_STAGE_NAME="Lint"
    fi
    if [[ ${TRAVIS_BUILD_STAGE_NAME} != "Lint" ]]; then
      if [[ $MINIMAL == 1 ]]; then
        # Ensure numpy and cython are installed so dependencies that need to be built
        # don't error out
        # The first numpy to support py3.6 is 1.12, but numpy 1.13 matches 
        # unyt so we'll match it here. 
        $PIP install numpy==1.13.3 cython==0.26.1
        $PIP install -r tests/test_minimal_requirements.txt
      else
        # Getting cartopy installed requires getting cython and numpy installed
        # first; this is potentially going to be fixed with the inclusion of
        # pyproject.toml in cartopy.
        # These versions are pinned, so we will need to update/remove them when
        # the hack is no longer necessary.
        $PIP install numpy==1.18.1 cython==0.29.14
        CFLAGS="$CFLAGS -DACCEPT_USE_OF_DEPRECATED_PROJ_API_H" $PIP install -r tests/test_requirements.txt
      fi
      $PIP install -e .
    else
      $PIP install -r tests/lint_requirements.txt
    fi

jobs:
  include:
    - stage: Lint
      name: "flake8"
      python: 3.6
      script: |
        flake8 --version
        flake8 yt/

    - stage: Lint
      name: "isort"
      python: 3.6
      script: |
        isort --version
        isort . --check --diff

    - stage: Lint
      name: "black"
      python: 3.6
      script: |
        black --version
        black --check yt/

    - stage: tests
      name: "Python: 3.6 Minimal Dependency Unit Tests"
      python: 3.6
      env: MINIMAL=1
      script: coverage run $(which nosetests) -c nose_unit.cfg

    - stage: tests
      name: "Python: 3.6 Unit Tests"
      python: 3.6
      script: coverage run $(which nosetests) -c nose_unit.cfg

    - stage: tests
      name: "Python: 3.8 Unit Tests"
      python: 3.8
      script: coverage run $(which nosetests) -c nose_unit.cfg

      # This is not necessarily going to be forever -- once we merge yt-4.0
      # with master we will likely change this around to reduce the number of
      # versions we test on.
    - stage: tests
      name: "Python: 3.7 Answer Tests"
      python: 3.7
      script: coverage run $(which nosetests) -c nose_answer.cfg
      after_failure: python tests/report_failed_answers.py -f -m --xunit-file "answer_nosetests.xml"

    - stage: tests
      name: "MacOS: Unit Tests"
      os: osx
      osx_image: xcode10.1
      language: shell
      env: PIP=pip3
      cache:
        - directories:
          - $HOME/Library/Caches/pip
      script: nosetests -c nose_unit.cfg

after_success:
  - |
    if [[ ${TRAVIS_BUILD_STAGE_NAME} == "lint" ]]; then
      export TRAVIS_BUILD_STAGE_NAME="Lint"
    fi
    if [[ ${TRAVIS_BUILD_STAGE_NAME} != "Lint" ]]; then
      codecov
    fi