Example for using Google Chrome via Travis for UI testing

travis.yml

language: python
python:
  - 3.5
services:
  - postgresql
addons:
  postgresql: '9.4'
  chrome: stable
before_install:
  - wget https://chromedriver.storage.googleapis.com/2.33/chromedriver_linux64.zip
  - mkdir chromedriver
  - unzip chromedriver_linux64.zip -d chromedriver
  - export PATH=$PATH:$PWD/chromedriver
install:
  - pip install -r requirements/tests.txt
  - pip install coveralls pyyaml
  - gem install coveralls-lcov
  - nvm install 6.3.1
  - nvm use 6.3.1
  - npm --prefix frontend install
script:
  - flake8
  - pytest --driver Chrome --create-db --cov mad
  - isort --recursive --check-only --diff mad
  - npm --prefix frontend run lint
  - npm --prefix frontend test -- --coverage
after_success:
  - coveralls-lcov -v -n frontend/coverage/lcov.info > coverage_js.json
  - coveralls --merge=coverage_js.json
sudo: false
cache:
  pip: true
  directories:
    - frontend/node_modules