language: python
sudo: false

matrix:
  include:
    - python: 2.7
      env: PANDAS_VERSION=0.24.2 NUMPY_VERSION=1.12.1 SCIPY_VERSION=1.2.1 LIBGFORTRAN_VERSION=3.0
    - python: 2.7
      env: PANDAS_VERSION=0.20.1 NUMPY_VERSION=1.12.1 SCIPY_VERSION=0.19.0 LIBGFORTRAN_VERSION=3.0
    - python: 3.6
      env: PANDAS_VERSION=1.0.4 NUMPY_VERSION=1.18.4 SCIPY_VERSION=1.4.1 LIBGFORTRAN_VERSION=3.0
    - python: 3.6
      env: PANDAS_VERSION=0.20.1 NUMPY_VERSION=1.12.1 SCIPY_VERSION=0.19.0 LIBGFORTRAN_VERSION=3.0
    - python: 3.6
      env: PANDAS_VERSION=1.0.4 NUMPY_VERSION=1.18.4 SCIPY_VERSION=1.4.1 LIBGFORTRAN_VERSION=3.0
    - python: 3.7
      env: PANDAS_VERSION=1.0.4  NUMPY_VERSION=1.18.4 SCIPY_VERSION=1.4.1 LIBGFORTRAN_VERSION=3.0

before_install:
  # We do this conditionally because it saves us some downloading if the
  # version is the same.
  - if [[ "$TRAVIS_PYTHON_VERSION" == "2.7" ]]; then
      wget https://repo.continuum.io/miniconda/Miniconda-latest-Linux-x86_64.sh -O miniconda.sh;
    else
      wget https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh;
    fi
  - bash miniconda.sh -b -p $HOME/miniconda
  - export PATH="$HOME/miniconda/bin:$PATH"
  - conda config --set always_yes yes --set changeps1 no
  - conda update -q conda

install:
  - conda create -n testenv --yes -c conda-forge pip python=$TRAVIS_PYTHON_VERSION numpy=$NUMPY_VERSION pandas=$PANDAS_VERSION scipy=$SCIPY_VERSION libgfortran=$LIBGFORTRAN_VERSION
  - source activate testenv
  - pip install -e .[dev]

before_script:
  - "flake8 ."

script:
  - nosetests
  - source deactivate

notifications:
  email: false

branches:
  only:
    - master