.travis.yml

language: python

os:
  - linux
# sadly travis does not support python on osx
#  - osx

python:
  - "2.7"
  - "3.6"
  - "3.8"

compiler:
  - gcc

env:
  - MULTINEST_TAG=v3.10b WITHMPI=mpich
  - MULTINEST_TAG=v3.10b WITHMPI=openmpi
  - MULTINEST_TAG=v3.10b WITHMPI=no
  - MULTINEST_TAG=v3.10 WITHMPI=no

#before_install:
#  - if [ "$TRAVIS_OS_NAME" = "osx" ]; then 
#       brew install gcc49 lapack blas
#    fi

install:
  # Fetch and install conda
  # -----------------------
#  - if [ "$TRAVIS_OS_NAME" = "osx" ] && [ "$CC" = "gcc" ]; then export CC=gcc-4.8; fi
  - sudo apt-get install -qq libblas{3,-dev} liblapack{3,-dev} libatlas{3-base,-dev} cmake build-essential git gfortran 
  - if [[ "$WITHMPI" == "openmpi" ]]; then 
      sudo apt-get install -qq openmpi-bin libopenmpi-dev python-mpi4py;
      update-alternatives --list mpi|grep "$WITHMPI" | xargs -rt sudo update-alternatives --set mpi;
      update-alternatives --list mpirun|grep "$WITHMPI" | xargs -rt sudo update-alternatives --set mpirun;
    fi
  - if [[ "$WITHMPI" == "mpich" ]]; then 
      sudo apt-get install -qq mpich libmpich-dev python-mpi4py;
      update-alternatives --list mpi|grep "$WITHMPI" | xargs -rt sudo update-alternatives --set mpi;
      update-alternatives --list mpirun|grep "$WITHMPI" | xargs -rt sudo update-alternatives --set mpirun;
    fi
  - export CONDA_BASE="http://repo.continuum.io/miniconda/Miniconda"
  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then 
      if [[ "${TRAVIS_PYTHON_VERSION}" == 2* ]]; then
        wget ${CONDA_BASE}2-latest-MacOSX-x86_64.sh -O miniconda.sh;
      else
        wget ${CONDA_BASE}3-latest-MacOSX-x86_64.sh -O miniconda.sh;
      fi
    else
      if [[ "${TRAVIS_PYTHON_VERSION}" == 2* ]]; then
        wget ${CONDA_BASE}2-latest-Linux-x86_64.sh -O miniconda.sh;
      else
        wget ${CONDA_BASE}3-latest-Linux-x86_64.sh -O miniconda.sh;
      fi
    fi
  - bash miniconda.sh -b -p ${HOME}/miniconda
  - export PATH="${HOME}/miniconda/bin:${PATH}"
  - hash -r

  # Create the testing environment
  # ------------------------------
  - conda config --set always_yes yes
  - conda config --set changeps1 no
  - conda config --set show_channel_urls true
  - conda config --add channels conda-forge
  - conda update --quiet conda
  - ENV_NAME="test-environment"
  - conda create --quiet -n ${ENV_NAME} python=${TRAVIS_PYTHON_VERSION} pytest
  - source activate ${ENV_NAME}

  # Customise the testing environment
  # ---------------------------------
  - conda install --quiet --file conda-requirements.txt
  - pip install --user coveralls

  # Summerise environment
  # ---------------------
  - conda list
  - conda info -a
  - if [[ "$WITHMPI" != "no" ]]; then 
      pip install --user mpi4py;
    fi
  
  # Install and test
  - git clone --branch ${MULTINEST_TAG} https://github.com/JohannesBuchner/MultiNest
  - mkdir -p MultiNest/build; pushd MultiNest/build; cmake .. && make && popd
  - test -e MultiNest/lib/libmultinest.so
  - python setup.py install --user
  - python -c 'import pymultinest'|grep 'LD_LIBRARY_PATH'

  - git clone https://github.com/JohannesBuchner/cuba
  - pushd cuba && ./configure && ./makesharedlib.sh && popd
  - export LD_LIBRARY_PATH=MultiNest/lib/:cuba/:${LD_LIBRARY_PATH} 
  - 'echo "backend: Agg" > matplotlibrc'

script:
  - python -c 'import pymultinest'
  - python -c 'import pycuba'
  - if [[ "$WITHMPI" == "no" ]]; then coverage run setup.py test; fi
  - rm -rf chains/
  - if [[ "$WITHMPI" == "no" ]]; then 
      python pymultinest_demo_minimal.py;
    else
      python -c 'import mpi4py' &&
      mpiexec -np 4 python pymultinest_demo_minimal.py;
    fi
  - if [[ "$WITHMPI" == "no" ]]; then 
      python pymultinest_demo.py;
    else
      python -c 'import mpi4py' &&
      mpiexec -np 4 python pymultinest_demo.py;
    fi
  - if [[ "$WITHMPI" == "no" ]]; then
      if [[ "$MULTINEST_TAG" == "v3.10b" ]]; then
        python tests/pymultinest_long_name_test.py;
      else
        if python tests/pymultinest_long_name_test.py; then
          echo "Unexpected success";
          exit 1;
        else
          echo "Long name failed with error code $? as expected";
        fi;
      fi;
    fi
  - python multinest_marginals.py chains/3-
  - python pycuba_demo.py

after_success: coveralls