.travis.yml

language: minimal
dist: xenial

env:
  matrix:
    - PYTHON_VERSION=3.7

install:
  # capture installation dir
  - export INSTALL_DIR=${pwd}

  # iris test-data reference is just a commit
  - export IRIS_TEST_DATA_REF="672dbb46c986038fa5d06a3d8aad691fd1951e07"

  # iris reference is to the latest "ugrid" branch
  - export IRIS_BRANCH="ugrid"

  # download and install iris test data
  - >
    if [[ "${TEST_MINIMAL}" != true ]]; then
      wget --quiet -O iris-test-data.zip https://github.com/SciTools/iris-test-data/archive/${IRIS_TEST_DATA_REF}.zip;
      unzip -q iris-test-data.zip;
      mv "iris-test-data-${IRIS_TEST_DATA_REF}" iris-test-data;
    fi

  # download iris branch
  - >
    wget --quiet -O iris.zip wget https://github.com/SciTools/iris/archive/${IRIS_BRANCH}.zip;
    unzip -q iris.zip;
    mv "iris-${IRIS_BRANCH}" iris;

  # install miniconda
  - >
    echo 'Installing miniconda';
    export CONDA_BASE="https://repo.continuum.io/miniconda/Miniconda";
    wget --quiet ${CONDA_BASE}3-latest-Linux-x86_64.sh -O miniconda.sh;
    bash miniconda.sh -b -p ${HOME}/miniconda;
    export PATH="${HOME}/miniconda/bin:${PATH}";

  # Create the testing conda environment
  # ------------------------------------
  # Explicitly add defaults channel, see https://github.com/conda/conda/issues/2675
  - >
    echo 'Configure conda and create an environment';
    conda config --set always_yes yes --set changeps1 no;
    conda config --set show_channel_urls True;
    conda config --add channels conda-forge;
    conda update --quiet conda;
    export ENV_NAME='test-environment';
    conda create --quiet -n ${ENV_NAME} python=${PYTHON_VERSION} pip;
    source activate ${ENV_NAME};

  # Install iris dependencies via conda, using iris/gen_conda_requirements.py
  # -------------------------------------------------------------------------
  - >
    echo 'Install Iris + its test dependencies';
    CONDA_REQS_GROUPS="test";
    CONDA_REQS_FILE="conda-requirements.txt";
    python iris/requirements/gen_conda_requirements.py --groups ${CONDA_REQS_GROUPS} > ${CONDA_REQS_FILE};
    conda install --quiet -n ${ENV_NAME} --file ${CONDA_REQS_FILE};

  # Conda-install our own additional dependencies.
  - conda install --file requirements/conda_requirements.txt

  # Output environment debug info
  - >
    conda list -n ${ENV_NAME};
    conda info -a;

  # set iris config paths
  - >
    export PREFIX="${HOME}/miniconda/envs/${ENV_NAME}";
    SITE_CFG="iris/lib/iris/etc/site.cfg";
    echo "[Resources]" > ${SITE_CFG};
    echo "test_data_dir = $(pwd)/iris-test-data/test_data" >> ${SITE_CFG};
    echo "doc_dir = $(pwd)/docs/iris" >> ${SITE_CFG};
    echo "[System]" >> ${SITE_CFG};
    echo "udunits2_path = ${PREFIX}/lib/libudunits2.so" >> ${SITE_CFG};

  # install iris
  - >
    cd iris;
    python setup.py --quiet install;

  # Finally, install iris-ugrid itself.
  # FOR NOW : just put it on the module searchpath (no actual install code)
  - cd ..;
  - export PYTHONPATH=$(readlink -f .):$PYTHONPATH;


script:

  - >
    echo $(black --version);
    black --check ${INSTALL_DIR};

  - pytest -v ./iris_ugrid/tests