.travis.yml

sudo: required
dist: trusty
language: python

matrix:
    include:
        # different pythons
        - python: 3.5

        # different keras versions
        - python: 3.6
          env: KERAS_VERSION=head
        - python: 3.6
          env: KERAS_VERSION=2.2.0
        - python: 3.6
          env: KERAS_VERSION=2.2.4

git:
  submodules: true


install:
  # code below is taken from http://conda.pydata.org/docs/travis.html
  # 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"
  - hash -r
  - conda config --set always_yes yes --set changeps1 no
  - conda update -q conda
  # Useful for debugging any issues with conda
  - conda info -a

  - conda create -q -n test-environment python=$TRAVIS_PYTHON_VERSION pytest pandas
  - source activate test-environment
  - pip install --only-binary=numpy,scipy numpy nose scipy matplotlib h5py theano scikit-image

  # install keras
  - if [[ $KERAS_VERSION == "head" ]]; then
      pip install --no-deps git+https://github.com/keras-team/keras.git;
    elif [ -z $KERAS_VERSION ]; then
      pip install keras;
    else
      pip install keras==$KERAS_VERSION;
    fi

  - conda install mkl mkl-service

  # set library path
  - export LD_LIBRARY_PATH=$HOME/miniconda/envs/test-environment/lib/:$LD_LIBRARY_PATH

  # install lib in develop mode
  - pip install -e .[tests]

  # install TensorFlow (CPU version).
  - pip install tensorflow==1.9

  # install pydot for visualization tests
  - conda install pydot graphviz

  # detect one of markdown files is changed or not
  - export DOC_ONLY_CHANGED=False;
  - if [ $(git diff --name-only HEAD~1 | wc -l) == "1" ] && [[ "$(git diff --name-only HEAD~1)" == *"md" ]]; then
      export DOC_ONLY_CHANGED=True;
    fi

# command to run tests
script:
  - export MKL_THREADING_LAYER="GNU"
  - export KERAS_BACKEND="tensorflow"
  # run keras backend init to initialize backend config
  - python -c "import keras.backend"
  # create models directory to avoid concurrent directory creation at runtime
  - mkdir ~/.keras/models
  # set up keras backend
  - sed -i -e 's/"backend":[[:space:]]*"[^"]*/"backend":\ "'$KERAS_BACKEND'/g' ~/.keras/keras.json;
  - echo -e "Running tests with the following config:\n$(cat ~/.keras/keras.json)"
  - if [[ "$DOC_ONLY_CHANGED" == "False" ]]; then
      if [[ "$TEST_MODE" == "PEP8" ]]; then
        PYTHONPATH=$PWD:$PYTHONPATH py.test --pep8 -m pep8 -n0;
      else
        PYTHONPATH=$PWD:$PYTHONPATH py.test tests/;
      fi;
    fi