.travis.yml

group: travis_latest
language: python
cache: pip
matrix:
  allow_failures:
    - language: cpp
    - language: java
    - language: node_js
  include:

    # https://docs.travis-ci.com/user/languages/python
    - python: 3.7
      dist: xenial    # required for Python 3.7 (travis-ci/travis-ci#9069)
      sudo: required  # required for Python 3.7 (travis-ci/travis-ci#9069)
      install: pip install flake8 pytest
      before_script:
        # stop the build if there are Python syntax errors or undefined names
        - flake8 . --count --select=E901,E999,F821,F822,F823 --show-source --statistics
        # exit-zero treats all errors as warnings.  The GitHub editor is 127 chars wide
        - flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
      script: pytest
    
    # https://docs.travis-ci.com/user/languages/c
    # https://docs.travis-ci.com/user/languages/cpp
    - language: cpp
      compiler: clang

    # https://docs.travis-ci.com/user/languages/java
    - language: java
      jdk: oraclejdk11

    # https://docs.travis-ci.com/user/languages/javascript-with-nodejs
    - language: node_js
      node_js: "10"

notifications:
  on_success: change
  on_failure: change  # `always` will be the setting once code changes slow down